Merge branch 'frv' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-frv
* 'frv' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-frv:
FRV: Use generic show_interrupts()
FRV: Convert genirq namespace
frv: Select GENERIC_HARDIRQS_NO_DEPRECATED
frv: Convert cpu irq_chip to new functions
frv: Convert mb93493 irq_chip to new functions
frv: Convert mb93093 irq_chip to new function
frv: Convert mb93091 irq_chip to new functions
frv: Fix typo from __do_IRQ overhaul
frv: Remove stale irq_chip.end
FRV: Do some cleanups
FRV: Missing node arg in alloc_thread_info_node() macro
NOMMU: implement access_remote_vm
NOMMU: support SMP dynamic percpu_alloc
NOMMU: percpu should use is_vmalloc_addr().
diff --git a/arch/frv/Kconfig b/arch/frv/Kconfig
index e06e3c3..6db8aea 100644
--- a/arch/frv/Kconfig
+++ b/arch/frv/Kconfig
@@ -363,7 +363,6 @@
config ARCH_SUSPEND_POSSIBLE
def_bool y
- depends on !SMP
source kernel/power/Kconfig
endmenu
diff --git a/arch/frv/include/asm/system.h b/arch/frv/include/asm/system.h
index 0a6d8d9..6c10fd2 100644
--- a/arch/frv/include/asm/system.h
+++ b/arch/frv/include/asm/system.h
@@ -45,21 +45,12 @@
#define wmb() asm volatile ("membar" : : :"memory")
#define read_barrier_depends() do { } while (0)
-#ifdef CONFIG_SMP
-#define smp_mb() mb()
-#define smp_rmb() rmb()
-#define smp_wmb() wmb()
-#define smp_read_barrier_depends() read_barrier_depends()
-#define set_mb(var, value) \
- do { xchg(&var, (value)); } while (0)
-#else
#define smp_mb() barrier()
#define smp_rmb() barrier()
#define smp_wmb() barrier()
#define smp_read_barrier_depends() do {} while(0)
#define set_mb(var, value) \
do { var = (value); barrier(); } while (0)
-#endif
extern void die_if_kernel(const char *, ...) __attribute__((format(printf, 1, 2)));
extern void free_initmem(void);
diff --git a/arch/frv/include/asm/thread_info.h b/arch/frv/include/asm/thread_info.h
index 8582e9c..cefbe73 100644
--- a/arch/frv/include/asm/thread_info.h
+++ b/arch/frv/include/asm/thread_info.h
@@ -21,6 +21,8 @@
#define THREAD_SIZE 8192
+#define __HAVE_ARCH_TASK_STRUCT_ALLOCATOR
+
/*
* low level task data that entry.S needs immediate access to
* - this struct should fit entirely inside of one cache line
@@ -87,7 +89,7 @@
#define alloc_thread_info_node(tsk, node) \
kzalloc_node(THREAD_SIZE, GFP_KERNEL, node)
#else
-#define alloc_thread_info_node(tsk) \
+#define alloc_thread_info_node(tsk, node) \
kmalloc_node(THREAD_SIZE, GFP_KERNEL, node)
#endif
diff --git a/arch/frv/kernel/irq-mb93091.c b/arch/frv/kernel/irq-mb93091.c
index 372fe60..9afc2ea 100644
--- a/arch/frv/kernel/irq-mb93091.c
+++ b/arch/frv/kernel/irq-mb93091.c
@@ -47,7 +47,7 @@
static void frv_fpga_ack(struct irq_data *d)
{
- __clr_IFR(1 << (irq - IRQ_BASE_FPGA));
+ __clr_IFR(1 << (d->irq - IRQ_BASE_FPGA));
}
static void frv_fpga_mask_ack(struct irq_data *d)
diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h
index 4ed6fcd..9332e52 100644
--- a/include/linux/vmalloc.h
+++ b/include/linux/vmalloc.h
@@ -95,10 +95,27 @@
extern int map_vm_area(struct vm_struct *area, pgprot_t prot,
struct page ***pages);
+#ifdef CONFIG_MMU
extern int map_kernel_range_noflush(unsigned long start, unsigned long size,
