Merge branch 'akpm' (Andrew's incoming)
Quoth Andrew:
- Most of MM. Still waiting for the poweroc guys to get off their
butts and review some threaded hugepages patches.
- alpha
- vfs bits
- drivers/misc
- a few core kerenl tweaks
- printk() features
- MAINTAINERS updates
- backlight merge
- leds merge
- various lib/ updates
- checkpatch updates
* akpm: (127 commits)
epoll: fix spurious lockdep warnings
checkpatch: add a --strict check for utf-8 in commit logs
kernel.h/checkpatch: mark strict_strto<foo> and simple_strto<foo> as obsolete
llist-return-whether-list-is-empty-before-adding-in-llist_add-fix
wireless: at76c50x: follow rename pack_hex_byte to hex_byte_pack
fat: follow rename pack_hex_byte() to hex_byte_pack()
security: follow rename pack_hex_byte() to hex_byte_pack()
kgdb: follow rename pack_hex_byte() to hex_byte_pack()
lib: rename pack_hex_byte() to hex_byte_pack()
lib/string.c: fix strim() semantics for strings that have only blanks
lib/idr.c: fix comment for ida_get_new_above()
lib/percpu_counter.c: enclose hotplug only variables in hotplug ifdef
lib/bitmap.c: quiet sparse noise about address space
lib/spinlock_debug.c: print owner on spinlock lockup
lib/kstrtox: common code between kstrto*() and simple_strto*() functions
drivers/leds/leds-lp5521.c: check if reset is successful
leds: turn the blink_timer off before starting to blink
leds: save the delay values after a successful call to blink_set()
drivers/leds/leds-gpio.c: use gpio_get_value_cansleep() when initializing
drivers/leds/leds-lm3530.c: add __devexit_p where needed
...
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 661efd4..a0c5c5f 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -973,6 +973,9 @@
ignore_loglevel [KNL]
Ignore loglevel setting - this will print /all/
kernel messages to the console. Useful for debugging.
+ We also add it as printk module parameter, so users
+ could change it dynamically, usually by
+ /sys/module/printk/parameters/ignore_loglevel.
ihash_entries= [KNL]
Set number of hash buckets for inode cache.
@@ -1666,6 +1669,11 @@
debugging driver suspend/resume hooks). This may
not work reliably with all consoles, but is known
to work with serial and VGA consoles.
+ To facilitate more flexible debugging, we also add
+ console_suspend, a printk module parameter to control
+ it. Users could use console_suspend (usually
+ /sys/module/printk/parameters/console_suspend) to
+ turn on/off it dynamically.
noaliencache [MM, NUMA, SLAB] Disables the allocation of alien
caches in the slab allocator. Saves per-node memory,
diff --git a/Documentation/sysctl/kernel.txt b/Documentation/sysctl/kernel.txt
index 704e474..1f24636 100644
--- a/Documentation/sysctl/kernel.txt
+++ b/Documentation/sysctl/kernel.txt
@@ -24,6 +24,7 @@
- bootloader_type [ X86 only ]
- bootloader_version [ X86 only ]
- callhome [ S390 only ]
+- cap_last_cap
- core_pattern
- core_pipe_limit
- core_uses_pid
@@ -155,6 +156,13 @@
==============================================================
+cap_last_cap
+
+Highest valid capability of the running kernel. Exports
+CAP_LAST_CAP from the kernel.
+
+==============================================================
+
core_pattern:
core_pattern is used to specify a core dumpfile pattern name.
diff --git a/Documentation/trace/postprocess/trace-vmscan-postprocess.pl b/Documentation/trace/postprocess/trace-vmscan-postprocess.pl
index 12cecc8..4a37c47 100644
--- a/Documentation/trace/postprocess/trace-vmscan-postprocess.pl
+++ b/Documentation/trace/postprocess/trace-vmscan-postprocess.pl
@@ -379,10 +379,10 @@
# To closer match vmstat scanning statistics, only count isolate_both
# and isolate_inactive as scanning. isolate_active is rotation
- # isolate_inactive == 0
- # isolate_active == 1
- # isolate_both == 2
- if ($isolate_mode != 1) {
+ # isolate_inactive == 1
+ # isolate_active == 2
+ # isolate_both == 3
+ if ($isolate_mode != 2) {
$perprocesspid{$process_pid}->{HIGH_NR_SCANNED} += $nr_scanned;
}
$perprocesspid{$process_pid}->{HIGH_NR_CONTIG_DIRTY} += $nr_contig_dirty;
diff --git a/MAINTAINERS b/MAINTAINERS
index d498c70..4befa12 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -316,6 +316,10 @@
S: Supported
F: drivers/input/touchscreen/ad7879.c
+ADDRESS SPACE LAYOUT RANDOMIZATION (ASLR)
+M: Jiri Kosina <jkosina@suse.cz>
+S: Maintained
+
ADM1025 HARDWARE MONITOR DRIVER
M: Jean Delvare <khali@linux-fr.org>
L: lm-sensors@lm-sensors.org
@@ -4020,6 +4024,7 @@
S: Maintained
F: Documentation/misc-devices/lis3lv02d
F: drivers/misc/lis3lv02d/
+F: drivers/platform/x86/hp_accel.c
LLC (802.2)
M: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
@@ -4974,7 +4979,7 @@
F: include/linux/i2c-pca-platform.h
PCI ERROR RECOVERY
-M: Linas Vepstas <linas@austin.ibm.com>
+M: Linas Vepstas <linasvepstas@gmail.com>
L: linux-pci@vger.kernel.org
S: Supported
F: Documentation/PCI/pci-error-recovery.txt
diff --git a/arch/alpha/include/asm/unistd.h b/arch/alpha/include/asm/unistd.h
index 4ac48a0..2207fc6 100644
--- a/arch/alpha/include/asm/unistd.h
+++ b/arch/alpha/include/asm/unistd.h
@@ -457,10 +457,12 @@
#define __NR_clock_adjtime 499
#define __NR_syncfs 500
#define __NR_setns 501
+#define __NR_accept4 502
+#define __NR_sendmmsg 503
#ifdef __KERNEL__
-#define NR_SYSCALLS 502
+#define NR_SYSCALLS 504
#define __ARCH_WANT_IPC_PARSE_VERSION
#define __ARCH_WANT_OLD_READDIR
diff --git a/arch/alpha/kernel/systbls.S b/arch/alpha/kernel/systbls.S
index 6acea1f..e534e1c 100644
--- a/arch/alpha/kernel/systbls.S
+++ b/arch/alpha/kernel/systbls.S
@@ -520,6 +520,8 @@
.quad sys_clock_adjtime
.quad sys_syncfs /* 500 */
.quad sys_setns
+ .quad sys_accept4
+ .quad sys_sendmmsg
.size sys_call_table, . - sys_call_table
.type sys_call_table, @object
diff --git a/arch/arm/mach-imx/mach-mx27_3ds.c b/arch/arm/mach-imx/mach-mx27_3ds.c
index 2eafbac..3772304 100644
--- a/arch/arm/mach-imx/mach-mx27_3ds.c
+++ b/arch/arm/mach-imx/mach-mx27_3ds.c
@@ -241,7 +241,7 @@
};
static struct regulator_consumer_supply vmmc1_consumers[] = {
- REGULATOR_SUPPLY("lcd_2v8", NULL),
+ REGULATOR_SUPPLY("vcore", "spi0.0"),
};
static struct regulator_init_data vmmc1_init = {
@@ -257,7 +257,7 @@
};
static struct regulator_consumer_supply vgen_consumers[] = {
- REGULATOR_SUPPLY("vdd_lcdio", NULL),
+ REGULATOR_SUPPLY("vdd", "spi0.0"),
};
static struct regulator_init_data vgen_init = {
@@ -348,8 +348,6 @@
static struct l4f00242t03_pdata mx27_3ds_lcd_pdata = {
.reset_gpio = LCD_RESET,
.data_enable_gpio = LCD_ENABLE,
- .core_supply = "lcd_2v8",
- .io_supply = "vdd_lcdio",
};
static struct spi_board_info mx27_3ds_spi_devs[] __initdata = {
diff --git a/arch/arm/mach-imx/mach-mx31_3ds.c b/arch/arm/mach-imx/mach-mx31_3ds.c
index 589066f..6484db5 100644
--- a/arch/arm/mach-imx/mach-mx31_3ds.c
+++ b/arch/arm/mach-imx/mach-mx31_3ds.c
@@ -285,8 +285,6 @@
static struct l4f00242t03_pdata mx31_3ds_l4f00242t03_pdata = {
.reset_gpio = IOMUX_TO_GPIO(MX31_PIN_LCS1),
.data_enable_gpio = IOMUX_TO_GPIO(MX31_PIN_SER_RS),
- .core_supply = "lcd_2v8",
- .io_supply = "vdd_lcdio",
};
/*
@@ -411,7 +409,7 @@
};
static struct regulator_consumer_supply vmmc1_consumers[] = {
- REGULATOR_SUPPLY("lcd_2v8", NULL),
+ REGULATOR_SUPPLY("vcore", "spi0.0"),
REGULATOR_SUPPLY("cmos_2v8", "soc-camera-pdrv.0"),
};
@@ -428,7 +426,7 @@
};
static struct regulator_consumer_supply vgen_consumers[] = {
- REGULATOR_SUPPLY("vdd_lcdio", NULL),
+ REGULATOR_SUPPLY("vdd", "spi0.0"),
};
static struct regulator_init_data vgen_init = {
diff --git a/arch/cris/arch-v10/kernel/kgdb.c b/arch/cris/arch-v10/kernel/kgdb.c
index b9f9c8c..b579dd0 100644
--- a/arch/cris/arch-v10/kernel/kgdb.c
+++ b/arch/cris/arch-v10/kernel/kgdb.c
@@ -694,7 +694,7 @@
/* Valid mem address. */
for (i = 0; i < count; i++) {
ch = *mem++;
- buf = pack_hex_byte(buf, ch);
+ buf = hex_byte_pack(buf, ch);
}
}
@@ -868,7 +868,7 @@
/* Send trap type (converted to signal) */
*ptr++ = 'T';
- ptr = pack_hex_byte(ptr, sigval);
+ ptr = hex_byte_pack(ptr, sigval);
/* Send register contents. We probably only need to send the
* PC, frame pointer and stack pointer here. Other registers will be
@@ -881,7 +881,7 @@
status = read_register (regno, ®_cont);
if (status == SUCCESS) {
- ptr = pack_hex_byte(ptr, regno);
+ ptr = hex_byte_pack(ptr, regno);
*ptr++ = ':';
ptr = mem2hex(ptr, (unsigned char *)®_cont,
diff --git a/arch/cris/arch-v32/kernel/kgdb.c b/arch/cris/arch-v32/kernel/kgdb.c
index c0343c3..8c1d35c 100644
--- a/arch/cris/arch-v32/kernel/kgdb.c
+++ b/arch/cris/arch-v32/kernel/kgdb.c
@@ -677,7 +677,7 @@
/* Valid mem address. */
for (i = 0; i < count; i++) {
ch = *mem++;
- buf = pack_hex_byte(buf, ch);
+ buf = hex_byte_pack(buf, ch);
}
}
/* Terminate properly. */
@@ -695,7 +695,7 @@
mem += count - 1;
for (i = 0; i < count; i++) {
ch = *mem--;
- buf = pack_hex_byte(buf, ch);
+ buf = hex_byte_pack(buf, ch);
}
/* Terminate properly. */
@@ -880,7 +880,7 @@
/* Send trap type (converted to signal) */
*ptr++ = 'T';
- ptr = pack_hex_byte(ptr, sigval);
+ ptr = hex_byte_pack(ptr, sigval);
if (((reg.exs & 0xff00) >> 8) == 0xc) {
@@ -988,26 +988,26 @@
}
/* Only send PC, frame and stack pointer. */
read_register(PC, ®_cont);
- ptr = pack_hex_byte(ptr, PC);
+ ptr = hex_byte_pack(ptr, PC);
*ptr++ = ':';
ptr = mem2hex(ptr, (unsigned char *)®_cont, register_size[PC]);
*ptr++ = ';';
read_register(R8, ®_cont);
- ptr = pack_hex_byte(ptr, R8);
+ ptr = hex_byte_pack(ptr, R8);
*ptr++ = ':';
ptr = mem2hex(ptr, (unsigned char *)®_cont, register_size[R8]);
*ptr++ = ';';
read_register(SP, ®_cont);
- ptr = pack_hex_byte(ptr, SP);
+ ptr = hex_byte_pack(ptr, SP);
*ptr++ = ':';
ptr = mem2hex(ptr, (unsigned char *)®_cont, register_size[SP]);
*ptr++ = ';';
/* Send ERP as well; this will save us an entire register fetch in some cases. */
read_register(ERP, ®_cont);
- ptr = pack_hex_byte(ptr, ERP);
+ ptr = hex_byte_pack(ptr, ERP);
*ptr++ = ':';
ptr = mem2hex(ptr, (unsigned char *)®_cont, register_size[ERP]);
*ptr++ = ';';
diff --git a/arch/frv/kernel/gdb-stub.c b/arch/frv/kernel/gdb-stub.c
index a4dba6b..a6d5381 100644
--- a/arch/frv/kernel/gdb-stub.c
+++ b/arch/frv/kernel/gdb-stub.c
@@ -672,7 +672,7 @@
if ((uint32_t)mem&1 && count>=1) {
if (!gdbstub_read_byte(mem,ch))
return NULL;
- buf = pack_hex_byte(buf, ch[0]);
+ buf = hex_byte_pack(buf, ch[0]);
mem++;
count--;
}
@@ -680,8 +680,8 @@
if ((uint32_t)mem&3 && count>=2) {
if (!gdbstub_read_word(mem,(uint16_t *)ch))
return NULL;
- buf = pack_hex_byte(buf, ch[0]);
- buf = pack_hex_byte(buf, ch[1]);
+ buf = hex_byte_pack(buf, ch[0]);
+ buf = hex_byte_pack(buf, ch[1]);
mem += 2;
count -= 2;
}
@@ -689,10 +689,10 @@
while (count>=4) {
if (!gdbstub_read_dword(mem,(uint32_t *)ch))
return NULL;
- buf = pack_hex_byte(buf, ch[0]);
- buf = pack_hex_byte(buf, ch[1]);
- buf = pack_hex_byte(buf, ch[2]);
- buf = pack_hex_byte(buf, ch[3]);
+ buf = hex_byte_pack(buf, ch[0]);
+ buf = hex_byte_pack(buf, ch[1]);
+ buf = hex_byte_pack(buf, ch[2]);
+ buf = hex_byte_pack(buf, ch[3]);
mem += 4;
count -= 4;
}
@@ -700,8 +700,8 @@
if (count>=2) {
if (!gdbstub_read_word(mem,(uint16_t *)ch))
return NULL;
- buf = pack_hex_byte(buf, ch[0]);
- buf = pack_hex_byte(buf, ch[1]);
+ buf = hex_byte_pack(buf, ch[0]);
+ buf = hex_byte_pack(buf, ch[1]);
mem += 2;
count -= 2;
}
@@ -709,7 +709,7 @@
if (count>=1) {
if (!gdbstub_read_byte(mem,ch))
return NULL;
- buf = pack_hex_byte(buf, ch[0]);
+ buf = hex_byte_pack(buf, ch[0]);
}
*buf = 0;
@@ -1498,21 +1498,21 @@
ptr = mem2hex(title, ptr, sizeof(title) - 1,0);
hx = hex_asc_hi(brr >> 24);
- ptr = pack_hex_byte(ptr, hx);
+ ptr = hex_byte_pack(ptr, hx);
hx = hex_asc_lo(brr >> 24);
- ptr = pack_hex_byte(ptr, hx);
+ ptr = hex_byte_pack(ptr, hx);
hx = hex_asc_hi(brr >> 16);
- ptr = pack_hex_byte(ptr, hx);
+ ptr = hex_byte_pack(ptr, hx);
hx = hex_asc_lo(brr >> 16);
- ptr = pack_hex_byte(ptr, hx);
+ ptr = hex_byte_pack(ptr, hx);
hx = hex_asc_hi(brr >> 8);
- ptr = pack_hex_byte(ptr, hx);
+ ptr = hex_byte_pack(ptr, hx);
hx = hex_asc_lo(brr >> 8);
- ptr = pack_hex_byte(ptr, hx);
+ ptr = hex_byte_pack(ptr, hx);
hx = hex_asc_hi(brr);
- ptr = pack_hex_byte(ptr, hx);
+ ptr = hex_byte_pack(ptr, hx);
hx = hex_asc_lo(brr);
- ptr = pack_hex_byte(ptr, hx);
+ ptr = hex_byte_pack(ptr, hx);
ptr = mem2hex(crlf, ptr, sizeof(crlf) - 1, 0);
*ptr = 0;
@@ -1526,10 +1526,10 @@
/* Send trap type (converted to signal) */
*ptr++ = 'T';
- ptr = pack_hex_byte(ptr, sigval);
+ ptr = hex_byte_pack(ptr, sigval);
/* Send Error PC */
- ptr = pack_hex_byte(ptr, GDB_REG_PC);
+ ptr = hex_byte_pack(ptr, GDB_REG_PC);
*ptr++ = ':';
ptr = mem2hex(&__debug_frame->pc, ptr, 4, 0);
*ptr++ = ';';
@@ -1537,7 +1537,7 @@
/*
* Send frame pointer
*/
- ptr = pack_hex_byte(ptr, GDB_REG_FP);
+ ptr = hex_byte_pack(ptr, GDB_REG_FP);
*ptr++ = ':';
ptr = mem2hex(&__debug_frame->fp, ptr, 4, 0);
*ptr++ = ';';
@@ -1545,7 +1545,7 @@
/*
* Send stack pointer
*/
- ptr = pack_hex_byte(ptr, GDB_REG_SP);
+ ptr = hex_byte_pack(ptr, GDB_REG_SP);
*ptr++ = ':';
ptr = mem2hex(&__debug_frame->sp, ptr, 4, 0);
*ptr++ = ';';
diff --git a/arch/mn10300/kernel/gdb-stub.c b/arch/mn10300/kernel/gdb-stub.c
index 538266b..522eb8a 100644
--- a/arch/mn10300/kernel/gdb-stub.c
+++ b/arch/mn10300/kernel/gdb-stub.c
@@ -798,7 +798,7 @@
if ((u32) mem & 1 && count >= 1) {
if (gdbstub_read_byte(mem, ch) != 0)
return 0;
- buf = pack_hex_byte(buf, ch[0]);
+ buf = hex_byte_pack(buf, ch[0]);
mem++;
count--;
}
@@ -806,8 +806,8 @@
if ((u32) mem & 3 && count >= 2) {
if (gdbstub_read_word(mem, ch) != 0)
return 0;
- buf = pack_hex_byte(buf, ch[0]);
- buf = pack_hex_byte(buf, ch[1]);
+ buf = hex_byte_pack(buf, ch[0]);
+ buf = hex_byte_pack(buf, ch[1]);
mem += 2;
count -= 2;
}
@@ -815,10 +815,10 @@
while (count >= 4) {
if (gdbstub_read_dword(mem, ch) != 0)
return 0;
- buf = pack_hex_byte(buf, ch[0]);
- buf = pack_hex_byte(buf, ch[1]);
- buf = pack_hex_byte(buf, ch[2]);
- buf = pack_hex_byte(buf, ch[3]);
+ buf = hex_byte_pack(buf, ch[0]);
+ buf = hex_byte_pack(buf, ch[1]);
+ buf = hex_byte_pack(buf, ch[2]);
+ buf = hex_byte_pack(buf, ch[3]);
mem += 4;
count -= 4;
}
@@ -826,8 +826,8 @@
if (count >= 2) {
if (gdbstub_read_word(mem, ch) != 0)
return 0;
- buf = pack_hex_byte(buf, ch[0]);
- buf = pack_hex_byte(buf, ch[1]);
+ buf = hex_byte_pack(buf, ch[0]);
+ buf = hex_byte_pack(buf, ch[1]);
mem += 2;
count -= 2;
}
@@ -835,7 +835,7 @@
if (count >= 1) {
if (gdbstub_read_byte(mem, ch) != 0)
return 0;
- buf = pack_hex_byte(buf, ch[0]);
+ buf = hex_byte_pack(buf, ch[0]);
}
*buf = 0;
@@ -1273,13 +1273,13 @@
ptr = mem2hex(title, ptr, sizeof(title) - 1, 0);
hx = hex_asc_hi(excep >> 8);
- ptr = pack_hex_byte(ptr, hx);
+ ptr = hex_byte_pack(ptr, hx);
hx = hex_asc_lo(excep >> 8);
- ptr = pack_hex_byte(ptr, hx);
+ ptr = hex_byte_pack(ptr, hx);
hx = hex_asc_hi(excep);
- ptr = pack_hex_byte(ptr, hx);
+ ptr = hex_byte_pack(ptr, hx);
hx = hex_asc_lo(excep);
- ptr = pack_hex_byte(ptr, hx);
+ ptr = hex_byte_pack(ptr, hx);
ptr = mem2hex(crlf, ptr, sizeof(crlf) - 1, 0);
*ptr = 0;
@@ -1291,21 +1291,21 @@
ptr = mem2hex(tbcberr, ptr, sizeof(tbcberr) - 1, 0);
hx = hex_asc_hi(bcberr >> 24);
- ptr = pack_hex_byte(ptr, hx);
+ ptr = hex_byte_pack(ptr, hx);
hx = hex_asc_lo(bcberr >> 24);
- ptr = pack_hex_byte(ptr, hx);
+ ptr = hex_byte_pack(ptr, hx);
hx = hex_asc_hi(bcberr >> 16);
- ptr = pack_hex_byte(ptr, hx);
+ ptr = hex_byte_pack(ptr, hx);
hx = hex_asc_lo(bcberr >> 16);
- ptr = pack_hex_byte(ptr, hx);
+ ptr = hex_byte_pack(ptr, hx);
hx = hex_asc_hi(bcberr >> 8);
- ptr = pack_hex_byte(ptr, hx);
+ ptr = hex_byte_pack(ptr, hx);
hx = hex_asc_lo(bcberr >> 8);
- ptr = pack_hex_byte(ptr, hx);
+ ptr = hex_byte_pack(ptr, hx);
hx = hex_asc_hi(bcberr);
- ptr = pack_hex_byte(ptr, hx);
+ ptr = hex_byte_pack(ptr, hx);
hx = hex_asc_lo(bcberr);
- ptr = pack_hex_byte(ptr, hx);
+ ptr = hex_byte_pack(ptr, hx);
ptr = mem2hex(crlf, ptr, sizeof(crlf) - 1, 0);
*ptr = 0;
@@ -1321,12 +1321,12 @@
* Send trap type (converted to signal)
*/
*ptr++ = 'T';
- ptr = pack_hex_byte(ptr, sigval);
+ ptr = hex_byte_pack(ptr, sigval);
/*
* Send Error PC
*/
- ptr = pack_hex_byte(ptr, GDB_REGID_PC);
+ ptr = hex_byte_pack(ptr, GDB_REGID_PC);
*ptr++ = ':';
ptr = mem2hex(®s->pc, ptr, 4, 0);
*ptr++ = ';';
@@ -1334,7 +1334,7 @@
/*
* Send frame pointer
*/
- ptr = pack_hex_byte(ptr, GDB_REGID_FP);
+ ptr = hex_byte_pack(ptr, GDB_REGID_FP);
*ptr++ = ':';
ptr = mem2hex(®s->a3, ptr, 4, 0);
*ptr++ = ';';
@@ -1343,7 +1343,7 @@
* Send stack pointer
*/
ssp = (unsigned long) (regs + 1);
- ptr = pack_hex_byte(ptr, GDB_REGID_SP);
+ ptr = hex_byte_pack(ptr, GDB_REGID_SP);
*ptr++ = ':';
ptr = mem2hex(&ssp, ptr, 4, 0);
*ptr++ = ';';
diff --git a/arch/powerpc/include/asm/systbl.h b/arch/powerpc/include/asm/systbl.h
index fa0d27a..559ae1e 100644
--- a/arch/powerpc/include/asm/systbl.h
+++ b/arch/powerpc/include/asm/systbl.h
@@ -354,3 +354,5 @@
SYSCALL_SPU(syncfs)
COMPAT_SYS_SPU(sendmmsg)
SYSCALL_SPU(setns)
+COMPAT_SYS(process_vm_readv)
+COMPAT_SYS(process_vm_writev)
diff --git a/arch/powerpc/include/asm/unistd.h b/arch/powerpc/include/asm/unistd.h
index b8b3f59..d3d1b5e 100644
--- a/arch/powerpc/include/asm/unistd.h
+++ b/arch/powerpc/include/asm/unistd.h
@@ -373,10 +373,12 @@
#define __NR_syncfs 348
#define __NR_sendmmsg 349
#define __NR_setns 350
+#define __NR_process_vm_readv 351
+#define __NR_process_vm_writev 352
#ifdef __KERNEL__
-#define __NR_syscalls 351
+#define __NR_syscalls 353
#define __NR__exit __NR_exit
#define NR_syscalls __NR_syscalls
diff --git a/arch/x86/ia32/ia32entry.S b/arch/x86/ia32/ia32entry.S
index 54edb207..a6253ec 100644
--- a/arch/x86/ia32/ia32entry.S
+++ b/arch/x86/ia32/ia32entry.S
@@ -850,4 +850,6 @@
.quad sys_syncfs
.quad compat_sys_sendmmsg /* 345 */
.quad sys_setns
+ .quad compat_sys_process_vm_readv
+ .quad compat_sys_process_vm_writev
ia32_syscall_end:
diff --git a/arch/x86/include/asm/unistd_32.h b/arch/x86/include/asm/unistd_32.h
index 593485b..599c77d 100644
--- a/arch/x86/include/asm/unistd_32.h
+++ b/arch/x86/include/asm/unistd_32.h
@@ -352,10 +352,12 @@
#define __NR_syncfs 344
#define __NR_sendmmsg 345
#define __NR_setns 346
+#define __NR_process_vm_readv 347
+#define __NR_process_vm_writev 348
#ifdef __KERNEL__
-#define NR_syscalls 347
+#define NR_syscalls 349
#define __ARCH_WANT_IPC_PARSE_VERSION
#define __ARCH_WANT_OLD_READDIR
diff --git a/arch/x86/include/asm/unistd_64.h b/arch/x86/include/asm/unistd_64.h
index 0a6ba33..0431f19 100644
--- a/arch/x86/include/asm/unistd_64.h
+++ b/arch/x86/include/asm/unistd_64.h
@@ -682,6 +682,10 @@
__SYSCALL(__NR_setns, sys_setns)
#define __NR_getcpu 309
__SYSCALL(__NR_getcpu, sys_getcpu)
+#define __NR_process_vm_readv 310
+__SYSCALL(__NR_process_vm_readv, sys_process_vm_readv)
+#define __NR_process_vm_writev 311
+__SYSCALL(__NR_process_vm_writev, sys_process_vm_writev)
#ifndef __NO_STUBS
#define __ARCH_WANT_OLD_READDIR
diff --git a/arch/x86/kernel/syscall_table_32.S b/arch/x86/kernel/syscall_table_32.S
index bc19be3..9a0e312 100644
--- a/arch/x86/kernel/syscall_table_32.S
+++ b/arch/x86/kernel/syscall_table_32.S
@@ -346,3 +346,5 @@
.long sys_syncfs
.long sys_sendmmsg /* 345 */
.long sys_setns
+ .long sys_process_vm_readv
+ .long sys_process_vm_writev
diff --git a/drivers/hwmon/hwmon.c b/drivers/hwmon/hwmon.c
index a61e781..6460487 100644
--- a/drivers/hwmon/hwmon.c
+++ b/drivers/hwmon/hwmon.c
@@ -27,8 +27,7 @@
static struct class *hwmon_class;
-static DEFINE_IDR(hwmon_idr);
-static DEFINE_SPINLOCK(idr_lock);
+static DEFINE_IDA(hwmon_ida);
/**
* hwmon_device_register - register w/ hwmon
@@ -42,30 +41,17 @@
struct device *hwmon_device_register(struct device *dev)
{
struct device *hwdev;
- int id, err;
+ int id;
-again:
- if (unlikely(idr_pre_get(&hwmon_idr, GFP_KERNEL) == 0))
- return ERR_PTR(-ENOMEM);
+ id = ida_simple_get(&hwmon_ida, 0, 0, GFP_KERNEL);
+ if (id < 0)
+ return ERR_PTR(id);
- spin_lock(&idr_lock);
- err = idr_get_new(&hwmon_idr, NULL, &id);
- spin_unlock(&idr_lock);
-
- if (unlikely(err == -EAGAIN))
- goto again;
- else if (unlikely(err))
- return ERR_PTR(err);
-
- id = id & MAX_ID_MASK;
hwdev = device_create(hwmon_class, dev, MKDEV(0, 0), NULL,
HWMON_ID_FORMAT, id);
- if (IS_ERR(hwdev)) {
- spin_lock(&idr_lock);
- idr_remove(&hwmon_idr, id);
- spin_unlock(&idr_lock);
- }
+ if (IS_ERR(hwdev))
+ ida_simple_remove(&hwmon_ida, id);
return hwdev;
}
@@ -81,9 +67,7 @@
if (likely(sscanf(dev_name(dev), HWMON_ID_FORMAT, &id) == 1)) {
device_unregister(dev);
- spin_lock(&idr_lock);
- idr_remove(&hwmon_idr, id);
- spin_unlock(&idr_lock);
+ ida_simple_remove(&hwmon_ida, id);
} else
dev_dbg(dev->parent,
"hwmon_device_unregister() failed: bad class ID!\n");
diff --git a/drivers/hwmon/ibmaem.c b/drivers/hwmon/ibmaem.c
index c316294..783d0c1 100644
--- a/drivers/hwmon/ibmaem.c
+++ b/drivers/hwmon/ibmaem.c
@@ -88,8 +88,7 @@
#define AEM_MIN_POWER_INTERVAL 200
#define UJ_PER_MJ 1000L
-static DEFINE_IDR(aem_idr);
-static DEFINE_SPINLOCK(aem_idr_lock);
+static DEFINE_IDA(aem_ida);
static struct platform_driver aem_driver = {
.driver = {
@@ -356,38 +355,6 @@
complete(&data->read_complete);
}
-/* ID functions */
-
-/* Obtain an id */
-static int aem_idr_get(int *id)
-{
- int i, err;
-
-again:
- if (unlikely(!idr_pre_get(&aem_idr, GFP_KERNEL)))
- return -ENOMEM;
-
- spin_lock(&aem_idr_lock);
- err = idr_get_new(&aem_idr, NULL, &i);
- spin_unlock(&aem_idr_lock);
-
- if (unlikely(err == -EAGAIN))
- goto again;
- else if (unlikely(err))
- return err;
-
- *id = i & MAX_ID_MASK;
- return 0;
-}
-
-/* Release an object ID */
-static void aem_idr_put(int id)
-{
- spin_lock(&aem_idr_lock);
- idr_remove(&aem_idr, id);
- spin_unlock(&aem_idr_lock);
-}
-
/* Sensor support functions */
/* Read a sensor value */
@@ -530,7 +497,7 @@
ipmi_destroy_user(data->ipmi.user);
platform_set_drvdata(data->pdev, NULL);
platform_device_unregister(data->pdev);
- aem_idr_put(data->id);
+ ida_simple_remove(&aem_ida, data->id);
kfree(data);
}
@@ -587,7 +554,8 @@
data->power_period[i] = AEM_DEFAULT_POWER_INTERVAL;
/* Create sub-device for this fw instance */
- if (aem_idr_get(&data->id))
+ data->id = ida_simple_get(&aem_ida, 0, 0, GFP_KERNEL);
+ if (data->id < 0)
goto id_err;
data->pdev = platform_device_alloc(DRVNAME, data->id);
@@ -638,7 +606,7 @@
platform_set_drvdata(data->pdev, NULL);
platform_device_unregister(data->pdev);
dev_err:
- aem_idr_put(data->id);
+ ida_simple_remove(&aem_ida, data->id);
id_err:
kfree(data);
@@ -720,7 +688,8 @@
data->power_period[i] = AEM_DEFAULT_POWER_INTERVAL;
/* Create sub-device for this fw instance */
- if (aem_idr_get(&data->id))
+ data->id = ida_simple_get(&aem_ida, 0, 0, GFP_KERNEL);
+ if (data->id < 0)
goto id_err;
data->pdev = platform_device_alloc(DRVNAME, data->id);
@@ -771,7 +740,7 @@
platform_set_drvdata(data->pdev, NULL);
platform_device_unregister(data->pdev);
dev_err:
- aem_idr_put(data->id);
+ ida_simple_remove(&aem_ida, data->id);
id_err:
kfree(data);
diff --git a/drivers/infiniband/core/umem.c b/drivers/infiniband/core/umem.c
index b645e55..9155f91 100644
--- a/drivers/infiniband/core/umem.c
+++ b/drivers/infiniband/core/umem.c
@@ -136,7 +136,7 @@
down_write(¤t->mm->mmap_sem);
- locked = npages + current->mm->locked_vm;
+ locked = npages + current->mm->pinned_vm;
lock_limit = rlimit(RLIMIT_MEMLOCK) >> PAGE_SHIFT;
if ((locked > lock_limit) && !capable(CAP_IPC_LOCK)) {
@@ -206,7 +206,7 @@
__ib_umem_release(context->device, umem, 0);
kfree(umem);
} else
- current->mm->locked_vm = locked;
+ current->mm->pinned_vm = locked;
up_write(¤t->mm->mmap_sem);
if (vma_list)
@@ -222,7 +222,7 @@
struct ib_umem *umem = container_of(work, struct ib_umem, work);
down_write(&umem->mm->mmap_sem);
- umem->mm->locked_vm -= umem->diff;
+ umem->mm->pinned_vm -= umem->diff;
up_write(&umem->mm->mmap_sem);
mmput(umem->mm);
kfree(umem);
diff --git a/drivers/infiniband/hw/ipath/ipath_user_pages.c b/drivers/infiniband/hw/ipath/ipath_user_pages.c
index cfed539..dc66c45 100644
--- a/drivers/infiniband/hw/ipath/ipath_user_pages.c
+++ b/drivers/infiniband/hw/ipath/ipath_user_pages.c
@@ -79,7 +79,7 @@
goto bail_release;
}
- current->mm->locked_vm += num_pages;
+ current->mm->pinned_vm += num_pages;
ret = 0;
goto bail;
@@ -178,7 +178,7 @@
__ipath_release_user_pages(p, num_pages, 1);
- current->mm->locked_vm -= num_pages;
+ current->mm->pinned_vm -= num_pages;
up_write(¤t->mm->mmap_sem);
}
@@ -195,7 +195,7 @@
container_of(_work, struct ipath_user_pages_work, work);
down_write(&work->mm->mmap_sem);
- work->mm->locked_vm -= work->num_pages;
+ work->mm->pinned_vm -= work->num_pages;
up_write(&work->mm->mmap_sem);
mmput(work->mm);
kfree(work);
diff --git a/drivers/infiniband/hw/qib/qib_user_pages.c b/drivers/infiniband/hw/qib/qib_user_pages.c
index 7689e49..2bc1d2b 100644
--- a/drivers/infiniband/hw/qib/qib_user_pages.c
+++ b/drivers/infiniband/hw/qib/qib_user_pages.c
@@ -74,7 +74,7 @@
goto bail_release;
}
- current->mm->locked_vm += num_pages;
+ current->mm->pinned_vm += num_pages;
ret = 0;
goto bail;
@@ -151,7 +151,7 @@
__qib_release_user_pages(p, num_pages, 1);
if (current->mm) {
- current->mm->locked_vm -= num_pages;
+ current->mm->pinned_vm -= num_pages;
up_write(¤t->mm->mmap_sem);
}
}
diff --git a/drivers/isdn/hisax/callc.c b/drivers/isdn/hisax/callc.c
index 37e685e..c4897e1 100644
--- a/drivers/isdn/hisax/callc.c
+++ b/drivers/isdn/hisax/callc.c
@@ -65,7 +65,7 @@
return (struct IsdnCardState *) 0;
}
-static __attribute__((format(printf, 3, 4))) void
+static __printf(3, 4) void
link_debug(struct Channel *chanp, int direction, char *fmt, ...)
{
va_list args;
@@ -1068,7 +1068,7 @@
return 0;
}
-static __attribute__((format(printf, 2, 3))) void
+static __printf(2, 3) void
callc_debug(struct FsmInst *fi, char *fmt, ...)
{
va_list args;
diff --git a/drivers/isdn/hisax/hisax.h b/drivers/isdn/hisax/hisax.h
index 0a5c42a..aff45a1 100644
--- a/drivers/isdn/hisax/hisax.h
+++ b/drivers/isdn/hisax/hisax.h
@@ -1287,9 +1287,9 @@
int HiSax_command(isdn_ctrl * ic);
int HiSax_writebuf_skb(int id, int chan, int ack, struct sk_buff *skb);
-__attribute__((format(printf, 3, 4)))
+__printf(3, 4)
void HiSax_putstatus(struct IsdnCardState *cs, char *head, char *fmt, ...);
-__attribute__((format(printf, 3, 0)))
+__printf(3, 0)
void VHiSax_putstatus(struct IsdnCardState *cs, char *head, char *fmt, va_list args);
void HiSax_reportcard(int cardnr, int sel);
int QuickHex(char *txt, u_char * p, int cnt);
diff --git a/drivers/isdn/hisax/isdnl1.h b/drivers/isdn/hisax/isdnl1.h
index 425d861..66ddcab 100644
--- a/drivers/isdn/hisax/isdnl1.h
+++ b/drivers/isdn/hisax/isdnl1.h
@@ -21,7 +21,7 @@
#define B_XMTBUFREADY 1
#define B_ACKPENDING 2
-__attribute__((format(printf, 2, 3)))
+__printf(2, 3)
void debugl1(struct IsdnCardState *cs, char *fmt, ...);
void DChannel_proc_xmt(struct IsdnCardState *cs);
void DChannel_proc_rcv(struct IsdnCardState *cs);
diff --git a/drivers/isdn/hisax/isdnl3.c b/drivers/isdn/hisax/isdnl3.c
index ad291f2..1c24e44 100644
--- a/drivers/isdn/hisax/isdnl3.c
+++ b/drivers/isdn/hisax/isdnl3.c
@@ -66,7 +66,7 @@
"EV_TIMEOUT",
};
-static __attribute__((format(printf, 2, 3))) void
+static __printf(2, 3) void
l3m_debug(struct FsmInst *fi, char *fmt, ...)
