Commit 0355e2ff authored by Russell King's avatar Russell King
Browse files

Merge branch 'sched_clock-for-rmk' of... 

Merge branch 'sched_clock-for-rmk' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into devel-stable
parents bea15fd7 6905a658

arch/arm/Kconfig

+0 −16
Original line number Diff line number Diff line
@@ -51,9 +51,6 @@ config MIGHT_HAVE_PCI 
config SYS_SUPPORTS_APM_EMULATION

	bool



config HAVE_SCHED_CLOCK

	bool



config GENERIC_GPIO

	bool
@@ -438,7 +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
@@ -530,7 +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
@@ -601,7 +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
@@ -642,7 +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
@@ -659,7 +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
@@ -687,7 +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
@@ -755,7 +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
@@ -812,7 +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
@@ -845,7 +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
@@ -888,7 +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
@@ -946,7 +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).
@@ -1112,13 +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

arch/arm/kernel/Makefile

+2 −3
Original line number Diff line number Diff line
@@ -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

arch/arm/kernel/time.c

+0 −2
Original line number Diff line number Diff line
@@ -147,8 +147,6 @@ void __init time_init(void) 
{

	system_timer = machine_desc->timer;

	system_timer->init();

#ifdef CONFIG_HAVE_SCHED_CLOCK

	sched_clock_postinit();

#endif

}

arch/arm/mach-davinci/time.c

+10 −18
Original line number Diff line number Diff line
@@ -19,11 +19,14 @@ 
#include <linux/err.h>

#include <linux/platform_device.h>



#include <mach/hardware.h>

#include <asm/sched_clock.h>

#include <asm/mach/irq.h>

#include <asm/mach/time.h>



#include <mach/cputype.h>

#include <mach/hardware.h>

#include <mach/time.h>



#include "clock.h"



static struct clock_event_device clockevent_davinci;
@@ -272,19 +275,9 @@ static cycle_t read_cycles(struct clocksource *cs) 
	return (cycles_t)timer32_read(t);

}



/*

 * Kernel assumes that sched_clock can be called early but may not have

 * things ready yet.

 */

static cycle_t read_dummy(struct clocksource *cs)

{

	return 0;

}





static struct clocksource clocksource_davinci = {

	.rating		= 300,

	.read		= read_dummy,

	.read		= read_cycles,

	.mask		= CLOCKSOURCE_MASK(32),

	.flags		= CLOCK_SOURCE_IS_CONTINUOUS,

};
@@ -292,12 +285,9 @@ static struct clocksource clocksource_davinci = { 
/*

 * Overwrite weak default sched_clock with something more precise

 */

unsigned long long notrace sched_clock(void)

static u32 notrace davinci_read_sched_clock(void)

{

	const cycle_t cyc = clocksource_davinci.read(&clocksource_davinci);



	return clocksource_cyc2ns(cyc, clocksource_davinci.mult,

				clocksource_davinci.shift);

	return timer32_read(&timers[TID_CLOCKSOURCE]);

}



/*
@@ -397,12 +387,14 @@ static void __init davinci_timer_init(void) 
	davinci_clock_tick_rate = clk_get_rate(timer_clk);



	/* setup clocksource */

	clocksource_davinci.read = read_cycles;

	clocksource_davinci.name = id_to_name[clocksource_id];

	if (clocksource_register_hz(&clocksource_davinci,

				    davinci_clock_tick_rate))

		printk(err, clocksource_davinci.name);



	setup_sched_clock(davinci_read_sched_clock, 32,

			  davinci_clock_tick_rate);



	/* setup clockevent */

	clockevent_davinci.name = id_to_name[timers[TID_CLOCKEVENT].id];

	clockevent_davinci.mult = div_sc(davinci_clock_tick_rate, NSEC_PER_SEC,

arch/arm/mach-prima2/timer.c

+7 −14
Original line number Diff line number Diff line
@@ -18,6 +18,7 @@ 
#include <linux/of.h>

#include <linux/of_address.h>

#include <mach/map.h>

#include <asm/sched_clock.h>

#include <asm/mach/time.h>



#define SIRFSOC_TIMER_COUNTER_LO	0x0000
@@ -165,21 +166,9 @@ static struct irqaction sirfsoc_timer_irq = { 
};



/* Overwrite weak default sched_clock with more precise one */

unsigned long long notrace sched_clock(void)

static u32 notrace sirfsoc_read_sched_clock(void)

{

	static int is_mapped;



	/*

	 * sched_clock is called earlier than .init of sys_timer

	 * if we map timer memory in .init of sys_timer, system

	 * will panic due to illegal memory access

	 */

	if (!is_mapped) {

		sirfsoc_of_timer_map();

		is_mapped = 1;

	}



	return sirfsoc_timer_read(NULL) * (NSEC_PER_SEC / CLOCK_TICK_RATE);

	return (u32)(sirfsoc_timer_read(NULL) & 0xffffffff);

}



static void __init sirfsoc_clockevent_init(void)
@@ -210,6 +199,8 @@ static void __init sirfsoc_timer_init(void) 
	BUG_ON(rate < CLOCK_TICK_RATE);

	BUG_ON(rate % CLOCK_TICK_RATE);



	sirfsoc_of_timer_map();



	writel_relaxed(rate / CLOCK_TICK_RATE / 2 - 1, sirfsoc_timer_base + SIRFSOC_TIMER_DIV);

	writel_relaxed(0, sirfsoc_timer_base + SIRFSOC_TIMER_COUNTER_LO);

	writel_relaxed(0, sirfsoc_timer_base + SIRFSOC_TIMER_COUNTER_HI);
@@ -217,6 +208,8 @@ static void __init sirfsoc_timer_init(void) 


	BUG_ON(clocksource_register_hz(&sirfsoc_clocksource, CLOCK_TICK_RATE));



	setup_sched_clock(sirfsoc_read_sched_clock, 32, CLOCK_TICK_RATE);



	BUG_ON(setup_irq(sirfsoc_timer_irq.irq, &sirfsoc_timer_irq));



	sirfsoc_clockevent_init();

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