pgprot_t prot, struct page **pages);
extern void unmap_kernel_range_noflush(unsigned long addr, unsigned long size);
extern void unmap_kernel_range(unsigned long addr, unsigned long size);
+#else
+static inline int
+map_kernel_range_noflush(unsigned long start, unsigned long size,
+ pgprot_t prot, struct page **pages)
+{
+ return size >> PAGE_SHIFT;
+}
+static inline void
+unmap_kernel_range_noflush(unsigned long addr, unsigned long size)
+{
+}
+static inline void
+unmap_kernel_range(unsigned long addr, unsigned long size)
+{
+}
+#endif
/* Allocate/destroy a 'vmalloc' VM area. */
extern struct vm_struct *alloc_vm_area(size_t size);
@@ -116,11 +133,26 @@
extern __init void vm_area_register_early(struct vm_struct *vm, size_t align);
#ifdef CONFIG_SMP
+# ifdef CONFIG_MMU
struct vm_struct **pcpu_get_vm_areas(const unsigned long *offsets,
const size_t *sizes, int nr_vms,
size_t align);
void pcpu_free_vm_areas(struct vm_struct **vms, int nr_vms);
+# else
+static inline struct vm_struct **
+pcpu_get_vm_areas(const unsigned long *offsets,
+ const size_t *sizes, int nr_vms,
+ size_t align)
+{
+ return NULL;
+}
+
+static inline void
+pcpu_free_vm_areas(struct vm_struct **vms, int nr_vms)
+{
+}
+# endif
#endif
#endif /* _LINUX_VMALLOC_H */
diff --git a/mm/nommu.c b/mm/nommu.c
index cb86e7d..c4c542c 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -1971,21 +1971,10 @@
}
EXPORT_SYMBOL(filemap_fault);
-/*
- * Access another process' address space.
- * - source/target buffer must be kernel space
- */
-int access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, int len, int write)
+static int __access_remote_vm(struct task_struct *tsk, struct mm_struct *mm,
+ unsigned long addr, void *buf, int len, int write)
{
struct vm_area_struct *vma;
- struct mm_struct *mm;
-
- if (addr + len < addr)
- return 0;
-
- mm = get_task_mm(tsk);
- if (!mm)
- return 0;
down_read(&mm->mmap_sem);
@@ -2010,6 +1999,43 @@
}
up_read(&mm->mmap_sem);
+
+ return len;
+}
+
+/**
+ * @access_remote_vm - access another process' address space
+ * @mm: the mm_struct of the target address space
+ * @addr: start address to access
+ * @buf: source or destination buffer
+ * @len: number of bytes to transfer
+ * @write: whether the access is a write
+ *
+ * The caller must hold a reference on @mm.
+ */
+int access_remote_vm(struct mm_struct *mm, unsigned long addr,
+ void *buf, int len, int write)
+{
+ return __access_remote_vm(NULL, mm, addr, buf, len, write);
+}
+
+/*
+ * Access another process' address space.
+ * - source/target buffer must be kernel space
+ */
+int access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, int len, int write)
+{
+ struct mm_struct *mm;
+
+ if (addr + len < addr)
+ return 0;
+
+ mm = get_task_mm(tsk);
+ if (!mm)
+ return 0;
+
+ len = __access_remote_vm(tsk, mm, addr, buf, len, write);
+
mmput(mm);
return len;
}
diff --git a/mm/percpu.c b/mm/percpu.c
index 3f93001..55d4d11 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -1008,8 +1008,7 @@
}
if (in_first_chunk) {
- if ((unsigned long)addr < VMALLOC_START ||
- (unsigned long)addr >= VMALLOC_END)
+ if (!is_vmalloc_addr(addr))
return __pa(addr);
else
return page_to_phys(vmalloc_to_page(addr));