{
va_list args;
diff --git a/drivers/isdn/hisax/st5481_d.c b/drivers/isdn/hisax/st5481_d.c
index 4408263..db247b7 100644
--- a/drivers/isdn/hisax/st5481_d.c
+++ b/drivers/isdn/hisax/st5481_d.c
@@ -167,7 +167,7 @@
{ST_L1_F8, EV_IND_RSY, l1_ignore},
};
-static __attribute__((format(printf, 2, 3)))
+static __printf(2, 3)
void l1m_debug(struct FsmInst *fi, char *fmt, ...)
{
va_list args;
@@ -270,7 +270,7 @@
"EV_DOUT_UNDERRUN",
};
-static __attribute__((format(printf, 2, 3)))
+static __printf(2, 3)
void dout_debug(struct FsmInst *fi, char *fmt, ...)
{
va_list args;
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index dc7caad..ff203a4 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -375,6 +375,18 @@
cannot be used. This driver supports hardware blinking with an on+off
period from 62ms to 125s. Say Y to enable LEDs on the HP iPAQ hx4700.
+config LEDS_RENESAS_TPU
+ bool "LED support for Renesas TPU"
+ depends on LEDS_CLASS && HAVE_CLK && GENERIC_GPIO
+ help
+ This option enables build of the LED TPU platform driver,
+ suitable to drive any TPU channel on newer Renesas SoCs.
+ The driver controls the GPIO pin connected to the LED via
+ the GPIO framework and expects the LED to be connected to
+ a pin that can be driven in both GPIO mode and using TPU
+ pin function. The latter to support brightness control.
+ Brightness control is supported but hardware blinking is not.
+
config LEDS_TRIGGERS
bool "LED Trigger support"
depends on LEDS_CLASS
diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile
index a0a1b89..e4f6bf5 100644
--- a/drivers/leds/Makefile
+++ b/drivers/leds/Makefile
@@ -42,6 +42,7 @@
obj-$(CONFIG_LEDS_NS2) += leds-ns2.o
obj-$(CONFIG_LEDS_NETXBIG) += leds-netxbig.o
obj-$(CONFIG_LEDS_ASIC3) += leds-asic3.o
+obj-$(CONFIG_LEDS_RENESAS_TPU) += leds-renesas-tpu.o
# LED SPI Drivers
obj-$(CONFIG_LEDS_DAC124S085) += leds-dac124s085.o
diff --git a/drivers/leds/led-class.c b/drivers/leds/led-class.c
index dc3d3d8..661b692 100644
--- a/drivers/leds/led-class.c
+++ b/drivers/leds/led-class.c
@@ -267,9 +267,14 @@
unsigned long *delay_on,
unsigned long *delay_off)
{
+ del_timer_sync(&led_cdev->blink_timer);
+
if (led_cdev->blink_set &&
- !led_cdev->blink_set(led_cdev, delay_on, delay_off))
+ !led_cdev->blink_set(led_cdev, delay_on, delay_off)) {
+ led_cdev->blink_delay_on = *delay_on;
+ led_cdev->blink_delay_off = *delay_off;
return;
+ }
/* blink with 1 Hz as default if nothing specified */
if (!*delay_on && !*delay_off)
diff --git a/drivers/leds/led-triggers.c b/drivers/leds/led-triggers.c
index 4bebae7..6f1ff93 100644
--- a/drivers/leds/led-triggers.c
+++ b/drivers/leds/led-triggers.c
@@ -261,9 +261,12 @@
if (trigger) {
trigger->name = name;
err = led_trigger_register(trigger);
- if (err < 0)
+ if (err < 0) {
+ kfree(trigger);
+ trigger = NULL;
printk(KERN_WARNING "LED trigger %s failed to register"
" (%d)\n", name, err);
+ }
} else
printk(KERN_WARNING "LED trigger %s failed to register"
" (no memory)\n", name);
diff --git a/drivers/leds/leds-gpio.c b/drivers/leds/leds-gpio.c
index 3d8bc32..504cc26 100644
--- a/drivers/leds/leds-gpio.c
+++ b/drivers/leds/leds-gpio.c
@@ -121,7 +121,7 @@
}
led_dat->cdev.brightness_set = gpio_led_set;
if (template->default_state == LEDS_GPIO_DEFSTATE_KEEP)
- state = !!gpio_get_value(led_dat->gpio) ^ led_dat->active_low;
+ state = !!gpio_get_value_cansleep(led_dat->gpio) ^ led_dat->active_low;
else
state = (template->default_state == LEDS_GPIO_DEFSTATE_ON);
led_dat->cdev.brightness = state ? LED_FULL : LED_OFF;
diff --git a/drivers/leds/leds-lm3530.c b/drivers/leds/leds-lm3530.c
index 3dd7090..4dc510f 100644
--- a/drivers/leds/leds-lm3530.c
+++ b/drivers/leds/leds-lm3530.c
@@ -421,7 +421,6 @@
err_reg_init:
regulator_put(drvdata->regulator);
err_regulator_get:
- i2c_set_clientdata(client, NULL);
kfree(drvdata);
err_out:
return err;
@@ -449,7 +448,7 @@
static struct i2c_driver lm3530_i2c_driver = {
.probe = lm3530_probe,
- .remove = lm3530_remove,
+ .remove = __devexit_p(lm3530_remove),
.id_table = lm3530_id,
.driver = {
.name = LM3530_NAME,
diff --git a/drivers/leds/leds-lp5521.c b/drivers/leds/leds-lp5521.c
index 9fc122c..cb641f1 100644
--- a/drivers/leds/leds-lp5521.c
+++ b/drivers/leds/leds-lp5521.c
@@ -97,6 +97,9 @@
/* Status */
#define LP5521_EXT_CLK_USED 0x08
+/* default R channel current register value */
+#define LP5521_REG_R_CURR_DEFAULT 0xAF
+
struct lp5521_engine {
int id;
u8 mode;
@@ -175,14 +178,14 @@
mode = LP5521_CMD_DIRECT;
ret = lp5521_read(client, LP5521_REG_OP_MODE, &engine_state);
+ if (ret < 0)
+ return ret;
/* set mode only for this engine */
engine_state &= ~(engine->engine_mask);
mode &= engine->engine_mask;
engine_state |= mode;
- ret |= lp5521_write(client, LP5521_REG_OP_MODE, engine_state);
-
- return ret;
+ return lp5521_write(client, LP5521_REG_OP_MODE, engine_state);
}
static int lp5521_load_program(struct lp5521_engine *eng, const u8 *pattern)
@@ -643,6 +646,7 @@
struct lp5521_chip *chip;
struct lp5521_platform_data *pdata;
int ret, i, led;
+ u8 buf;
chip = kzalloc(sizeof(*chip), GFP_KERNEL);
if (!chip)
@@ -681,6 +685,20 @@
* Exact value is not available. 10 - 20ms
* appears to be enough for reset.
*/
+
+ /*
+ * Make sure that the chip is reset by reading back the r channel
+ * current reg. This is dummy read is required on some platforms -
+ * otherwise further access to the R G B channels in the
+ * LP5521_REG_ENABLE register will not have any effect - strange!
+ */
+ lp5521_read(client, LP5521_REG_R_CURRENT, &buf);
+ if (buf != LP5521_REG_R_CURR_DEFAULT) {
+ dev_err(&client->dev, "error in reseting chip\n");
+ goto fail2;
+ }
+ usleep_range(10000, 20000);
+
ret = lp5521_detect(client);
if (ret) {
diff --git a/drivers/leds/leds-renesas-tpu.c b/drivers/leds/leds-renesas-tpu.c
new file mode 100644
index 0000000..3ee540e
--- /dev/null
+++ b/drivers/leds/leds-renesas-tpu.c
@@ -0,0 +1,357 @@
+/*
+ * LED control using Renesas TPU
+ *
+ * Copyright (C) 2011 Magnus Damm
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/spinlock.h>
+#include <linux/printk.h>
+#include <linux/ioport.h>
+#include <linux/io.h>
+#include <linux/clk.h>
+#include <linux/leds.h>
+#include <linux/platform_data/leds-renesas-tpu.h>
+#include <linux/gpio.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/pm_runtime.h>
+#include <linux/workqueue.h>
+
+enum r_tpu_pin { R_TPU_PIN_UNUSED, R_TPU_PIN_GPIO, R_TPU_PIN_GPIO_FN };
+enum r_tpu_timer { R_TPU_TIMER_UNUSED, R_TPU_TIMER_ON };
+
+struct r_tpu_priv {
+ struct led_classdev ldev;
+ void __iomem *mapbase;
+ struct clk *clk;
+ struct platform_device *pdev;
+ enum r_tpu_pin pin_state;
+ enum r_tpu_timer timer_state;
+ unsigned long min_rate;
+ unsigned int refresh_rate;
+ struct work_struct work;
+ enum led_brightness new_brightness;
+};
+
+static DEFINE_SPINLOCK(r_tpu_lock);
+
+#define TSTR -1 /* Timer start register (shared register) */
+#define TCR 0 /* Timer control register (+0x00) */
+#define TMDR 1 /* Timer mode register (+0x04) */
+#define TIOR 2 /* Timer I/O control register (+0x08) */
+#define TIER 3 /* Timer interrupt enable register (+0x0c) */
+#define TSR 4 /* Timer status register (+0x10) */
+#define TCNT 5 /* Timer counter (+0x14) */
+#define TGRA 6 /* Timer general register A (+0x18) */
+#define TGRB 7 /* Timer general register B (+0x1c) */
+#define TGRC 8 /* Timer general register C (+0x20) */
+#define TGRD 9 /* Timer general register D (+0x24) */
+
+static inline unsigned short r_tpu_read(struct r_tpu_priv *p, int reg_nr)
+{
+ struct led_renesas_tpu_config *cfg = p->pdev->dev.platform_data;
+ void __iomem *base = p->mapbase;
+ unsigned long offs = reg_nr << 2;
+
+ if (reg_nr == TSTR)
+ return ioread16(base - cfg->channel_offset);
+
+ return ioread16(base + offs);
+}
+
+static inline void r_tpu_write(struct r_tpu_priv *p, int reg_nr,
+ unsigned short value)
+{
+ struct led_renesas_tpu_config *cfg = p->pdev->dev.platform_data;
+ void __iomem *base = p->mapbase;
+ unsigned long offs = reg_nr << 2;
+
+ if (reg_nr == TSTR) {
+ iowrite16(value, base - cfg->channel_offset);
+ return;
+ }
+
+ iowrite16(value, base + offs);
+}
+
+static void r_tpu_start_stop_ch(struct r_tpu_priv *p, int start)
+{
+ struct led_renesas_tpu_config *cfg = p->pdev->dev.platform_data;
+ unsigned long flags, value;
+
+ /* start stop register shared by multiple timer channels */
+ spin_lock_irqsave(&r_tpu_lock, flags);
+ value = r_tpu_read(p, TSTR);
+
+ if (start)
+ value |= 1 << cfg->timer_bit;
+ else
+ value &= ~(1 << cfg->timer_bit);
+
+ r_tpu_write(p, TSTR, value);
+ spin_unlock_irqrestore(&r_tpu_lock, flags);
+}
+
+static int r_tpu_enable(struct r_tpu_priv *p, enum led_brightness brightness)
+{
+ struct led_renesas_tpu_config *cfg = p->pdev->dev.platform_data;
+ int prescaler[] = { 1, 4, 16, 64 };
+ int k, ret;
+ unsigned long rate, tmp;
+
+ if (p->timer_state == R_TPU_TIMER_ON)
+ return 0;
+
+ /* wake up device and enable clock */
+ pm_runtime_get_sync(&p->pdev->dev);
+ ret = clk_enable(p->clk);
+ if (ret) {
+ dev_err(&p->pdev->dev, "cannot enable clock\n");
+ return ret;
+ }
+
+ /* make sure channel is disabled */
+ r_tpu_start_stop_ch(p, 0);
+
+ /* get clock rate after enabling it */
+ rate = clk_get_rate(p->clk);
+
+ /* pick the lowest acceptable rate */
+ for (k = 0; k < ARRAY_SIZE(prescaler); k++)
+ if ((rate / prescaler[k]) < p->min_rate)
+ break;
+
+ if (!k) {
+ dev_err(&p->pdev->dev, "clock rate mismatch\n");
+ goto err0;
+ }
+ dev_dbg(&p->pdev->dev, "rate = %lu, prescaler %u\n",
+ rate, prescaler[k - 1]);
+
+ /* clear TCNT on TGRB match, count on rising edge, set prescaler */
+ r_tpu_write(p, TCR, 0x0040 | (k - 1));
+
+ /* output 0 until TGRA, output 1 until TGRB */
+ r_tpu_write(p, TIOR, 0x0002);
+
+ rate /= prescaler[k - 1] * p->refresh_rate;
+ r_tpu_write(p, TGRB, rate);
+ dev_dbg(&p->pdev->dev, "TRGB = 0x%04lx\n", rate);
+
+ tmp = (cfg->max_brightness - brightness) * rate;
+ r_tpu_write(p, TGRA, tmp / cfg->max_brightness);
+ dev_dbg(&p->pdev->dev, "TRGA = 0x%04lx\n", tmp / cfg->max_brightness);
+
+ /* PWM mode */
+ r_tpu_write(p, TMDR, 0x0002);
+
+ /* enable channel */
+ r_tpu_start_stop_ch(p, 1);
+
+ p->timer_state = R_TPU_TIMER_ON;
+ return 0;
+ err0:
+ clk_disable(p->clk);
+ pm_runtime_put_sync(&p->pdev->dev);
+ return -ENOTSUPP;
+}
+
+static void r_tpu_disable(struct r_tpu_priv *p)
+{
+ if (p->timer_state == R_TPU_TIMER_UNUSED)
+ return;
+
+ /* disable channel */
+ r_tpu_start_stop_ch(p, 0);
+
+ /* stop clock and mark device as idle */
+ clk_disable(p->clk);
+ pm_runtime_put_sync(&p->pdev->dev);
+
+ p->timer_state = R_TPU_TIMER_UNUSED;
+}
+
+static void r_tpu_set_pin(struct r_tpu_priv *p, enum r_tpu_pin new_state,
+ enum led_brightness brightness)
+{
+ struct led_renesas_tpu_config *cfg = p->pdev->dev.platform_data;
+
+ if (p->pin_state == new_state) {
+ if (p->pin_state == R_TPU_PIN_GPIO)
+ gpio_set_value(cfg->pin_gpio, brightness);
+ return;
+ }
+
+ if (p->pin_state == R_TPU_PIN_GPIO)
+ gpio_free(cfg->pin_gpio);
+
+ if (p->pin_state == R_TPU_PIN_GPIO_FN)
+ gpio_free(cfg->pin_gpio_fn);
+
+ if (new_state == R_TPU_PIN_GPIO) {
+ gpio_request(cfg->pin_gpio, cfg->name);
+ gpio_direction_output(cfg->pin_gpio, !!brightness);
+ }
+ if (new_state == R_TPU_PIN_GPIO_FN)
+ gpio_request(cfg->pin_gpio_fn, cfg->name);
+
+ p->pin_state = new_state;
+}
+
+static void r_tpu_work(struct work_struct *work)
+{
+ struct r_tpu_priv *p = container_of(work, struct r_tpu_priv, work);
+ enum led_brightness brightness = p->new_brightness;
+
+ r_tpu_disable(p);
+
+ /* off and maximum are handled as GPIO pins, in between PWM */
+ if ((brightness == 0) || (brightness == p->ldev.max_brightness))
+ r_tpu_set_pin(p, R_TPU_PIN_GPIO, brightness);
+ else {
+ r_tpu_set_pin(p, R_TPU_PIN_GPIO_FN, 0);
+ r_tpu_enable(p, brightness);
+ }
+}
+
+static void r_tpu_set_brightness(struct led_classdev *ldev,
+ enum led_brightness brightness)
+{
+ struct r_tpu_priv *p = container_of(ldev, struct r_tpu_priv, ldev);
+ p->new_brightness = brightness;
+ schedule_work(&p->work);
+}
+
+static int __devinit r_tpu_probe(struct platform_device *pdev)
+{
+ struct led_renesas_tpu_config *cfg = pdev->dev.platform_data;
+ struct r_tpu_priv *p;
+ struct resource *res;
+ int ret = -ENXIO;
+
+ if (!cfg) {
+ dev_err(&pdev->dev, "missing platform data\n");
+ goto err0;
+ }
+
+ p = kzalloc(sizeof(*p), GFP_KERNEL);
+ if (p == NULL) {
+ dev_err(&pdev->dev, "failed to allocate driver data\n");
+ ret = -ENOMEM;
+ goto err0;
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(&pdev->dev, "failed to get I/O memory\n");
+ goto err1;
+ }
+
+ /* map memory, let mapbase point to our channel */
+ p->mapbase = ioremap_nocache(res->start, resource_size(res));
+ if (p->mapbase == NULL) {
+ dev_err(&pdev->dev, "failed to remap I/O memory\n");
+ goto err1;
+ }
+
+ /* get hold of clock */
+ p->clk = clk_get(&pdev->dev, NULL);
+ if (IS_ERR(p->clk)) {
+ dev_err(&pdev->dev, "cannot get clock\n");
+ ret = PTR_ERR(p->clk);
+ goto err2;
+ }
+
+ p->pdev = pdev;
+ p->pin_state = R_TPU_PIN_UNUSED;
+ p->timer_state = R_TPU_TIMER_UNUSED;
+ p->refresh_rate = cfg->refresh_rate ? cfg->refresh_rate : 100;
+ r_tpu_set_pin(p, R_TPU_PIN_GPIO, LED_OFF);
+ platform_set_drvdata(pdev, p);
+
+ INIT_WORK(&p->work, r_tpu_work);
+
+ p->ldev.name = cfg->name;
+ p->ldev.brightness = LED_OFF;
+ p->ldev.max_brightness = cfg->max_brightness;
+ p->ldev.brightness_set = r_tpu_set_brightness;
+ p->ldev.flags |= LED_CORE_SUSPENDRESUME;
+ ret = led_classdev_register(&pdev->dev, &p->ldev);
+ if (ret < 0)
+ goto err3;
+
+ /* max_brightness may be updated by the LED core code */
+ p->min_rate = p->ldev.max_brightness * p->refresh_rate;
+
+ pm_runtime_enable(&pdev->dev);
+ return 0;
+
+ err3:
+ r_tpu_set_pin(p, R_TPU_PIN_UNUSED, LED_OFF);
+ clk_put(p->clk);
+ err2:
+ iounmap(p->mapbase);
+ err1:
+ kfree(p);
+ err0:
+ return ret;
+}
+
+static int __devexit r_tpu_remove(struct platform_device *pdev)
+{
+ struct r_tpu_priv *p = platform_get_drvdata(pdev);
+
+ r_tpu_set_brightness(&p->ldev, LED_OFF);
+ led_classdev_unregister(&p->ldev);
+ cancel_work_sync(&p->work);
+ r_tpu_disable(p);
+ r_tpu_set_pin(p, R_TPU_PIN_UNUSED, LED_OFF);
+
+ pm_runtime_disable(&pdev->dev);
+ clk_put(p->clk);
+
+ iounmap(p->mapbase);
+ kfree(p);
+ return 0;
+}
+
+static struct platform_driver r_tpu_device_driver = {
+ .probe = r_tpu_probe,
+ .remove = __devexit_p(r_tpu_remove),
+ .driver = {
+ .name = "leds-renesas-tpu",
+ }
+};
+
+static int __init r_tpu_init(void)
+{
+ return platform_driver_register(&r_tpu_device_driver);
+}
+
+static void __exit r_tpu_exit(void)
+{
+ platform_driver_unregister(&r_tpu_device_driver);
+}
+
+module_init(r_tpu_init);
+module_exit(r_tpu_exit);
+
+MODULE_AUTHOR("Magnus Damm");
+MODULE_DESCRIPTION("Renesas TPU LED Driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/misc/ad525x_dpot-i2c.c b/drivers/misc/ad525x_dpot-i2c.c
index 4ff73c2..a39e055 100644
--- a/drivers/misc/ad525x_dpot-i2c.c
+++ b/drivers/misc/ad525x_dpot-i2c.c
@@ -98,6 +98,7 @@
{"ad5282", AD5282_ID},
{"adn2860", ADN2860_ID},
{"ad5273", AD5273_ID},
+ {"ad5161", AD5161_ID},
{"ad5171", AD5171_ID},
{"ad5170", AD5170_ID},
{"ad5172", AD5172_ID},
diff --git a/drivers/misc/fsa9480.c b/drivers/misc/fsa9480.c
index 27dc0d2..f6586d5 100644
--- a/drivers/misc/fsa9480.c
+++ b/drivers/misc/fsa9480.c
@@ -400,7 +400,8 @@
return ret;
}
- device_init_wakeup(&client->dev, pdata->wakeup);
+ if (pdata)
+ device_init_wakeup(&client->dev, pdata->wakeup);
}
return 0;
diff --git a/drivers/misc/lis3lv02d/lis3lv02d.c b/drivers/misc/lis3lv02d/lis3lv02d.c
index 8b51cd6..29d12a7 100644
--- a/drivers/misc/lis3lv02d/lis3lv02d.c
+++ b/drivers/misc/lis3lv02d/lis3lv02d.c
@@ -163,7 +163,7 @@
int i;
if (lis3->blkread) {
- if (lis3_dev.whoami == WAI_12B) {
+ if (lis3->whoami == WAI_12B) {
u16 data[3];
lis3->blkread(lis3, OUTX_L, 6, (u8 *)data);
for (i = 0; i < 3; i++)
@@ -195,18 +195,30 @@
static int lis3_3dc_rates[16] = {0, 1, 10, 25, 50, 100, 200, 400, 1600, 5000};
/* ODR is Output Data Rate */
-static int lis3lv02d_get_odr(void)
+static int lis3lv02d_get_odr(struct lis3lv02d *lis3)
{
u8 ctrl;
int shift;
- lis3_dev.read(&lis3_dev, CTRL_REG1, &ctrl);
- ctrl &= lis3_dev.odr_mask;
- shift = ffs(lis3_dev.odr_mask) - 1;
- return lis3_dev.odrs[(ctrl >> shift)];
+ lis3->read(lis3, CTRL_REG1, &ctrl);
+ ctrl &= lis3->odr_mask;
+ shift = ffs(lis3->odr_mask) - 1;
+ return lis3->odrs[(ctrl >> shift)];
}
-static int lis3lv02d_set_odr(int rate)
+static int lis3lv02d_get_pwron_wait(struct lis3lv02d *lis3)
+{
+ int div = lis3lv02d_get_odr(lis3);
+
+ if (WARN_ONCE(div == 0, "device returned spurious data"))
+ return -ENXIO;
+
+ /* LIS3 power on delay is quite long */
+ msleep(lis3->pwron_delay / div);
+ return 0;
+}
+
+static int lis3lv02d_set_odr(struct lis3lv02d *lis3, int rate)
{
u8 ctrl;
int i, len, shift;
@@ -214,14 +226,14 @@
if (!rate)
return -EINVAL;
- lis3_dev.read(&lis3_dev, CTRL_REG1, &ctrl);
- ctrl &= ~lis3_dev.odr_mask;
- len = 1 << hweight_long(lis3_dev.odr_mask); /* # of possible values */
- shift = ffs(lis3_dev.odr_mask) - 1;
+ lis3->read(lis3, CTRL_REG1, &ctrl);
+ ctrl &= ~lis3->odr_mask;
+ len = 1 << hweight_long(lis3->odr_mask); /* # of possible values */
+ shift = ffs(lis3->odr_mask) - 1;
for (i = 0; i < len; i++)
- if (lis3_dev.odrs[i] == rate) {
- lis3_dev.write(&lis3_dev, CTRL_REG1,
+ if (lis3->odrs[i] == rate) {
+ lis3->write(lis3, CTRL_REG1,
ctrl | (i << shift));
return 0;
}
@@ -240,12 +252,12 @@
mutex_lock(&lis3->mutex);
irq_cfg = lis3->irq_cfg;
- if (lis3_dev.whoami == WAI_8B) {
+ if (lis3->whoami == WAI_8B) {
lis3->data_ready_count[IRQ_LINE0] = 0;
lis3->data_ready_count[IRQ_LINE1] = 0;
/* Change interrupt cfg to data ready for selftest */
- atomic_inc(&lis3_dev.wake_thread);
+ atomic_inc(&lis3->wake_thread);
lis3->irq_cfg = LIS3_IRQ1_DATA_READY | LIS3_IRQ2_DATA_READY;
lis3->read(lis3, CTRL_REG3, &ctrl_reg_data);
lis3->write(lis3, CTRL_REG3, (ctrl_reg_data &
@@ -253,12 +265,12 @@
(LIS3_IRQ1_DATA_READY | LIS3_IRQ2_DATA_READY));
}
- if (lis3_dev.whoami == WAI_3DC) {
+ if (lis3->whoami == WAI_3DC) {
ctlreg = CTRL_REG4;
selftest = CTRL4_ST0;
} else {
ctlreg = CTRL_REG1;
- if (lis3_dev.whoami == WAI_12B)
+ if (lis3->whoami == WAI_12B)
selftest = CTRL1_ST;
else
selftest = CTRL1_STP;
@@ -266,7 +278,9 @@
lis3->read(lis3, ctlreg, ®);
lis3->write(lis3, ctlreg, (reg | selftest));
- msleep(lis3->pwron_delay / lis3lv02d_get_odr());
+ ret = lis3lv02d_get_pwron_wait(lis3);
+ if (ret)
+ goto fail;
/* Read directly to avoid axis remap */
x = lis3->read_data(lis3, OUTX);
@@ -275,7 +289,9 @@
/* back to normal settings */
lis3->write(lis3, ctlreg, reg);
- msleep(lis3->pwron_delay / lis3lv02d_get_odr());
+ ret = lis3lv02d_get_pwron_wait(lis3);
+ if (ret)
+ goto fail;
results[0] = x - lis3->read_data(lis3, OUTX);
results[1] = y - lis3->read_data(lis3, OUTY);
@@ -283,9 +299,9 @@
ret = 0;
- if (lis3_dev.whoami == WAI_8B) {
+ if (lis3->whoami == WAI_8B) {
/* Restore original interrupt configuration */
- atomic_dec(&lis3_dev.wake_thread);
+ atomic_dec(&lis3->wake_thread);
lis3->write(lis3, CTRL_REG3, ctrl_reg_data);
lis3->irq_cfg = irq_cfg;
@@ -363,8 +379,9 @@
}
EXPORT_SYMBOL_GPL(lis3lv02d_poweroff);
-void lis3lv02d_poweron(struct lis3lv02d *lis3)
+int lis3lv02d_poweron(struct lis3lv02d *lis3)
{
+ int err;
u8 reg;
lis3->init(lis3);
@@ -384,35 +401,41 @@
lis3->write(lis3, CTRL_REG2, reg);
}
- /* LIS3 power on delay is quite long */
- msleep(lis3->pwron_delay / lis3lv02d_get_odr());
+ err = lis3lv02d_get_pwron_wait(lis3);
+ if (err)
+ return err;
if (lis3->reg_ctrl)
lis3_context_restore(lis3);
+
+ return 0;
}
EXPORT_SYMBOL_GPL(lis3lv02d_poweron);
static void lis3lv02d_joystick_poll(struct input_polled_dev *pidev)
{
+ struct lis3lv02d *lis3 = pidev->private;
int x, y, z;
- mutex_lock(&lis3_dev.mutex);
- lis3lv02d_get_xyz(&lis3_dev, &x, &y, &z);
+ mutex_lock(&lis3->mutex);
+ lis3lv02d_get_xyz(lis3, &x, &y, &z);
input_report_abs(pidev->input, ABS_X, x);
input_report_abs(pidev->input, ABS_Y, y);
input_report_abs(pidev->input, ABS_Z, z);
input_sync(pidev->input);
- mutex_unlock(&lis3_dev.mutex);
+ mutex_unlock(&lis3->mutex);
}
static void lis3lv02d_joystick_open(struct input_polled_dev *pidev)
{
- if (lis3_dev.pm_dev)
- pm_runtime_get_sync(lis3_dev.pm_dev);
+ struct lis3lv02d *lis3 = pidev->private;
- if (lis3_dev.pdata && lis3_dev.whoami == WAI_8B && lis3_dev.idev)
- atomic_set(&lis3_dev.wake_thread, 1);
+ if (lis3->pm_dev)
+ pm_runtime_get_sync(lis3->pm_dev);
+
+ if (lis3->pdata && lis3->whoami == WAI_8B && lis3->idev)
+ atomic_set(&lis3->wake_thread, 1);
/*
* Update coordinates for the case where poll interval is 0 and
* the chip in running purely under interrupt control
@@ -422,14 +445,18 @@
static void lis3lv02d_joystick_close(struct input_polled_dev *pidev)
{
- atomic_set(&lis3_dev.wake_thread, 0);
- if (lis3_dev.pm_dev)
- pm_runtime_put(lis3_dev.pm_dev);
+ struct lis3lv02d *lis3 = pidev->private;
+
+ atomic_set(&lis3->wake_thread, 0);
+ if (lis3->pm_dev)
+ pm_runtime_put(lis3->pm_dev);
}
-static irqreturn_t lis302dl_interrupt(int irq, void *dummy)
+static irqreturn_t lis302dl_interrupt(int irq, void *data)
{
- if (!test_bit(0, &lis3_dev.misc_opened))
+ struct lis3lv02d *lis3 = data;
+
+ if (!test_bit(0, &lis3->misc_opened))
goto out;
/*
@@ -437,12 +464,12 @@
* the lid is closed. This leads to interrupts as soon as a little move
* is done.
*/
- atomic_inc(&lis3_dev.count);
+ atomic_inc(&lis3->count);
- wake_up_interruptible(&lis3_dev.misc_wait);
- kill_fasync(&lis3_dev.async_queue, SIGIO, POLL_IN);
+ wake_up_interruptible(&lis3->misc_wait);
+ kill_fasync(&lis3->async_queue, SIGIO, POLL_IN);
out:
- if (atomic_read(&lis3_dev.wake_thread))
+ if (atomic_read(&lis3->wake_thread))
return IRQ_WAKE_THREAD;
return IRQ_HANDLED;
}
@@ -514,28 +541,37 @@
static int lis3lv02d_misc_open(struct inode *inode, struct file *file)
{
- if (test_and_set_bit(0, &lis3_dev.misc_opened))
+ struct lis3lv02d *lis3 = container_of(file->private_data,
+ struct lis3lv02d, miscdev);
+
+ if (test_and_set_bit(0, &lis3->misc_opened))
return -EBUSY; /* already open */
- if (lis3_dev.pm_dev)
- pm_runtime_get_sync(lis3_dev.pm_dev);
+ if (lis3->pm_dev)
+ pm_runtime_get_sync(lis3->pm_dev);
- atomic_set(&lis3_dev.count, 0);
+ atomic_set(&lis3->count, 0);
return 0;
}
static int lis3lv02d_misc_release(struct inode *inode, struct file *file)
{
- fasync_helper(-1, file, 0, &lis3_dev.async_queue);
- clear_bit(0, &lis3_dev.misc_opened); /* release the device */
- if (lis3_dev.pm_dev)
- pm_runtime_put(lis3_dev.pm_dev);
+ struct lis3lv02d *lis3 = container_of(file->private_data,
+ struct lis3lv02d, miscdev);
+
+ fasync_helper(-1, file, 0, &lis3->async_queue);
+ clear_bit(0, &lis3->misc_opened); /* release the device */
+ if (lis3->pm_dev)
+ pm_runtime_put(lis3->pm_dev);
return 0;
}
static ssize_t lis3lv02d_misc_read(struct file *file, char __user *buf,
size_t count, loff_t *pos)
{
+ struct lis3lv02d *lis3 = container_of(file->private_data,
+ struct lis3lv02d, miscdev);
+
DECLARE_WAITQUEUE(wait, current);
u32 data;
unsigned char byte_data;
@@ -544,10 +580,10 @@
if (count < 1)
return -EINVAL;
- add_wait_queue(&lis3_dev.misc_wait, &wait);
+ add_wait_queue(&lis3->misc_wait, &wait);
while (true) {
set_current_state(TASK_INTERRUPTIBLE);
- data = atomic_xchg(&lis3_dev.count, 0);
+ data = atomic_xchg(&lis3->count, 0);
if (data)
break;
@@ -577,22 +613,28 @@
out:
__set_current_state(TASK_RUNNING);
- remove_wait_queue(&lis3_dev.misc_wait, &wait);
+ remove_wait_queue(&lis3->misc_wait, &wait);
return retval;
}
static unsigned int lis3lv02d_misc_poll(struct file *file, poll_table *wait)
{
- poll_wait(file, &lis3_dev.misc_wait, wait);
- if (atomic_read(&lis3_dev.count))
+ struct lis3lv02d *lis3 = container_of(file->private_data,
+ struct lis3lv02d, miscdev);
+
+ poll_wait(file, &lis3->misc_wait, wait);
+ if (atomic_read(&lis3->count))
return POLLIN | POLLRDNORM;
return 0;
}
static int lis3lv02d_misc_fasync(int fd, struct file *file, int on)
{
- return fasync_helper(fd, file, on, &lis3_dev.async_queue);
+ struct lis3lv02d *lis3 = container_of(file->private_data,
+ struct lis3lv02d, miscdev);
+
+ return fasync_helper(fd, file, on, &lis3->async_queue);
}
static const struct file_operations lis3lv02d_misc_fops = {
@@ -605,85 +647,80 @@
.fasync = lis3lv02d_misc_fasync,
};
-static struct miscdevice lis3lv02d_misc_device = {
- .minor = MISC_DYNAMIC_MINOR,
- .name = "freefall",
- .fops = &lis3lv02d_misc_fops,
-};
-
-int lis3lv02d_joystick_enable(void)
+int lis3lv02d_joystick_enable(struct lis3lv02d *lis3)
{
struct input_dev *input_dev;
int err;
int max_val, fuzz, flat;
int btns[] = {BTN_X, BTN_Y, BTN_Z};
- if (lis3_dev.idev)
+ if (lis3->idev)
return -EINVAL;
- lis3_dev.idev = input_allocate_polled_device();
- if (!lis3_dev.idev)
+ lis3->idev = input_allocate_polled_device();
+ if (!lis3->idev)
return -ENOMEM;
- lis3_dev.idev->poll = lis3lv02d_joystick_poll;
- lis3_dev.idev->open = lis3lv02d_joystick_open;
- lis3_dev.idev->close = lis3lv02d_joystick_close;
- lis3_dev.idev->poll_interval = MDPS_POLL_INTERVAL;
- lis3_dev.idev->poll_interval_min = MDPS_POLL_MIN;
- lis3_dev.idev->poll_interval_max = MDPS_POLL_MAX;
- input_dev = lis3_dev.idev->input;
+ lis3->idev->poll = lis3lv02d_joystick_poll;
+ lis3->idev->open = lis3lv02d_joystick_open;
+ lis3->idev->close = lis3lv02d_joystick_close;
+ lis3->idev->poll_interval = MDPS_POLL_INTERVAL;
+ lis3->idev->poll_interval_min = MDPS_POLL_MIN;
+ lis3->idev->poll_interval_max = MDPS_POLL_MAX;
+ lis3->idev->private = lis3;
+ input_dev = lis3->idev->input;
input_dev->name = "ST LIS3LV02DL Accelerometer";
input_dev->phys = DRIVER_NAME "/input0";
input_dev->id.bustype = BUS_HOST;
input_dev->id.vendor = 0;
- input_dev->dev.parent = &lis3_dev.pdev->dev;
+ input_dev->dev.parent = &lis3->pdev->dev;
set_bit(EV_ABS, input_dev->evbit);
- max_val = (lis3_dev.mdps_max_val * lis3_dev.scale) / LIS3_ACCURACY;
- if (lis3_dev.whoami == WAI_12B) {
+ max_val = (lis3->mdps_max_val * lis3->scale) / LIS3_ACCURACY;
+ if (lis3->whoami == WAI_12B) {
fuzz = LIS3_DEFAULT_FUZZ_12B;
flat = LIS3_DEFAULT_FLAT_12B;
} else {
fuzz = LIS3_DEFAULT_FUZZ_8B;
flat = LIS3_DEFAULT_FLAT_8B;
}
- fuzz = (fuzz * lis3_dev.scale) / LIS3_ACCURACY;
- flat = (flat * lis3_dev.scale) / LIS3_ACCURACY;
+ fuzz = (fuzz * lis3->scale) / LIS3_ACCURACY;
+ flat = (flat * lis3->scale) / LIS3_ACCURACY;
input_set_abs_params(input_dev, ABS_X, -max_val, max_val, fuzz, flat);
input_set_abs_params(input_dev, ABS_Y, -max_val, max_val, fuzz, flat);
input_set_abs_params(input_dev, ABS_Z, -max_val, max_val, fuzz, flat);
- lis3_dev.mapped_btns[0] = lis3lv02d_get_axis(abs(lis3_dev.ac.x), btns);
- lis3_dev.mapped_btns[1] = lis3lv02d_get_axis(abs(lis3_dev.ac.y), btns);
- lis3_dev.mapped_btns[2] = lis3lv02d_get_axis(abs(lis3_dev.ac.z), btns);
+ lis3->mapped_btns[0] = lis3lv02d_get_axis(abs(lis3->ac.x), btns);
+ lis3->mapped_btns[1] = lis3lv02d_get_axis(abs(lis3->ac.y), btns);
+ lis3->mapped_btns[2] = lis3lv02d_get_axis(abs(lis3->ac.z), btns);
- err = input_register_polled_device(lis3_dev.idev);
+ err = input_register_polled_device(lis3->idev);
if (err) {
- input_free_polled_device(lis3_dev.idev);
- lis3_dev.idev = NULL;
+ input_free_polled_device(lis3->idev);
+ lis3->idev = NULL;
}
return err;
}
EXPORT_SYMBOL_GPL(lis3lv02d_joystick_enable);
-void lis3lv02d_joystick_disable(void)
+void lis3lv02d_joystick_disable(struct lis3lv02d *lis3)
{
- if (lis3_dev.irq)
- free_irq(lis3_dev.irq, &lis3_dev);
- if (lis3_dev.pdata && lis3_dev.pdata->irq2)
- free_irq(lis3_dev.pdata->irq2, &lis3_dev);
+ if (lis3->irq)
+ free_irq(lis3->irq, lis3);
+ if (lis3->pdata && lis3->pdata->irq2)
+ free_irq(lis3->pdata->irq2, lis3);
- if (!lis3_dev.idev)
+ if (!lis3->idev)
return;
- if (lis3_dev.irq)
- misc_deregister(&lis3lv02d_misc_device);
- input_unregister_polled_device(lis3_dev.idev);
- input_free_polled_device(lis3_dev.idev);
- lis3_dev.idev = NULL;
+ if (lis3->irq)
+ misc_deregister(&lis3->miscdev);
+ input_unregister_polled_device(lis3->idev);
+ input_free_polled_device(lis3->idev);
+ lis3->idev = NULL;
}
EXPORT_SYMBOL_GPL(lis3lv02d_joystick_disable);
@@ -708,6 +745,7 @@
static ssize_t lis3lv02d_selftest_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
+ struct lis3lv02d *lis3 = dev_get_drvdata(dev);
s16 values[3];
static const char ok[] = "OK";
@@ -715,8 +753,8 @@
static const char irq[] = "FAIL_IRQ";
const char *res;
- lis3lv02d_sysfs_poweron(&lis3_dev);
- switch (lis3lv02d_selftest(&lis3_dev, values)) {
+ lis3lv02d_sysfs_poweron(lis3);
+ switch (lis3lv02d_selftest(lis3, values)) {
case SELFTEST_FAIL:
res = fail;
break;
@@ -735,33 +773,37 @@
static ssize_t lis3lv02d_position_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
+ struct lis3lv02d *lis3 = dev_get_drvdata(dev);
int x, y, z;
- lis3lv02d_sysfs_poweron(&lis3_dev);
- mutex_lock(&lis3_dev.mutex);
- lis3lv02d_get_xyz(&lis3_dev, &x, &y, &z);
- mutex_unlock(&lis3_dev.mutex);
+ lis3lv02d_sysfs_poweron(lis3);
+ mutex_lock(&lis3->mutex);
+ lis3lv02d_get_xyz(lis3, &x, &y, &z);
+ mutex_unlock(&lis3->mutex);
return sprintf(buf, "(%d,%d,%d)\n", x, y, z);
}
static ssize_t lis3lv02d_rate_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
- lis3lv02d_sysfs_poweron(&lis3_dev);
- return sprintf(buf, "%d\n", lis3lv02d_get_odr());
+ struct lis3lv02d *lis3 = dev_get_drvdata(dev);
+
+ lis3lv02d_sysfs_poweron(lis3);
+ return sprintf(buf, "%d\n", lis3lv02d_get_odr(lis3));
}
static ssize_t lis3lv02d_rate_set(struct device *dev,
struct device_attribute *attr, const char *buf,
size_t count)
{
+ struct lis3lv02d *lis3 = dev_get_drvdata(dev);
unsigned long rate;
if (strict_strtoul(buf, 0, &rate))
return -EINVAL;
- lis3lv02d_sysfs_poweron(&lis3_dev);
- if (lis3lv02d_set_odr(rate))
+ lis3lv02d_sysfs_poweron(lis3);
+ if (lis3lv02d_set_odr(lis3, rate))
return -EINVAL;
return count;
@@ -790,6 +832,7 @@
if (IS_ERR(lis3->pdev))
return PTR_ERR(lis3->pdev);
+ platform_set_drvdata(lis3->pdev, lis3);
return sysfs_create_group(&lis3->pdev->dev.kobj, &lis3lv02d_attribute_group);
}
@@ -803,7 +846,7 @@
/* SYSFS may have left chip running. Turn off if necessary */
if (!pm_runtime_suspended(lis3->pm_dev))
- lis3lv02d_poweroff(&lis3_dev);
+ lis3lv02d_poweroff(lis3);
pm_runtime_disable(lis3->pm_dev);
pm_runtime_set_suspended(lis3->pm_dev);
@@ -813,24 +856,24 @@
}
EXPORT_SYMBOL_GPL(lis3lv02d_remove_fs);
-static void lis3lv02d_8b_configure(struct lis3lv02d *dev,
+static void lis3lv02d_8b_configure(struct lis3lv02d *lis3,
struct lis3lv02d_platform_data *p)
{
int err;
int ctrl2 = p->hipass_ctrl;
if (p->click_flags) {
- dev->write(dev, CLICK_CFG, p->click_flags);
- dev->write(dev, CLICK_TIMELIMIT, p->click_time_limit);
- dev->write(dev, CLICK_LATENCY, p->click_latency);
- dev->write(dev, CLICK_WINDOW, p->click_window);
- dev->write(dev, CLICK_THSZ, p->click_thresh_z & 0xf);
- dev->write(dev, CLICK_THSY_X,
+ lis3->write(lis3, CLICK_CFG, p->click_flags);
+ lis3->write(lis3, CLICK_TIMELIMIT, p->click_time_limit);
+ lis3->write(lis3, CLICK_LATENCY, p->click_latency);
+ lis3->write(lis3, CLICK_WINDOW, p->click_window);
+ lis3->write(lis3, CLICK_THSZ, p->click_thresh_z & 0xf);
+ lis3->write(lis3, CLICK_THSY_X,
(p->click_thresh_x & 0xf) |
(p->click_thresh_y << 4));
- if (dev->idev) {
- struct input_dev *input_dev = lis3_dev.idev->input;
+ if (lis3->idev) {
+ struct input_dev *input_dev = lis3->idev->input;
input_set_capability(input_dev, EV_KEY, BTN_X);
input_set_capability(input_dev, EV_KEY, BTN_Y);
input_set_capability(input_dev, EV_KEY, BTN_Z);
@@ -838,22 +881,22 @@
}
if (p->wakeup_flags) {
- dev->write(dev, FF_WU_CFG_1, p->wakeup_flags);
- dev->write(dev, FF_WU_THS_1, p->wakeup_thresh & 0x7f);
+ lis3->write(lis3, FF_WU_CFG_1, p->wakeup_flags);
+ lis3->write(lis3, FF_WU_THS_1, p->wakeup_thresh & 0x7f);
/* pdata value + 1 to keep this backward compatible*/
- dev->write(dev, FF_WU_DURATION_1, p->duration1 + 1);
+ lis3->write(lis3, FF_WU_DURATION_1, p->duration1 + 1);
ctrl2 ^= HP_FF_WU1; /* Xor to keep compatible with old pdata*/
}
if (p->wakeup_flags2) {
- dev->write(dev, FF_WU_CFG_2, p->wakeup_flags2);
- dev->write(dev, FF_WU_THS_2, p->wakeup_thresh2 & 0x7f);
+ lis3->write(lis3, FF_WU_CFG_2, p->wakeup_flags2);
+ lis3->write(lis3, FF_WU_THS_2, p->wakeup_thresh2 & 0x7f);
/* pdata value + 1 to keep this backward compatible*/
- dev->write(dev, FF_WU_DURATION_2, p->duration2 + 1);
+ lis3->write(lis3, FF_WU_DURATION_2, p->duration2 + 1);
ctrl2 ^= HP_FF_WU2; /* Xor to keep compatible with old pdata*/
}
/* Configure hipass filters */
- dev->write(dev, CTRL_REG2, ctrl2);
+ lis3->write(lis3, CTRL_REG2, ctrl2);
if (p->irq2) {
err = request_threaded_irq(p->irq2,
@@ -861,7 +904,7 @@
lis302dl_interrupt_thread2_8b,
IRQF_TRIGGER_RISING | IRQF_ONESHOT |
(p->irq_flags2 & IRQF_TRIGGER_MASK),
- DRIVER_NAME, &lis3_dev);
+ DRIVER_NAME, lis3);
if (err < 0)
pr_err("No second IRQ. Limited functionality\n");
}
@@ -871,93 +914,97 @@
* Initialise the accelerometer and the various subsystems.
