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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>
Marc Zyngier 13 years ago
parent
bc8d849d91
commit
6905a65879
5 changed files with 2 additions and 25 deletions
Split View Show Diff Stats
  1. 0 18
      arch/arm/Kconfig
  2. 2 3
      arch/arm/kernel/Makefile
  3. 0 2
      arch/arm/kernel/time.c
  4. 0 1
      arch/arm/plat-nomadik/Kconfig
  5. 0 1
      arch/arm/plat-versatile/Kconfig

+ 0 - 18
arch/arm/Kconfig
View File 

@@ -52,9 +52,6 @@ config MIGHT_HAVE_PCI
 
 config SYS_SUPPORTS_APM_EMULATION
 
 	bool
 
 
-config HAVE_SCHED_CLOCK
 
-	bool
 
-
 
 config GENERIC_GPIO
 
 	bool
 
 
@@ -388,7 +385,6 @@ config ARCH_PRIMA2
 
 	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 @@ config ARCH_MXC
 
 	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 @@ config ARCH_IXP4XX
 
 	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 @@ config ARCH_MMP
 
 	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 @@ config ARCH_TEGRA
 
 	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 @@ config ARCH_PICOXCELL
 
 	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 @@ config ARCH_PXA
 
 	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 @@ config ARCH_SA1100
 
 	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 @@ config ARCH_S5P64X0
 
 	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 @@ config ARCH_S5PV210
 
 	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 @@ config ARCH_U300
 
 	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 @@ config ARCH_DAVINCI
 
 	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 @@ config ARCH_OMAP
 
 	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 ARCH_ACORN
 
 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

+ 2 - 3
arch/arm/kernel/Makefile
View File 

@@ -14,8 +14,8 @@ CFLAGS_REMOVE_return_address.o = -pg
 
 # 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_ARTHUR)		+= arthur.o
 
 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

+ 0 - 2
arch/arm/kernel/time.c
View File 

@@ -149,8 +149,6 @@ void __init time_init(void)
 
 {
 
 	system_timer = machine_desc->timer;
 
 	system_timer->init();
 
-#ifdef CONFIG_HAVE_SCHED_CLOCK
 
 	sched_clock_postinit();
 
-#endif
 
 }

+ 0 - 1
arch/arm/plat-nomadik/Kconfig
View File 

@@ -23,7 +23,6 @@ config HAS_MTU
 
 config NOMADIK_MTU_SCHED_CLOCK
 
 	bool
 
 	depends on HAS_MTU
 
-	select HAVE_SCHED_CLOCK
 
 	help
 
 	  Use the Multi Timer Unit as the sched_clock.

+ 0 - 1
arch/arm/plat-versatile/Kconfig
View File 

@@ -12,6 +12,5 @@ config PLAT_VERSATILE_LEDS
 
 
 config PLAT_VERSATILE_SCHED_CLOCK
 
 	def_bool y if !ARCH_INTEGRATOR_AP
 
-	select HAVE_SCHED_CLOCK
 
 
 endif