ARM: Make the sched_clock framework mandatory
All sched_clock() providers have been converted to the sched_clock
framework, which also provides a jiffy based implementation for
the platforms that do not provide a counter.
It is now possible to make the sched_clock framework mandatory,
effectively preventing new platforms to add new sched_clock()
functions, which would be detrimental to the single zImage work.
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index a18550e..d1fcfe0 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -52,9 +52,6 @@
config SYS_SUPPORTS_APM_EMULATION
bool
-config HAVE_SCHED_CLOCK
- bool
-
config GENERIC_GPIO
bool
@@ -388,7 +385,6 @@
select GENERIC_CLOCKEVENTS
select CLKDEV_LOOKUP
select GENERIC_IRQ_CHIP
- select HAVE_SCHED_CLOCK
select MIGHT_HAVE_CACHE_L2X0
select USE_OF
select ZONE_DMA
@@ -439,7 +435,6 @@
select CLKDEV_LOOKUP
select CLKSRC_MMIO
select GENERIC_IRQ_CHIP
- select HAVE_SCHED_CLOCK
select MULTI_IRQ_HANDLER
help
Support for Freescale MXC/iMX-based family of processors
@@ -531,7 +526,6 @@
select CPU_XSCALE
select GENERIC_GPIO
select GENERIC_CLOCKEVENTS
- select HAVE_SCHED_CLOCK
select MIGHT_HAVE_PCI
select DMABOUNCE if PCI
help
@@ -602,7 +596,6 @@
select CLKDEV_LOOKUP
select GENERIC_CLOCKEVENTS
select GPIO_PXA
- select HAVE_SCHED_CLOCK
select TICK_ONESHOT
select PLAT_PXA
select SPARSE_IRQ
@@ -643,7 +636,6 @@
select GENERIC_CLOCKEVENTS
select GENERIC_GPIO
select HAVE_CLK
- select HAVE_SCHED_CLOCK
select HAVE_SMP
select MIGHT_HAVE_CACHE_L2X0
select ARCH_HAS_CPUFREQ
@@ -660,7 +652,6 @@
select DW_APB_TIMER
select GENERIC_CLOCKEVENTS
select GENERIC_GPIO
- select HAVE_SCHED_CLOCK
select HAVE_TCM
select NO_IOPORT
select SPARSE_IRQ
@@ -688,7 +679,6 @@
select ARCH_REQUIRE_GPIOLIB
select GENERIC_CLOCKEVENTS
select GPIO_PXA
- select HAVE_SCHED_CLOCK
select TICK_ONESHOT
select PLAT_PXA
select SPARSE_IRQ
@@ -756,7 +746,6 @@
select CPU_FREQ
select GENERIC_CLOCKEVENTS
select CLKDEV_LOOKUP
- select HAVE_SCHED_CLOCK
select TICK_ONESHOT
select ARCH_REQUIRE_GPIOLIB
select HAVE_IDE
@@ -813,7 +802,6 @@
select CLKSRC_MMIO
select HAVE_S3C2410_WATCHDOG if WATCHDOG
select GENERIC_CLOCKEVENTS
- select HAVE_SCHED_CLOCK
select HAVE_S3C2410_I2C if I2C
select HAVE_S3C_RTC if RTC_CLASS
help
@@ -846,7 +834,6 @@
select ARM_L1_CACHE_SHIFT_6
select ARCH_HAS_CPUFREQ
select GENERIC_CLOCKEVENTS
- select HAVE_SCHED_CLOCK
select HAVE_S3C2410_I2C if I2C
select HAVE_S3C_RTC if RTC_CLASS
select HAVE_S3C2410_WATCHDOG if WATCHDOG
@@ -889,7 +876,6 @@
depends on MMU
select CLKSRC_MMIO
select CPU_ARM926T
- select HAVE_SCHED_CLOCK
select HAVE_TCM
select ARM_AMBA
select ARM_PATCH_PHYS_VIRT
@@ -933,7 +919,6 @@
select ARCH_REQUIRE_GPIOLIB
select ZONE_DMA
select HAVE_IDE
- select HAVE_SCHED_CLOCK
select CLKDEV_LOOKUP
select GENERIC_ALLOCATOR
select GENERIC_IRQ_CHIP
@@ -948,7 +933,6 @@
select ARCH_HAS_CPUFREQ
select CLKSRC_MMIO
select GENERIC_CLOCKEVENTS
- select HAVE_SCHED_CLOCK
select ARCH_HAS_HOLES_MEMORYMODEL
help
Support for TI's OMAP platform (OMAP1/2/3/4).
@@ -1114,13 +1098,11 @@
config PLAT_IOP
bool
select GENERIC_CLOCKEVENTS
- select HAVE_SCHED_CLOCK
config PLAT_ORION
bool
select CLKSRC_MMIO
select GENERIC_IRQ_CHIP
- select HAVE_SCHED_CLOCK
config PLAT_PXA
bool
diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile
index 43b740d..9b0eb3f 100644
--- a/arch/arm/kernel/Makefile
+++ b/arch/arm/kernel/Makefile
@@ -14,8 +14,8 @@
# Object file lists.
obj-y := elf.o entry-armv.o entry-common.o irq.o opcodes.o \
- process.o ptrace.o return_address.o setup.o signal.o \
- sys_arm.o stacktrace.o time.o traps.o
+ process.o ptrace.o return_address.o sched_clock.o \
+ setup.o signal.o stacktrace.o sys_arm.o time.o traps.o
obj-$(CONFIG_DEPRECATED_PARAM_STRUCT) += compat.o
@@ -30,7 +30,6 @@
obj-$(CONFIG_ISA_DMA) += dma-isa.o
obj-$(CONFIG_PCI) += bios32.o isa.o
obj-$(CONFIG_ARM_CPU_SUSPEND) += sleep.o suspend.o
-obj-$(CONFIG_HAVE_SCHED_CLOCK) += sched_clock.o
obj-$(CONFIG_SMP) += smp.o smp_tlb.o
obj-$(CONFIG_HAVE_ARM_SCU) += smp_scu.o
obj-$(CONFIG_HAVE_ARM_TWD) += smp_twd.o
diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c
index 8c57dd3..5bff288 100644
--- a/arch/arm/kernel/time.c
+++ b/arch/arm/kernel/time.c
@@ -149,8 +149,6 @@
{
system_timer = machine_desc->timer;
system_timer->init();
-#ifdef CONFIG_HAVE_SCHED_CLOCK
sched_clock_postinit();
-#endif
}
diff --git a/arch/arm/plat-nomadik/Kconfig b/arch/arm/plat-nomadik/Kconfig
index bca4914..4c48c8b 100644
--- a/arch/arm/plat-nomadik/Kconfig
+++ b/arch/arm/plat-nomadik/Kconfig
@@ -23,7 +23,6 @@
config NOMADIK_MTU_SCHED_CLOCK
bool
depends on HAS_MTU
- select HAVE_SCHED_CLOCK
help
Use the Multi Timer Unit as the sched_clock.
diff --git a/arch/arm/plat-versatile/Kconfig b/arch/arm/plat-versatile/Kconfig
index 52353be..c6f4b96 100644
--- a/arch/arm/plat-versatile/Kconfig
+++ b/arch/arm/plat-versatile/Kconfig
@@ -12,6 +12,5 @@
config PLAT_VERSATILE_SCHED_CLOCK
def_bool y if !ARCH_INTEGRATOR_AP
- select HAVE_SCHED_CLOCK
endif