* Should be rather independent of the bus system.
*/
-int lis3lv02d_init_device(struct lis3lv02d *dev)
+int lis3lv02d_init_device(struct lis3lv02d *lis3)
{
int err;
irq_handler_t thread_fn;
int irq_flags = 0;
- dev->whoami = lis3lv02d_read_8(dev, WHO_AM_I);
+ lis3->whoami = lis3lv02d_read_8(lis3, WHO_AM_I);
- switch (dev->whoami) {
+ switch (lis3->whoami) {
case WAI_12B:
pr_info("12 bits sensor found\n");
- dev->read_data = lis3lv02d_read_12;
- dev->mdps_max_val = 2048;
- dev->pwron_delay = LIS3_PWRON_DELAY_WAI_12B;
- dev->odrs = lis3_12_rates;
- dev->odr_mask = CTRL1_DF0 | CTRL1_DF1;
- dev->scale = LIS3_SENSITIVITY_12B;
- dev->regs = lis3_wai12_regs;
- dev->regs_size = ARRAY_SIZE(lis3_wai12_regs);
+ lis3->read_data = lis3lv02d_read_12;
+ lis3->mdps_max_val = 2048;
+ lis3->pwron_delay = LIS3_PWRON_DELAY_WAI_12B;
+ lis3->odrs = lis3_12_rates;
+ lis3->odr_mask = CTRL1_DF0 | CTRL1_DF1;
+ lis3->scale = LIS3_SENSITIVITY_12B;
+ lis3->regs = lis3_wai12_regs;
+ lis3->regs_size = ARRAY_SIZE(lis3_wai12_regs);
break;
case WAI_8B:
pr_info("8 bits sensor found\n");
- dev->read_data = lis3lv02d_read_8;
- dev->mdps_max_val = 128;
- dev->pwron_delay = LIS3_PWRON_DELAY_WAI_8B;
- dev->odrs = lis3_8_rates;
- dev->odr_mask = CTRL1_DR;
- dev->scale = LIS3_SENSITIVITY_8B;
- dev->regs = lis3_wai8_regs;
- dev->regs_size = ARRAY_SIZE(lis3_wai8_regs);
+ lis3->read_data = lis3lv02d_read_8;
+ lis3->mdps_max_val = 128;
+ lis3->pwron_delay = LIS3_PWRON_DELAY_WAI_8B;
+ lis3->odrs = lis3_8_rates;
+ lis3->odr_mask = CTRL1_DR;
+ lis3->scale = LIS3_SENSITIVITY_8B;
+ lis3->regs = lis3_wai8_regs;
+ lis3->regs_size = ARRAY_SIZE(lis3_wai8_regs);
break;
case WAI_3DC:
pr_info("8 bits 3DC sensor found\n");
- dev->read_data = lis3lv02d_read_8;
- dev->mdps_max_val = 128;
- dev->pwron_delay = LIS3_PWRON_DELAY_WAI_8B;
- dev->odrs = lis3_3dc_rates;
- dev->odr_mask = CTRL1_ODR0|CTRL1_ODR1|CTRL1_ODR2|CTRL1_ODR3;
- dev->scale = LIS3_SENSITIVITY_8B;
+ lis3->read_data = lis3lv02d_read_8;
+ lis3->mdps_max_val = 128;
+ lis3->pwron_delay = LIS3_PWRON_DELAY_WAI_8B;
+ lis3->odrs = lis3_3dc_rates;
+ lis3->odr_mask = CTRL1_ODR0|CTRL1_ODR1|CTRL1_ODR2|CTRL1_ODR3;
+ lis3->scale = LIS3_SENSITIVITY_8B;
break;
default:
- pr_err("unknown sensor type 0x%X\n", dev->whoami);
+ pr_err("unknown sensor type 0x%X\n", lis3->whoami);
return -EINVAL;
}
- dev->reg_cache = kzalloc(max(sizeof(lis3_wai8_regs),
+ lis3->reg_cache = kzalloc(max(sizeof(lis3_wai8_regs),
sizeof(lis3_wai12_regs)), GFP_KERNEL);
- if (dev->reg_cache == NULL) {
+ if (lis3->reg_cache == NULL) {
printk(KERN_ERR DRIVER_NAME "out of memory\n");
return -ENOMEM;
}
- mutex_init(&dev->mutex);
- atomic_set(&dev->wake_thread, 0);
+ mutex_init(&lis3->mutex);
+ atomic_set(&lis3->wake_thread, 0);
- lis3lv02d_add_fs(dev);
- lis3lv02d_poweron(dev);
-
- if (dev->pm_dev) {
- pm_runtime_set_active(dev->pm_dev);
- pm_runtime_enable(dev->pm_dev);
+ lis3lv02d_add_fs(lis3);
+ err = lis3lv02d_poweron(lis3);
+ if (err) {
+ lis3lv02d_remove_fs(lis3);
+ return err;
}
- if (lis3lv02d_joystick_enable())
+ if (lis3->pm_dev) {
+ pm_runtime_set_active(lis3->pm_dev);
+ pm_runtime_enable(lis3->pm_dev);
+ }
+
+ if (lis3lv02d_joystick_enable(lis3))
pr_err("joystick initialization failed\n");
/* passing in platform specific data is purely optional and only
* used by the SPI transport layer at the moment */
- if (dev->pdata) {
- struct lis3lv02d_platform_data *p = dev->pdata;
+ if (lis3->pdata) {
+ struct lis3lv02d_platform_data *p = lis3->pdata;
- if (dev->whoami == WAI_8B)
- lis3lv02d_8b_configure(dev, p);
+ if (lis3->whoami == WAI_8B)
+ lis3lv02d_8b_configure(lis3, p);
irq_flags = p->irq_flags1 & IRQF_TRIGGER_MASK;
- dev->irq_cfg = p->irq_cfg;
+ lis3->irq_cfg = p->irq_cfg;
if (p->irq_cfg)
- dev->write(dev, CTRL_REG3, p->irq_cfg);
+ lis3->write(lis3, CTRL_REG3, p->irq_cfg);
if (p->default_rate)
- lis3lv02d_set_odr(p->default_rate);
+ lis3lv02d_set_odr(lis3, p->default_rate);
}
/* bail if we did not get an IRQ from the bus layer */
- if (!dev->irq) {
+ if (!lis3->irq) {
pr_debug("No IRQ. Disabling /dev/freefall\n");
goto out;
}
@@ -973,23 +1020,27 @@
* io-apic is not configurable (and generates a warning) but I keep it
* in case of support for other hardware.
*/
- if (dev->pdata && dev->whoami == WAI_8B)
+ if (lis3->pdata && lis3->whoami == WAI_8B)
thread_fn = lis302dl_interrupt_thread1_8b;
else
thread_fn = NULL;
- err = request_threaded_irq(dev->irq, lis302dl_interrupt,
+ err = request_threaded_irq(lis3->irq, lis302dl_interrupt,
thread_fn,
IRQF_TRIGGER_RISING | IRQF_ONESHOT |
irq_flags,
- DRIVER_NAME, &lis3_dev);
+ DRIVER_NAME, lis3);
if (err < 0) {
pr_err("Cannot get IRQ\n");
goto out;
}
- if (misc_register(&lis3lv02d_misc_device))
+ lis3->miscdev.minor = MISC_DYNAMIC_MINOR;
+ lis3->miscdev.name = "freefall";
+ lis3->miscdev.fops = &lis3lv02d_misc_fops;
+
+ if (misc_register(&lis3->miscdev))
pr_err("misc_register failed\n");
out:
return 0;
diff --git a/drivers/misc/lis3lv02d/lis3lv02d.h b/drivers/misc/lis3lv02d/lis3lv02d.h
index a193958..2b1482a 100644
--- a/drivers/misc/lis3lv02d/lis3lv02d.h
+++ b/drivers/misc/lis3lv02d/lis3lv02d.h
@@ -21,6 +21,7 @@
#include <linux/platform_device.h>
#include <linux/input-polldev.h>
#include <linux/regulator/consumer.h>
+#include <linux/miscdevice.h>
/*
* This driver tries to support the "digital" accelerometer chips from
@@ -273,6 +274,8 @@
struct fasync_struct *async_queue; /* queue for the misc device */
wait_queue_head_t misc_wait; /* Wait queue for the misc device */
unsigned long misc_opened; /* bit0: whether the device is open */
+ struct miscdevice miscdev;
+
int data_ready_count[2];
atomic_t wake_thread;
unsigned char irq_cfg;
@@ -282,10 +285,10 @@
};
int lis3lv02d_init_device(struct lis3lv02d *lis3);
-int lis3lv02d_joystick_enable(void);
-void lis3lv02d_joystick_disable(void);
+int lis3lv02d_joystick_enable(struct lis3lv02d *lis3);
+void lis3lv02d_joystick_disable(struct lis3lv02d *lis3);
void lis3lv02d_poweroff(struct lis3lv02d *lis3);
-void lis3lv02d_poweron(struct lis3lv02d *lis3);
+int lis3lv02d_poweron(struct lis3lv02d *lis3);
int lis3lv02d_remove_fs(struct lis3lv02d *lis3);
extern struct lis3lv02d lis3_dev;
diff --git a/drivers/misc/lis3lv02d/lis3lv02d_i2c.c b/drivers/misc/lis3lv02d/lis3lv02d_i2c.c
index b20dfb4..c02fea0 100644
--- a/drivers/misc/lis3lv02d/lis3lv02d_i2c.c
+++ b/drivers/misc/lis3lv02d/lis3lv02d_i2c.c
@@ -79,8 +79,7 @@
u8 reg;
int ret;
- if (lis3->reg_ctrl)
- lis3_reg_ctrl(lis3, LIS3_REG_ON);
+ lis3_reg_ctrl(lis3, LIS3_REG_ON);
lis3->read(lis3, WHO_AM_I, ®);
if (reg != lis3->whoami)
@@ -106,10 +105,6 @@
struct lis3lv02d_platform_data *pdata = client->dev.platform_data;
if (pdata) {
- /* Regulator control is optional */
- if (pdata->driver_features & LIS3_USE_REGULATOR_CTRL)
- lis3_dev.reg_ctrl = lis3_reg_ctrl;
-
if ((pdata->driver_features & LIS3_USE_BLOCK_READ) &&
(i2c_check_functionality(client->adapter,
I2C_FUNC_SMBUS_I2C_BLOCK)))
@@ -131,15 +126,13 @@
goto fail;
}
- if (lis3_dev.reg_ctrl) {
- lis3_dev.regulators[0].supply = reg_vdd;
- lis3_dev.regulators[1].supply = reg_vdd_io;
- ret = regulator_bulk_get(&client->dev,
- ARRAY_SIZE(lis3_dev.regulators),
- lis3_dev.regulators);
- if (ret < 0)
- goto fail;
- }
+ lis3_dev.regulators[0].supply = reg_vdd;
+ lis3_dev.regulators[1].supply = reg_vdd_io;
+ ret = regulator_bulk_get(&client->dev,
+ ARRAY_SIZE(lis3_dev.regulators),
+ lis3_dev.regulators);
+ if (ret < 0)
+ goto fail;
lis3_dev.pdata = pdata;
lis3_dev.bus_priv = client;
@@ -153,16 +146,19 @@
i2c_set_clientdata(client, &lis3_dev);
/* Provide power over the init call */
- if (lis3_dev.reg_ctrl)
- lis3_reg_ctrl(&lis3_dev, LIS3_REG_ON);
+ lis3_reg_ctrl(&lis3_dev, LIS3_REG_ON);
ret = lis3lv02d_init_device(&lis3_dev);
- if (lis3_dev.reg_ctrl)
- lis3_reg_ctrl(&lis3_dev, LIS3_REG_OFF);
+ lis3_reg_ctrl(&lis3_dev, LIS3_REG_OFF);
- if (ret == 0)
- return 0;
+ if (ret)
+ goto fail2;
+ return 0;
+
+fail2:
+ regulator_bulk_free(ARRAY_SIZE(lis3_dev.regulators),
+ lis3_dev.regulators);
fail:
if (pdata && pdata->release_resources)
pdata->release_resources();
@@ -177,12 +173,11 @@
if (pdata && pdata->release_resources)
pdata->release_resources();
- lis3lv02d_joystick_disable();
+ lis3lv02d_joystick_disable(lis3);
lis3lv02d_remove_fs(&lis3_dev);
- if (lis3_dev.reg_ctrl)
- regulator_bulk_free(ARRAY_SIZE(lis3->regulators),
- lis3_dev.regulators);
+ regulator_bulk_free(ARRAY_SIZE(lis3->regulators),
+ lis3_dev.regulators);
return 0;
}
diff --git a/drivers/misc/lis3lv02d/lis3lv02d_spi.c b/drivers/misc/lis3lv02d/lis3lv02d_spi.c
index c1f8a8f..b2c1be1 100644
--- a/drivers/misc/lis3lv02d/lis3lv02d_spi.c
+++ b/drivers/misc/lis3lv02d/lis3lv02d_spi.c
@@ -83,7 +83,7 @@
static int __devexit lis302dl_spi_remove(struct spi_device *spi)
{
struct lis3lv02d *lis3 = spi_get_drvdata(spi);
- lis3lv02d_joystick_disable();
+ lis3lv02d_joystick_disable(lis3);
lis3lv02d_poweroff(lis3);
return lis3lv02d_remove_fs(&lis3_dev);
diff --git a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
index fca6616..8fda331c 100644
--- a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
+++ b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
@@ -581,8 +581,9 @@
* printk / logging functions
*/
+__printf(3, 4)
int en_print(const char *level, const struct mlx4_en_priv *priv,
- const char *format, ...) __attribute__ ((format (printf, 3, 4)));
+ const char *format, ...);
#define en_dbg(mlevel, priv, format, arg...) \
do { \
diff --git a/drivers/net/wireless/at76c50x-usb.c b/drivers/net/wireless/at76c50x-usb.c
index 39322d4..4045e5a 100644
--- a/drivers/net/wireless/at76c50x-usb.c
+++ b/drivers/net/wireless/at76c50x-usb.c
@@ -517,7 +517,7 @@
goto exit;
while (len--) {
- obuf = pack_hex_byte(obuf, *ibuf++);
+ obuf = hex_byte_pack(obuf, *ibuf++);
*obuf++ = '-';
}
obuf--;
diff --git a/drivers/net/wireless/ath/ath.h b/drivers/net/wireless/ath/ath.h
index 908fdbc..0f9ee46c 100644
--- a/drivers/net/wireless/ath/ath.h
+++ b/drivers/net/wireless/ath/ath.h
@@ -173,8 +173,7 @@
void ath_hw_cycle_counters_update(struct ath_common *common);
int32_t ath_hw_get_listen_time(struct ath_common *common);
-extern __attribute__((format (printf, 2, 3)))
-void ath_printk(const char *level, const char *fmt, ...);
+extern __printf(2, 3) void ath_printk(const char *level, const char *fmt, ...);
#define _ath_printk(level, common, fmt, ...) \
do { \
@@ -258,7 +257,7 @@
#else
-static inline __attribute__((format (printf, 3, 4)))
+static inline __attribute__ ((format (printf, 3, 4)))
void ath_dbg(struct ath_common *common, enum ATH_DEBUG dbg_mask,
const char *fmt, ...)
{
diff --git a/drivers/net/wireless/ath/ath5k/debug.h b/drivers/net/wireless/ath/ath5k/debug.h
index 7f37df3..0a3f916 100644
--- a/drivers/net/wireless/ath/ath5k/debug.h
+++ b/drivers/net/wireless/ath/ath5k/debug.h
@@ -141,10 +141,10 @@
#include <linux/compiler.h>
-static inline void __attribute__ ((format (printf, 3, 4)))
+static inline __printf(3, 4) void
ATH5K_DBG(struct ath5k_hw *ah, unsigned int m, const char *fmt, ...) {}
-static inline void __attribute__ ((format (printf, 3, 4)))
+static inline __printf(3, 4) void
ATH5K_DBG_UNLIMIT(struct ath5k_hw *ah, unsigned int m, const char *fmt, ...)
{}
diff --git a/drivers/net/wireless/ath/ath6kl/debug.h b/drivers/net/wireless/ath/ath6kl/debug.h
index 9288a3c..7b7675f 100644
--- a/drivers/net/wireless/ath/ath6kl/debug.h
+++ b/drivers/net/wireless/ath/ath6kl/debug.h
@@ -44,8 +44,8 @@
};
extern unsigned int debug_mask;
-extern int ath6kl_printk(const char *level, const char *fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
+extern __printf(2, 3)
+int ath6kl_printk(const char *level, const char *fmt, ...);
#define ath6kl_info(fmt, ...) \
ath6kl_printk(KERN_INFO, fmt, ##__VA_ARGS__)
diff --git a/drivers/net/wireless/b43/b43.h b/drivers/net/wireless/b43/b43.h
index 447a230..37110df 100644
--- a/drivers/net/wireless/b43/b43.h
+++ b/drivers/net/wireless/b43/b43.h
@@ -1011,14 +1011,10 @@
}
/* Message printing */
-void b43info(struct b43_wl *wl, const char *fmt, ...)
- __attribute__ ((format(printf, 2, 3)));
-void b43err(struct b43_wl *wl, const char *fmt, ...)
- __attribute__ ((format(printf, 2, 3)));
-void b43warn(struct b43_wl *wl, const char *fmt, ...)
- __attribute__ ((format(printf, 2, 3)));
-void b43dbg(struct b43_wl *wl, const char *fmt, ...)
- __attribute__ ((format(printf, 2, 3)));
+__printf(2, 3) void b43info(struct b43_wl *wl, const char *fmt, ...);
+__printf(2, 3) void b43err(struct b43_wl *wl, const char *fmt, ...);
+__printf(2, 3) void b43warn(struct b43_wl *wl, const char *fmt, ...);
+__printf(2, 3) void b43dbg(struct b43_wl *wl, const char *fmt, ...);
/* A WARN_ON variant that vanishes when b43 debugging is disabled.
diff --git a/drivers/net/wireless/b43legacy/b43legacy.h b/drivers/net/wireless/b43legacy/b43legacy.h
index 12b5182..1d4fc9d 100644
--- a/drivers/net/wireless/b43legacy/b43legacy.h
+++ b/drivers/net/wireless/b43legacy/b43legacy.h
@@ -810,15 +810,15 @@
/* Message printing */
-void b43legacyinfo(struct b43legacy_wl *wl, const char *fmt, ...)
- __attribute__((format(printf, 2, 3)));
-void b43legacyerr(struct b43legacy_wl *wl, const char *fmt, ...)
- __attribute__((format(printf, 2, 3)));
-void b43legacywarn(struct b43legacy_wl *wl, const char *fmt, ...)
- __attribute__((format(printf, 2, 3)));
+__printf(2, 3)
+void b43legacyinfo(struct b43legacy_wl *wl, const char *fmt, ...);
+__printf(2, 3)
+void b43legacyerr(struct b43legacy_wl *wl, const char *fmt, ...);
+__printf(2, 3)
+void b43legacywarn(struct b43legacy_wl *wl, const char *fmt, ...);
#if B43legacy_DEBUG
-void b43legacydbg(struct b43legacy_wl *wl, const char *fmt, ...)
- __attribute__((format(printf, 2, 3)));
+__printf(2, 3)
+void b43legacydbg(struct b43legacy_wl *wl, const char *fmt, ...);
#else /* DEBUG */
# define b43legacydbg(wl, fmt...) do { /* nothing */ } while (0)
#endif /* DEBUG */
diff --git a/drivers/platform/x86/hp_accel.c b/drivers/platform/x86/hp_accel.c
index 64b4548..22b2dfa 100644
--- a/drivers/platform/x86/hp_accel.c
+++ b/drivers/platform/x86/hp_accel.c
@@ -210,6 +210,8 @@
AXIS_DMI_MATCH("NC6715x", "HP Compaq 6715", y_inverted),
AXIS_DMI_MATCH("NC693xx", "HP EliteBook 693", xy_rotated_right),
AXIS_DMI_MATCH("NC693xx", "HP EliteBook 853", xy_swap),
+ AXIS_DMI_MATCH("NC854xx", "HP EliteBook 854", y_inverted),
+ AXIS_DMI_MATCH("NC273xx", "HP EliteBook 273", y_inverted),
/* Intel-based HP Pavilion dv5 */
AXIS_DMI_MATCH2("HPDV5_I",
PRODUCT_NAME, "HP Pavilion dv5",
@@ -228,6 +230,7 @@
AXIS_DMI_MATCH("HPB452x", "HP ProBook 452", y_inverted),
AXIS_DMI_MATCH("HPB522x", "HP ProBook 522", xy_swap),
AXIS_DMI_MATCH("HPB532x", "HP ProBook 532", y_inverted),
+ AXIS_DMI_MATCH("HPB655x", "HP ProBook 655", xy_swap_inverted),
AXIS_DMI_MATCH("Mini510x", "HP Mini 510", xy_rotated_left_usd),
AXIS_DMI_MATCH("HPB63xx", "HP ProBook 63", xy_swap),
AXIS_DMI_MATCH("HPB64xx", "HP ProBook 64", xy_swap),
@@ -325,7 +328,7 @@
INIT_WORK(&hpled_led.work, delayed_set_status_worker);
ret = led_classdev_register(NULL, &hpled_led.led_classdev);
if (ret) {
- lis3lv02d_joystick_disable();
+ lis3lv02d_joystick_disable(&lis3_dev);
lis3lv02d_poweroff(&lis3_dev);
flush_work(&hpled_led.work);
return ret;
@@ -339,7 +342,7 @@
if (!device)
return -EINVAL;
- lis3lv02d_joystick_disable();
+ lis3lv02d_joystick_disable(&lis3_dev);
lis3lv02d_poweroff(&lis3_dev);
led_classdev_unregister(&hpled_led.led_classdev);
@@ -359,8 +362,7 @@
static int lis3lv02d_resume(struct acpi_device *device)
{
- lis3lv02d_poweron(&lis3_dev);
- return 0;
+ return lis3lv02d_poweron(&lis3_dev);
}
#else
#define lis3lv02d_suspend NULL
diff --git a/drivers/staging/iio/trigger.h b/drivers/staging/iio/trigger.h
index 598fcb3..5cc42a6 100644
--- a/drivers/staging/iio/trigger.h
+++ b/drivers/staging/iio/trigger.h
@@ -115,8 +115,7 @@
irqreturn_t iio_trigger_generic_data_rdy_poll(int irq, void *private);
-struct iio_trigger *iio_allocate_trigger(const char *fmt, ...)
- __attribute__((format(printf, 1, 2)));
+__printf(1, 2) struct iio_trigger *iio_allocate_trigger(const char *fmt, ...);
void iio_free_trigger(struct iio_trigger *trig);
#endif /* _IIO_TRIGGER_H_ */
diff --git a/drivers/video/backlight/adp8870_bl.c b/drivers/video/backlight/adp8870_bl.c
index 98e0304..6c68a68 100644
--- a/drivers/video/backlight/adp8870_bl.c
+++ b/drivers/video/backlight/adp8870_bl.c
@@ -931,7 +931,6 @@
out1:
backlight_device_unregister(bl);
out2:
- i2c_set_clientdata(client, NULL);
kfree(data);
return ret;
@@ -951,7 +950,6 @@
&adp8870_bl_attr_group);
backlight_device_unregister(data->bl);
- i2c_set_clientdata(client, NULL);
kfree(data);
return 0;
diff --git a/drivers/video/backlight/generic_bl.c b/drivers/video/backlight/generic_bl.c
index 8c6befd..adb1914 100644
--- a/drivers/video/backlight/generic_bl.c
+++ b/drivers/video/backlight/generic_bl.c
@@ -56,7 +56,7 @@
* Called when the battery is low to limit the backlight intensity.
* If limit==0 clear any limit, otherwise limit the intensity
*/
-void corgibl_limit_intensity(int limit)
+void genericbl_limit_intensity(int limit)
{
struct backlight_device *bd = generic_backlight_device;
@@ -68,7 +68,7 @@
backlight_update_status(generic_backlight_device);
mutex_unlock(&bd->ops_lock);
}
-EXPORT_SYMBOL(corgibl_limit_intensity);
+EXPORT_SYMBOL(genericbl_limit_intensity);
static const struct backlight_ops genericbl_ops = {
.options = BL_CORE_SUSPENDRESUME,
diff --git a/drivers/video/backlight/l4f00242t03.c b/drivers/video/backlight/l4f00242t03.c
index 98ad3e5..3543f1b 100644
--- a/drivers/video/backlight/l4f00242t03.c
+++ b/drivers/video/backlight/l4f00242t03.c
@@ -52,15 +52,11 @@
dev_dbg(&spi->dev, "initializing LCD\n");
- if (priv->io_reg) {
- regulator_set_voltage(priv->io_reg, 1800000, 1800000);
- regulator_enable(priv->io_reg);
- }
+ regulator_set_voltage(priv->io_reg, 1800000, 1800000);
+ regulator_enable(priv->io_reg);
- if (priv->core_reg) {
- regulator_set_voltage(priv->core_reg, 2800000, 2800000);
- regulator_enable(priv->core_reg);
- }
+ regulator_set_voltage(priv->core_reg, 2800000, 2800000);
+ regulator_enable(priv->core_reg);
l4f00242t03_reset(pdata->reset_gpio);
@@ -78,11 +74,8 @@
gpio_set_value(pdata->data_enable_gpio, 0);
- if (priv->io_reg)
- regulator_disable(priv->io_reg);
-
- if (priv->core_reg)
- regulator_disable(priv->core_reg);
+ regulator_disable(priv->io_reg);
+ regulator_disable(priv->core_reg);
}
static int l4f00242t03_lcd_power_get(struct lcd_device *ld)
@@ -178,47 +171,34 @@
priv->spi = spi;
- ret = gpio_request(pdata->reset_gpio, "lcd l4f00242t03 reset");
+ ret = gpio_request_one(pdata->reset_gpio, GPIOF_OUT_INIT_HIGH,
+ "lcd l4f00242t03 reset");
if (ret) {
dev_err(&spi->dev,
"Unable to get the lcd l4f00242t03 reset gpio.\n");
goto err;
}
- ret = gpio_direction_output(pdata->reset_gpio, 1);
- if (ret)
- goto err2;
-
- ret = gpio_request(pdata->data_enable_gpio,
- "lcd l4f00242t03 data enable");
+ ret = gpio_request_one(pdata->data_enable_gpio, GPIOF_OUT_INIT_LOW,
+ "lcd l4f00242t03 data enable");
if (ret) {
dev_err(&spi->dev,
"Unable to get the lcd l4f00242t03 data en gpio.\n");
goto err2;
}
- ret = gpio_direction_output(pdata->data_enable_gpio, 0);
- if (ret)
+ priv->io_reg = regulator_get(&spi->dev, "vdd");
+ if (IS_ERR(priv->io_reg)) {
+ dev_err(&spi->dev, "%s: Unable to get the IO regulator\n",
+ __func__);
goto err3;
-
- if (pdata->io_supply) {
- priv->io_reg = regulator_get(NULL, pdata->io_supply);
-
- if (IS_ERR(priv->io_reg)) {
- pr_err("%s: Unable to get the IO regulator\n",
- __func__);
- goto err3;
- }
}
- if (pdata->core_supply) {
- priv->core_reg = regulator_get(NULL, pdata->core_supply);
-
- if (IS_ERR(priv->core_reg)) {
- pr_err("%s: Unable to get the core regulator\n",
- __func__);
- goto err4;
- }
+ priv->core_reg = regulator_get(&spi->dev, "vcore");
+ if (IS_ERR(priv->core_reg)) {
+ dev_err(&spi->dev, "%s: Unable to get the core regulator\n",
+ __func__);
+ goto err4;
}
priv->ld = lcd_device_register("l4f00242t03",
@@ -238,11 +218,9 @@
return 0;
err5:
- if (priv->core_reg)
- regulator_put(priv->core_reg);
+ regulator_put(priv->core_reg);
err4:
- if (priv->io_reg)
- regulator_put(priv->io_reg);
+ regulator_put(priv->io_reg);
err3:
gpio_free(pdata->data_enable_gpio);
err2:
@@ -266,10 +244,8 @@
gpio_free(pdata->data_enable_gpio);
gpio_free(pdata->reset_gpio);
- if (priv->io_reg)
- regulator_put(priv->io_reg);
- if (priv->core_reg)
- regulator_put(priv->core_reg);
+ regulator_put(priv->io_reg);
+ regulator_put(priv->core_reg);
kfree(priv);
diff --git a/fs/Kconfig b/fs/Kconfig
index 9fe0b34..5f4c45d 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -109,7 +109,7 @@
source "fs/sysfs/Kconfig"
config TMPFS
- bool "Virtual memory file system support (former shm fs)"
+ bool "Tmpfs virtual memory file system support (former shm fs)"
depends on SHMEM
help
Tmpfs is a file system which keeps all files in virtual memory.
diff --git a/fs/aio.c b/fs/aio.c
index e29ec48..632b235 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -1387,13 +1387,13 @@
ret = compat_rw_copy_check_uvector(type,
(struct compat_iovec __user *)kiocb->ki_buf,
kiocb->ki_nbytes, 1, &kiocb->ki_inline_vec,
- &kiocb->ki_iovec);
+ &kiocb->ki_iovec, 1);
else
#endif
ret = rw_copy_check_uvector(type,
(struct iovec __user *)kiocb->ki_buf,
kiocb->ki_nbytes, 1, &kiocb->ki_inline_vec,
- &kiocb->ki_iovec);
+ &kiocb->ki_iovec, 1);
if (ret < 0)
goto out;
diff --git a/fs/buffer.c b/fs/buffer.c
index 936d603..70a1974 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -213,13 +213,16 @@
* elsewhere, don't buffer_error if we had some unmapped buffers
*/
if (all_mapped) {
+ char b[BDEVNAME_SIZE];
+
printk("__find_get_block_slow() failed. "
"block=%llu, b_blocknr=%llu\n",
(unsigned long long)block,
(unsigned long long)bh->b_blocknr);
printk("b_state=0x%08lx, b_size=%zu\n",
bh->b_state, bh->b_size);
- printk("device blocksize: %d\n", 1 << bd_inode->i_blkbits);
+ printk("device %s blocksize: %d\n", bdevname(bdev, b),
+ 1 << bd_inode->i_blkbits);
}
out_unlock:
spin_unlock(&bd_mapping->private_lock);
diff --git a/fs/compat.c b/fs/compat.c
index 302e761..c987875 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -546,7 +546,7 @@
ssize_t compat_rw_copy_check_uvector(int type,
const struct compat_iovec __user *uvector, unsigned long nr_segs,
unsigned long fast_segs, struct iovec *fast_pointer,
- struct iovec **ret_pointer)
+ struct iovec **ret_pointer, int check_access)
{
compat_ssize_t tot_len;
struct iovec *iov = *ret_pointer = fast_pointer;
@@ -593,7 +593,8 @@
}
if (len < 0) /* size_t not fitting in compat_ssize_t .. */
goto out;
- if (!access_ok(vrfy_dir(type), compat_ptr(buf), len)) {
+ if (check_access &&
+ !access_ok(vrfy_dir(type), compat_ptr(buf), len)) {
ret = -EFAULT;
goto out;
}
@@ -1107,7 +1108,7 @@
goto out;
tot_len = compat_rw_copy_check_uvector(type, uvector, nr_segs,
- UIO_FASTIOV, iovstack, &iov);
+ UIO_FASTIOV, iovstack, &iov, 1);
if (tot_len == 0) {
ret = 0;
goto out;
diff --git a/fs/ecryptfs/ecryptfs_kernel.h b/fs/ecryptfs/ecryptfs_kernel.h
index b36c557..54481a3 100644
--- a/fs/ecryptfs/ecryptfs_kernel.h
+++ b/fs/ecryptfs/ecryptfs_kernel.h
@@ -514,7 +514,7 @@
#define ecryptfs_printk(type, fmt, arg...) \
__ecryptfs_printk(type "%s: " fmt, __func__, ## arg);
-__attribute__ ((format(printf, 1, 2)))
+__printf(1, 2)
void __ecryptfs_printk(const char *fmt, ...);
extern const struct file_operations ecryptfs_main_fops;
diff --git a/fs/eventpoll.c b/fs/eventpoll.c
index 9026fc9..828e750 100644
--- a/fs/eventpoll.c
+++ b/fs/eventpoll.c
@@ -70,6 +70,15 @@
* simultaneous inserts (A into B and B into A) from racing and
* constructing a cycle without either insert observing that it is
* going to.
+ * It is necessary to acquire multiple "ep->mtx"es at once in the
+ * case when one epoll fd is added to another. In this case, we
+ * always acquire the locks in the order of nesting (i.e. after
+ * epoll_ctl(e1, EPOLL_CTL_ADD, e2), e1->mtx will always be acquired
+ * before e2->mtx). Since we disallow cycles of epoll file
+ * descriptors, this ensures that the mutexes are well-ordered. In
+ * order to communicate this nesting to lockdep, when walking a tree
+ * of epoll file descriptors, we use the current recursion depth as
+ * the lockdep subkey.
* It is possible to drop the "ep->mtx" and to use the global
* mutex "epmutex" (together with "ep->lock") to have it working,
* but having "ep->mtx" will make the interface more scalable.
@@ -464,13 +473,15 @@
* @ep: Pointer to the epoll private data structure.
* @sproc: Pointer to the scan callback.
* @priv: Private opaque data passed to the @sproc callback.
+ * @depth: The current depth of recursive f_op->poll calls.
*
* Returns: The same integer error code returned by the @sproc callback.
*/
static int ep_scan_ready_list(struct eventpoll *ep,
int (*sproc)(struct eventpoll *,
struct list_head *, void *),
- void *priv)
+ void *priv,
+ int depth)
{
int error, pwake = 0;
unsigned long flags;
@@ -481,7 +492,7 @@
* We need to lock this because we could be hit by
* eventpoll_release_file() and epoll_ctl().
*/
- mutex_lock(&ep->mtx);
+ mutex_lock_nested(&ep->mtx, depth);
/*
* Steal the ready list, and re-init the original one to the
@@ -670,7 +681,7 @@
static int ep_poll_readyevents_proc(void *priv, void *cookie, int call_nests)
{
- return ep_scan_ready_list(priv, ep_read_events_proc, NULL);
+ return ep_scan_ready_list(priv, ep_read_events_proc, NULL, call_nests + 1);
}
static unsigned int ep_eventpoll_poll(struct file *file, poll_table *wait)
@@ -737,7 +748,7 @@
ep = epi->ep;
list_del_init(&epi->fllink);
- mutex_lock(&ep->mtx);
+ mutex_lock_nested(&ep->mtx, 0);
ep_remove(ep, epi);
mutex_unlock(&ep->mtx);
}
@@ -1134,7 +1145,7 @@
esed.maxevents = maxevents;
esed.events = events;
- return ep_scan_ready_list(ep, ep_send_events_proc, &esed);
+ return ep_scan_ready_list(ep, ep_send_events_proc, &esed, 0);
}
static inline struct timespec ep_set_mstimeout(long ms)
@@ -1267,7 +1278,7 @@
struct rb_node *rbp;
struct epitem *epi;
- mutex_lock(&ep->mtx);
+ mutex_lock_nested(&ep->mtx, call_nests + 1);
for (rbp = rb_first(&ep->rbr); rbp; rbp = rb_next(rbp)) {
epi = rb_entry(rbp, struct epitem, rbn);
if (unlikely(is_file_epoll(epi->ffd.file))) {
@@ -1409,7 +1420,7 @@
}
- mutex_lock(&ep->mtx);
+ mutex_lock_nested(&ep->mtx, 0);
/*
* Try to lookup the file inside our RB tree, Since we grabbed "mtx"
diff --git a/fs/exec.c b/fs/exec.c
index 25dcbe5..3625464 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -841,10 +841,6 @@
tsk->mm = mm;
tsk->active_mm = mm;
activate_mm(active_mm, mm);
- if (old_mm && tsk->signal->oom_score_adj == OOM_SCORE_ADJ_MIN) {
- atomic_dec(&old_mm->oom_disable_count);
- atomic_inc(&tsk->mm->oom_disable_count);
- }
task_unlock(tsk);
arch_pick_mmap_layout(mm);
if (old_mm) {
diff --git a/fs/ext2/ext2.h b/fs/ext2/ext2.h
index af9fc89..9a4e5e2 100644
--- a/fs/ext2/ext2.h
+++ b/fs/ext2/ext2.h
@@ -135,10 +135,10 @@
struct dentry *ext2_get_parent(struct dentry *child);
/* super.c */
-extern void ext2_error (struct super_block *, const char *, const char *, ...)
- __attribute__ ((format (printf, 3, 4)));
-extern void ext2_msg(struct super_block *, const char *, const char *, ...)
- __attribute__ ((format (printf, 3, 4)));
+extern __printf(3, 4)
+void ext2_error(struct super_block *, const char *, const char *, ...);
+extern __printf(3, 4)
+void ext2_msg(struct super_block *, const char *, const char *, ...);
extern void ext2_update_dynamic_rev (struct super_block *sb);
extern void ext2_write_super (struct super_block *);
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index b7d7bd0..cec3145 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1878,40 +1878,40 @@
extern void *ext4_kvmalloc(size_t size, gfp_t flags);
extern void *ext4_kvzalloc(size_t size, gfp_t flags);
extern void ext4_kvfree(void *ptr);
-extern void __ext4_error(struct super_block *, const char *, unsigned int,
- const char *, ...)
- __attribute__ ((format (printf, 4, 5)));
+extern __printf(4, 5)
+void __ext4_error(struct super_block *, const char *, unsigned int,
+ const char *, ...);
#define ext4_error(sb, message...) __ext4_error(sb, __func__, \
__LINE__, ## message)
-extern void ext4_error_inode(struct inode *, const char *, unsigned int,
- ext4_fsblk_t, const char *, ...)
- __attribute__ ((format (printf, 5, 6)));
-extern void ext4_error_file(struct file *, const char *, unsigned int,
- ext4_fsblk_t, const char *, ...)
- __attribute__ ((format (printf, 5, 6)));
+extern __printf(5, 6)
+void ext4_error_inode(struct inode *, const char *, unsigned int, ext4_fsblk_t,
+ const char *, ...);
+extern __printf(5, 6)
+void ext4_error_file(struct file *, const char *, unsigned int, ext4_fsblk_t,
+ const char *, ...);
extern void __ext4_std_error(struct super_block *, const char *,
unsigned int, int);
-extern void __ext4_abort(struct super_block *, const char *, unsigned int,
- const char *, ...)
- __attribute__ ((format (printf, 4, 5)));
+extern __printf(4, 5)
+void __ext4_abort(struct super_block *, const char *, unsigned int,
+ const char *, ...);
#define ext4_abort(sb, message...) __ext4_abort(sb, __func__, \
__LINE__, ## message)
-extern void __ext4_warning(struct super_block *, const char *, unsigned int,
- const char *, ...)
- __attribute__ ((format (printf, 4, 5)));
+extern __printf(4, 5)
+void __ext4_warning(struct super_block *, const char *, unsigned int,
+ const char *, ...);
#define ext4_warning(sb, message...) __ext4_warning(sb, __func__, \
__LINE__, ## message)
-extern void ext4_msg(struct super_block *, const char *, const char *, ...)
- __attribute__ ((format (printf, 3, 4)));
+extern __printf(3, 4)
+void ext4_msg(struct super_block *, const char *, const char *, ...);
extern void __dump_mmp_msg(struct super_block *, struct mmp_struct *mmp,
const char *, unsigned int, const char *);
#define dump_mmp_msg(sb, mmp, msg) __dump_mmp_msg(sb, mmp, __func__, \
__LINE__, msg)
-extern void __ext4_grp_locked_error(const char *, unsigned int, \
- struct super_block *, ext4_group_t, \
- unsigned long, ext4_fsblk_t, \
- const char *, ...)
- __attribute__ ((format (printf, 7, 8)));
+extern __printf(7, 8)
+void __ext4_grp_locked_error(const char *, unsigned int,
+ struct super_block *, ext4_group_t,
+ unsigned long, ext4_fsblk_t,
+ const char *, ...);
#define ext4_grp_locked_error(sb, grp, message...) \
__ext4_grp_locked_error(__func__, __LINE__, (sb), (grp), ## message)
extern void ext4_update_dynamic_rev(struct super_block *sb);
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 986e238..0defe0b 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -1811,8 +1811,12 @@
* We don't want to do block allocation, so redirty
* the page and return. We may reach here when we do
* a journal commit via journal_submit_inode_data_buffers.
- * We can also reach here via shrink_page_list
+ * We can also reach here via shrink_page_list but it
+ * should never be for direct reclaim so warn if that
+ * happens
*/
+ WARN_ON_ONCE((current->flags & (PF_MEMALLOC|PF_KSWAPD)) ==
+ PF_MEMALLOC);
goto redirty_page;
}
if (commit_write)
diff --git a/fs/fat/dir.c b/fs/fat/dir.c
index 5efbd5d..aca191b 100644
--- a/fs/fat/dir.c
+++ b/fs/fat/dir.c
@@ -156,8 +156,8 @@
} else {
if (uni_xlate == 1) {
*op++ = ':';
- op = pack_hex_byte(op, ec >> 8);
- op = pack_hex_byte(op, ec);
+ op = hex_byte_pack(op, ec >> 8);
+ op = hex_byte_pack(op, ec);
len -= 5;
} else {
*op++ = '?';
diff --git a/fs/fat/fat.h b/fs/fat/fat.h
index a5d3853..1510a4d 100644
--- a/fs/fat/fat.h
+++ b/fs/fat/fat.h
@@ -326,15 +326,14 @@
extern int fat_flush_inodes(struct super_block *sb, struct inode *i1,
struct inode *i2);
/* fat/misc.c */
-extern void
-__fat_fs_error(struct super_block *sb, int report, const char *fmt, ...)
- __attribute__ ((format (printf, 3, 4))) __cold;
+extern __printf(3, 4) __cold
+void __fat_fs_error(struct super_block *sb, int report, const char *fmt, ...);
#define fat_fs_error(sb, fmt, args...) \
__fat_fs_error(sb, 1, fmt , ## args)
#define fat_fs_error_ratelimit(sb, fmt, args...) \
__fat_fs_error(sb, __ratelimit(&MSDOS_SB(sb)->ratelimit), fmt , ## args)
-void fat_msg(struct super_block *sb, const char *level, const char *fmt, ...)
- __attribute__ ((format (printf, 3, 4))) __cold;
+__printf(3, 4) __cold
+void fat_msg(struct super_block *sb, const char *level, const char *fmt, ...);
extern int fat_clusters_flush(struct super_block *sb);
extern int fat_chain_add(struct inode *inode, int new_dclus, int nr_cluster);
extern void fat_time_fat2unix(struct msdos_sb_info *sbi, struct timespec *ts,
diff --git a/fs/gfs2/glock.h b/fs/gfs2/glock.h
index 6670711..2553b85 100644
--- a/fs/gfs2/glock.h
+++ b/fs/gfs2/glock.h
@@ -201,7 +201,7 @@
void gfs2_glock_dq_m(unsigned int num_gh, struct gfs2_holder *ghs);
void gfs2_glock_dq_uninit_m(unsigned int num_gh, struct gfs2_holder *ghs);
-__attribute__ ((format(printf, 2, 3)))
+__printf(2, 3)
void gfs2_print_dbg(struct seq_file *seq, const char *fmt, ...);
/**
diff --git a/fs/hpfs/hpfs_fn.h b/fs/hpfs/hpfs_fn.h
index 331b5e2..de94617 100644
--- a/fs/hpfs/hpfs_fn.h
+++ b/fs/hpfs/hpfs_fn.h
@@ -311,8 +311,8 @@
/* super.c */
-void hpfs_error(struct super_block *, const char *, ...)
- __attribute__((format (printf, 2, 3)));
+__printf(2, 3)
+void hpfs_error(struct super_block *, const char *, ...);
int hpfs_stop_cycles(struct super_block *, int, int *, int *, char *);
unsigned hpfs_count_one_bitmap(struct super_block *, secno);
diff --git a/fs/logfs/logfs.h b/fs/logfs/logfs.h
index f22d108..398ecff 100644
--- a/fs/logfs/logfs.h
+++ b/fs/logfs/logfs.h
@@ -618,7 +618,6 @@
struct page *emergency_read_begin(struct address_space *mapping, pgoff_t index);
void emergency_read_end(struct page *page);
void logfs_crash_dump(struct super_block *sb);
-void *memchr_inv(const void *s, int c, size_t n);
int logfs_statfs(struct dentry *dentry, struct kstatfs *stats);
int logfs_check_ds(struct logfs_disk_super *ds);
int logfs_write_sb(struct super_block *sb);
diff --git a/fs/logfs/super.c b/fs/logfs/super.c
index ce03a18..f2697e4 100644
--- a/fs/logfs/super.c
+++ b/fs/logfs/super.c
@@ -91,28 +91,6 @@
}
/*
- * TODO: move to lib/string.c
- */
-/**
- * memchr_inv - Find a character in an area of memory.
- * @s: The memory area
- * @c: The byte to search for
- * @n: The size of the area.
- *
- * returns the address of the first character other than @c, or %NULL
- * if the whole buffer contains just @c.
- */
-void *memchr_inv(const void *s, int c, size_t n)
-{
- const unsigned char *p = s;
- while (n-- != 0)
- if ((unsigned char)c != *p++)
- return (void *)(p - 1);
-
- return NULL;
-}
-
-/*
* FIXME: There should be a reserve for root, similar to ext2.
*/
int logfs_statfs(struct dentry *dentry, struct kstatfs *stats)
diff --git a/fs/nilfs2/nilfs.h b/fs/nilfs2/nilfs.h
index 255d5e1..3777d13 100644
--- a/fs/nilfs2/nilfs.h
+++ b/fs/nilfs2/nilfs.h
@@ -276,10 +276,10 @@
/* super.c */
extern struct inode *nilfs_alloc_inode(struct super_block *);
extern void nilfs_destroy_inode(struct inode *);
-extern void nilfs_error(struct super_block *, const char *, const char *, ...)
- __attribute__ ((format (printf, 3, 4)));
-extern void nilfs_warning(struct super_block *, const char *, const char *, ...)
- __attribute__ ((format (printf, 3, 4)));
+extern __printf(3, 4)
+void nilfs_error(struct super_block *, const char *, const char *, ...);
+extern __printf(3, 4)
+void nilfs_warning(struct super_block *, const char *, const char *, ...);
extern struct nilfs_super_block *
nilfs_read_super_block(struct super_block *, u64, int, struct buffer_head **);
extern int nilfs_store_magic_and_option(struct super_block *,
diff --git a/fs/ntfs/debug.h b/fs/ntfs/debug.h
index 2142b1c..53c27ea 100644
--- a/fs/ntfs/debug.h
+++ b/fs/ntfs/debug.h
@@ -30,8 +30,9 @@
extern int debug_msgs;
-extern void __ntfs_debug(const char *file, int line, const char *function,
- const char *format, ...) __attribute__ ((format (printf, 4, 5)));
+extern __printf(4, 5)
+void __ntfs_debug(const char *file, int line, const char *function,
+ const char *format, ...);
/**
* ntfs_debug - write a debug level message to syslog
* @f: a printf format string containing the message
@@ -52,12 +53,14 @@
#endif /* !DEBUG */
-extern void __ntfs_warning(const char *function, const struct super_block *sb,
- const char *fmt, ...) __attribute__ ((format (printf, 3, 4)));
+extern __printf(3, 4)
+void __ntfs_warning(const char *function, const struct super_block *sb,
+ const char *fmt, ...);
#define ntfs_warning(sb, f, a...) __ntfs_warning(__func__, sb, f, ##a)
-extern void __ntfs_error(const char *function, const struct super_block *sb,
- const char *fmt, ...) __attribute__ ((format (printf, 3, 4)));
+extern __printf(3, 4)
+void __ntfs_error(const char *function, const struct super_block *sb,
+ const char *fmt, ...);
#define ntfs_error(sb, f, a...) __ntfs_error(__func__, sb, f, ##a)
#endif /* _LINUX_NTFS_DEBUG_H */
diff --git a/fs/ocfs2/super.h b/fs/ocfs2/super.h
index 40c7de0..74ff74c 100644
--- a/fs/ocfs2/super.h
+++ b/fs/ocfs2/super.h
@@ -31,17 +31,15 @@
int ocfs2_publish_get_mount_state(struct ocfs2_super *osb,
int node_num);
-void __ocfs2_error(struct super_block *sb,
- const char *function,
- const char *fmt, ...)
- __attribute__ ((format (printf, 3, 4)));
+__printf(3, 4)
+void __ocfs2_error(struct super_block *sb, const char *function,
+ const char *fmt, ...);
#define ocfs2_error(sb, fmt, args...) __ocfs2_error(sb, __PRETTY_FUNCTION__, fmt, ##args)
-void __ocfs2_abort(struct super_block *sb,
- const char *function,
- const char *fmt, ...)
- __attribute__ ((format (printf, 3, 4)));
+__printf(3, 4)
+void __ocfs2_abort(struct super_block *sb, const char *function,
+ const char *fmt, ...);
#define ocfs2_abort(sb, fmt, args...) __ocfs2_abort(sb, __PRETTY_FUNCTION__, fmt, ##args)
diff --git a/fs/partitions/ldm.c b/fs/partitions/ldm.c
index af9fdf0..bd8ae78 100644
--- a/fs/partitions/ldm.c
+++ b/fs/partitions/ldm.c
@@ -49,18 +49,20 @@
#define ldm_error(f, a...) _ldm_printk (KERN_ERR, __func__, f, ##a)
#define ldm_info(f, a...) _ldm_printk (KERN_INFO, __func__, f, ##a)
-__attribute__ ((format (printf, 3, 4)))
-static void _ldm_printk (const char *level, const char *function,
- const char *fmt, ...)
+static __printf(3, 4)
+void _ldm_printk(const char *level, const char *function, const char *fmt, ...)
{
- static char buf[128];
+ struct va_format vaf;
va_list args;
va_start (args, fmt);
- vsnprintf (buf, sizeof (buf), fmt, args);
- va_end (args);
- printk ("%s%s(): %s\n", level, function, buf);
+ vaf.fmt = fmt;
+ vaf.va = &args;
+
+ printk("%s%s(): %pV\n", level, function, &vaf);
+
+ va_end(args);
}
/**
diff --git a/fs/pipe.c b/fs/pipe.c
index 0e0be1d..4065f07 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -1254,6 +1254,7 @@
static const struct super_operations pipefs_ops = {
.destroy_inode = free_inode_nonrcu,
+ .statfs = simple_statfs,
};
/*
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 5eb0206..8f0087e 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -1107,13 +1107,6 @@
goto err_sighand;
}
- if (oom_adjust != task->signal->oom_adj) {
- if (oom_adjust == OOM_DISABLE)
- atomic_inc(&task->mm->oom_disable_count);
- if (task->signal->oom_adj == OOM_DISABLE)
- atomic_dec(&task->mm->oom_disable_count);
- }
-
/*
* Warn that /proc/pid/oom_adj is deprecated, see
* Documentation/feature-removal-schedule.txt.
@@ -1215,12 +1208,6 @@
goto err_sighand;
}
- if (oom_score_adj != task->signal->oom_score_adj) {
- if (oom_score_adj == OOM_SCORE_ADJ_MIN)
- atomic_inc(&task->mm->oom_disable_count);
- if (task->signal->oom_score_adj == OOM_SCORE_ADJ_MIN)
- atomic_dec(&task->mm->oom_disable_count);
- }
task->signal->oom_score_adj = oom_score_adj;
if (has_capability_noaudit(current, CAP_SYS_RESOURCE))
task->signal->oom_score_adj_min = oom_score_adj;
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 5afaa58..e418c5a 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -44,6 +44,7 @@
"VmPeak:\t%8lu kB\n"
"VmSize:\t%8lu kB\n"
"VmLck:\t%8lu kB\n"
+ "VmPin:\t%8lu kB\n"
"VmHWM:\t%8lu kB\n"
"VmRSS:\t%8lu kB\n"
"VmData:\t%8lu kB\n"
@@ -55,6 +56,7 @@
hiwater_vm << (PAGE_SHIFT-10),
(total_vm - mm->reserved_vm) << (PAGE_SHIFT-10),
mm->locked_vm << (PAGE_SHIFT-10),
+ mm->pinned_vm << (PAGE_SHIFT-10),
hiwater_rss << (PAGE_SHIFT-10),
total_rss << (PAGE_SHIFT-10),
data << (PAGE_SHIFT-10),
@@ -1039,6 +1041,9 @@
seq_printf(m, " stack");
}
+ if (is_vm_hugetlb_page(vma))
+ seq_printf(m, " huge");
+
walk_page_range(vma->vm_start, vma->vm_end, &walk);
if (!md->pages)
diff --git a/fs/read_write.c b/fs/read_write.c
index dfd1257..5ad4248 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -633,7 +633,8 @@
ssize_t rw_copy_check_uvector(int type, const struct iovec __user * uvector,
unsigned long nr_segs, unsigned long fast_segs,
struct iovec *fast_pointer,
- struct iovec **ret_pointer)
+ struct iovec **ret_pointer,
+ int check_access)
{
unsigned long seg;
ssize_t ret;
@@ -689,7 +690,8 @@
ret = -EINVAL;
goto out;
}
- if (unlikely(!access_ok(vrfy_dir(type), buf, len))) {
+ if (check_access
+ && unlikely(!access_ok(vrfy_dir(type), buf, len))) {
ret = -EFAULT;
goto out;
}
@@ -721,7 +723,7 @@
}
ret = rw_copy_check_uvector(type, uvector, nr_segs,
- ARRAY_SIZE(iovstack), iovstack, &iov);
+ ARRAY_SIZE(iovstack), iovstack, &iov, 1);
if (ret <= 0)
goto out;
diff --git a/fs/super.c b/fs/super.c
index 3f56a26..32a81f3 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -61,7 +61,7 @@
return -1;
if (!grab_super_passive(sb))
- return -1;
+ return !sc->nr_to_scan ? 0 : -1;
if (sb->s_op && sb->s_op->nr_cached_objects)
fs_objects = sb->s_op->nr_cached_objects(sb);
diff --git a/fs/udf/udfdecl.h b/fs/udf/udfdecl.h
index dbd52d4b..dc8a8dc 100644
--- a/fs/udf/udfdecl.h
+++ b/fs/udf/udfdecl.h
@@ -112,8 +112,8 @@
/* super.c */
-__attribute__((format(printf, 3, 4)))
-extern void udf_warning(struct super_block *, const char *, const char *, ...);
+extern __printf(3, 4) void udf_warning(struct super_block *, const char *,
+ const char *, ...);
static inline void udf_updated_lvid(struct super_block *sb)
{
struct buffer_head *bh = UDF_SB(sb)->s_lvid_bh;
diff --git a/fs/ufs/ufs.h b/fs/ufs/ufs.h
index 5be2755..c26f2bc 100644
--- a/fs/ufs/ufs.h
+++ b/fs/ufs/ufs.h
@@ -117,9 +117,12 @@
extern const struct file_operations ufs_dir_operations;
/* super.c */
-extern void ufs_warning (struct super_block *, const char *, const char *, ...) __attribute__ ((format (printf, 3, 4)));
-extern void ufs_error (struct super_block *, const char *, const char *, ...) __attribute__ ((format (printf, 3, 4)));
-extern void ufs_panic (struct super_block *, const char *, const char *, ...) __attribute__ ((format (printf, 3, 4)));
+extern __printf(3, 4)
+void ufs_warning(struct super_block *, const char *, const char *, ...);
+extern __printf(3, 4)
+void ufs_error(struct super_block *, const char *, const char *, ...);
+extern __printf(3, 4)
+void ufs_panic(struct super_block *, const char *, const char *, ...);
/* symlink.c */
extern const struct inode_operations ufs_fast_symlink_inode_operations;
diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c
index 11b2aad..33b1331 100644
--- a/fs/xfs/xfs_aops.c
+++ b/fs/xfs/xfs_aops.c
@@ -902,11 +902,11 @@
* random callers for direct reclaim or memcg reclaim. We explicitly
* allow reclaim from kswapd as the stack usage there is relatively low.
*
- * This should really be done by the core VM, but until that happens
- * filesystems like XFS, btrfs and ext4 have to take care of this
- * by themselves.
+ * This should never happen except in the case of a VM regression so
+ * warn about it.
*/
- if ((current->flags & (PF_MEMALLOC|PF_KSWAPD)) == PF_MEMALLOC)
+ if (WARN_ON_ONCE((current->flags & (PF_MEMALLOC|PF_KSWAPD)) ==
+ PF_MEMALLOC))
goto redirty;
/*
diff --git a/fs/xfs/xfs_message.h b/fs/xfs/xfs_message.h
index 7fb7ea0..56dc0c1 100644
--- a/fs/xfs/xfs_message.h
+++ b/fs/xfs/xfs_message.h
@@ -3,31 +3,29 @@
struct xfs_mount;
-extern void xfs_emerg(const struct xfs_mount *mp, const char *fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
-extern void xfs_alert(const struct xfs_mount *mp, const char *fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
-extern void xfs_alert_tag(const struct xfs_mount *mp, int tag,
- const char *fmt, ...)
- __attribute__ ((format (printf, 3, 4)));
-extern void xfs_crit(const struct xfs_mount *mp, const char *fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
-extern void xfs_err(const struct xfs_mount *mp, const char *fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
-extern void xfs_warn(const struct xfs_mount *mp, const char *fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
-extern void xfs_notice(const struct xfs_mount *mp, const char *fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
-extern void xfs_info(const struct xfs_mount *mp, const char *fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
+extern __printf(2, 3)
+void xfs_emerg(const struct xfs_mount *mp, const char *fmt, ...);
+extern __printf(2, 3)
+void xfs_alert(const struct xfs_mount *mp, const char *fmt, ...);
+extern __printf(3, 4)
+void xfs_alert_tag(const struct xfs_mount *mp, int tag, const char *fmt, ...);
+extern __printf(2, 3)
+void xfs_crit(const struct xfs_mount *mp, const char *fmt, ...);
+extern __printf(2, 3)
+void xfs_err(const struct xfs_mount *mp, const char *fmt, ...);
+extern __printf(2, 3)
+void xfs_warn(const struct xfs_mount *mp, const char *fmt, ...);
+extern __printf(2, 3)
+void xfs_notice(const struct xfs_mount *mp, const char *fmt, ...);
+extern __printf(2, 3)
+void xfs_info(const struct xfs_mount *mp, const char *fmt, ...);
#ifdef DEBUG
-extern void xfs_debug(const struct xfs_mount *mp, const char *fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
+extern __printf(2, 3)
+void xfs_debug(const struct xfs_mount *mp, const char *fmt, ...);
#else
-static inline void
-__attribute__ ((format (printf, 2, 3)))
-xfs_debug(const struct xfs_mount *mp, const char *fmt, ...)
+static inline __printf(2, 3)
+void xfs_debug(const struct xfs_mount *mp, const char *fmt, ...)
{
}
#endif
diff --git a/include/asm-generic/bug.h b/include/asm-generic/bug.h
index dfb0ec6..84458b0 100644
--- a/include/asm-generic/bug.h
+++ b/include/asm-generic/bug.h
@@ -61,11 +61,12 @@
*/
#ifndef __WARN_TAINT
#ifndef __ASSEMBLY__
-extern void warn_slowpath_fmt(const char *file, const int line,
- const char *fmt, ...) __attribute__((format(printf, 3, 4)));
-extern void warn_slowpath_fmt_taint(const char *file, const int line,
- unsigned taint, const char *fmt, ...)
- __attribute__((format(printf, 4, 5)));
+extern __printf(3, 4)
+void warn_slowpath_fmt(const char *file, const int line,
+ const char *fmt, ...);
+extern __printf(4, 5)
+void warn_slowpath_fmt_taint(const char *file, const int line, unsigned taint,
+ const char *fmt, ...);
extern void warn_slowpath_null(const char *file, const int line);
#define WANT_WARN_ON_SLOWPATH
#endif
diff --git a/include/asm-generic/dma-mapping-common.h b/include/asm-generic/dma-mapping-common.h
index 0c80bb3..9fa3f96 100644
--- a/include/asm-generic/dma-mapping-common.h
+++ b/include/asm-generic/dma-mapping-common.h
@@ -123,7 +123,12 @@
size_t size,
enum dma_data_direction dir)
{
- dma_sync_single_for_cpu(dev, addr + offset, size, dir);
+ const struct dma_map_ops *ops = get_dma_ops(dev);
+
+ BUG_ON(!valid_dma_direction(dir));
+ if (ops->sync_single_for_cpu)
+ ops->sync_single_for_cpu(dev, addr + offset, size, dir);
+ debug_dma_sync_single_range_for_cpu(dev, addr, offset, size, dir);
}
static inline void dma_sync_single_range_for_device(struct device *dev,
@@ -132,7 +137,12 @@
size_t size,
enum dma_data_direction dir)
{
- dma_sync_single_for_device(dev, addr + offset, size, dir);
+ const struct dma_map_ops *ops = get_dma_ops(dev);
+
+ BUG_ON(!valid_dma_direction(dir));
+ if (ops->sync_single_for_device)
+ ops->sync_single_for_device(dev, addr + offset, size, dir);
+ debug_dma_sync_single_range_for_device(dev, addr, offset, size, dir);
}
static inline void
diff --git a/include/asm-generic/page.h b/include/asm-generic/page.h
index 75fec18..351889d 100644
--- a/include/asm-generic/page.h
+++ b/include/asm-generic/page.h
@@ -79,8 +79,8 @@
#define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT)
#define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT)
-#define virt_to_page(addr) (mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT))
-#define page_to_virt(page) ((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET)
+#define virt_to_page(addr) pfn_to_page(virt_to_pfn(addr))
+#define page_to_virt(page) pfn_to_virt(page_to_pfn(page))
#ifndef page_to_phys
#define page_to_phys(page) ((dma_addr_t)page_to_pfn(page) << PAGE_SHIFT)
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 43538b6..cf3b446 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -122,12 +122,12 @@
* using the DRM_DEBUG_KMS and DRM_DEBUG.
*/
-extern __attribute__((format (printf, 4, 5)))
+extern __printf(4, 5)
void drm_ut_debug_printk(unsigned int request_level,
- const char *prefix,
- const char *function_name,
- const char *format, ...);
-extern __attribute__((format (printf, 2, 3)))
+ const char *prefix,
+ const char *function_name,
+ const char *format, ...);
+extern __printf(2, 3)
int drm_err(const char *func, const char *format, ...);
/***********************************************************************/
diff --git a/include/linux/audit.h b/include/linux/audit.h
index 0c80061..2f81c6f 100644
--- a/include/linux/audit.h
+++ b/include/linux/audit.h
@@ -584,14 +584,13 @@
#ifdef CONFIG_AUDIT
/* These are defined in audit.c */
/* Public API */
-extern void audit_log(struct audit_context *ctx, gfp_t gfp_mask,
- int type, const char *fmt, ...)
- __attribute__((format(printf,4,5)));
+extern __printf(4, 5)
+void audit_log(struct audit_context *ctx, gfp_t gfp_mask, int type,
+ const char *fmt, ...);
extern struct audit_buffer *audit_log_start(struct audit_context *ctx, gfp_t gfp_mask, int type);
-extern void audit_log_format(struct audit_buffer *ab,
- const char *fmt, ...)
- __attribute__((format(printf,2,3)));
+extern __printf(2, 3)
+void audit_log_format(struct audit_buffer *ab, const char *fmt, ...);
extern void audit_log_end(struct audit_buffer *ab);
extern int audit_string_contains_control(const char *string,
size_t len);
diff --git a/include/linux/blktrace_api.h b/include/linux/blktrace_api.h
index 8e9e4bc..4d1a074 100644
--- a/include/linux/blktrace_api.h
+++ b/include/linux/blktrace_api.h
@@ -170,7 +170,7 @@
extern int do_blk_trace_setup(struct request_queue *q, char *name,
dev_t dev, struct block_device *bdev,
struct blk_user_trace_setup *buts);
-extern __attribute__((format(printf, 2, 3)))
+extern __printf(2, 3)
void __trace_note_message(struct blk_trace *, const char *fmt, ...);
/**
diff --git a/include/linux/compaction.h b/include/linux/compaction.h
index cc9f7a4..bb2bbdb 100644
--- a/include/linux/compaction.h
+++ b/include/linux/compaction.h
@@ -24,8 +24,6 @@
int order, gfp_t gfp_mask, nodemask_t *mask,
bool sync);
extern unsigned long compaction_suitable(struct zone *zone, int order);
-extern unsigned long compact_zone_order(struct zone *zone, int order,
- gfp_t gfp_mask, bool sync);
/* Do not skip compaction more than 64 times */
#define COMPACT_MAX_DEFER_SHIFT 6
@@ -69,12 +67,6 @@
return COMPACT_SKIPPED;
}
-static inline unsigned long compact_zone_order(struct zone *zone, int order,
- gfp_t gfp_mask, bool sync)
-{
- return COMPACT_CONTINUE;
-}
-
static inline void defer_compaction(struct zone *zone)
{
}
diff --git a/include/linux/compat.h b/include/linux/compat.h
index c6e7523..154bf56 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -547,7 +547,8 @@
const struct compat_iovec __user *uvector,
unsigned long nr_segs,
unsigned long fast_segs, struct iovec *fast_pointer,
- struct iovec **ret_pointer);
+ struct iovec **ret_pointer,
+ int check_access);
extern void __user *compat_alloc_user_space(unsigned long len);
diff --git a/include/linux/device.h b/include/linux/device.h
index 85e78fc..e88abee 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -622,8 +622,8 @@
return kobject_name(&dev->kobj);
}
-extern int dev_set_name(struct device *dev, const char *name, ...)
- __attribute__((format(printf, 2, 3)));
+extern __printf(2, 3)
+int dev_set_name(struct device *dev, const char *name, ...);
#ifdef CONFIG_NUMA
static inline int dev_to_node(struct device *dev)
@@ -753,10 +753,10 @@
void *drvdata,
const char *fmt,
va_list vargs);
-extern struct device *device_create(struct class *cls, struct device *parent,
- dev_t devt, void *drvdata,
- const char *fmt, ...)
- __attribute__((format(printf, 5, 6)));
+extern __printf(5, 6)
+struct device *device_create(struct class *cls, struct device *parent,
+ dev_t devt, void *drvdata,
+ const char *fmt, ...);
extern void device_destroy(struct class *cls, dev_t devt);
/*
@@ -800,64 +800,56 @@
extern int __dev_printk(const char *level, const struct device *dev,
struct va_format *vaf);
-extern int dev_printk(const char *level, const struct device *dev,
- const char *fmt, ...)
- __attribute__ ((format (printf, 3, 4)));
-extern int dev_emerg(const struct device *dev, const char *fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
-extern int dev_alert(const struct device *dev, const char *fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
-extern int dev_crit(const struct device *dev, const char *fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
-extern int dev_err(const struct device *dev, const char *fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
-extern int dev_warn(const struct device *dev, const char *fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
-extern int dev_notice(const struct device *dev, const char *fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
-extern int _dev_info(const struct device *dev, const char *fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
+extern __printf(3, 4)
+int dev_printk(const char *level, const struct device *dev,
+ const char *fmt, ...)
+ ;
+extern __printf(2, 3)
+int dev_emerg(const struct device *dev, const char *fmt, ...);
+extern __printf(2, 3)
+int dev_alert(const struct device *dev, const char *fmt, ...);
+extern __printf(2, 3)
+int dev_crit(const struct device *dev, const char *fmt, ...);
+extern __printf(2, 3)
+int dev_err(const struct device *dev, const char *fmt, ...);
+extern __printf(2, 3)
+int dev_warn(const struct device *dev, const char *fmt, ...);
+extern __printf(2, 3)
+int dev_notice(const struct device *dev, const char *fmt, ...);
+extern __printf(2, 3)
+int _dev_info(const struct device *dev, const char *fmt, ...);
#else
static inline int __dev_printk(const char *level, const struct device *dev,
struct va_format *vaf)
- { return 0; }
-static inline int dev_printk(const char *level, const struct device *dev,
- const char *fmt, ...)
- __attribute__ ((format (printf, 3, 4)));
-static inline int dev_printk(const char *level, const struct device *dev,
- const char *fmt, ...)
- { return 0; }
+{ return 0; }
+static inline __printf(3, 4)
+int dev_printk(const char *level, const struct device *dev,
+ const char *fmt, ...)
+{ return 0; }
-static inline int dev_emerg(const struct device *dev, const char *fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
-static inline int dev_emerg(const struct device *dev, const char *fmt, ...)
- { return 0; }
-static inline int dev_crit(const struct device *dev, const char *fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
-static inline int dev_crit(const struct device *dev, const char *fmt, ...)
- { return 0; }
-static inline int dev_alert(const struct device *dev, const char *fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
-static inline int dev_alert(const struct device *dev, const char *fmt, ...)
- { return 0; }
-static inline int dev_err(const struct device *dev, const char *fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
-static inline int dev_err(const struct device *dev, const char *fmt, ...)
- { return 0; }
-static inline int dev_warn(const struct device *dev, const char *fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
-static inline int dev_warn(const struct device *dev, const char *fmt, ...)
- { return 0; }
-static inline int dev_notice(const struct device *dev, const char *fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
-static inline int dev_notice(const struct device *dev, const char *fmt, ...)
- { return 0; }
-static inline int _dev_info(const struct device *dev, const char *fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
-static inline int _dev_info(const struct device *dev, const char *fmt, ...)
- { return 0; }
+static inline __printf(2, 3)
+int dev_emerg(const struct device *dev, const char *fmt, ...)
+{ return 0; }
+static inline __printf(2, 3)
+int dev_crit(const struct device *dev, const char *fmt, ...)
+{ return 0; }
+static inline __printf(2, 3)
+int dev_alert(const struct device *dev, const char *fmt, ...)
+{ return 0; }
+static inline __printf(2, 3)
+int dev_err(const struct device *dev, const char *fmt, ...)
+{ return 0; }
+static inline __printf(2, 3)
+int dev_warn(const struct device *dev, const char *fmt, ...)
+{ return 0; }
+static inline __printf(2, 3)
+int dev_notice(const struct device *dev, const char *fmt, ...)
+{ return 0; }
+static inline __printf(2, 3)
+int _dev_info(const struct device *dev, const char *fmt, ...)
+{ return 0; }
#endif
diff --git a/include/linux/dmar.h b/include/linux/dmar.h
index a8b1a84..731a609 100644
--- a/include/linux/dmar.h
+++ b/include/linux/dmar.h
@@ -26,6 +26,8 @@
#include <linux/msi.h>
#include <linux/irqreturn.h>
+struct acpi_dmar_header;
+
/* DMAR Flags */
#define DMAR_INTR_REMAP 0x1
#define DMAR_X2APIC_OPT_OUT 0x2
diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h
index 13aae80..0564e3c 100644
--- a/include/linux/dynamic_debug.h
+++ b/include/linux/dynamic_debug.h
@@ -37,22 +37,21 @@
#if defined(CONFIG_DYNAMIC_DEBUG)
extern int ddebug_remove_module(const char *mod_name);
-extern int __dynamic_pr_debug(struct _ddebug *descriptor, const char *fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
+extern __printf(2, 3)
+int __dynamic_pr_debug(struct _ddebug *descriptor, const char *fmt, ...);
struct device;
-extern int __dynamic_dev_dbg(struct _ddebug *descriptor,
- const struct device *dev,
- const char *fmt, ...)
- __attribute__ ((format (printf, 3, 4)));
+extern __printf(3, 4)
+int __dynamic_dev_dbg(struct _ddebug *descriptor, const struct device *dev,
+ const char *fmt, ...);
struct net_device;
-extern int __dynamic_netdev_dbg(struct _ddebug *descriptor,
- const struct net_device *dev,
- const char *fmt, ...)
- __attribute__ ((format (printf, 3, 4)));
+extern __printf(3, 4)
+int __dynamic_netdev_dbg(struct _ddebug *descriptor,
+ const struct net_device *dev,
+ const char *fmt, ...);
#define DEFINE_DYNAMIC_DEBUG_METADATA(name, fmt) \
static struct _ddebug __used __aligned(8) \
diff --git a/include/linux/ext3_fs.h b/include/linux/ext3_fs.h
index 67a803a..81965cc 100644
--- a/include/linux/ext3_fs.h
+++ b/include/linux/ext3_fs.h
@@ -937,15 +937,15 @@
ext3_fsblk_t n_blocks_count);
/* super.c */
-extern void ext3_error (struct super_block *, const char *, const char *, ...)
- __attribute__ ((format (printf, 3, 4)));
+extern __printf(3, 4)
+void ext3_error(struct super_block *, const char *, const char *, ...);
extern void __ext3_std_error (struct super_block *, const char *, int);
-extern void ext3_abort (struct super_block *, const char *, const char *, ...)
- __attribute__ ((format (printf, 3, 4)));
-extern void ext3_warning (struct super_block *, const char *, const char *, ...)
- __attribute__ ((format (printf, 3, 4)));
-extern void ext3_msg(struct super_block *, const char *, const char *, ...)
- __attribute__ ((format (printf, 3, 4)));
+extern __printf(3, 4)
+void ext3_abort(struct super_block *, const char *, const char *, ...);
+extern __printf(3, 4)
+void ext3_warning(struct super_block *, const char *, const char *, ...);
+extern __printf(3, 4)
+void ext3_msg(struct super_block *, const char *, const char *, ...);
extern void ext3_update_dynamic_rev (struct super_block *sb);
#define ext3_std_error(sb, errno) \
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 14493a2..7a049fd 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1633,9 +1633,10 @@
struct seq_file;
ssize_t rw_copy_check_uvector(int type, const struct iovec __user * uvector,
- unsigned long nr_segs, unsigned long fast_segs,
- struct iovec *fast_pointer,
- struct iovec **ret_pointer);
+ unsigned long nr_segs, unsigned long fast_segs,
+ struct iovec *fast_pointer,
+ struct iovec **ret_pointer,
+ int check_access);
extern ssize_t vfs_read(struct file *, char __user *, size_t, loff_t *);
extern ssize_t vfs_write(struct file *, const char __user *, size_t, loff_t *);
@@ -2634,8 +2635,8 @@
.llseek = generic_file_llseek, \
};
-static inline void __attribute__((format(printf, 1, 2)))
-__simple_attr_check_format(const char *fmt, ...)
+static inline __printf(1, 2)
+void __simple_attr_check_format(const char *fmt, ...)
{
/* don't do anything, just let the compiler check the arguments; */
}
diff --git a/include/linux/fscache-cache.h b/include/linux/fscache-cache.h
index af095b5..ce31408 100644
--- a/include/linux/fscache-cache.h
+++ b/include/linux/fscache-cache.h
@@ -492,10 +492,10 @@
/*
* out-of-line cache backend functions
*/
-extern void fscache_init_cache(struct fscache_cache *cache,
- const struct fscache_cache_ops *ops,
- const char *idfmt,
- ...) __attribute__ ((format (printf, 3, 4)));
+extern __printf(3, 4)
+void fscache_init_cache(struct fscache_cache *cache,
+ const struct fscache_cache_ops *ops,
+ const char *idfmt, ...);
extern int fscache_add_cache(struct fscache_cache *cache,
struct fscache_object *fsdef,
diff --git a/include/linux/gameport.h b/include/linux/gameport.h
index b65a6f4..069ee41 100644
--- a/include/linux/gameport.h
+++ b/include/linux/gameport.h
@@ -78,8 +78,8 @@
void gameport_unregister_port(struct gameport *gameport);
-void gameport_set_phys(struct gameport *gameport, const char *fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
+__printf(2, 3)
+void gameport_set_phys(struct gameport *gameport, const char *fmt, ...);
#else
@@ -93,8 +93,8 @@
return;
}
-static inline void gameport_set_phys(struct gameport *gameport,
- const char *fmt, ...)
+static inline __printf(2, 3)
+void gameport_set_phys(struct gameport *gameport, const char *fmt, ...)
{
return;
}
diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
index 48c32eb..a9ace9c 100644
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h
@@ -22,6 +22,11 @@
extern int mincore_huge_pmd(struct vm_area_struct *vma, pmd_t *pmd,
unsigned long addr, unsigned long end,
unsigned char *vec);
+extern int move_huge_pmd(struct vm_area_struct *vma,
+ struct vm_area_struct *new_vma,
+ unsigned long old_addr,
+ unsigned long new_addr, unsigned long old_end,
+ pmd_t *old_pmd, pmd_t *new_pmd);
extern int change_huge_pmd(struct vm_area_struct *vma, pmd_t *pmd,
unsigned long addr, pgprot_t newprot);
diff --git a/include/linux/kallsyms.h b/include/linux/kallsyms.h
index 0df513b..3875719 100644
--- a/include/linux/kallsyms.h
+++ b/include/linux/kallsyms.h
@@ -101,9 +101,8 @@
#endif /*CONFIG_KALLSYMS*/
/* This macro allows us to keep printk typechecking */
-static void __check_printsym_format(const char *fmt, ...)
-__attribute__((format(printf,1,2)));
-static inline void __check_printsym_format(const char *fmt, ...)
+static __printf(1, 2)
+void __check_printsym_format(const char *fmt, ...)
{
}
diff --git a/include/linux/kdb.h b/include/linux/kdb.h
index 529d9a0..0647258 100644
--- a/include/linux/kdb.h
+++ b/include/linux/kdb.h
@@ -114,12 +114,9 @@
} kdb_reason_t;
extern int kdb_trap_printk;
-extern int vkdb_printf(const char *fmt, va_list args)
- __attribute__ ((format (printf, 1, 0)));
-extern int kdb_printf(const char *, ...)
- __attribute__ ((format (printf, 1, 2)));
-typedef int (*kdb_printf_t)(const char *, ...)
- __attribute__ ((format (printf, 1, 2)));
+extern __printf(1, 0) int vkdb_printf(const char *fmt, va_list args);
+extern __printf(1, 2) int kdb_printf(const char *, ...);
+typedef __printf(1, 2) int (*kdb_printf_t)(const char *, ...);
extern void kdb_init(int level);
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 8eefcf7..4c0d3b2 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -287,6 +287,8 @@
return kstrtoint_from_user(s, count, base, res);
}
+/* Obsolete, do not use. Use kstrto<foo> instead */
+
extern unsigned long simple_strtoul(const char *,char **,unsigned int);
extern long simple_strtol(const char *,char **,unsigned int);
extern unsigned long long simple_strtoull(const char *,char **,unsigned int);
@@ -296,20 +298,20 @@
#define strict_strtoull kstrtoull
#define strict_strtoll kstrtoll
-extern int sprintf(char * buf, const char * fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
-extern int vsprintf(char *buf, const char *, va_list)
- __attribute__ ((format (printf, 2, 0)));
-extern int snprintf(char * buf, size_t size, const char * fmt, ...)
- __attribute__ ((format (printf, 3, 4)));
-extern int vsnprintf(char *buf, size_t size, const char *fmt, va_list args)
- __attribute__ ((format (printf, 3, 0)));
-extern int scnprintf(char * buf, size_t size, const char * fmt, ...)
- __attribute__ ((format (printf, 3, 4)));
-extern int vscnprintf(char *buf, size_t size, const char *fmt, va_list args)
- __attribute__ ((format (printf, 3, 0)));
-extern char *kasprintf(gfp_t gfp, const char *fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
+/* lib/printf utilities */
+
+extern __printf(2, 3) int sprintf(char *buf, const char * fmt, ...);
+extern __printf(2, 0) int vsprintf(char *buf, const char *, va_list);
+extern __printf(3, 4)
+int snprintf(char *buf, size_t size, const char *fmt, ...);
+extern __printf(3, 0)
+int vsnprintf(char *buf, size_t size, const char *fmt, va_list args);
+extern __printf(3, 4)
+int scnprintf(char *buf, size_t size, const char *fmt, ...);
+extern __printf(3, 0)
+int vscnprintf(char *buf, size_t size, const char *fmt, va_list args);
+extern __printf(2, 3)
+char *kasprintf(gfp_t gfp, const char *fmt, ...);
extern char *kvasprintf(gfp_t gfp, const char *fmt, va_list args);
extern int sscanf(const char *, const char *, ...)
@@ -374,13 +376,18 @@
#define hex_asc_lo(x) hex_asc[((x) & 0x0f)]
#define hex_asc_hi(x) hex_asc[((x) & 0xf0) >> 4]
-static inline char *pack_hex_byte(char *buf, u8 byte)
+static inline char *hex_byte_pack(char *buf, u8 byte)
{
*buf++ = hex_asc_hi(byte);
*buf++ = hex_asc_lo(byte);
return buf;
}
+static inline char * __deprecated pack_hex_byte(char *buf, u8 byte)
+{
+ return hex_byte_pack(buf, byte);
+}
+
extern int hex_to_bin(char ch);
extern int __must_check hex2bin(u8 *dst, const char *src, size_t count);
@@ -427,8 +434,8 @@
extern void tracing_stop(void);
extern void ftrace_off_permanent(void);
-static inline void __attribute__ ((format (printf, 1, 2)))
-____trace_printk_check_format(const char *fmt, ...)
+static inline __printf(1, 2)
+void ____trace_printk_check_format(const char *fmt, ...)
{
}
#define __trace_printk_check_format(fmt, args...) \
@@ -467,13 +474,11 @@
__trace_printk(_THIS_IP_, fmt, ##args); \
} while (0)
-extern int
-__trace_bprintk(unsigned long ip, const char *fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
+extern __printf(2, 3)
+int __trace_bprintk(unsigned long ip, const char *fmt, ...);
-extern int
-__trace_printk(unsigned long ip, const char *fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
+extern __printf(2, 3)
+int __trace_printk(unsigned long ip, const char *fmt, ...);
extern void trace_dump_stack(void);
@@ -502,8 +507,8 @@
extern void ftrace_dump(enum ftrace_dump_mode oops_dump_mode);
#else
-static inline int
-trace_printk(const char *fmt, ...) __attribute__ ((format (printf, 1, 2)));
+static inline __printf(1, 2)
+int trace_printk(const char *fmt, ...);
static inline void tracing_start(void) { }
static inline void tracing_stop(void) { }
diff --git a/include/linux/kexec.h b/include/linux/kexec.h
index fe45136..2fa0901 100644
--- a/include/linux/kexec.h
+++ b/include/linux/kexec.h
@@ -140,8 +140,8 @@
void crash_map_reserved_pages(void);
void crash_unmap_reserved_pages(void);
void arch_crash_save_vmcoreinfo(void);
-void vmcoreinfo_append_str(const char *fmt, ...)
- __attribute__ ((format (printf, 1, 2)));
+__printf(1, 2)
+void vmcoreinfo_append_str(const char *fmt, ...);
unsigned long paddr_vmcoreinfo_note(void);
#define VMCOREINFO_OSRELEASE(value) \
diff --git a/include/linux/kmod.h b/include/linux/kmod.h
index 0da38cf..b16f653 100644
--- a/include/linux/kmod.h
+++ b/include/linux/kmod.h
@@ -32,8 +32,8 @@
extern char modprobe_path[]; /* for sysctl */
/* modprobe exit status on success, -ve on error. Return value
* usually useless though. */
-extern int __request_module(bool wait, const char *name, ...) \
- __attribute__((format(printf, 2, 3)));
+extern __printf(2, 3)
+int __request_module(bool wait, const char *name, ...);
#define request_module(mod...) __request_module(true, mod)
#define request_module_nowait(mod...) __request_module(false, mod)
#define try_then_request_module(x, mod...) \
diff --git a/include/linux/kobject.h b/include/linux/kobject.h
index 668729c..ad81e1c 100644
--- a/include/linux/kobject.h
+++ b/include/linux/kobject.h
@@ -72,8 +72,8 @@
unsigned int uevent_suppress:1;
};
-extern int kobject_set_name(struct kobject *kobj, const char *name, ...)
- __attribute__((format(printf, 2, 3)));
+extern __printf(2, 3)
+int kobject_set_name(struct kobject *kobj, const char *name, ...);
extern int kobject_set_name_vargs(struct kobject *kobj, const char *fmt,
va_list vargs);
@@ -83,15 +83,13 @@
}
extern void kobject_init(struct kobject *kobj, struct kobj_type *ktype);
-extern int __must_check kobject_add(struct kobject *kobj,
- struct kobject *parent,
- const char *fmt, ...)
- __attribute__((format(printf, 3, 4)));
-extern int __must_check kobject_init_and_add(struct kobject *kobj,
- struct kobj_type *ktype,
- struct kobject *parent,
- const char *fmt, ...)
- __attribute__((format(printf, 4, 5)));
+extern __printf(3, 4) __must_check
+int kobject_add(struct kobject *kobj, struct kobject *parent,
+ const char *fmt, ...);
+extern __printf(4, 5) __must_check
+int kobject_init_and_add(struct kobject *kobj,
+ struct kobj_type *ktype, struct kobject *parent,
+ const char *fmt, ...);
extern void kobject_del(struct kobject *kobj);
@@ -212,8 +210,8 @@
int kobject_uevent_env(struct kobject *kobj, enum kobject_action action,
char *envp[]);
-int add_uevent_var(struct kobj_uevent_env *env, const char *format, ...)
- __attribute__((format (printf, 2, 3)));
+__printf(2, 3)
+int add_uevent_var(struct kobj_uevent_env *env, const char *format, ...);
int kobject_action_type(const char *buf, size_t count,
enum kobject_action *type);
@@ -226,7 +224,7 @@
char *envp[])
{ return 0; }
-static inline __attribute__((format(printf, 2, 3)))
+static inline __printf(2, 3)
int add_uevent_var(struct kobj_uevent_env *env, const char *format, ...)
{ return 0; }
diff --git a/include/linux/kthread.h b/include/linux/kthread.h
index 1e923e5..5cac19b 100644
--- a/include/linux/kthread.h
+++ b/include/linux/kthread.h
@@ -4,11 +4,11 @@
#include <linux/err.h>
#include <linux/sched.h>
+__printf(4, 5)
struct task_struct *kthread_create_on_node(int (*threadfn)(void *data),
void *data,
int node,
- const char namefmt[], ...)
- __attribute__((format(printf, 4, 5)));
+ const char namefmt[], ...);
#define kthread_create(threadfn, data, namefmt, arg...) \
kthread_create_on_node(threadfn, data, -1, namefmt, ##arg)
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 23fa829..cafc09a 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -1256,13 +1256,13 @@
/*
* printk helpers
*/
-__attribute__((format (printf, 3, 4)))
+__printf(3, 4)
int ata_port_printk(const struct ata_port *ap, const char *level,
const char *fmt, ...);
-__attribute__((format (printf, 3, 4)))
+__printf(3, 4)
int ata_link_printk(const struct ata_link *link, const char *level,
const char *fmt, ...);
-__attribute__((format (printf, 3, 4)))
+__printf(3, 4)
int ata_dev_printk(const struct ata_device *dev, const char *level,
const char *fmt, ...);
@@ -1304,10 +1304,10 @@
/*
* ata_eh_info helpers
*/
-extern void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
-extern void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
+extern __printf(2, 3)
+void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...);
+extern __printf(2, 3)
+void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...);
extern void ata_ehi_clear_desc(struct ata_eh_info *ehi);
static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi)
@@ -1321,8 +1321,8 @@
/*
* port description helpers
*/
-extern void ata_port_desc(struct ata_port *ap, const char *fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
+extern __printf(2, 3)
+void ata_port_desc(struct ata_port *ap, const char *fmt, ...);
#ifdef CONFIG_PCI
extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset,
const char *name);
diff --git a/include/linux/lis3lv02d.h b/include/linux/lis3lv02d.h
index d4292c8..f1664c6 100644
--- a/include/linux/lis3lv02d.h
+++ b/include/linux/lis3lv02d.h
@@ -113,7 +113,6 @@
s8 axis_x;
s8 axis_y;
s8 axis_z;
-#define LIS3_USE_REGULATOR_CTRL 0x01
#define LIS3_USE_BLOCK_READ 0x02
u16 driver_features;
int default_rate;
diff --git a/include/linux/llist.h b/include/linux/llist.h
index 7287734..801b44b 100644
--- a/include/linux/llist.h
+++ b/include/linux/llist.h
@@ -148,7 +148,7 @@
* @new: new entry to be added
* @head: the head for your lock-less list
*
- * Return whether list is empty before adding.
+ * Returns true if the list was empty prior to adding this entry.
*/
static inline bool llist_add(struct llist_node *new, struct llist_head *head)
{
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 7525e38..e6b843e 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -80,6 +80,7 @@
phys_addr_t align,
phys_addr_t max_addr);
extern phys_addr_t memblock_phys_mem_size(void);
+extern phys_addr_t memblock_start_of_DRAM(void);
extern phys_addr_t memblock_end_of_DRAM(void);
extern void memblock_enforce_memory_limit(phys_addr_t memory_limit);
extern int memblock_is_memory(phys_addr_t addr);
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 343bd76..ac797fa 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -35,7 +35,8 @@
extern unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan,
struct list_head *dst,
unsigned long *scanned, int order,
- int mode, struct zone *z,
+ isolate_mode_t mode,
+ struct zone *z,
struct mem_cgroup *mem_cont,
int active, int file);
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 7438071..3b3e3b8 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1334,7 +1334,8 @@
extern void si_meminfo_node(struct sysinfo *val, int nid);
extern int after_bootmem;
-extern void warn_alloc_failed(gfp_t gfp_mask, int order, const char *fmt, ...);
+extern __printf(3, 4)
+void warn_alloc_failed(gfp_t gfp_mask, int order, const char *fmt, ...);
extern void setup_per_cpu_pageset(void);
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index c93d00a..3e01a19 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -304,8 +304,15 @@
unsigned long hiwater_rss; /* High-watermark of RSS usage */
unsigned long hiwater_vm; /* High-water virtual memory usage */
- unsigned long total_vm, locked_vm, shared_vm, exec_vm;
- unsigned long stack_vm, reserved_vm, def_flags, nr_ptes;
+ unsigned long total_vm; /* Total pages mapped */
+ unsigned long locked_vm; /* Pages that have PG_mlocked set */
+ unsigned long pinned_vm; /* Refcount permanently increased */
+ unsigned long shared_vm; /* Shared pages (files) */
+ unsigned long exec_vm; /* VM_EXEC & ~VM_WRITE */
+ unsigned long stack_vm; /* VM_GROWSUP/DOWN */
+ unsigned long reserved_vm; /* VM_RESERVED|VM_IO pages */
+ unsigned long def_flags;
+ unsigned long nr_ptes; /* Page table pages */
unsigned long start_code, end_code, start_data, end_data;
unsigned long start_brk, brk, start_stack;
unsigned long arg_start, arg_end, env_start, env_end;
@@ -336,9 +343,6 @@
unsigned int token_priority;
unsigned int last_interval;
- /* How many tasks sharing this mm are OOM_DISABLE */
- atomic_t oom_disable_count;
-
unsigned long flags; /* Must use atomic bitops to access the bits */
struct core_state *core_state; /* coredumping support */
diff --git a/include/linux/mmiotrace.h b/include/linux/mmiotrace.h
index 97491f7..c5d5278 100644
--- a/include/linux/mmiotrace.h
+++ b/include/linux/mmiotrace.h
@@ -49,8 +49,7 @@
extern void mmiotrace_iounmap(volatile void __iomem *addr);
/* For anyone to insert markers. Remember trailing newline. */
-extern int mmiotrace_printk(const char *fmt, ...)
- __attribute__ ((format (printf, 1, 2)));
+extern __printf(1, 2) int mmiotrace_printk(const char *fmt, ...);
#else /* !CONFIG_MMIOTRACE: */
static inline int is_kmmio_active(void)
{
@@ -71,10 +70,7 @@
{
}
-static inline int mmiotrace_printk(const char *fmt, ...)
- __attribute__ ((format (printf, 1, 0)));
-
-static inline int mmiotrace_printk(const char *fmt, ...)
+static inline __printf(1, 2) int mmiotrace_printk(const char *fmt, ...)
{
return 0;
}
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index be1ac8d..188cb2f 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -100,6 +100,7 @@
NR_UNSTABLE_NFS, /* NFS unstable pages */
NR_BOUNCE,
NR_VMSCAN_WRITE,
+ NR_VMSCAN_IMMEDIATE, /* Prioritise for reclaim when writeback ends */
NR_WRITEBACK_TEMP, /* Writeback using temporary buffers */
NR_ISOLATED_ANON, /* Temporary isolated pages from anon lru */
NR_ISOLATED_FILE, /* Temporary isolated pages from file lru */
@@ -164,6 +165,18 @@
#define LRU_ALL_EVICTABLE (LRU_ALL_FILE | LRU_ALL_ANON)
#define LRU_ALL ((1 << NR_LRU_LISTS) - 1)
+/* Isolate inactive pages */
+#define ISOLATE_INACTIVE ((__force isolate_mode_t)0x1)
+/* Isolate active pages */
+#define ISOLATE_ACTIVE ((__force isolate_mode_t)0x2)
+/* Isolate clean file */
+#define ISOLATE_CLEAN ((__force isolate_mode_t)0x4)
+/* Isolate unmapped file */
+#define ISOLATE_UNMAPPED ((__force isolate_mode_t)0x8)
+
+/* LRU Isolation modes. */
+typedef unsigned __bitwise__ isolate_mode_t;
+
enum zone_watermarks {
WMARK_MIN,
WMARK_LOW,
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index df1c836..cbeb586 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -2622,23 +2622,23 @@
extern int __netdev_printk(const char *level, const struct net_device *dev,
struct va_format *vaf);
-extern int netdev_printk(const char *level, const struct net_device *dev,
- const char *format, ...)
- __attribute__ ((format (printf, 3, 4)));
-extern int netdev_emerg(const struct net_device *dev, const char *format, ...)
- __attribute__ ((format (printf, 2, 3)));
-extern int netdev_alert(const struct net_device *dev, const char *format, ...)
- __attribute__ ((format (printf, 2, 3)));
-extern int netdev_crit(const struct net_device *dev, const char *format, ...)
- __attribute__ ((format (printf, 2, 3)));
-extern int netdev_err(const struct net_device *dev, const char *format, ...)
- __attribute__ ((format (printf, 2, 3)));
-extern int netdev_warn(const struct net_device *dev, const char *format, ...)
- __attribute__ ((format (printf, 2, 3)));
-extern int netdev_notice(const struct net_device *dev, const char *format, ...)
- __attribute__ ((format (printf, 2, 3)));
-extern int netdev_info(const struct net_device *dev, const char *format, ...)
- __attribute__ ((format (printf, 2, 3)));
+extern __printf(3, 4)
+int netdev_printk(const char *level, const struct net_device *dev,
+ const char *format, ...);
+extern __printf(2, 3)
+int netdev_emerg(const struct net_device *dev, const char *format, ...);
+extern __printf(2, 3)
+int netdev_alert(const struct net_device *dev, const char *format, ...);
+extern __printf(2, 3)
+int netdev_crit(const struct net_device *dev, const char *format, ...);
+extern __printf(2, 3)
+int netdev_err(const struct net_device *dev, const char *format, ...);
+extern __printf(2, 3)
+int netdev_warn(const struct net_device *dev, const char *format, ...);
+extern __printf(2, 3)
+int netdev_notice(const struct net_device *dev, const char *format, ...);
+extern __printf(2, 3)
+int netdev_info(const struct net_device *dev, const char *format, ...);
#define MODULE_ALIAS_NETDEV(device) \
MODULE_ALIAS("netdev-" device)
diff --git a/include/linux/oom.h b/include/linux/oom.h
index 13b7b02..6f9d04a 100644
--- a/include/linux/oom.h
+++ b/include/linux/oom.h
@@ -40,6 +40,7 @@
CONSTRAINT_MEMCG,
};
+extern void compare_swap_oom_score_adj(int old_val, int new_val);
extern int test_set_oom_score_adj(int new_val);
extern unsigned int oom_badness(struct task_struct *p, struct mem_cgroup *mem,
diff --git a/include/linux/platform_data/leds-renesas-tpu.h b/include/linux/platform_data/leds-renesas-tpu.h
new file mode 100644
index 0000000..0553870
--- /dev/null
+++ b/include/linux/platform_data/leds-renesas-tpu.h
@@ -0,0 +1,14 @@
+#ifndef __LEDS_RENESAS_TPU_H__
+#define __LEDS_RENESAS_TPU_H__
+
+struct led_renesas_tpu_config {
+ char *name;
+ unsigned pin_gpio_fn;
+ unsigned pin_gpio;
+ unsigned int channel_offset;
+ unsigned int timer_bit;
+ unsigned int max_brightness;
+ unsigned int refresh_rate;
+};
+
+#endif /* __LEDS_RENESAS_TPU_H__ */
diff --git a/include/linux/printk.h b/include/linux/printk.h
index 0101d55..f0e22f7 100644
--- a/include/linux/printk.h
+++ b/include/linux/printk.h
@@ -82,22 +82,22 @@
* Dummy printk for disabled debugging statements to use whilst maintaining
* gcc's format and side-effect checking.
*/
-static inline __attribute__ ((format (printf, 1, 2)))
+static inline __printf(1, 2)
int no_printk(const char *fmt, ...)
{
return 0;
}
-extern asmlinkage __attribute__ ((format (printf, 1, 2)))
+extern asmlinkage __printf(1, 2)
void early_printk(const char *fmt, ...);
extern int printk_needs_cpu(int cpu);
extern void printk_tick(void);
#ifdef CONFIG_PRINTK
-asmlinkage __attribute__ ((format (printf, 1, 0)))
+asmlinkage __printf(1, 0)
int vprintk(const char *fmt, va_list args);
-asmlinkage __attribute__ ((format (printf, 1, 2))) __cold
+asmlinkage __printf(1, 2) __cold
int printk(const char *fmt, ...);
/*
@@ -117,12 +117,12 @@
void log_buf_kexec_setup(void);
void __init setup_log_buf(int early);
#else
-static inline __attribute__ ((format (printf, 1, 0)))
+static inline __printf(1, 0)
int vprintk(const char *s, va_list args)
{
return 0;
}
-static inline __attribute__ ((format (printf, 1, 2))) __cold
+static inline __printf(1, 2) __cold
int printk(const char *s, ...)
{
return 0;
diff --git a/include/linux/quotaops.h b/include/linux/quotaops.h
index 26f9e36..d93f95e 100644
--- a/include/linux/quotaops.h
+++ b/include/linux/quotaops.h
@@ -31,7 +31,7 @@
#define quota_error(sb, fmt, args...) \
__quota_error((sb), __func__, fmt , ## args)
-extern __attribute__((format (printf, 3, 4)))
+extern __printf(3, 4)
void __quota_error(struct super_block *sb, const char *func,
const char *fmt, ...);
diff --git a/include/linux/seq_file.h b/include/linux/seq_file.h
index be720cd..0b69a46 100644
--- a/include/linux/seq_file.h
+++ b/include/linux/seq_file.h
@@ -84,8 +84,7 @@
int seq_puts(struct seq_file *m, const char *s);
int seq_write(struct seq_file *seq, const void *data, size_t len);
-int seq_printf(struct seq_file *, const char *, ...)
- __attribute__ ((format (printf,2,3)));
+__printf(2, 3) int seq_printf(struct seq_file *, const char *, ...);
int seq_path(struct seq_file *, struct path *, char *);
int seq_dentry(struct seq_file *, struct dentry *, char *);
diff --git a/include/linux/shrinker.h b/include/linux/shrinker.h
index 790651b..a83833a 100644
--- a/include/linux/shrinker.h
+++ b/include/linux/shrinker.h
@@ -20,6 +20,7 @@
* 'nr_to_scan' entries and attempt to free them up. It should return
* the number of objects which remain in the cache. If it returns -1, it means
* it cannot do any scanning at this time (eg. there is a risk of deadlock).
+ * The callback must not return -1 if nr_to_scan is zero.
*
* The 'gfpmask' refers to the allocation we are currently trying to
* fulfil.
diff --git a/include/linux/spi/l4f00242t03.h b/include/linux/spi/l4f00242t03.h
index aee1dbd..bc8677c 100644
--- a/include/linux/spi/l4f00242t03.h
+++ b/include/linux/spi/l4f00242t03.h
@@ -24,8 +24,6 @@
struct l4f00242t03_pdata {
unsigned int reset_gpio;
unsigned int data_enable_gpio;
- const char *io_supply; /* will be set to 1.8 V */
- const char *core_supply; /* will be set to 2.8 V */
};
#endif /* _INCLUDE_LINUX_SPI_L4F00242T03_H_ */
diff --git a/include/linux/string.h b/include/linux/string.h
index a176db2..e033564 100644
--- a/include/linux/string.h
+++ b/include/linux/string.h
@@ -114,6 +114,7 @@
#ifndef __HAVE_ARCH_MEMCHR
extern void * memchr(const void *,int,__kernel_size_t);
#endif
+void *memchr_inv(const void *s, int c, size_t n);
extern char *kstrdup(const char *s, gfp_t gfp);
extern char *kstrndup(const char *s, size_t len, gfp_t gfp);
diff --git a/include/linux/swap.h b/include/linux/swap.h
index c71f84b..1e22e12 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -243,15 +243,10 @@
__lru_cache_add(page, LRU_INACTIVE_FILE);
}
-/* LRU Isolation modes. */
-#define ISOLATE_INACTIVE 0 /* Isolate inactive pages. */
-#define ISOLATE_ACTIVE 1 /* Isolate active pages. */
-#define ISOLATE_BOTH 2 /* Isolate both active and inactive pages. */
-
/* linux/mm/vmscan.c */
extern unsigned long try_to_free_pages(struct zonelist *zonelist, int order,
gfp_t gfp_mask, nodemask_t *mask);
-extern int __isolate_lru_page(struct page *page, int mode, int file);
+extern int __isolate_lru_page(struct page *page, isolate_mode_t mode, int file);
extern unsigned long try_to_free_mem_cgroup_pages(struct mem_cgroup *mem,
gfp_t gfp_mask, bool noswap);
extern unsigned long mem_cgroup_shrink_node_zone(struct mem_cgroup *mem,
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index 1ff0ec2..86a24b1 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -844,4 +844,17 @@
struct file_handle __user *handle,
int flags);
asmlinkage long sys_setns(int fd, int nstype);
+asmlinkage long sys_process_vm_readv(pid_t pid,
+ const struct iovec __user *lvec,
+ unsigned long liovcnt,
+ const struct iovec __user *rvec,
+ unsigned long riovcnt,
+ unsigned long flags);
+asmlinkage long sys_process_vm_writev(pid_t pid,
+ const struct iovec __user *lvec,
+ unsigned long liovcnt,
+ const struct iovec __user *rvec,
+ unsigned long riovcnt,
+ unsigned long flags);
+
#endif
diff --git a/include/linux/trace_seq.h b/include/linux/trace_seq.h
index 5cf397c..7dadc3d 100644
--- a/include/linux/trace_seq.h
+++ b/include/linux/trace_seq.h
@@ -29,10 +29,10 @@
* Currently only defined when tracing is enabled.
*/
#ifdef CONFIG_TRACING
-extern int trace_seq_printf(struct trace_seq *s, const char *fmt, ...)
- __attribute__ ((format (printf, 2, 3)));
-extern int trace_seq_vprintf(struct trace_seq *s, const char *fmt, va_list args)
- __attribute__ ((format (printf, 2, 0)));
+extern __printf(2, 3)
+int trace_seq_printf(struct trace_seq *s, const char *fmt, ...);
+extern __printf(2, 0)
+int trace_seq_vprintf(struct trace_seq *s, const char *fmt, va_list args);
extern int
trace_seq_bprintf(struct trace_seq *s, const char *fmt, const u32 *binary);
extern int trace_print_seq(struct seq_file *m, struct trace_seq *s);
diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h
index 9332e52..687fb11 100644
--- a/include/linux/vmalloc.h
+++ b/include/linux/vmalloc.h
@@ -13,6 +13,7 @@
#define VM_MAP 0x00000004 /* vmap()ed pages */
#define VM_USERMAP 0x00000008 /* suitable for remap_vmalloc_range */
#define VM_VPAGES 0x00000010 /* buffer for pages was vmalloc'ed */
+#define VM_UNLIST 0x00000020 /* vm_struct is not listed in vmlist */
/* bits [20..32] reserved for arch specific ioremap internals */
/*
diff --git a/include/net/bluetooth/bluetooth.h b/include/net/bluetooth/bluetooth.h
index e727555..e86af08 100644
--- a/include/net/bluetooth/bluetooth.h
+++ b/include/net/bluetooth/bluetooth.h
@@ -77,7 +77,7 @@
#define BT_POWER_FORCE_ACTIVE_OFF 0
#define BT_POWER_FORCE_ACTIVE_ON 1
-__attribute__((format (printf, 2, 3)))
+__printf(2, 3)
int bt_printk(const char *level, const char *fmt, ...);
#define BT_INFO(fmt, arg...) bt_printk(KERN_INFO, pr_fmt(fmt), ##arg)
diff --git a/include/net/netfilter/nf_log.h b/include/net/netfilter/nf_log.h
index 920997f..e991bd0 100644
--- a/include/net/netfilter/nf_log.h
+++ b/include/net/netfilter/nf_log.h
@@ -53,12 +53,13 @@
void nf_log_unbind_pf(u_int8_t pf);
/* Calls the registered backend logging function */
+__printf(7, 8)
void nf_log_packet(u_int8_t pf,
unsigned int hooknum,
const struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
const struct nf_loginfo *li,
- const char *fmt, ...) __attribute__ ((format(printf,7,8)));
+ const char *fmt, ...);
#endif /* _NF_LOG_H */
diff --git a/include/net/sock.h b/include/net/sock.h
index 5ac682f..c6658be 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -76,8 +76,8 @@
printk(KERN_DEBUG msg); } while (0)
#else
/* Validate arguments and do nothing */
-static inline void __attribute__ ((format (printf, 2, 3)))
-SOCK_DEBUG(struct sock *sk, const char *msg, ...)
+static inline __printf(2, 3)
+void SOCK_DEBUG(struct sock *sk, const char *msg, ...)
{
}
#endif
diff --git a/include/sound/core.h b/include/sound/core.h
index 1fa2407..91d5138 100644
--- a/include/sound/core.h
+++ b/include/sound/core.h
@@ -326,9 +326,9 @@
/* --- */
#if defined(CONFIG_SND_DEBUG) || defined(CONFIG_SND_VERBOSE_PRINTK)
+__printf(4, 5)
void __snd_printk(unsigned int level, const char *file, int line,
- const char *format, ...)
- __attribute__ ((format (printf, 4, 5)));
+ const char *format, ...);
#else
#define __snd_printk(level, file, line, format, args...) \
printk(format, ##args)
diff --git a/include/sound/info.h b/include/sound/info.h
index 4e94cf1..5492cc4 100644
--- a/include/sound/info.h
+++ b/include/sound/info.h
@@ -110,8 +110,8 @@
static inline void snd_card_info_read_oss(struct snd_info_buffer *buffer) {}
#endif
-int snd_iprintf(struct snd_info_buffer *buffer, const char *fmt, ...) \
- __attribute__ ((format (printf, 2, 3)));
+__printf(2, 3)
+int snd_iprintf(struct snd_info_buffer *buffer, const char *fmt, ...);
int snd_info_init(void);
int snd_info_done(void);
diff --git a/include/sound/seq_kernel.h b/include/sound/seq_kernel.h
index 3d9afb6..f352a98 100644
--- a/include/sound/seq_kernel.h
+++ b/include/sound/seq_kernel.h
@@ -75,9 +75,9 @@
};
/* interface for kernel client */
+__printf(3, 4)
int snd_seq_create_kernel_client(struct snd_card *card, int client_index,
- const char *name_fmt, ...)
- __attribute__ ((format (printf, 3, 4)));
+ const char *name_fmt, ...);
int snd_seq_delete_kernel_client(int client);
int snd_seq_kernel_client_enqueue(int client, struct snd_seq_event *ev, int atomic, int hop);
int snd_seq_kernel_client_dispatch(int client, struct snd_seq_event *ev, int atomic, int hop);
diff --git a/include/trace/events/vmscan.h b/include/trace/events/vmscan.h
index 36851f7..edc4b3d 100644
--- a/include/trace/events/vmscan.h
+++ b/include/trace/events/vmscan.h
@@ -266,7 +266,7 @@
unsigned long nr_lumpy_taken,
unsigned long nr_lumpy_dirty,
unsigned long nr_lumpy_failed,
- int isolate_mode),
+ isolate_mode_t isolate_mode),
TP_ARGS(order, nr_requested, nr_scanned, nr_taken, nr_lumpy_taken, nr_lumpy_dirty, nr_lumpy_failed, isolate_mode),
@@ -278,7 +278,7 @@
__field(unsigned long, nr_lumpy_taken)
__field(unsigned long, nr_lumpy_dirty)
__field(unsigned long, nr_lumpy_failed)
- __field(int, isolate_mode)
+ __field(isolate_mode_t, isolate_mode)
),
TP_fast_assign(
@@ -312,7 +312,7 @@
unsigned long nr_lumpy_taken,
unsigned long nr_lumpy_dirty,
unsigned long nr_lumpy_failed,
- int isolate_mode),
+ isolate_mode_t isolate_mode),
TP_ARGS(order, nr_requested, nr_scanned, nr_taken, nr_lumpy_taken, nr_lumpy_dirty, nr_lumpy_failed, isolate_mode)
@@ -327,7 +327,7 @@
unsigned long nr_lumpy_taken,
unsigned long nr_lumpy_dirty,
unsigned long nr_lumpy_failed,
- int isolate_mode),
+ isolate_mode_t isolate_mode),
TP_ARGS(order, nr_requested, nr_scanned, nr_taken, nr_lumpy_taken, nr_lumpy_dirty, nr_lumpy_failed, isolate_mode)
diff --git a/include/xen/hvc-console.h b/include/xen/hvc-console.h
index 901724d..b62dfef 100644
--- a/include/xen/hvc-console.h
+++ b/include/xen/hvc-console.h
@@ -6,12 +6,12 @@
#ifdef CONFIG_HVC_XEN
void xen_console_resume(void);
void xen_raw_console_write(const char *str);
-__attribute__((format(printf, 1, 2)))
+__printf(1, 2)
void xen_raw_printk(const char *fmt, ...);
#else
static inline void xen_console_resume(void) { }
static inline void xen_raw_console_write(const char *str) { }
-static inline __attribute__((format(printf, 1, 2)))
+static inline __printf(1, 2)
void xen_raw_printk(const char *fmt, ...) { }
#endif
diff --git a/include/xen/xenbus.h b/include/xen/xenbus.h
index aceeca7..b9f9fb5 100644
--- a/include/xen/xenbus.h
+++ b/include/xen/xenbus.h
@@ -156,9 +156,9 @@
__attribute__((format(scanf, 4, 5)));
/* Single printf and write: returns -errno or 0. */
+__printf(4, 5)
int xenbus_printf(struct xenbus_transaction t,
- const char *dir, const char *node, const char *fmt, ...)
- __attribute__((format(printf, 4, 5)));
+ const char *dir, const char *node, const char *fmt, ...);
/* Generic read function: NULL-terminated triples of name,
* sprintf-style type string, and pointer. Returns 0 or errno.*/
@@ -200,11 +200,11 @@
struct xenbus_watch *watch,
void (*callback)(struct xenbus_watch *,
const char **, unsigned int));
+__printf(4, 5)
int xenbus_watch_pathfmt(struct xenbus_device *dev, struct xenbus_watch *watch,
void (*callback)(struct xenbus_watch *,
const char **, unsigned int),
- const char *pathfmt, ...)
- __attribute__ ((format (printf, 4, 5)));
+ const char *pathfmt, ...);
int xenbus_switch_state(struct xenbus_device *dev, enum xenbus_state new_state);
int xenbus_grant_ring(struct xenbus_device *dev, unsigned long ring_mfn);
@@ -223,9 +223,9 @@
enum xenbus_state xenbus_read_driver_state(const char *path);
-__attribute__((format(printf, 3, 4)))
+__printf(3, 4)
void xenbus_dev_error(struct xenbus_device *dev, int err, const char *fmt, ...);
-__attribute__((format(printf, 3, 4)))
+__printf(3, 4)
void xenbus_dev_fatal(struct xenbus_device *dev, int err, const char *fmt, ...);
const char *xenbus_strstate(enum xenbus_state state);
diff --git a/ipc/mqueue.c b/ipc/mqueue.c
index ed049ea..2e0ecfc 100644
--- a/ipc/mqueue.c
+++ b/ipc/mqueue.c
@@ -449,8 +449,8 @@
set_current_state(TASK_INTERRUPTIBLE);
spin_unlock(&info->lock);
- time = schedule_hrtimeout_range_clock(timeout,
- HRTIMER_MODE_ABS, 0, CLOCK_REALTIME);
+ time = schedule_hrtimeout_range_clock(timeout, 0,
+ HRTIMER_MODE_ABS, CLOCK_REALTIME);
while (ewp->state == STATE_PENDING)
cpu_relax();
diff --git a/kernel/debug/gdbstub.c b/kernel/debug/gdbstub.c
index 3487248..c22d8c2 100644
--- a/kernel/debug/gdbstub.c
+++ b/kernel/debug/gdbstub.c
@@ -217,7 +217,7 @@
/* Pack in hex chars */
for (i = 0; i < wcount; i++)
- bufptr = pack_hex_byte(bufptr, s[i]);
+ bufptr = hex_byte_pack(bufptr, s[i]);
*bufptr = '\0';
/* Move up */
@@ -249,7 +249,7 @@
if (err)
return NULL;
while (count > 0) {
- buf = pack_hex_byte(buf, *tmp);
+ buf = hex_byte_pack(buf, *tmp);
tmp++;
count--;
}
@@ -411,14 +411,14 @@
limit = id + (BUF_THREAD_ID_SIZE / 2);
while (id < limit) {
if (!lzero || *id != 0) {
- pkt = pack_hex_byte(pkt, *id);
+ pkt = hex_byte_pack(pkt, *id);
lzero = 0;
}
id++;
}
if (lzero)
- pkt = pack_hex_byte(pkt, 0);
+ pkt = hex_byte_pack(pkt, 0);
return pkt;
}
@@ -486,7 +486,7 @@
dbg_remove_all_break();
remcom_out_buffer[0] = 'S';
- pack_hex_byte(&remcom_out_buffer[1], ks->signo);
+ hex_byte_pack(&remcom_out_buffer[1], ks->signo);
}
static void gdb_get_regs_helper(struct kgdb_state *ks)
@@ -954,7 +954,7 @@
/* Reply to host that an exception has occurred */
ptr = remcom_out_buffer;
*ptr++ = 'T';
- ptr = pack_hex_byte(ptr, ks->signo);
+ ptr = hex_byte_pack(ptr, ks->signo);
ptr += strlen(strcpy(ptr, "thread:"));
int_to_threadref(thref, shadow_pid(current->pid));
ptr = pack_threadid(ptr, thref);
diff --git a/kernel/events/core.c b/kernel/events/core.c
index d1a1bee..12a0287 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -3544,7 +3544,7 @@
struct ring_buffer *rb = event->rb;
atomic_long_sub((size >> PAGE_SHIFT) + 1, &user->locked_vm);
- vma->vm_mm->locked_vm -= event->mmap_locked;
+ vma->vm_mm->pinned_vm -= event->mmap_locked;
rcu_assign_pointer(event->rb, NULL);
mutex_unlock(&event->mmap_mutex);
@@ -3625,7 +3625,7 @@
lock_limit = rlimit(RLIMIT_MEMLOCK);
lock_limit >>= PAGE_SHIFT;
- locked = vma->vm_mm->locked_vm + extra;
+ locked = vma->vm_mm->pinned_vm + extra;
if ((locked > lock_limit) && perf_paranoid_tracepoint_raw() &&
!capable(CAP_IPC_LOCK)) {
@@ -3651,7 +3651,7 @@
atomic_long_add(user_extra, &user->locked_vm);
event->mmap_locked = extra;
event->mmap_user = get_current_user();
- vma->vm_mm->locked_vm += event->mmap_locked;
+ vma->vm_mm->pinned_vm += event->mmap_locked;
unlock:
if (!ret)
diff --git a/kernel/exit.c b/kernel/exit.c
index 2913b35..d0b7d98 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -681,8 +681,6 @@
enter_lazy_tlb(mm, current);
/* We don't want this task to be frozen prematurely */
clear_freeze_flag(tsk);
- if (tsk->signal->oom_score_adj == OOM_SCORE_ADJ_MIN)
- atomic_dec(&mm->oom_disable_count);
task_unlock(tsk);
mm_update_next_owner(mm);
mmput(mm);
diff --git a/kernel/fork.c b/kernel/fork.c
index 8e6b6f4..70d7619 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -501,7 +501,6 @@
mm->cached_hole_size = ~0UL;
mm_init_aio(mm);
mm_init_owner(mm, p);
- atomic_set(&mm->oom_disable_count, 0);
if (likely(!mm_alloc_pgd(mm))) {
mm->def_flags = 0;
@@ -816,8 +815,6 @@
/* Initializing for Swap token stuff */
mm->token_priority = 0;
mm->last_interval = 0;
- if (tsk->signal->oom_score_adj == OOM_SCORE_ADJ_MIN)
- atomic_inc(&mm->oom_disable_count);
tsk->mm = mm;
tsk->active_mm = mm;
@@ -1391,13 +1388,8 @@
bad_fork_cleanup_namespaces:
exit_task_namespaces(p);
bad_fork_cleanup_mm:
- if (p->mm) {
- task_lock(p);
- if (p->signal->oom_score_adj == OOM_SCORE_ADJ_MIN)
- atomic_dec(&p->mm->oom_disable_count);
- task_unlock(p);
+ if (p->mm)
mmput(p->mm);
- }
bad_fork_cleanup_signal:
if (!(clone_flags & CLONE_THREAD))
free_signal_struct(p->signal);
diff --git a/kernel/printk.c b/kernel/printk.c
index b7da183..1455a0d 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -532,6 +532,9 @@
}
early_param("ignore_loglevel", ignore_loglevel_setup);
+module_param_named(ignore_loglevel, ignore_loglevel, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(ignore_loglevel, "ignore loglevel setting, to"
+ "print all kernel messages to the console.");
/*
* Write out chars from start to end - 1 inclusive
@@ -592,9 +595,6 @@
/* multi digit including the level and facility number */
char *endp = NULL;
- if (p[1] < '0' && p[1] > '9')
- return 0;
-
lev = (simple_strtoul(&p[1], &endp, 10) & 7);
if (endp == NULL || endp[0] != '>')
return 0;
@@ -1108,6 +1108,10 @@
return 1;
}
__setup("no_console_suspend", console_suspend_disable);
+module_param_named(console_suspend, console_suspend_enabled,
+ bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(console_suspend, "suspend console during suspend"
+ " and hibernate operations");
/**
* suspend_console - suspend the console subsystem
diff --git a/kernel/stop_machine.c b/kernel/stop_machine.c
index ba5070c..5b0951a 100644
--- a/kernel/stop_machine.c
+++ b/kernel/stop_machine.c
@@ -41,6 +41,7 @@
};
static DEFINE_PER_CPU(struct cpu_stopper, cpu_stopper);
+static bool stop_machine_initialized = false;
static void cpu_stop_init_done(struct cpu_stop_done *done, unsigned int nr_todo)
{
@@ -386,6 +387,8 @@
cpu_stop_cpu_callback(&cpu_stop_cpu_notifier, CPU_ONLINE, bcpu);
register_cpu_notifier(&cpu_stop_cpu_notifier);
+ stop_machine_initialized = true;
+
return 0;
}
early_initcall(cpu_stop_init);
@@ -485,6 +488,25 @@
.num_threads = num_online_cpus(),
.active_cpus = cpus };
+ if (!stop_machine_initialized) {
+ /*
+ * Handle the case where stop_machine() is called
+ * early in boot before stop_machine() has been
+ * initialized.
+ */
+ unsigned long flags;
+ int ret;
+
+ WARN_ON_ONCE(smdata.num_threads != 1);
+
+ local_irq_save(flags);
+ hard_irq_disable();
+ ret = (*fn)(data);
+ local_irq_restore(flags);
+
+ return ret;
+ }
+
/* Set the initial state and stop all online cpus. */
set_state(&smdata, STOPMACHINE_PREPARE);
return stop_cpus(cpu_online_mask, stop_machine_cpu_stop, &smdata);
diff --git a/kernel/sys_ni.c b/kernel/sys_ni.c
index a9a5de0..47bfa16 100644
--- a/kernel/sys_ni.c
+++ b/kernel/sys_ni.c
@@ -145,6 +145,10 @@
cond_syscall(sys_io_cancel);
cond_syscall(sys_io_getevents);
cond_syscall(sys_syslog);
+cond_syscall(sys_process_vm_readv);
+cond_syscall(sys_process_vm_writev);
+cond_syscall(compat_sys_process_vm_readv);
+cond_syscall(compat_sys_process_vm_writev);
/* arch-specific weak syscall entries */
cond_syscall(sys_pciconfig_read);
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 2fe2bc2..ae27196 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -57,6 +57,7 @@
#include <linux/pipe_fs_i.h>
#include <linux/oom.h>
#include <linux/kmod.h>
+#include <linux/capability.h>
#include <asm/uaccess.h>
#include <asm/processor.h>
@@ -134,6 +135,7 @@
static int min_percpu_pagelist_fract = 8;
static int ngroups_max = NGROUPS_MAX;
+static const int cap_last_cap = CAP_LAST_CAP;
#ifdef CONFIG_INOTIFY_USER
#include <linux/inotify.h>
@@ -732,6 +734,13 @@
.mode = 0444,
.proc_handler = proc_dointvec,
},
+ {
+ .procname = "cap_last_cap",
+ .data = (void *)&cap_last_cap,
+ .maxlen = sizeof(int),
+ .mode = 0444,
+ .proc_handler = proc_dointvec,
+ },
#if defined(CONFIG_LOCKUP_DETECTOR)
{
.procname = "watchdog",
diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index d680381..1d7bca7 100644
--- a/kernel/watchdog.c
+++ b/kernel/watchdog.c
@@ -481,6 +481,8 @@
}
}
+/* sysctl functions */
+#ifdef CONFIG_SYSCTL
static void watchdog_enable_all_cpus(void)
{
int cpu;
@@ -510,8 +512,6 @@
}
-/* sysctl functions */
-#ifdef CONFIG_SYSCTL
/*
* proc handler for /proc/sys/kernel/nmi_watchdog,watchdog_thresh
*/
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index c583a57..82928f5 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -248,8 +248,9 @@
to determine when a task has become non-responsive and should
be considered hung.
- It can be adjusted at runtime via the kernel.hung_task_timeout
- sysctl or by writing a value to /proc/sys/kernel/hung_task_timeout.
+ It can be adjusted at runtime via the kernel.hung_task_timeout_secs
+ sysctl or by writing a value to
+ /proc/sys/kernel/hung_task_timeout_secs.
A timeout of 0 disables the check. The default is two minutes.
Keeping the default should be fine in most cases.
diff --git a/lib/bitmap.c b/lib/bitmap.c
index 2f4412e..0d4a127 100644
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -419,7 +419,7 @@
{
int c, old_c, totaldigits, ndigits, nchunks, nbits;
u32 chunk;
- const char __user *ubuf = buf;
+ const char __user __force *ubuf = (const char __user __force *)buf;
bitmap_zero(maskp, nmaskbits);
@@ -504,7 +504,9 @@
{
if (!access_ok(VERIFY_READ, ubuf, ulen))
return -EFAULT;
- return __bitmap_parse((const char *)ubuf, ulen, 1, maskp, nmaskbits);
+ return __bitmap_parse((const char __force *)ubuf,
+ ulen, 1, maskp, nmaskbits);
+
}
EXPORT_SYMBOL(bitmap_parse_user);
@@ -594,7 +596,7 @@
{
unsigned a, b;
int c, old_c, totaldigits;
- const char __user *ubuf = buf;
+ const char __user __force *ubuf = (const char __user __force *)buf;
int exp_digit, in_range;
totaldigits = c = 0;
@@ -694,7 +696,7 @@
{
if (!access_ok(VERIFY_READ, ubuf, ulen))
return -EFAULT;
- return __bitmap_parselist((const char *)ubuf,
+ return __bitmap_parselist((const char __force *)ubuf,
ulen, 1, maskp, nmaskbits);
}
EXPORT_SYMBOL(bitmap_parselist_user);
diff --git a/lib/idr.c b/lib/idr.c
index 5acf9bb..bbf211a 100644
--- a/lib/idr.c
+++ b/lib/idr.c
@@ -767,8 +767,8 @@
* @starting_id: id to start search at
* @p_id: pointer to the allocated handle
*
- * Allocate new ID above or equal to @ida. It should be called with
- * any required locks.
+ * Allocate new ID above or equal to @starting_id. It should be called
+ * with any required locks.
*
* If memory is required, it will return %-EAGAIN, you should unlock
* and go back to the ida_pre_get() call. If the ida is full, it will
diff --git a/lib/kstrtox.c b/lib/kstrtox.c
index 5e06675..7a94c8f 100644
--- a/lib/kstrtox.c
+++ b/lib/kstrtox.c
@@ -18,26 +18,40 @@
#include <linux/module.h>
#include <linux/types.h>
#include <asm/uaccess.h>
+#include "kstrtox.h"
-static int _kstrtoull(const char *s, unsigned int base, unsigned long long *res)
+const char *_parse_integer_fixup_radix(const char *s, unsigned int *base)
{
- unsigned long long acc;
- int ok;
-
- if (base == 0) {
+ if (*base == 0) {
if (s[0] == '0') {
if (_tolower(s[1]) == 'x' && isxdigit(s[2]))
- base = 16;
+ *base = 16;
else
- base = 8;
+ *base = 8;
} else
- base = 10;
+ *base = 10;
}
- if (base == 16 && s[0] == '0' && _tolower(s[1]) == 'x')
+ if (*base == 16 && s[0] == '0' && _tolower(s[1]) == 'x')
s += 2;
+ return s;
+}
- acc = 0;
- ok = 0;
+/*
+ * Convert non-negative integer string representation in explicitly given radix
+ * to an integer.
+ * Return number of characters consumed maybe or-ed with overflow bit.
+ * If overflow occurs, result integer (incorrect) is still returned.
+ *
+ * Don't you dare use this function.
+ */
+unsigned int _parse_integer(const char *s, unsigned int base, unsigned long long *res)
+{
+ unsigned int rv;
+ int overflow;
+
+ *res = 0;
+ rv = 0;
+ overflow = 0;
while (*s) {
unsigned int val;
@@ -45,23 +59,40 @@
val = *s - '0';
else if ('a' <= _tolower(*s) && _tolower(*s) <= 'f')
val = _tolower(*s) - 'a' + 10;
- else if (*s == '\n' && *(s + 1) == '\0')
- break;
else
- return -EINVAL;
+ break;
if (val >= base)
- return -EINVAL;
- if (acc > div_u64(ULLONG_MAX - val, base))
- return -ERANGE;
- acc = acc * base + val;
- ok = 1;
-
+ break;
+ if (*res > div_u64(ULLONG_MAX - val, base))
+ overflow = 1;
+ *res = *res * base + val;
+ rv++;
s++;
}
- if (!ok)
+ if (overflow)
+ rv |= KSTRTOX_OVERFLOW;
+ return rv;
+}
+
+static int _kstrtoull(const char *s, unsigned int base, unsigned long long *res)
+{
+ unsigned long long _res;
+ unsigned int rv;
+
+ s = _parse_integer_fixup_radix(s, &base);
+ rv = _parse_integer(s, base, &_res);
+ if (rv & KSTRTOX_OVERFLOW)
+ return -ERANGE;
+ rv &= ~KSTRTOX_OVERFLOW;
+ if (rv == 0)
return -EINVAL;
- *res = acc;
+ s += rv;
+ if (*s == '\n')
+ s++;
+ if (*s)
+ return -EINVAL;
+ *res = _res;
return 0;
}
diff --git a/lib/kstrtox.h b/lib/kstrtox.h
new file mode 100644
index 0000000..f13eeea
--- /dev/null
+++ b/lib/kstrtox.h
@@ -0,0 +1,8 @@
+#ifndef _LIB_KSTRTOX_H
+#define _LIB_KSTRTOX_H
+
+#define KSTRTOX_OVERFLOW (1U << 31)
+const char *_parse_integer_fixup_radix(const char *s, unsigned int *base);
+unsigned int _parse_integer(const char *s, unsigned int base, unsigned long long *res);
+
+#endif
diff --git a/lib/percpu_counter.c b/lib/percpu_counter.c
index f087105..f8a3f1a 100644
--- a/lib/percpu_counter.c
+++ b/lib/percpu_counter.c
@@ -10,8 +10,10 @@
#include <linux/module.h>
#include <linux/debugobjects.h>
+#ifdef CONFIG_HOTPLUG_CPU
static LIST_HEAD(percpu_counters);
static DEFINE_MUTEX(percpu_counters_lock);
+#endif
#ifdef CONFIG_DEBUG_OBJECTS_PERCPU_COUNTER
diff --git a/lib/radix-tree.c b/lib/radix-tree.c
index a2f9da5..d9df745 100644
--- a/lib/radix-tree.c
+++ b/lib/radix-tree.c
@@ -576,7 +576,6 @@
{
unsigned int height, shift;
struct radix_tree_node *node;
- int saw_unset_tag = 0;
/* check the root's tag bit */
if (!root_tag_get(root, tag))
@@ -603,15 +602,10 @@
return 0;
offset = (index >> shift) & RADIX_TREE_MAP_MASK;
-
- /*
- * This is just a debug check. Later, we can bale as soon as
- * we see an unset tag.
- */
if (!tag_get(node, tag, offset))
- saw_unset_tag = 1;
+ return 0;
if (height == 1)
- return !!tag_get(node, tag, offset);
+ return 1;
node = rcu_dereference_raw(node->slots[offset]);
shift -= RADIX_TREE_MAP_SHIFT;
height--;
diff --git a/lib/spinlock_debug.c b/lib/spinlock_debug.c
index 4755b98..5f3eacd 100644
--- a/lib/spinlock_debug.c
+++ b/lib/spinlock_debug.c
@@ -49,13 +49,10 @@
EXPORT_SYMBOL(__rwlock_init);
-static void spin_bug(raw_spinlock_t *lock, const char *msg)
+static void spin_dump(raw_spinlock_t *lock, const char *msg)
{
struct task_struct *owner = NULL;
- if (!debug_locks_off())
- return;
-
if (lock->owner && lock->owner != SPINLOCK_OWNER_INIT)
owner = lock->owner;
printk(KERN_EMERG "BUG: spinlock %s on CPU#%d, %s/%d\n",
@@ -70,6 +67,14 @@
dump_stack();
}
+static void spin_bug(raw_spinlock_t *lock, const char *msg)
+{
+ if (!debug_locks_off())
+ return;
+
+ spin_dump(lock, msg);
+}
+
#define SPIN_BUG_ON(cond, lock, msg) if (unlikely(cond)) spin_bug(lock, msg)
static inline void
@@ -113,11 +118,7 @@
/* lockup suspected: */
if (print_once) {
print_once = 0;
- printk(KERN_EMERG "BUG: spinlock lockup on CPU#%d, "
- "%s/%d, %p\n",
- raw_smp_processor_id(), current->comm,
- task_pid_nr(current), lock);
- dump_stack();
+ spin_dump(lock, "lockup");
#ifdef CONFIG_SMP
trigger_all_cpu_backtrace();
#endif
diff --git a/lib/string.c b/lib/string.c
index 01fad9b..dc4a863 100644
--- a/lib/string.c
+++ b/lib/string.c
@@ -360,7 +360,6 @@
size_t size;
char *end;
- s = skip_spaces(s);
size = strlen(s);
if (!size)
return s;
@@ -370,7 +369,7 @@
end--;
*(end + 1) = '\0';
- return s;
+ return skip_spaces(s);
}
EXPORT_SYMBOL(strim);
@@ -756,3 +755,57 @@
}
EXPORT_SYMBOL(memchr);
#endif
+
+static void *check_bytes8(const u8 *start, u8 value, unsigned int bytes)
+{
+ while (bytes) {
+ if (*start != value)
+ return (void *)start;
+ start++;
+ bytes--;
+ }
+ return NULL;
+}
+
+/**
+ * memchr_inv - Find an unmatching character in an area of memory.
+ * @start: The memory area
+ * @c: Find a character other than c
+ * @bytes: The size of the area.
+ *
+ * returns the address of the first character other than @c, or %NULL
+ * if the whole buffer contains just @c.
+ */
+void *memchr_inv(const void *start, int c, size_t bytes)
+{
+ u8 value = c;
+ u64 value64;
+ unsigned int words, prefix;
+
+ if (bytes <= 16)
+ return check_bytes8(start, value, bytes);
+
+ value64 = value | value << 8 | value << 16 | value << 24;
+ value64 = (value64 & 0xffffffff) | value64 << 32;
+ prefix = 8 - ((unsigned long)start) % 8;
+
+ if (prefix) {
+ u8 *r = check_bytes8(start, value, prefix);
+ if (r)
+ return r;
+ start += prefix;
+ bytes -= prefix;
+ }
+
+ words = bytes / 8;
+
+ while (words) {
+ if (*(u64 *)start != value64)
+ return check_bytes8(start, value, 8);
+ start += 8;
+ words--;
+ }
+
+ return check_bytes8(start, value, bytes % 8);
+}
+EXPORT_SYMBOL(memchr_inv);
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index d7222a9..993599e 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -31,17 +31,7 @@
#include <asm/div64.h>
#include <asm/sections.h> /* for dereference_function_descriptor() */
-static unsigned int simple_guess_base(const char *cp)
-{
- if (cp[0] == '0') {
- if (_tolower(cp[1]) == 'x' && isxdigit(cp[2]))
- return 16;
- else
- return 8;
- } else {
- return 10;
- }
-}
+#include "kstrtox.h"
/**
* simple_strtoull - convert a string to an unsigned long long
@@ -51,23 +41,14 @@
*/
unsigned long long simple_strtoull(const char *cp, char **endp, unsigned int base)
{
- unsigned long long result = 0;
+ unsigned long long result;
+ unsigned int rv;
- if (!base)
- base = simple_guess_base(cp);
+ cp = _parse_integer_fixup_radix(cp, &base);
+ rv = _parse_integer(cp, base, &result);
+ /* FIXME */
+ cp += (rv & ~KSTRTOX_OVERFLOW);
- if (base == 16 && cp[0] == '0' && _tolower(cp[1]) == 'x')
- cp += 2;
-
- while (isxdigit(*cp)) {
- unsigned int value;
-
- value = isdigit(*cp) ? *cp - '0' : _tolower(*cp) - 'a' + 10;
- if (value >= base)
- break;
- result = result * base + value;
- cp++;
- }
if (endp)
*endp = (char *)cp;
@@ -566,7 +547,7 @@
}
for (i = 0; i < 6; i++) {
- p = pack_hex_byte(p, addr[i]);
+ p = hex_byte_pack(p, addr[i]);
if (fmt[0] == 'M' && i != 5)
*p++ = separator;
}
@@ -686,13 +667,13 @@
lo = word & 0xff;
if (hi) {
if (hi > 0x0f)
- p = pack_hex_byte(p, hi);
+ p = hex_byte_pack(p, hi);
else
*p++ = hex_asc_lo(hi);
- p = pack_hex_byte(p, lo);
+ p = hex_byte_pack(p, lo);
}
else if (lo > 0x0f)
- p = pack_hex_byte(p, lo);
+ p = hex_byte_pack(p, lo);
else
*p++ = hex_asc_lo(lo);
needcolon = true;
@@ -714,8 +695,8 @@
int i;
for (i = 0; i < 8; i++) {
- p = pack_hex_byte(p, *addr++);
- p = pack_hex_byte(p, *addr++);
+ p = hex_byte_pack(p, *addr++);
+ p = hex_byte_pack(p, *addr++);
if (fmt[0] == 'I' && i != 7)
*p++ = ':';
}
@@ -773,7 +754,7 @@
}
for (i = 0; i < 16; i++) {
- p = pack_hex_byte(p, addr[index[i]]);
+ p = hex_byte_pack(p, addr[index[i]]);
switch (i) {
case 3:
case 5:
diff --git a/mm/Kconfig b/mm/Kconfig
index f2f1ca1..011b110 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -131,6 +131,9 @@
config HAVE_MEMBLOCK
boolean
+config NO_BOOTMEM
+ boolean
+
# eventually, we can have this option just 'select SPARSEMEM'
config MEMORY_HOTPLUG
bool "Allow for memory hot-add"
diff --git a/mm/Makefile b/mm/Makefile
index 836e416..50ec00e 100644
--- a/mm/Makefile
+++ b/mm/Makefile
@@ -5,7 +5,8 @@
mmu-y := nommu.o
mmu-$(CONFIG_MMU) := fremap.o highmem.o madvise.o memory.o mincore.o \
mlock.o mmap.o mprotect.o mremap.o msync.o rmap.o \
- vmalloc.o pagewalk.o pgtable-generic.o
+ vmalloc.o pagewalk.o pgtable-generic.o \
+ process_vm_access.o
obj-y := filemap.o mempool.o oom_kill.o fadvise.o \
maccess.o page_alloc.o page-writeback.o \
diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index a87da52..7520ef0 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -404,9 +404,8 @@
/*
* In the following loop we are going to check whether we have
* some work to do without any synchronization with tasks
- * waking us up to do work for them. So we have to set task
- * state already here so that we don't miss wakeups coming
- * after we verify some condition.
+ * waking us up to do work for them. Set the task state here
+ * so that we don't miss wakeups after verifying conditions.
*/
set_current_state(TASK_INTERRUPTIBLE);
diff --git a/mm/compaction.c b/mm/compaction.c
index 6cc604b..899d956 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -35,10 +35,6 @@
unsigned long migrate_pfn; /* isolate_migratepages search base */
bool sync; /* Synchronous migration */
- /* Account for isolated anon and file pages */
- unsigned long nr_anon;
- unsigned long nr_file;
-
unsigned int order; /* order a direct compactor needs */
int migratetype; /* MOVABLE, RECLAIMABLE etc */
struct zone *zone;
@@ -223,17 +219,13 @@
static void acct_isolated(struct zone *zone, struct compact_control *cc)
{
struct page *page;
- unsigned int count[NR_LRU_LISTS] = { 0, };
+ unsigned int count[2] = { 0, };
- list_for_each_entry(page, &cc->migratepages, lru) {
- int lru = page_lru_base_type(page);
- count[lru]++;
- }
+ list_for_each_entry(page, &cc->migratepages, lru)
+ count[!!page_is_file_cache(page)]++;
- cc->nr_anon = count[LRU_ACTIVE_ANON] + count[LRU_INACTIVE_ANON];
- cc->nr_file = count[LRU_ACTIVE_FILE] + count[LRU_INACTIVE_FILE];
- __mod_zone_page_state(zone, NR_ISOLATED_ANON, cc->nr_anon);
- __mod_zone_page_state(zone, NR_ISOLATED_FILE, cc->nr_file);
+ __mod_zone_page_state(zone, NR_ISOLATED_ANON, count[0]);
+ __mod_zone_page_state(zone, NR_ISOLATED_FILE, count[1]);
}
/* Similar to reclaim, but different enough that they don't share logic */
@@ -269,6 +261,7 @@
unsigned long last_pageblock_nr = 0, pageblock_nr;
unsigned long nr_scanned = 0, nr_isolated = 0;
struct list_head *migratelist = &cc->migratepages;
+ isolate_mode_t mode = ISOLATE_ACTIVE|ISOLATE_INACTIVE;
/* Do not scan outside zone boundaries */
low_pfn = max(cc->migrate_pfn, zone->zone_start_pfn);
@@ -356,8 +349,11 @@
continue;
}
+ if (!cc->sync)
+ mode |= ISOLATE_CLEAN;
+
/* Try isolate the page */
- if (__isolate_lru_page(page, ISOLATE_BOTH, 0) != 0)
+ if (__isolate_lru_page(page, mode, 0) != 0)
continue;
VM_BUG_ON(PageTransCompound(page));
@@ -586,7 +582,7 @@
return ret;
}
-unsigned long compact_zone_order(struct zone *zone,
+static unsigned long compact_zone_order(struct zone *zone,
int order, gfp_t gfp_mask,
bool sync)
{
diff --git a/mm/debug-pagealloc.c b/mm/debug-pagealloc.c
index a1e3324..7cea557 100644
--- a/mm/debug-pagealloc.c
+++ b/mm/debug-pagealloc.c
@@ -1,7 +1,10 @@
#include <linux/kernel.h>
+#include <linux/string.h>
#include <linux/mm.h>
+#include <linux/highmem.h>
#include <linux/page-debug-flags.h>
#include <linux/poison.h>
+#include <linux/ratelimit.h>
static inline void set_page_poison(struct page *page)
{
@@ -18,28 +21,13 @@
return test_bit(PAGE_DEBUG_FLAG_POISON, &page->debug_flags);
}
-static void poison_highpage(struct page *page)
-{
- /*
- * Page poisoning for highmem pages is not implemented.
- *
- * This can be called from interrupt contexts.
- * So we need to create a new kmap_atomic slot for this
- * application and it will need interrupt protection.
- */
-}
-
static void poison_page(struct page *page)
{
- void *addr;
+ void *addr = kmap_atomic(page);
- if (PageHighMem(page)) {
- poison_highpage(page);
- return;
- }
set_page_poison(page);
- addr = page_address(page);
memset(addr, PAGE_POISON, PAGE_SIZE);
+ kunmap_atomic(addr);
}
static void poison_pages(struct page *page, int n)
@@ -59,14 +47,12 @@
static void check_poison_mem(unsigned char *mem, size_t bytes)
{
+ static DEFINE_RATELIMIT_STATE(ratelimit, 5 * HZ, 10);
unsigned char *start;
unsigned char *end;
- for (start = mem; start < mem + bytes; start++) {
- if (*start != PAGE_POISON)
- break;
- }
- if (start == mem + bytes)
+ start = memchr_inv(mem, PAGE_POISON, bytes);
+ if (!start)
return;
for (end = mem + bytes - 1; end > start; end--) {
@@ -74,7 +60,7 @@
break;
}
- if (!printk_ratelimit())
+ if (!__ratelimit(&ratelimit))
return;
else if (start == end && single_bit_flip(*start, PAGE_POISON))
printk(KERN_ERR "pagealloc: single bit error\n");
@@ -86,27 +72,17 @@
dump_stack();
}
-static void unpoison_highpage(struct page *page)
-{
- /*
- * See comment in poison_highpage().
- * Highmem pages should not be poisoned for now
- */
- BUG_ON(page_poison(page));
-}
-
static void unpoison_page(struct page *page)
{
- if (PageHighMem(page)) {
- unpoison_highpage(page);
- return;
- }
- if (page_poison(page)) {
- void *addr = page_address(page);
+ void *addr;
- check_poison_mem(addr, PAGE_SIZE);
- clear_page_poison(page);
- }
+ if (!page_poison(page))
+ return;
+
+ addr = kmap_atomic(page);
+ check_poison_mem(addr, PAGE_SIZE);
+ clear_page_poison(page);
+ kunmap_atomic(addr);
}
static void unpoison_pages(struct page *page, int n)
diff --git a/mm/highmem.c b/mm/highmem.c
index 5ef672c..e159a7b 100644
--- a/mm/highmem.c
+++ b/mm/highmem.c
@@ -250,7 +250,7 @@
#endif
/**
- * kunmap_high - map a highmem page into memory
+ * kunmap_high - unmap a highmem page into memory
* @page: &struct page to unmap
*
* If ARCH_NEEDS_KMAP_HIGH_GET is not defined then this may be called
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index e2d1587..860ec21 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -89,7 +89,8 @@
struct list_head mm_head;
struct mm_slot *mm_slot;
unsigned long address;
-} khugepaged_scan = {
+};
+static struct khugepaged_scan khugepaged_scan = {
.mm_head = LIST_HEAD_INIT(khugepaged_scan.mm_head),
};
@@ -829,7 +830,7 @@
for (i = 0; i < HPAGE_PMD_NR; i++) {
copy_user_highpage(pages[i], page + i,
- haddr + PAGE_SHIFT*i, vma);
+ haddr + PAGE_SIZE * i, vma);
__SetPageUptodate(pages[i]);
cond_resched();
}
@@ -1052,6 +1053,51 @@
return ret;
}
+int move_huge_pmd(struct vm_area_struct *vma, struct vm_area_struct *new_vma,
+ unsigned long old_addr,
+ unsigned long new_addr, unsigned long old_end,
+ pmd_t *old_pmd, pmd_t *new_pmd)
+{
+ int ret = 0;
+ pmd_t pmd;
+
+ struct mm_struct *mm = vma->vm_mm;
+
+ if ((old_addr & ~HPAGE_PMD_MASK) ||
+ (new_addr & ~HPAGE_PMD_MASK) ||
+ old_end - old_addr < HPAGE_PMD_SIZE ||
+ (new_vma->vm_flags & VM_NOHUGEPAGE))
+ goto out;
+
+ /*
+ * The destination pmd shouldn't be established, free_pgtables()
+ * should have release it.
+ */
+ if (WARN_ON(!pmd_none(*new_pmd))) {
+ VM_BUG_ON(pmd_trans_huge(*new_pmd));
+ goto out;
+ }
+
+ spin_lock(&mm->page_table_lock);
+ if (likely(pmd_trans_huge(*old_pmd))) {
+ if (pmd_trans_splitting(*old_pmd)) {
+ spin_unlock(&mm->page_table_lock);
+ wait_split_huge_page(vma->anon_vma, old_pmd);
+ ret = -1;
+ } else {
+ pmd = pmdp_get_and_clear(mm, old_addr, old_pmd);
+ VM_BUG_ON(!pmd_none(*new_pmd));
+ set_pmd_at(mm, new_addr, new_pmd, pmd);
+ spin_unlock(&mm->page_table_lock);
+ ret = 1;
+ }
+ } else {
+ spin_unlock(&mm->page_table_lock);
+ }
+out:
+ return ret;
+}
+
int change_huge_pmd(struct vm_area_struct *vma, pmd_t *pmd,
unsigned long addr, pgprot_t newprot)
{
@@ -1906,7 +1952,7 @@
BUG_ON(!pmd_none(*pmd));
page_add_new_anon_rmap(new_page, vma, address);
set_pmd_at(mm, address, pmd, _pmd);
- update_mmu_cache(vma, address, entry);
+ update_mmu_cache(vma, address, _pmd);
prepare_pmd_huge_pte(pgtable, mm);
mm->nr_ptes--;
spin_unlock(&mm->page_table_lock);
@@ -2024,6 +2070,8 @@
static unsigned int khugepaged_scan_mm_slot(unsigned int pages,
struct page **hpage)
+ __releases(&khugepaged_mm_lock)
+ __acquires(&khugepaged_mm_lock)
{
struct mm_slot *mm_slot;
struct mm_struct *mm;
diff --git a/mm/ksm.c b/mm/ksm.c
index 9a68b0c..310544a 100644
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -1905,7 +1905,8 @@
oom_score_adj = test_set_oom_score_adj(OOM_SCORE_ADJ_MAX);
err = unmerge_and_remove_all_rmap_items();
- test_set_oom_score_adj(oom_score_adj);
+ compare_swap_oom_score_adj(OOM_SCORE_ADJ_MAX,
+ oom_score_adj);
if (err) {
ksm_run = KSM_RUN_STOP;
count = err;
diff --git a/mm/memblock.c b/mm/memblock.c
index ccbf973..84bec49 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -58,7 +58,8 @@
return ((base1 < (base2 + size2)) && (base2 < (base1 + size1)));
}
-long __init_memblock memblock_overlaps_region(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
+static long __init_memblock memblock_overlaps_region(struct memblock_type *type,
+ phys_addr_t base, phys_addr_t size)
{
unsigned long i;
@@ -267,7 +268,7 @@
return 0;
}
-extern int __init_memblock __weak memblock_memory_can_coalesce(phys_addr_t addr1, phys_addr_t size1,
+int __init_memblock __weak memblock_memory_can_coalesce(phys_addr_t addr1, phys_addr_t size1,
phys_addr_t addr2, phys_addr_t size2)
{
return 1;
@@ -626,6 +627,12 @@
return memblock.memory_size;
}
+/* lowest address */
+phys_addr_t __init_memblock memblock_start_of_DRAM(void)
+{
+ return memblock.memory.regions[0].base;
+}
+
phys_addr_t __init_memblock memblock_end_of_DRAM(void)
{
int idx = memblock.memory.cnt - 1;
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 3508777..2d57555 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -1185,7 +1185,8 @@
unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan,
struct list_head *dst,
unsigned long *scanned, int order,
- int mode, struct zone *z,
+ isolate_mode_t mode,
+ struct zone *z,
struct mem_cgroup *mem_cont,
int active, int file)
{
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 2b43ba0..edc388d 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -1310,7 +1310,7 @@
* to the end.
*/
if (PageHuge(page)) {
- pr_debug("MCE: Memory failure is now running on free hugepage %#lx\n", pfn);
+ pr_info("MCE: Memory failure is now running on free hugepage %#lx\n", pfn);
return 0;
}
if (TestClearPageHWPoison(p))
@@ -1419,7 +1419,7 @@
if (PageHWPoison(hpage)) {
put_page(hpage);
- pr_debug("soft offline: %#lx hugepage already poisoned\n", pfn);
+ pr_info("soft offline: %#lx hugepage already poisoned\n", pfn);
return -EBUSY;
}
@@ -1433,8 +1433,8 @@
list_for_each_entry_safe(page1, page2, &pagelist, lru)
put_page(page1);
- pr_debug("soft offline: %#lx: migration failed %d, type %lx\n",
- pfn, ret, page->flags);
+ pr_info("soft offline: %#lx: migration failed %d, type %lx\n",
+ pfn, ret, page->flags);
if (ret > 0)
ret = -EIO;
return ret;
@@ -1505,7 +1505,7 @@
}
if (!PageLRU(page)) {
pr_info("soft_offline: %#lx: unknown non LRU page type %lx\n",
- pfn, page->flags);
+ pfn, page->flags);
return -EIO;
}
@@ -1566,7 +1566,7 @@
}
} else {
pr_info("soft offline: %#lx: isolation failed: %d, page count %d, type %lx\n",
- pfn, ret, page_count(page), page->flags);
+ pfn, ret, page_count(page), page->flags);
}
if (ret)
return ret;
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 9c51f9f..cd237f4 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -111,7 +111,7 @@
/*
* run-time system-wide default policy => local allocation
*/
-struct mempolicy default_policy = {
+static struct mempolicy default_policy = {
.refcnt = ATOMIC_INIT(1), /* never free it */
.mode = MPOL_PREFERRED,
.flags = MPOL_F_LOCAL,
diff --git a/mm/migrate.c b/mm/migrate.c
index 14d0a6a..33358f8 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -621,38 +621,18 @@
return rc;
}
-/*
- * Obtain the lock on page, remove all ptes and migrate the page
- * to the newly allocated page in newpage.
- */
-static int unmap_and_move(new_page_t get_new_page, unsigned long private,
- struct page *page, int force, bool offlining, bool sync)
+static int __unmap_and_move(struct page *page, struct page *newpage,
+ int force, bool offlining, bool sync)
{
- int rc = 0;
- int *result = NULL;
- struct page *newpage = get_new_page(page, private, &result);
+ int rc = -EAGAIN;
int remap_swapcache = 1;
int charge = 0;
struct mem_cgroup *mem;
struct anon_vma *anon_vma = NULL;
- if (!newpage)
- return -ENOMEM;
-
- if (page_count(page) == 1) {
- /* page was freed from under us. So we are done. */
- goto move_newpage;
- }
- if (unlikely(PageTransHuge(page)))
- if (unlikely(split_huge_page(page)))
- goto move_newpage;
-
- /* prepare cgroup just returns 0 or -ENOMEM */
- rc = -EAGAIN;
-
if (!trylock_page(page)) {
if (!force || !sync)
- goto move_newpage;
+ goto out;
/*
* It's not safe for direct compaction to call lock_page.
@@ -668,7 +648,7 @@
* altogether.
*/
if (current->flags & PF_MEMALLOC)
- goto move_newpage;
+ goto out;
lock_page(page);
}
@@ -785,27 +765,52 @@
mem_cgroup_end_migration(mem, page, newpage, rc == 0);
unlock:
unlock_page(page);
+out:
+ return rc;
+}
-move_newpage:
+/*
+ * Obtain the lock on page, remove all ptes and migrate the page
+ * to the newly allocated page in newpage.
+ */
+static int unmap_and_move(new_page_t get_new_page, unsigned long private,
+ struct page *page, int force, bool offlining, bool sync)
+{
+ int rc = 0;
+ int *result = NULL;
+ struct page *newpage = get_new_page(page, private, &result);
+
+ if (!newpage)
+ return -ENOMEM;
+
+ if (page_count(page) == 1) {
+ /* page was freed from under us. So we are done. */
+ goto out;
+ }
+
+ if (unlikely(PageTransHuge(page)))
+ if (unlikely(split_huge_page(page)))
+ goto out;
+
+ rc = __unmap_and_move(page, newpage, force, offlining, sync);
+out:
if (rc != -EAGAIN) {
- /*
- * A page that has been migrated has all references
- * removed and will be freed. A page that has not been
- * migrated will have kepts its references and be
- * restored.
- */
- list_del(&page->lru);
+ /*
+ * A page that has been migrated has all references
+ * removed and will be freed. A page that has not been
+ * migrated will have kepts its references and be
+ * restored.
+ */
+ list_del(&page->lru);
dec_zone_page_state(page, NR_ISOLATED_ANON +
page_is_file_cache(page));
putback_lru_page(page);
}
-
/*
* Move the new page to the LRU. If migration was not successful
* then this will free the page.
*/
putback_lru_page(newpage);
-
if (result) {
if (rc)
*result = rc;
diff --git a/mm/mlock.c b/mm/mlock.c
index 048260c..bd34b3a 100644
--- a/mm/mlock.c
+++ b/mm/mlock.c
@@ -110,7 +110,15 @@
if (TestClearPageMlocked(page)) {
dec_zone_page_state(page, NR_MLOCK);
if (!isolate_lru_page(page)) {
- int ret = try_to_munlock(page);
+ int ret = SWAP_AGAIN;
+
+ /*
+ * Optimization: if the page was mapped just once,
+ * that's our mapping and we don't need to check all the
+ * other vmas.
+ */
+ if (page_mapcount(page) > 1)
+ ret = try_to_munlock(page);
/*
* did try_to_unlock() succeed or punt?
*/
@@ -549,7 +557,8 @@
if (!can_do_mlock())
goto out;
- lru_add_drain_all(); /* flush pagevec */
+ if (flags & MCL_CURRENT)
+ lru_add_drain_all(); /* flush pagevec */
down_write(¤t->mm->mmap_sem);
diff --git a/mm/mmap.c b/mm/mmap.c
index a65efd4..3c0061f 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -2558,7 +2558,6 @@
{
struct vm_area_struct *vma;
struct anon_vma_chain *avc;
- int ret = -EINTR;
BUG_ON(down_read_trylock(&mm->mmap_sem));
@@ -2579,13 +2578,11 @@
vm_lock_anon_vma(mm, avc->anon_vma);
}
- ret = 0;
+ return 0;
out_unlock:
- if (ret)
- mm_drop_all_locks(mm);
-
- return ret;
+ mm_drop_all_locks(mm);
+ return -EINTR;
}
static void vm_unlock_anon_vma(struct anon_vma *anon_vma)
diff --git a/mm/mremap.c b/mm/mremap.c
index 506fa44..d6959cb 100644
--- a/mm/mremap.c
+++ b/mm/mremap.c
@@ -41,8 +41,7 @@
return NULL;
pmd = pmd_offset(pud, addr);
- split_huge_page_pmd(mm, pmd);
- if (pmd_none_or_clear_bad(pmd))
+ if (pmd_none(*pmd))
return NULL;
return pmd;
@@ -65,8 +64,6 @@
return NULL;
VM_BUG_ON(pmd_trans_huge(*pmd));
- if (pmd_none(*pmd) && __pte_alloc(mm, vma, pmd, addr))
- return NULL;
return pmd;
}
@@ -80,11 +77,7 @@
struct mm_struct *mm = vma->vm_mm;
pte_t *old_pte, *new_pte, pte;
spinlock_t *old_ptl, *new_ptl;
- unsigned long old_start;
- old_start = old_addr;
- mmu_notifier_invalidate_range_start(vma->vm_mm,
- old_start, old_end);
if (vma->vm_file) {
/*
* Subtle point from Rajesh Venkatasubramanian: before
@@ -111,7 +104,7 @@
new_pte++, new_addr += PAGE_SIZE) {
if (pte_none(*old_pte))
continue;
- pte = ptep_clear_flush(vma, old_addr, old_pte);
+ pte = ptep_get_and_clear(mm, old_addr, old_pte);
pte = move_pte(pte, new_vma->vm_page_prot, old_addr, new_addr);
set_pte_at(mm, new_addr, new_pte, pte);
}
@@ -123,7 +116,6 @@
pte_unmap_unlock(old_pte - 1, old_ptl);
if (mapping)
mutex_unlock(&mapping->i_mmap_mutex);
- mmu_notifier_invalidate_range_end(vma->vm_mm, old_start, old_end);
}
#define LATENCY_LIMIT (64 * PAGE_SIZE)
@@ -134,22 +126,43 @@
{
unsigned long extent, next, old_end;
pmd_t *old_pmd, *new_pmd;
+ bool need_flush = false;
old_end = old_addr + len;
flush_cache_range(vma, old_addr, old_end);
+ mmu_notifier_invalidate_range_start(vma->vm_mm, old_addr, old_end);
+
for (; old_addr < old_end; old_addr += extent, new_addr += extent) {
cond_resched();
next = (old_addr + PMD_SIZE) & PMD_MASK;
- if (next - 1 > old_end)
- next = old_end;
+ /* even if next overflowed, extent below will be ok */
extent = next - old_addr;
+ if (extent > old_end - old_addr)
+ extent = old_end - old_addr;
old_pmd = get_old_pmd(vma->vm_mm, old_addr);
if (!old_pmd)
continue;
new_pmd = alloc_new_pmd(vma->vm_mm, vma, new_addr);
if (!new_pmd)
break;
+ if (pmd_trans_huge(*old_pmd)) {
+ int err = 0;
+ if (extent == HPAGE_PMD_SIZE)
+ err = move_huge_pmd(vma, new_vma, old_addr,
+ new_addr, old_end,
+ old_pmd, new_pmd);
+ if (err > 0) {
+ need_flush = true;
+ continue;
+ } else if (!err) {
+ split_huge_page_pmd(vma->vm_mm, old_pmd);
+ }
+ VM_BUG_ON(pmd_trans_huge(*old_pmd));
+ }
+ if (pmd_none(*new_pmd) && __pte_alloc(new_vma->vm_mm, new_vma,
+ new_pmd, new_addr))
+ break;
next = (new_addr + PMD_SIZE) & PMD_MASK;
if (extent > next - new_addr)
extent = next - new_addr;
@@ -157,7 +170,12 @@
extent = LATENCY_LIMIT;
move_ptes(vma, old_pmd, old_addr, old_addr + extent,
new_vma, new_pmd, new_addr);
+ need_flush = true;
}
+ if (likely(need_flush))
+ flush_tlb_range(vma, old_end-len, old_addr);
+
+ mmu_notifier_invalidate_range_end(vma->vm_mm, old_end-len, old_end);
return len + old_addr - old_end; /* how much done */
}
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 626303b5..e916168 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -32,12 +32,32 @@
#include <linux/mempolicy.h>
#include <linux/security.h>
#include <linux/ptrace.h>
+#include <linux/freezer.h>
int sysctl_panic_on_oom;
int sysctl_oom_kill_allocating_task;
int sysctl_oom_dump_tasks = 1;
static DEFINE_SPINLOCK(zone_scan_lock);
+/*
+ * compare_swap_oom_score_adj() - compare and swap current's oom_score_adj
+ * @old_val: old oom_score_adj for compare
+ * @new_val: new oom_score_adj for swap
+ *
+ * Sets the oom_score_adj value for current to @new_val iff its present value is
+ * @old_val. Usually used to reinstate a previous value to prevent racing with
+ * userspacing tuning the value in the interim.
+ */
+void compare_swap_oom_score_adj(int old_val, int new_val)
+{
+ struct sighand_struct *sighand = current->sighand;
+
+ spin_lock_irq(&sighand->siglock);
+ if (current->signal->oom_score_adj == old_val)
+ current->signal->oom_score_adj = new_val;
+ spin_unlock_irq(&sighand->siglock);
+}
+
/**
* test_set_oom_score_adj() - set current's oom_score_adj and return old value
* @new_val: new oom_score_adj value
@@ -53,13 +73,7 @@
spin_lock_irq(&sighand->siglock);
old_val = current->signal->oom_score_adj;
- if (new_val != old_val) {
- if (new_val == OOM_SCORE_ADJ_MIN)
- atomic_inc(¤t->mm->oom_disable_count);
- else if (old_val == OOM_SCORE_ADJ_MIN)
- atomic_dec(¤t->mm->oom_disable_count);
- current->signal->oom_score_adj = new_val;
- }
+ current->signal->oom_score_adj = new_val;
spin_unlock_irq(&sighand->siglock);
return old_val;
@@ -172,16 +186,6 @@
return 0;
/*
- * Shortcut check for a thread sharing p->mm that is OOM_SCORE_ADJ_MIN
- * so the entire heuristic doesn't need to be executed for something
- * that cannot be killed.
- */
- if (atomic_read(&p->mm->oom_disable_count)) {
- task_unlock(p);
- return 0;
- }
-
- /*
* The memory controller may have a limit of 0 bytes, so avoid a divide
* by zero, if necessary.
*/
@@ -317,8 +321,11 @@
* blocked waiting for another task which itself is waiting
* for memory. Is there a better alternative?
*/
- if (test_tsk_thread_flag(p, TIF_MEMDIE))
+ if (test_tsk_thread_flag(p, TIF_MEMDIE)) {
+ if (unlikely(frozen(p)))
+ thaw_process(p);
return ERR_PTR(-1UL);
+ }
if (!p->mm)
continue;
@@ -435,7 +442,7 @@
task_unlock(p);
/*
- * Kill all processes sharing p->mm in other thread groups, if any.
+ * Kill all user processes sharing p->mm in other thread groups, if any.
* They don't get access to memory reserves or a higher scheduler
* priority, though, to avoid depletion of all memory or task
* starvation. This prevents mm->mmap_sem livelock when an oom killed
@@ -445,7 +452,11 @@
* signal.
*/
for_each_process(q)
- if (q->mm == mm && !same_thread_group(q, p)) {
+ if (q->mm == mm && !same_thread_group(q, p) &&
+ !(q->flags & PF_KTHREAD)) {
+ if (q->signal->oom_score_adj == OOM_SCORE_ADJ_MIN)
+ continue;
+
task_lock(q); /* Protect ->comm from prctl() */
pr_err("Kill process %d (%s) sharing same memory\n",
task_pid_nr(q), q->comm);
@@ -722,7 +733,7 @@
read_lock(&tasklist_lock);
if (sysctl_oom_kill_allocating_task &&
!oom_unkillable_task(current, NULL, nodemask) &&
- current->mm && !atomic_read(¤t->mm->oom_disable_count)) {
+ current->mm) {
/*
* oom_kill_process() needs tasklist_lock held. If it returns
* non-zero, current could not be killed so we must fallback to
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 0e309cd..793e987 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -305,7 +305,9 @@
}
/*
- *
+ * bdi_min_ratio keeps the sum of the minimum dirty shares of all
+ * registered backing devices, which, for obvious reasons, can not
+ * exceed 100%.
*/
static unsigned int bdi_min_ratio;
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 6e8ecb6..9dd443d 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -318,6 +318,7 @@
current->comm, page_to_pfn(page));
dump_page(page);
+ print_modules();
dump_stack();
out:
/* Leave bad fields for debug, except PageBuddy could make trouble */
@@ -1753,7 +1754,6 @@
void warn_alloc_failed(gfp_t gfp_mask, int order, const char *fmt, ...)
{
- va_list args;
unsigned int filter = SHOW_MEM_FILTER_NODES;
if ((gfp_mask & __GFP_NOWARN) || !__ratelimit(&nopage_rs))
@@ -1772,14 +1772,21 @@
filter &= ~SHOW_MEM_FILTER_NODES;
if (fmt) {
- printk(KERN_WARNING);
+ struct va_format vaf;
+ va_list args;
+
va_start(args, fmt);
- vprintk(fmt, args);
+
+ vaf.fmt = fmt;
+ vaf.va = &args;
+
+ pr_warn("%pV", &vaf);
+
va_end(args);
}
- pr_warning("%s: page allocation failure: order:%d, mode:0x%x\n",
- current->comm, order, gfp_mask);
+ pr_warn("%s: page allocation failure: order:%d, mode:0x%x\n",
+ current->comm, order, gfp_mask);
dump_stack();
if (!should_suppress_show_mem())
diff --git a/mm/process_vm_access.c b/mm/process_vm_access.c
new file mode 100644
index 0000000..e920aa3
--- /dev/null
+++ b/mm/process_vm_access.c
@@ -0,0 +1,496 @@
+/*
+ * linux/mm/process_vm_access.c
+ *
+ * Copyright (C) 2010-2011 Christopher Yeoh <cyeoh@au1.ibm.com>, IBM Corp.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/mm.h>
+#include <linux/uio.h>
+#include <linux/sched.h>
+#include <linux/highmem.h>
+#include <linux/ptrace.h>
+#include <linux/slab.h>
+#include <linux/syscalls.h>
+
+#ifdef CONFIG_COMPAT
+#include <linux/compat.h>
+#endif
+
+/**
+ * process_vm_rw_pages - read/write pages from task specified
+ * @task: task to read/write from
+ * @mm: mm for task
+ * @process_pages: struct pages area that can store at least
+ * nr_pages_to_copy struct page pointers
+ * @pa: address of page in task to start copying from/to
+ * @start_offset: offset in page to start copying from/to
+ * @len: number of bytes to copy
+ * @lvec: iovec array specifying where to copy to/from
+ * @lvec_cnt: number of elements in iovec array
+ * @lvec_current: index in iovec array we are up to
+ * @lvec_offset: offset in bytes from current iovec iov_base we are up to
+ * @vm_write: 0 means copy from, 1 means copy to
+ * @nr_pages_to_copy: number of pages to copy
+ * @bytes_copied: returns number of bytes successfully copied
+ * Returns 0 on success, error code otherwise
+ */
+static int process_vm_rw_pages(struct task_struct *task,
+ struct mm_struct *mm,
+ struct page **process_pages,
+ unsigned long pa,
+ unsigned long start_offset,
+ unsigned long len,
+ const struct iovec *lvec,
+ unsigned long lvec_cnt,
+ unsigned long *lvec_current,
+ size_t *lvec_offset,
+ int vm_write,
+ unsigned int nr_pages_to_copy,
+ ssize_t *bytes_copied)
+{
+ int pages_pinned;
+ void *target_kaddr;
+ int pgs_copied = 0;
+ int j;
+ int ret;
+ ssize_t bytes_to_copy;
+ ssize_t rc = 0;
+
+ *bytes_copied = 0;
+
+ /* Get the pages we're interested in */
+ down_read(&mm->mmap_sem);
+ pages_pinned = get_user_pages(task, mm, pa,
+ nr_pages_to_copy,
+ vm_write, 0, process_pages, NULL);
+ up_read(&mm->mmap_sem);
+
+ if (pages_pinned != nr_pages_to_copy) {
+ rc = -EFAULT;
+ goto end;
+ }
+
+ /* Do the copy for each page */
+ for (pgs_copied = 0;
+ (pgs_copied < nr_pages_to_copy) && (*lvec_current < lvec_cnt);
+ pgs_copied++) {
+ /* Make sure we have a non zero length iovec */
+ while (*lvec_current < lvec_cnt
+ && lvec[*lvec_current].iov_len == 0)
+ (*lvec_current)++;
+ if (*lvec_current == lvec_cnt)
+ break;
+
+ /*
+ * Will copy smallest of:
+ * - bytes remaining in page
+ * - bytes remaining in destination iovec
+ */
+ bytes_to_copy = min_t(ssize_t, PAGE_SIZE - start_offset,
+ len - *bytes_copied);
+ bytes_to_copy = min_t(ssize_t, bytes_to_copy,
+ lvec[*lvec_current].iov_len
+ - *lvec_offset);
+
+ target_kaddr = kmap(process_pages[pgs_copied]) + start_offset;
+
+ if (vm_write)
+ ret = copy_from_user(target_kaddr,
+ lvec[*lvec_current].iov_base
+ + *lvec_offset,
+ bytes_to_copy);
+ else
+ ret = copy_to_user(lvec[*lvec_current].iov_base
+ + *lvec_offset,
+ target_kaddr, bytes_to_copy);
+ kunmap(process_pages[pgs_copied]);
+ if (ret) {
+ *bytes_copied += bytes_to_copy - ret;
+ pgs_copied++;
+ rc = -EFAULT;
+ goto end;
+ }
+ *bytes_copied += bytes_to_copy;
+ *lvec_offset += bytes_to_copy;
+ if (*lvec_offset == lvec[*lvec_current].iov_len) {
+ /*
+ * Need to copy remaining part of page into the
+ * next iovec if there are any bytes left in page
+ */
+ (*lvec_current)++;
+ *lvec_offset = 0;
+ start_offset = (start_offset + bytes_to_copy)
+ % PAGE_SIZE;
+ if (start_offset)
+ pgs_copied--;
+ } else {
+ start_offset = 0;
+ }
+ }
+
+end:
+ if (vm_write) {
+ for (j = 0; j < pages_pinned; j++) {
+ if (j < pgs_copied)
+ set_page_dirty_lock(process_pages[j]);
+ put_page(process_pages[j]);
+ }
+ } else {
+ for (j = 0; j < pages_pinned; j++)
+ put_page(process_pages[j]);
+ }
+
+ return rc;
+}
+
+/* Maximum number of pages kmalloc'd to hold struct page's during copy */
+#define PVM_MAX_KMALLOC_PAGES (PAGE_SIZE * 2)
+
+/**
+ * process_vm_rw_single_vec - read/write pages from task specified
+ * @addr: start memory address of target process
+ * @len: size of area to copy to/from
+ * @lvec: iovec array specifying where to copy to/from locally
+ * @lvec_cnt: number of elements in iovec array
+ * @lvec_current: index in iovec array we are up to
+ * @lvec_offset: offset in bytes from current iovec iov_base we are up to
+ * @process_pages: struct pages area that can store at least
+ * nr_pages_to_copy struct page pointers
+ * @mm: mm for task
+ * @task: task to read/write from
+ * @vm_write: 0 means copy from, 1 means copy to
+ * @bytes_copied: returns number of bytes successfully copied
+ * Returns 0 on success or on failure error code
+ */
+static int process_vm_rw_single_vec(unsigned long addr,
+ unsigned long len,
+ const struct iovec *lvec,
+ unsigned long lvec_cnt,
+ unsigned long *lvec_current,
+ size_t *lvec_offset,
+ struct page **process_pages,
+ struct mm_struct *mm,
+ struct task_struct *task,
+ int vm_write,
+ ssize_t *bytes_copied)
+{
+ unsigned long pa = addr & PAGE_MASK;
+ unsigned long start_offset = addr - pa;
+ unsigned long nr_pages;
+ ssize_t bytes_copied_loop;
+ ssize_t rc = 0;
+ unsigned long nr_pages_copied = 0;
+ unsigned long nr_pages_to_copy;
+ unsigned long max_pages_per_loop = PVM_MAX_KMALLOC_PAGES
+ / sizeof(struct pages *);
+
+ *bytes_copied = 0;
+
+ /* Work out address and page range required */
+ if (len == 0)
+ return 0;
+ nr_pages = (addr + len - 1) / PAGE_SIZE - addr / PAGE_SIZE + 1;
+
+ while ((nr_pages_copied < nr_pages) && (*lvec_current < lvec_cnt)) {
+ nr_pages_to_copy = min(nr_pages - nr_pages_copied,
+ max_pages_per_loop);
+
+ rc = process_vm_rw_pages(task, mm, process_pages, pa,
+ start_offset, len,
+ lvec, lvec_cnt,
+ lvec_current, lvec_offset,
+ vm_write, nr_pages_to_copy,
+ &bytes_copied_loop);
+ start_offset = 0;
+ *bytes_copied += bytes_copied_loop;
+
+ if (rc < 0) {
+ return rc;
+ } else {
+ len -= bytes_copied_loop;
+ nr_pages_copied += nr_pages_to_copy;
+ pa += nr_pages_to_copy * PAGE_SIZE;
+ }
+ }
+
+ return rc;
+}
+
+/* Maximum number of entries for process pages array
+ which lives on stack */
+#define PVM_MAX_PP_ARRAY_COUNT 16
+
+/**
+ * process_vm_rw_core - core of reading/writing pages from task specified
+ * @pid: PID of process to read/write from/to
+ * @lvec: iovec array specifying where to copy to/from locally
+ * @liovcnt: size of lvec array
+ * @rvec: iovec array specifying where to copy to/from in the other process
+ * @riovcnt: size of rvec array
+ * @flags: currently unused
+ * @vm_write: 0 if reading from other process, 1 if writing to other process
+ * Returns the number of bytes read/written or error code. May
+ * return less bytes than expected if an error occurs during the copying
+ * process.
+ */
+static ssize_t process_vm_rw_core(pid_t pid, const struct iovec *lvec,
+ unsigned long liovcnt,
+ const struct iovec *rvec,
+ unsigned long riovcnt,
+ unsigned long flags, int vm_write)
+{
+ struct task_struct *task;
+ struct page *pp_stack[PVM_MAX_PP_ARRAY_COUNT];
+ struct page **process_pages = pp_stack;
+ struct mm_struct *mm;
+ unsigned long i;
+ ssize_t rc = 0;
+ ssize_t bytes_copied_loop;
+ ssize_t bytes_copied = 0;
+ unsigned long nr_pages = 0;
+ unsigned long nr_pages_iov;
+ unsigned long iov_l_curr_idx = 0;
+ size_t iov_l_curr_offset = 0;
+ ssize_t iov_len;
+
+ /*
+ * Work out how many pages of struct pages we're going to need
+ * when eventually calling get_user_pages
+ */
+ for (i = 0; i < riovcnt; i++) {
+ iov_len = rvec[i].iov_len;
+ if (iov_len > 0) {
+ nr_pages_iov = ((unsigned long)rvec[i].iov_base
+ + iov_len)
+ / PAGE_SIZE - (unsigned long)rvec[i].iov_base
+ / PAGE_SIZE + 1;
+ nr_pages = max(nr_pages, nr_pages_iov);
+ }
+ }
+
+ if (nr_pages == 0)
+ return 0;
+
+ if (nr_pages > PVM_MAX_PP_ARRAY_COUNT) {
+ /* For reliability don't try to kmalloc more than
+ 2 pages worth */
+ process_pages = kmalloc(min_t(size_t, PVM_MAX_KMALLOC_PAGES,
+ sizeof(struct pages *)*nr_pages),
+ GFP_KERNEL);
+
+ if (!process_pages)
+ return -ENOMEM;
+ }
+
+ /* Get process information */
+ rcu_read_lock();
+ task = find_task_by_vpid(pid);
+ if (task)
+ get_task_struct(task);
+ rcu_read_unlock();
+ if (!task) {
+ rc = -ESRCH;
+ goto free_proc_pages;
+ }
+
+ task_lock(task);
+ if (__ptrace_may_access(task, PTRACE_MODE_ATTACH)) {
+ task_unlock(task);
+ rc = -EPERM;
+ goto put_task_struct;
+ }
+ mm = task->mm;
+
+ if (!mm || (task->flags & PF_KTHREAD)) {
+ task_unlock(task);
+ rc = -EINVAL;
+ goto put_task_struct;
+ }
+
+ atomic_inc(&mm->mm_users);
+ task_unlock(task);
+
+ for (i = 0; i < riovcnt && iov_l_curr_idx < liovcnt; i++) {
+ rc = process_vm_rw_single_vec(
+ (unsigned long)rvec[i].iov_base, rvec[i].iov_len,
+ lvec, liovcnt, &iov_l_curr_idx, &iov_l_curr_offset,
+ process_pages, mm, task, vm_write, &bytes_copied_loop);
+ bytes_copied += bytes_copied_loop;
+ if (rc != 0) {
+ /* If we have managed to copy any data at all then
+ we return the number of bytes copied. Otherwise
+ we return the error code */
+ if (bytes_copied)
+ rc = bytes_copied;
+ goto put_mm;
+ }
+ }
+
+ rc = bytes_copied;
+put_mm:
+ mmput(mm);
+
+put_task_struct:
+ put_task_struct(task);
+
+free_proc_pages:
+ if (process_pages != pp_stack)
+ kfree(process_pages);
+ return rc;
+}
+
+/**
+ * process_vm_rw - check iovecs before calling core routine
+ * @pid: PID of process to read/write from/to
+ * @lvec: iovec array specifying where to copy to/from locally
+ * @liovcnt: size of lvec array
+ * @rvec: iovec array specifying where to copy to/from in the other process
+ * @riovcnt: size of rvec array
+ * @flags: currently unused
+ * @vm_write: 0 if reading from other process, 1 if writing to other process
+ * Returns the number of bytes read/written or error code. May
+ * return less bytes than expected if an error occurs during the copying
+ * process.
+ */
+static ssize_t process_vm_rw(pid_t pid,
+ const struct iovec __user *lvec,
+ unsigned long liovcnt,
+ const struct iovec __user *rvec,
+ unsigned long riovcnt,
+ unsigned long flags, int vm_write)
+{
+ struct iovec iovstack_l[UIO_FASTIOV];
+ struct iovec iovstack_r[UIO_FASTIOV];
+ struct iovec *iov_l = iovstack_l;
+ struct iovec *iov_r = iovstack_r;
+ ssize_t rc;
+
+ if (flags != 0)
+ return -EINVAL;
+
+ /* Check iovecs */
+ if (vm_write)
+ rc = rw_copy_check_uvector(WRITE, lvec, liovcnt, UIO_FASTIOV,
+ iovstack_l, &iov_l, 1);
+ else
+ rc = rw_copy_check_uvector(READ, lvec, liovcnt, UIO_FASTIOV,
+ iovstack_l, &iov_l, 1);
+ if (rc <= 0)
+ goto free_iovecs;
+
+ rc = rw_copy_check_uvector(READ, rvec, riovcnt, UIO_FASTIOV,
+ iovstack_r, &iov_r, 0);
+ if (rc <= 0)
+ goto free_iovecs;
+
+ rc = process_vm_rw_core(pid, iov_l, liovcnt, iov_r, riovcnt, flags,
+ vm_write);
+
+free_iovecs:
+ if (iov_r != iovstack_r)
+ kfree(iov_r);
+ if (iov_l != iovstack_l)
+ kfree(iov_l);
+
+ return rc;
+}
+
+SYSCALL_DEFINE6(process_vm_readv, pid_t, pid, const struct iovec __user *, lvec,
+ unsigned long, liovcnt, const struct iovec __user *, rvec,
+ unsigned long, riovcnt, unsigned long, flags)
+{
+ return process_vm_rw(pid, lvec, liovcnt, rvec, riovcnt, flags, 0);
+}
+
+SYSCALL_DEFINE6(process_vm_writev, pid_t, pid,
+ const struct iovec __user *, lvec,
+ unsigned long, liovcnt, const struct iovec __user *, rvec,
+ unsigned long, riovcnt, unsigned long, flags)
+{
+ return process_vm_rw(pid, lvec, liovcnt, rvec, riovcnt, flags, 1);
+}
+
+#ifdef CONFIG_COMPAT
+
+asmlinkage ssize_t
+compat_process_vm_rw(compat_pid_t pid,
+ const struct compat_iovec __user *lvec,
+ unsigned long liovcnt,
+ const struct compat_iovec __user *rvec,
+ unsigned long riovcnt,
+ unsigned long flags, int vm_write)
+{
+ struct iovec iovstack_l[UIO_FASTIOV];
+ struct iovec iovstack_r[UIO_FASTIOV];
+ struct iovec *iov_l = iovstack_l;
+ struct iovec *iov_r = iovstack_r;
+ ssize_t rc = -EFAULT;
+
+ if (flags != 0)
+ return -EINVAL;
+
+ if (!access_ok(VERIFY_READ, lvec, liovcnt * sizeof(*lvec)))
+ goto out;
+
+ if (!access_ok(VERIFY_READ, rvec, riovcnt * sizeof(*rvec)))
+ goto out;
+
+ if (vm_write)
+ rc = compat_rw_copy_check_uvector(WRITE, lvec, liovcnt,
+ UIO_FASTIOV, iovstack_l,
+ &iov_l, 1);
+ else
+ rc = compat_rw_copy_check_uvector(READ, lvec, liovcnt,
+ UIO_FASTIOV, iovstack_l,
+ &iov_l, 1);
+ if (rc <= 0)
+ goto free_iovecs;
+ rc = compat_rw_copy_check_uvector(READ, rvec, riovcnt,
+ UIO_FASTIOV, iovstack_r,
+ &iov_r, 0);
+ if (rc <= 0)
+ goto free_iovecs;
+
+ rc = process_vm_rw_core(pid, iov_l, liovcnt, iov_r, riovcnt, flags,
+ vm_write);
+
+free_iovecs:
+ if (iov_r != iovstack_r)
+ kfree(iov_r);
+ if (iov_l != iovstack_l)
+ kfree(iov_l);
+
+out:
+ return rc;
+}
+
+asmlinkage ssize_t
+compat_sys_process_vm_readv(compat_pid_t pid,
+ const struct compat_iovec __user *lvec,
+ unsigned long liovcnt,
+ const struct compat_iovec __user *rvec,
+ unsigned long riovcnt,
+ unsigned long flags)
+{
+ return compat_process_vm_rw(pid, lvec, liovcnt, rvec,
+ riovcnt, flags, 0);
+}
+
+asmlinkage ssize_t
+compat_sys_process_vm_writev(compat_pid_t pid,
+ const struct compat_iovec __user *lvec,
+ unsigned long liovcnt,
+ const struct compat_iovec __user *rvec,
+ unsigned long riovcnt,
+ unsigned long flags)
+{
+ return compat_process_vm_rw(pid, lvec, liovcnt, rvec,
+ riovcnt, flags, 1);
+}
+
+#endif
diff --git a/mm/rmap.c b/mm/rmap.c
index 8005080..6541cf7 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -1164,7 +1164,7 @@
/*
* Subfunctions of try_to_unmap: try_to_unmap_one called
- * repeatedly from either try_to_unmap_anon or try_to_unmap_file.
+ * repeatedly from try_to_unmap_ksm, try_to_unmap_anon or try_to_unmap_file.
*/
int try_to_unmap_one(struct page *page, struct vm_area_struct *vma,
unsigned long address, enum ttu_flags flags)
diff --git a/mm/shmem.c b/mm/shmem.c
index 2d35772..fa4fa6c 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -1068,6 +1068,12 @@
user_shm_unlock(inode->i_size, user);
info->flags &= ~VM_LOCKED;
mapping_clear_unevictable(file->f_mapping);
+ /*
+ * Ensure that a racing putback_lru_page() can see
+ * the pages of this mapping are evictable when we
+ * skip them due to !PageLRU during the scan.
+ */
+ smp_mb__after_clear_bit();
scan_mapping_unevictable_pages(file->f_mapping);
}
retval = 0;
diff --git a/mm/slub.c b/mm/slub.c
index 95215aa..7d2a996 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -655,49 +655,6 @@
memset(p + s->objsize, val, s->inuse - s->objsize);
}
-static u8 *check_bytes8(u8 *start, u8 value, unsigned int bytes)
-{
- while (bytes) {
- if (*start != value)
- return start;
- start++;
- bytes--;
- }
- return NULL;
-}
-
-static u8 *check_bytes(u8 *start, u8 value, unsigned int bytes)
-{
- u64 value64;
- unsigned int words, prefix;
-
- if (bytes <= 16)
- return check_bytes8(start, value, bytes);
-
- value64 = value | value << 8 | value << 16 | value << 24;
- value64 = (value64 & 0xffffffff) | value64 << 32;
- prefix = 8 - ((unsigned long)start) % 8;
-
- if (prefix) {
- u8 *r = check_bytes8(start, value, prefix);
- if (r)
- return r;
- start += prefix;
- bytes -= prefix;
- }
-
- words = bytes / 8;
-
- while (words) {
- if (*(u64 *)start != value64)
- return check_bytes8(start, value, 8);
- start += 8;
- words--;
- }
-
- return check_bytes8(start, value, bytes % 8);
-}
-
static void restore_bytes(struct kmem_cache *s, char *message, u8 data,
void *from, void *to)
{
@@ -712,7 +669,7 @@
u8 *fault;
u8 *end;
- fault = check_bytes(start, value, bytes);
+ fault = memchr_inv(start, value, bytes);
if (!fault)
return 1;
@@ -805,7 +762,7 @@
if (!remainder)
return 1;
- fault = check_bytes(end - remainder, POISON_INUSE, remainder);
+ fault = memchr_inv(end - remainder, POISON_INUSE, remainder);
if (!fault)
return 1;
while (end > fault && end[-1] == POISON_INUSE)
diff --git a/mm/swapfile.c b/mm/swapfile.c
index 17bc224..c9d6540 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -1617,7 +1617,7 @@
oom_score_adj = test_set_oom_score_adj(OOM_SCORE_ADJ_MAX);
err = try_to_unuse(type);
- test_set_oom_score_adj(oom_score_adj);
+ compare_swap_oom_score_adj(OOM_SCORE_ADJ_MAX, oom_score_adj);
if (err) {
/*
diff --git a/mm/thrash.c b/mm/thrash.c
index e53f7d0..57ad495 100644
--- a/mm/thrash.c
+++ b/mm/thrash.c
@@ -29,7 +29,7 @@
static DEFINE_SPINLOCK(swap_token_lock);
struct mm_struct *swap_token_mm;
-struct mem_cgroup *swap_token_memcg;
+static struct mem_cgroup *swap_token_memcg;
#ifdef CONFIG_CGROUP_MEM_RES_CTLR
static struct mem_cgroup *swap_token_memcg_from_mm(struct mm_struct *mm)
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 5016f19..b669aa6 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -1253,18 +1253,22 @@
DEFINE_RWLOCK(vmlist_lock);
struct vm_struct *vmlist;
-static void insert_vmalloc_vm(struct vm_struct *vm, struct vmap_area *va,
+static void setup_vmalloc_vm(struct vm_struct *vm, struct vmap_area *va,
unsigned long flags, void *caller)
{
- struct vm_struct *tmp, **p;
-
vm->flags = flags;
vm->addr = (void *)va->va_start;
vm->size = va->va_end - va->va_start;
vm->caller = caller;
va->private = vm;
va->flags |= VM_VM_AREA;
+}
+static void insert_vmalloc_vmlist(struct vm_struct *vm)
+{
+ struct vm_struct *tmp, **p;
+
+ vm->flags &= ~VM_UNLIST;
write_lock(&vmlist_lock);
for (p = &vmlist; (tmp = *p) != NULL; p = &tmp->next) {
if (tmp->addr >= vm->addr)
@@ -1275,6 +1279,13 @@
write_unlock(&vmlist_lock);
}
+static void insert_vmalloc_vm(struct vm_struct *vm, struct vmap_area *va,
+ unsigned long flags, void *caller)
+{
+ setup_vmalloc_vm(vm, va, flags, caller);
+ insert_vmalloc_vmlist(vm);
+}
+
static struct vm_struct *__get_vm_area_node(unsigned long size,
unsigned long align, unsigned long flags, unsigned long start,
unsigned long end, int node, gfp_t gfp_mask, void *caller)
@@ -1313,7 +1324,18 @@
return NULL;
}
- insert_vmalloc_vm(area, va, flags, caller);
+ /*
+ * When this function is called from __vmalloc_node_range,
+ * we do not add vm_struct to vmlist here to avoid
+ * accessing uninitialized members of vm_struct such as
+ * pages and nr_pages fields. They will be set later.
+ * To distinguish it from others, we use a VM_UNLIST flag.
+ */
+ if (flags & VM_UNLIST)
+ setup_vmalloc_vm(area, va, flags, caller);
+ else
+ insert_vmalloc_vm(area, va, flags, caller);
+
return area;
}
@@ -1381,17 +1403,20 @@
va = find_vmap_area((unsigned long)addr);
if (va && va->flags & VM_VM_AREA) {
struct vm_struct *vm = va->private;
- struct vm_struct *tmp, **p;
- /*
- * remove from list and disallow access to this vm_struct
- * before unmap. (address range confliction is maintained by
- * vmap.)
- */
- write_lock(&vmlist_lock);
- for (p = &vmlist; (tmp = *p) != vm; p = &tmp->next)
- ;
- *p = tmp->next;
- write_unlock(&vmlist_lock);
+
+ if (!(vm->flags & VM_UNLIST)) {
+ struct vm_struct *tmp, **p;
+ /*
+ * remove from list and disallow access to
+ * this vm_struct before unmap. (address range
+ * confliction is maintained by vmap.)
+ */
+ write_lock(&vmlist_lock);
+ for (p = &vmlist; (tmp = *p) != vm; p = &tmp->next)
+ ;
+ *p = tmp->next;
+ write_unlock(&vmlist_lock);
+ }
vmap_debug_free_range(va->va_start, va->va_end);
free_unmap_vmap_area(va);
@@ -1568,8 +1593,8 @@
return area->addr;
fail:
- warn_alloc_failed(gfp_mask, order, "vmalloc: allocation failure, "
- "allocated %ld of %ld bytes\n",
+ warn_alloc_failed(gfp_mask, order,
+ "vmalloc: allocation failure, allocated %ld of %ld bytes\n",
(area->nr_pages*PAGE_SIZE), area->size);
vfree(area->addr);
return NULL;
@@ -1600,17 +1625,22 @@
size = PAGE_ALIGN(size);
if (!size || (size >> PAGE_SHIFT) > totalram_pages)
- return NULL;
+ goto fail;
- area = __get_vm_area_node(size, align, VM_ALLOC, start, end, node,
- gfp_mask, caller);
-
+ area = __get_vm_area_node(size, align, VM_ALLOC | VM_UNLIST,
+ start, end, node, gfp_mask, caller);
if (!area)
- return NULL;
+ goto fail;
addr = __vmalloc_area_node(area, gfp_mask, prot, node, caller);
/*
+ * In this function, newly allocated vm_struct is not added
+ * to vmlist at __get_vm_area_node(). so, it is added here.
+ */
+ insert_vmalloc_vmlist(area);
+
+ /*
* A ref_count = 3 is needed because the vm_struct and vmap_area
* structures allocated in the __get_vm_area_node() function contain
* references to the virtual address of the vmalloc'ed block.
@@ -1618,6 +1648,12 @@
kmemleak_alloc(addr, real_size, 3, gfp_mask);
return addr;
+
+fail:
+ warn_alloc_failed(gfp_mask, 0,
+ "vmalloc: allocation failure: %lu bytes\n",
+ real_size);
+ return NULL;
}
/**
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 9fdfce7..a90c603 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -495,15 +495,6 @@
return PAGE_ACTIVATE;
}
- /*
- * Wait on writeback if requested to. This happens when
- * direct reclaiming a large contiguous area and the
- * first attempt to free a range of pages fails.
- */
- if (PageWriteback(page) &&
- (sc->reclaim_mode & RECLAIM_MODE_SYNC))
- wait_on_page_writeback(page);
-
if (!PageWriteback(page)) {
/* synchronous write or broken a_ops? */
ClearPageReclaim(page);
@@ -642,13 +633,14 @@
lru = LRU_UNEVICTABLE;
add_page_to_unevictable_list(page);
/*
- * When racing with an mlock clearing (page is
- * unlocked), make sure that if the other thread does
- * not observe our setting of PG_lru and fails
- * isolation, we see PG_mlocked cleared below and move
+ * When racing with an mlock or AS_UNEVICTABLE clearing
+ * (page is unlocked) make sure that if the other thread
+ * does not observe our setting of PG_lru and fails
+ * isolation/check_move_unevictable_page,
+ * we see PG_mlocked/AS_UNEVICTABLE cleared below and move
* the page back to the evictable list.
*
- * The other side is TestClearPageMlocked().
+ * The other side is TestClearPageMlocked() or shmem_lock().
*/
smp_mb();
}
@@ -759,7 +751,10 @@
*/
static unsigned long shrink_page_list(struct list_head *page_list,
struct zone *zone,
- struct scan_control *sc)
+ struct scan_control *sc,
+ int priority,
+ unsigned long *ret_nr_dirty,
+ unsigned long *ret_nr_writeback)
{
LIST_HEAD(ret_pages);
LIST_HEAD(free_pages);
@@ -767,6 +762,7 @@
unsigned long nr_dirty = 0;
unsigned long nr_congested = 0;
unsigned long nr_reclaimed = 0;
+ unsigned long nr_writeback = 0;
cond_resched();
@@ -803,13 +799,12 @@
(PageSwapCache(page) && (sc->gfp_mask & __GFP_IO));
if (PageWriteback(page)) {
+ nr_writeback++;
/*
- * Synchronous reclaim is performed in two passes,
- * first an asynchronous pass over the list to
- * start parallel writeback, and a second synchronous
- * pass to wait for the IO to complete. Wait here
- * for any page for which writeback has already
- * started.
+ * Synchronous reclaim cannot queue pages for
+ * writeback due to the possibility of stack overflow
+ * but if it encounters a page under writeback, wait
+ * for the IO to complete.
*/
if ((sc->reclaim_mode & RECLAIM_MODE_SYNC) &&
may_enter_fs)
@@ -865,6 +860,25 @@
if (PageDirty(page)) {
nr_dirty++;
+ /*
+ * Only kswapd can writeback filesystem pages to
+ * avoid risk of stack overflow but do not writeback
+ * unless under significant pressure.
+ */
+ if (page_is_file_cache(page) &&
+ (!current_is_kswapd() || priority >= DEF_PRIORITY - 2)) {
+ /*
+ * Immediately reclaim when written back.
+ * Similar in principal to deactivate_page()
+ * except we already have the page isolated
+ * and know it's dirty
+ */
+ inc_zone_page_state(page, NR_VMSCAN_IMMEDIATE);
+ SetPageReclaim(page);
+
+ goto keep_locked;
+ }
+
if (references == PAGEREF_RECLAIM_CLEAN)
goto keep_locked;
if (!may_enter_fs)
@@ -999,6 +1013,8 @@
list_splice(&ret_pages, page_list);
count_vm_events(PGACTIVATE, pgactivate);
+ *ret_nr_dirty += nr_dirty;
+ *ret_nr_writeback += nr_writeback;
return nr_reclaimed;
}
@@ -1012,23 +1028,27 @@
*
* returns 0 on success, -ve errno on failure.
*/
-int __isolate_lru_page(struct page *page, int mode, int file)
+int __isolate_lru_page(struct page *page, isolate_mode_t mode, int file)
{
+ bool all_lru_mode;
int ret = -EINVAL;
/* Only take pages on the LRU. */
if (!PageLRU(page))
return ret;
+ all_lru_mode = (mode & (ISOLATE_ACTIVE|ISOLATE_INACTIVE)) ==
+ (ISOLATE_ACTIVE|ISOLATE_INACTIVE);
+
/*
* When checking the active state, we need to be sure we are
* dealing with comparible boolean values. Take the logical not
* of each.
*/
- if (mode != ISOLATE_BOTH && (!PageActive(page) != !mode))
+ if (!all_lru_mode && !PageActive(page) != !(mode & ISOLATE_ACTIVE))
return ret;
- if (mode != ISOLATE_BOTH && page_is_file_cache(page) != file)
+ if (!all_lru_mode && !!page_is_file_cache(page) != file)
return ret;
/*
@@ -1041,6 +1061,12 @@
ret = -EBUSY;
+ if ((mode & ISOLATE_CLEAN) && (PageDirty(page) || PageWriteback(page)))
+ return ret;
+
+ if ((mode & ISOLATE_UNMAPPED) && page_mapped(page))
+ return ret;
+
if (likely(get_page_unless_zero(page))) {
/*
* Be careful not to clear PageLRU until after we're
@@ -1076,7 +1102,8 @@
*/
static unsigned long isolate_lru_pages(unsigned long nr_to_scan,
struct list_head *src, struct list_head *dst,
- unsigned long *scanned, int order, int mode, int file)
+ unsigned long *scanned, int order, isolate_mode_t mode,
+ int file)
{
unsigned long nr_taken = 0;
unsigned long nr_lumpy_taken = 0;
@@ -1201,8 +1228,8 @@
static unsigned long isolate_pages_global(unsigned long nr,
struct list_head *dst,
unsigned long *scanned, int order,
- int mode, struct zone *z,
- int active, int file)
+ isolate_mode_t mode,
+ struct zone *z, int active, int file)
{
int lru = LRU_BASE;
if (active)
@@ -1394,7 +1421,7 @@
}
/*
- * Returns true if the caller should wait to clean dirty/writeback pages.
+ * Returns true if a direct reclaim should wait on pages under writeback.
*
* If we are direct reclaiming for contiguous pages and we do not reclaim
* everything in the list, try again and wait for writeback IO to complete.
@@ -1448,6 +1475,9 @@
unsigned long nr_taken;
unsigned long nr_anon;
unsigned long nr_file;
+ unsigned long nr_dirty = 0;
+ unsigned long nr_writeback = 0;
+ isolate_mode_t reclaim_mode = ISOLATE_INACTIVE;
while (unlikely(too_many_isolated(zone, file, sc))) {
congestion_wait(BLK_RW_ASYNC, HZ/10);
@@ -1458,15 +1488,21 @@
}
set_reclaim_mode(priority, sc, false);
+ if (sc->reclaim_mode & RECLAIM_MODE_LUMPYRECLAIM)
+ reclaim_mode |= ISOLATE_ACTIVE;
+
lru_add_drain();
+
+ if (!sc->may_unmap)
+ reclaim_mode |= ISOLATE_UNMAPPED;
+ if (!sc->may_writepage)
+ reclaim_mode |= ISOLATE_CLEAN;
+
spin_lock_irq(&zone->lru_lock);
if (scanning_global_lru(sc)) {
- nr_taken = isolate_pages_global(nr_to_scan,
- &page_list, &nr_scanned, sc->order,
- sc->reclaim_mode & RECLAIM_MODE_LUMPYRECLAIM ?
- ISOLATE_BOTH : ISOLATE_INACTIVE,
- zone, 0, file);
+ nr_taken = isolate_pages_global(nr_to_scan, &page_list,
+ &nr_scanned, sc->order, reclaim_mode, zone, 0, file);
zone->pages_scanned += nr_scanned;
if (current_is_kswapd())
__count_zone_vm_events(PGSCAN_KSWAPD, zone,
@@ -1475,12 +1511,9 @@
__count_zone_vm_events(PGSCAN_DIRECT, zone,
nr_scanned);
} else {
- nr_taken = mem_cgroup_isolate_pages(nr_to_scan,
- &page_list, &nr_scanned, sc->order,
- sc->reclaim_mode & RECLAIM_MODE_LUMPYRECLAIM ?
- ISOLATE_BOTH : ISOLATE_INACTIVE,
- zone, sc->mem_cgroup,
- 0, file);
+ nr_taken = mem_cgroup_isolate_pages(nr_to_scan, &page_list,
+ &nr_scanned, sc->order, reclaim_mode, zone,
+ sc->mem_cgroup, 0, file);
/*
* mem_cgroup_isolate_pages() keeps track of
* scanned pages on its own.
@@ -1496,12 +1529,14 @@
spin_unlock_irq(&zone->lru_lock);
- nr_reclaimed = shrink_page_list(&page_list, zone, sc);
+ nr_reclaimed = shrink_page_list(&page_list, zone, sc, priority,
+ &nr_dirty, &nr_writeback);
/* Check if we should syncronously wait for writeback */
if (should_reclaim_stall(nr_taken, nr_reclaimed, priority, sc)) {
set_reclaim_mode(priority, sc, true);
- nr_reclaimed += shrink_page_list(&page_list, zone, sc);
+ nr_reclaimed += shrink_page_list(&page_list, zone, sc,
+ priority, &nr_dirty, &nr_writeback);
}
local_irq_disable();
@@ -1511,6 +1546,32 @@
putback_lru_pages(zone, sc, nr_anon, nr_file, &page_list);
+ /*
+ * If reclaim is isolating dirty pages under writeback, it implies
+ * that the long-lived page allocation rate is exceeding the page
+ * laundering rate. Either the global limits are not being effective
+ * at throttling processes due to the page distribution throughout
+ * zones or there is heavy usage of a slow backing device. The
+ * only option is to throttle from reclaim context which is not ideal
+ * as there is no guarantee the dirtying process is throttled in the
+ * same way balance_dirty_pages() manages.
+ *
+ * This scales the number of dirty pages that must be under writeback
+ * before throttling depending on priority. It is a simple backoff
+ * function that has the most effect in the range DEF_PRIORITY to
+ * DEF_PRIORITY-2 which is the priority reclaim is considered to be
+ * in trouble and reclaim is considered to be in trouble.
+ *
+ * DEF_PRIORITY 100% isolated pages must be PageWriteback to throttle
+ * DEF_PRIORITY-1 50% must be PageWriteback
+ * DEF_PRIORITY-2 25% must be PageWriteback, kswapd in trouble
+ * ...
+ * DEF_PRIORITY-6 For SWAP_CLUSTER_MAX isolated pages, throttle if any
+ * isolated page is PageWriteback
+ */
+ if (nr_writeback && nr_writeback >= (nr_taken >> (DEF_PRIORITY-priority)))
+ wait_iff_congested(zone, BLK_RW_ASYNC, HZ/10);
+
trace_mm_vmscan_lru_shrink_inactive(zone->zone_pgdat->node_id,
zone_idx(zone),
nr_scanned, nr_reclaimed,
@@ -1582,19 +1643,26 @@
struct page *page;
struct zone_reclaim_stat *reclaim_stat = get_reclaim_stat(zone, sc);
unsigned long nr_rotated = 0;
+ isolate_mode_t reclaim_mode = ISOLATE_ACTIVE;
lru_add_drain();
+
+ if (!sc->may_unmap)
+ reclaim_mode |= ISOLATE_UNMAPPED;
+ if (!sc->may_writepage)
+ reclaim_mode |= ISOLATE_CLEAN;
+
spin_lock_irq(&zone->lru_lock);
if (scanning_global_lru(sc)) {
nr_taken = isolate_pages_global(nr_pages, &l_hold,
&pgscanned, sc->order,
- ISOLATE_ACTIVE, zone,
+ reclaim_mode, zone,
1, file);
zone->pages_scanned += pgscanned;
} else {
nr_taken = mem_cgroup_isolate_pages(nr_pages, &l_hold,
&pgscanned, sc->order,
- ISOLATE_ACTIVE, zone,
+ reclaim_mode, zone,
sc->mem_cgroup, 1, file);
/*
* mem_cgroup_isolate_pages() keeps track of
@@ -1795,12 +1863,19 @@
enum lru_list l;
int noswap = 0;
bool force_scan = false;
- unsigned long nr_force_scan[2];
- /* kswapd does zone balancing and needs to scan this zone */
+ /*
+ * If the zone or memcg is small, nr[l] can be 0. This
+ * results in no scanning on this priority and a potential
+ * priority drop. Global direct reclaim can go to the next
+ * zone and tends to have no problems. Global kswapd is for
+ * zone balancing and it needs to scan a minimum amount. When
+ * reclaiming for a memcg, a priority drop can cause high
+ * latencies, so it's better to scan a minimum amount there as
+ * well.
+ */
if (scanning_global_lru(sc) && current_is_kswapd())
force_scan = true;
- /* memcg may have small limit and need to avoid priority drop */
if (!scanning_global_lru(sc))
force_scan = true;
@@ -1810,8 +1885,6 @@
fraction[0] = 0;
fraction[1] = 1;
denominator = 1;
- nr_force_scan[0] = 0;
- nr_force_scan[1] = SWAP_CLUSTER_MAX;
goto out;
}
@@ -1828,8 +1901,6 @@
fraction[0] = 1;
fraction[1] = 0;
denominator = 1;
- nr_force_scan[0] = SWAP_CLUSTER_MAX;
- nr_force_scan[1] = 0;
goto out;
}
}
@@ -1878,11 +1949,6 @@
fraction[0] = ap;
fraction[1] = fp;
denominator = ap + fp + 1;
- if (force_scan) {
- unsigned long scan = SWAP_CLUSTER_MAX;
- nr_force_scan[0] = div64_u64(scan * ap, denominator);
- nr_force_scan[1] = div64_u64(scan * fp, denominator);
- }
out:
for_each_evictable_lru(l) {
int file = is_file_lru(l);
@@ -1891,20 +1957,10 @@
scan = zone_nr_lru_pages(zone, sc, l);
if (priority || noswap) {
scan >>= priority;
+ if (!scan && force_scan)
+ scan = SWAP_CLUSTER_MAX;
scan = div64_u64(scan * fraction[file], denominator);
}
-
- /*
- * If zone is small or memcg is small, nr[l] can be 0.
- * This results no-scan on this priority and priority drop down.
- * For global direct reclaim, it can visit next zone and tend
- * not to have problems. For global kswapd, it's for zone
- * balancing and it need to scan a small amounts. When using
- * memcg, priority drop can cause big latency. So, it's better
- * to scan small amount. See may_noscan above.
- */
- if (!scan && force_scan)
- scan = nr_force_scan[file];
nr[l] = scan;
}
}
@@ -1983,12 +2039,14 @@
enum lru_list l;
unsigned long nr_reclaimed, nr_scanned;
unsigned long nr_to_reclaim = sc->nr_to_reclaim;
+ struct blk_plug plug;
restart:
nr_reclaimed = 0;
nr_scanned = sc->nr_scanned;
get_scan_count(zone, sc, nr, priority);
+ blk_start_plug(&plug);
while (nr[LRU_INACTIVE_ANON] || nr[LRU_ACTIVE_FILE] ||
nr[LRU_INACTIVE_FILE]) {
for_each_evictable_lru(l) {
@@ -2012,6 +2070,7 @@
if (nr_reclaimed >= nr_to_reclaim && priority < DEF_PRIORITY)
break;
}
+ blk_finish_plug(&plug);
sc->nr_reclaimed += nr_reclaimed;
/*
@@ -2044,14 +2103,19 @@
*
* If a zone is deemed to be full of pinned pages then just give it a light
* scan then give up on it.
+ *
+ * This function returns true if a zone is being reclaimed for a costly
+ * high-order allocation and compaction is either ready to begin or deferred.
+ * This indicates to the caller that it should retry the allocation or fail.
*/
-static void shrink_zones(int priority, struct zonelist *zonelist,
+static bool shrink_zones(int priority, struct zonelist *zonelist,
struct scan_control *sc)
{
struct zoneref *z;
struct zone *zone;
unsigned long nr_soft_reclaimed;
unsigned long nr_soft_scanned;
+ bool should_abort_reclaim = false;
for_each_zone_zonelist_nodemask(zone, z, zonelist,
gfp_zone(sc->gfp_mask), sc->nodemask) {
@@ -2066,6 +2130,23 @@
continue;
if (zone->all_unreclaimable && priority != DEF_PRIORITY)
continue; /* Let kswapd poll it */
+ if (COMPACTION_BUILD) {
+ /*
+ * If we already have plenty of memory free for
+ * compaction in this zone, don't free any more.
+ * Even though compaction is invoked for any
+ * non-zero order, only frequent costly order
+ * reclamation is disruptive enough to become a
+ * noticable problem, like transparent huge page
+ * allocations.
+ */
+ if (sc->order > PAGE_ALLOC_COSTLY_ORDER &&
+ (compaction_suitable(zone, sc->order) ||
+ compaction_deferred(zone))) {
+ should_abort_reclaim = true;
+ continue;
+ }
+ }
/*
* This steals pages from memory cgroups over softlimit
* and returns the number of reclaimed pages and
@@ -2083,6 +2164,8 @@
shrink_zone(priority, zone, sc);
}
+
+ return should_abort_reclaim;
}
static bool zone_reclaimable(struct zone *zone)
@@ -2147,7 +2230,9 @@
sc->nr_scanned = 0;
if (!priority)
disable_swap_token(sc->mem_cgroup);
- shrink_zones(priority, zonelist, sc);
+ if (shrink_zones(priority, zonelist, sc))
+ break;
+
/*
* Don't shrink slabs when reclaiming memory from
* over limit cgroups
@@ -2690,6 +2775,8 @@
/* If balanced, clear the congested flag */
zone_clear_flag(zone, ZONE_CONGESTED);
+ if (i <= *classzone_idx)
+ balanced += zone->present_pages;
}
}
@@ -2763,7 +2850,9 @@
static int kswapd(void *p)
{
unsigned long order, new_order;
+ unsigned balanced_order;
int classzone_idx, new_classzone_idx;
+ int balanced_classzone_idx;
pg_data_t *pgdat = (pg_data_t*)p;
struct task_struct *tsk = current;
@@ -2794,7 +2883,9 @@
set_freezable();
order = new_order = 0;
+ balanced_order = 0;
classzone_idx = new_classzone_idx = pgdat->nr_zones - 1;
+ balanced_classzone_idx = classzone_idx;
for ( ; ; ) {
int ret;
@@ -2803,7 +2894,8 @@
* new request of a similar or harder type will succeed soon
* so consider going to sleep on the basis we reclaimed at
*/
- if (classzone_idx >= new_classzone_idx && order == new_order) {
+ if (balanced_classzone_idx >= new_classzone_idx &&
+ balanced_order == new_order) {
new_order = pgdat->kswapd_max_order;
new_classzone_idx = pgdat->classzone_idx;
pgdat->kswapd_max_order = 0;
@@ -2818,9 +2910,12 @@
order = new_order;
classzone_idx = new_classzone_idx;
} else {
- kswapd_try_to_sleep(pgdat, order, classzone_idx);
+ kswapd_try_to_sleep(pgdat, balanced_order,
+ balanced_classzone_idx);
order = pgdat->kswapd_max_order;
classzone_idx = pgdat->classzone_idx;
+ new_order = order;
+ new_classzone_idx = classzone_idx;
pgdat->kswapd_max_order = 0;
pgdat->classzone_idx = pgdat->nr_zones - 1;
}
@@ -2835,7 +2930,9 @@
*/
if (!ret) {
trace_mm_vmscan_kswapd_wake(pgdat->node_id, order);
- order = balance_pgdat(pgdat, order, &classzone_idx);
+ balanced_classzone_idx = classzone_idx;
+ balanced_order = balance_pgdat(pgdat, order,
+ &balanced_classzone_idx);
}
}
return 0;
@@ -3347,66 +3444,12 @@
}
-/**
- * scan_zone_unevictable_pages - check unevictable list for evictable pages
- * @zone - zone of which to scan the unevictable list
- *
- * Scan @zone's unevictable LRU lists to check for pages that have become
- * evictable. Move those that have to @zone's inactive list where they
- * become candidates for reclaim, unless shrink_inactive_zone() decides
- * to reactivate them. Pages that are still unevictable are rotated
- * back onto @zone's unevictable list.
- */
-#define SCAN_UNEVICTABLE_BATCH_SIZE 16UL /* arbitrary lock hold batch size */
-static void scan_zone_unevictable_pages(struct zone *zone)
+static void warn_scan_unevictable_pages(void)
{
- struct list_head *l_unevictable = &zone->lru[LRU_UNEVICTABLE].list;
- unsigned long scan;
- unsigned long nr_to_scan = zone_page_state(zone, NR_UNEVICTABLE);
-
- while (nr_to_scan > 0) {
- unsigned long batch_size = min(nr_to_scan,
- SCAN_UNEVICTABLE_BATCH_SIZE);
-
- spin_lock_irq(&zone->lru_lock);
- for (scan = 0; scan < batch_size; scan++) {
- struct page *page = lru_to_page(l_unevictable);
-
- if (!trylock_page(page))
- continue;
-
- prefetchw_prev_lru_page(page, l_unevictable, flags);
-
- if (likely(PageLRU(page) && PageUnevictable(page)))
- check_move_unevictable_page(page, zone);
-
- unlock_page(page);
- }
- spin_unlock_irq(&zone->lru_lock);
-
- nr_to_scan -= batch_size;
- }
-}
-
-
-/**
- * scan_all_zones_unevictable_pages - scan all unevictable lists for evictable pages
- *
- * A really big hammer: scan all zones' unevictable LRU lists to check for
- * pages that have become evictable. Move those back to the zones'
- * inactive list where they become candidates for reclaim.
- * This occurs when, e.g., we have unswappable pages on the unevictable lists,
- * and we add swap to the system. As such, it runs in the context of a task
- * that has possibly/probably made some previously unevictable pages
- * evictable.
- */
-static void scan_all_zones_unevictable_pages(void)
-{
- struct zone *zone;
-
- for_each_zone(zone) {
- scan_zone_unevictable_pages(zone);
- }
+ printk_once(KERN_WARNING
+ "The scan_unevictable_pages sysctl/node-interface has been "
+ "disabled for lack of a legitimate use case. If you have "
+ "one, please send an email to linux-mm@kvack.org.\n");
}
/*
@@ -3419,11 +3462,8 @@
void __user *buffer,
size_t *length, loff_t *ppos)
{
+ warn_scan_unevictable_pages();
proc_doulongvec_minmax(table, write, buffer, length, ppos);
-
- if (write && *(unsigned long *)table->data)
- scan_all_zones_unevictable_pages();
-
scan_unevictable_pages = 0;
return 0;
}
@@ -3438,6 +3478,7 @@
struct sysdev_attribute *attr,
char *buf)
{
+ warn_scan_unevictable_pages();
return sprintf(buf, "0\n"); /* always zero; should fit... */
}
@@ -3445,19 +3486,7 @@
struct sysdev_attribute *attr,
const char *buf, size_t count)
{
- struct zone *node_zones = NODE_DATA(dev->id)->node_zones;
- struct zone *zone;
- unsigned long res;
- unsigned long req = strict_strtoul(buf, 10, &res);
-
- if (!req)
- return 1; /* zero is no-op */
-
- for (zone = node_zones; zone - node_zones < MAX_NR_ZONES; ++zone) {
- if (!populated_zone(zone))
- continue;
- scan_zone_unevictable_pages(zone);
- }
+ warn_scan_unevictable_pages();
return 1;
}
diff --git a/mm/vmstat.c b/mm/vmstat.c
index d52b13d..8fd603b 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -78,7 +78,7 @@
*
* vm_stat contains the global counters
*/
-atomic_long_t vm_stat[NR_VM_ZONE_STAT_ITEMS];
+atomic_long_t vm_stat[NR_VM_ZONE_STAT_ITEMS] __cacheline_aligned_in_smp;
EXPORT_SYMBOL(vm_stat);
#ifdef CONFIG_SMP
@@ -702,6 +702,7 @@
"nr_unstable",
"nr_bounce",
"nr_vmscan_write",
+ "nr_vmscan_immediate_reclaim",
"nr_writeback_temp",
"nr_isolated_anon",
"nr_isolated_file",
diff --git a/net/nfc/nfc.h b/net/nfc/nfc.h
index b6753f4..d86583f 100644
--- a/net/nfc/nfc.h
+++ b/net/nfc/nfc.h
@@ -27,7 +27,7 @@
#include <net/nfc/nfc.h>
#include <net/sock.h>
-__attribute__((format (printf, 2, 3)))
+__printf(2, 3)
int nfc_printk(const char *level, const char *fmt, ...);
#define nfc_info(fmt, arg...) nfc_printk(KERN_INFO, fmt, ##arg)
diff --git a/net/rds/rds.h b/net/rds/rds.h
index da8adac..7eaba18 100644
--- a/net/rds/rds.h
+++ b/net/rds/rds.h
@@ -36,8 +36,8 @@
#define rdsdebug(fmt, args...) pr_debug("%s(): " fmt, __func__ , ##args)
#else
/* sigh, pr_debug() causes unused variable warnings */
-static inline void __attribute__ ((format (printf, 1, 2)))
-rdsdebug(char *fmt, ...)
+static inline __printf(1, 2)
+void rdsdebug(char *fmt, ...)
{
}
#endif
@@ -625,8 +625,8 @@
struct rds_info_lengths *lens,
int (*visitor)(struct rds_connection *, void *),
size_t item_len);
-void __rds_conn_error(struct rds_connection *conn, const char *, ...)
- __attribute__ ((format (printf, 2, 3)));
+__printf(2, 3)
+void __rds_conn_error(struct rds_connection *conn, const char *, ...);
#define rds_conn_error(conn, fmt...) \
__rds_conn_error(conn, KERN_WARNING "RDS: " fmt)
diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
index 30d70ab..dd5cc00 100644
--- a/net/sunrpc/svc.c
+++ b/net/sunrpc/svc.c
@@ -971,9 +971,8 @@
/*
* Printk the given error with the address of the client that caused it.
*/
-static int
-__attribute__ ((format (printf, 2, 3)))
-svc_printk(struct svc_rqst *rqstp, const char *fmt, ...)
+static __printf(2, 3)
+int svc_printk(struct svc_rqst *rqstp, const char *fmt, ...)
{
va_list args;
int r;
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 0b3e35c..5e93342 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -240,9 +240,8 @@
our $Type;
our $Declare;
-our $UTF8 = qr {
- [\x09\x0A\x0D\x20-\x7E] # ASCII
- | [\xC2-\xDF][\x80-\xBF] # non-overlong 2-byte
+our $NON_ASCII_UTF8 = qr{
+ [\xC2-\xDF][\x80-\xBF] # non-overlong 2-byte
| \xE0[\xA0-\xBF][\x80-\xBF] # excluding overlongs
| [\xE1-\xEC\xEE\xEF][\x80-\xBF]{2} # straight 3-byte
| \xED[\x80-\x9F][\x80-\xBF] # excluding surrogates
@@ -251,6 +250,11 @@
| \xF4[\x80-\x8F][\x80-\xBF]{2} # plane 16
}x;
+our $UTF8 = qr{
+ [\x09\x0A\x0D\x20-\x7E] # ASCII
+ | $NON_ASCII_UTF8
+}x;
+
our $typeTypedefs = qr{(?x:
(?:__)?(?:u|s|be|le)(?:8|16|32|64)|
atomic_t
@@ -1330,6 +1334,9 @@
my $signoff = 0;
my $is_patch = 0;
+ my $in_header_lines = 1;
+ my $in_commit_log = 0; #Scanning lines before patch
+
our @report = ();
our $cnt_lines = 0;
our $cnt_error = 0;
@@ -1497,7 +1504,6 @@
if ($line =~ /^diff --git.*?(\S+)$/) {
$realfile = $1;
$realfile =~ s@^([^/]*)/@@;
-
} elsif ($line =~ /^\+\+\+\s+(\S+)/) {
$realfile = $1;
$realfile =~ s@^([^/]*)/@@;
@@ -1536,6 +1542,7 @@
# Check the patch for a signoff:
if ($line =~ /^\s*signed-off-by:/i) {
$signoff++;
+ $in_commit_log = 0;
}
# Check signature styles
@@ -1613,6 +1620,21 @@
"Invalid UTF-8, patch and commit message should be encoded in UTF-8\n" . $hereptr);
}
+# Check if it's the start of a commit log
+# (not a header line and we haven't seen the patch filename)
+ if ($in_header_lines && $realfile =~ /^$/ &&
+ $rawline !~ /^(commit\b|from\b|\w+:).+$/i) {
+ $in_header_lines = 0;
+ $in_commit_log = 1;
+ }
+
+# Still not yet in a patch, check for any UTF-8
+ if ($in_commit_log && $realfile =~ /^$/ &&
+ $rawline =~ /$NON_ASCII_UTF8/) {
+ CHK("UTF8_BEFORE_PATCH",
+ "8-bit UTF-8 used in possible commit log\n" . $herecurr);
+ }
+
# ignore non-hunk lines and lines being removed
next if (!$hunk_line || $line =~ /^-/);
@@ -3151,10 +3173,10 @@
"consider using a completion\n" . $herecurr);
}
-# recommend kstrto* over simple_strto*
- if ($line =~ /\bsimple_(strto.*?)\s*\(/) {
+# recommend kstrto* over simple_strto* and strict_strto*
+ if ($line =~ /\b((simple|strict)_(strto(l|ll|ul|ull)))\s*\(/) {
WARN("CONSIDER_KSTRTO",
- "consider using kstrto* in preference to simple_$1\n" . $herecurr);
+ "$1 is obsolete, use k$3 instead\n" . $herecurr);
}
# check for __initcall(), use device_initcall() explicitly please
if ($line =~ /^.\s*__initcall\s*\(/) {
diff --git a/security/keys/compat.c b/security/keys/compat.c
index 338b510..4c48e13 100644
--- a/security/keys/compat.c
+++ b/security/keys/compat.c
@@ -38,7 +38,7 @@
ret = compat_rw_copy_check_uvector(WRITE, _payload_iov, ioc,
ARRAY_SIZE(iovstack),
- iovstack, &iov);
+ iovstack, &iov, 1);
if (ret < 0)
return ret;
if (ret == 0)
diff --git a/security/keys/encrypted-keys/encrypted.c b/security/keys/encrypted-keys/encrypted.c
index f33804c..dcc843c 100644
--- a/security/keys/encrypted-keys/encrypted.c
+++ b/security/keys/encrypted-keys/encrypted.c
@@ -293,7 +293,7 @@
/* convert the hex encoded iv, encrypted-data and HMAC to ascii */
bufp = &ascii_buf[len];
for (i = 0; i < (asciiblob_len - len) / 2; i++)
- bufp = pack_hex_byte(bufp, iv[i]);
+ bufp = hex_byte_pack(bufp, iv[i]);
out:
return ascii_buf;
}
diff --git a/security/keys/keyctl.c b/security/keys/keyctl.c
index eca5191..0b3f5d7 100644
--- a/security/keys/keyctl.c
+++ b/security/keys/keyctl.c
@@ -1065,7 +1065,7 @@
goto no_payload;
ret = rw_copy_check_uvector(WRITE, _payload_iov, ioc,
- ARRAY_SIZE(iovstack), iovstack, &iov);
+ ARRAY_SIZE(iovstack), iovstack, &iov, 1);
if (ret < 0)
return ret;
if (ret == 0)
diff --git a/security/keys/trusted.c b/security/keys/trusted.c
index 0964fc2..0ed5fdf 100644
--- a/security/keys/trusted.c
+++ b/security/keys/trusted.c
@@ -1098,7 +1098,7 @@
bufp = ascii_buf;
for (i = 0; i < p->blob_len; i++)
- bufp = pack_hex_byte(bufp, p->blob[i]);
+ bufp = hex_byte_pack(bufp, p->blob[i]);
if ((copy_to_user(buffer, ascii_buf, 2 * p->blob_len)) != 0) {
kfree(ascii_buf);
return -EFAULT;
diff --git a/sound/firewire/cmp.c b/sound/firewire/cmp.c
index 14cacbc..76294f2 100644
--- a/sound/firewire/cmp.c
+++ b/sound/firewire/cmp.c
@@ -32,7 +32,7 @@
SUCCEED_ON_BUS_RESET,
};
-static __attribute__((format(printf, 2, 3)))
+static __printf(2, 3)
void cmp_error(struct cmp_connection *c, const char *fmt, ...)
{
va_list va;