[PATCH] Consolidate default sched_clock()
Signed-off-by: Alexey Dobriyan <adobriyan@openvz.org> --- arch/alpha/kernel/time.c | 11 ----------- arch/arm/kernel/time.c | 10 ---------- arch/arm26/kernel/time.c | 8 -------- arch/avr32/kernel/time.c | 9 --------- arch/cris/kernel/time.c | 8 -------- arch/h8300/kernel/time.c | 6 ------ arch/m32r/kernel/time.c | 8 -------- arch/m68k/kernel/time.c | 9 --------- arch/m68knommu/kernel/time.c | 9 --------- arch/mips/kernel/time.c | 5 ----- arch/parisc/kernel/time.c | 11 ----------- arch/sh/kernel/time.c | 8 -------- arch/sh64/kernel/time.c | 9 --------- arch/sparc/kernel/time.c | 9 --------- arch/v850/kernel/time.c | 8 -------- arch/xtensa/kernel/time.c | 9 --------- kernel/sched.c | 10 ++++++++++ 17 files changed, 10 insertions(+), 137 deletions(-) --- a/arch/alpha/kernel/time.c +++ b/arch/alpha/kernel/time.c @@ -91,17 +91,6 @@ static inline __u32 rpcc(void) } /* - * Scheduler clock - returns current time in nanosec units. - * - * Copied from ARM code for expediency... ;-} - */ -unsigned long long sched_clock(void) -{ - return (unsigned long long)jiffies * (1000000000 / HZ); -} - - -/* * timer_interrupt() needs to keep up the real-time clock, * as well as call the "do_timer()" routine every clocktick */ --- a/arch/arm/kernel/time.c +++ b/arch/arm/kernel/time.c @@ -75,16 +75,6 @@ static unsigned long dummy_gettimeoffset } #endif -/* - * Scheduler clock - returns current time in nanosec units. - * This is the default implementation. Sub-architecture - * implementations can override this. - */ -unsigned long long __attribute__((weak)) sched_clock(void) -{ - return (unsigned long long)jiffies * (1000000000 / HZ); -} - static unsigned long next_rtc_update; /* --- a/arch/arm26/kernel/time.c +++ b/arch/arm26/kernel/time.c @@ -89,14 +89,6 @@ static unsigned long gettimeoffset(void) return (offset + LATCH/2) / LATCH; } -/* - * Scheduler clock - returns current time in nanosec units. - */ -unsigned long long sched_clock(void) -{ - return (unsigned long long)jiffies * (1000000000 / HZ); -} - static unsigned long next_rtc_update; /* --- a/arch/avr32/kernel/time.c +++ b/arch/avr32/kernel/time.c @@ -110,15 +110,6 @@ static void avr32_hpt_init(unsigned int } /* - * Scheduler clock - returns current time in nanosec units. - */ -unsigned long long sched_clock(void) -{ - /* There must be better ways...? */ - return (unsigned long long)jiffies * (1000000000 / HZ); -} - -/* * local_timer_interrupt() does profiling and process accounting on a * per-CPU basis. * --- a/arch/cris/kernel/time.c +++ b/arch/cris/kernel/time.c @@ -217,14 +217,6 @@ #if CONFIG_PROFILING #endif } -/* - * Scheduler clock - returns current time in nanosec units. - */ -unsigned long long sched_clock(void) -{ - return (unsigned long long)jiffies * (1000000000 / HZ); -} - static int __init init_udelay(void) { --- a/arch/h8300/kernel/time.c +++ b/arch/h8300/kernel/time.c @@ -118,9 +118,3 @@ int do_settimeofday(struct timespec *tv) } EXPORT_SYMBOL(do_settimeofday); - -unsigned long long sched_clock(void) -{ - return (unsigned long long)jiffies * (1000000000 / HZ); - -} --- a/arch/m32r/kernel/time.c +++ b/arch/m32r/kernel/time.c @@ -286,11 +286,3 @@ #else #error no chip configuration #endif } - -/* - * Scheduler clock - returns current time in nanosec units. - */ -unsigned long long sched_clock(void) -{ - return (unsigned long long)jiffies * (1000000000 / HZ); -} --- a/arch/m68k/kernel/time.c +++ b/arch/m68k/kernel/time.c @@ -159,12 +159,3 @@ int do_settimeofday(struct timespec *tv) } EXPORT_SYMBOL(do_settimeofday); - -/* - * Scheduler clock - returns current time in ns units. - */ -unsigned long long sched_clock(void) -{ - return (unsigned long long)jiffies*(1000000000/HZ); -} - --- a/arch/m68knommu/kernel/time.c +++ b/arch/m68knommu/kernel/time.c @@ -173,13 +173,4 @@ int do_settimeofday(struct timespec *tv) clock_was_set(); return 0; } - -/* - * Scheduler clock - returns current time in nanosec units. - */ -unsigned long long sched_clock(void) -{ - return (unsigned long long)jiffies * (1000000000 / HZ); -} - EXPORT_SYMBOL(do_settimeofday); --- a/arch/mips/kernel/time.c +++ b/arch/mips/kernel/time.c @@ -457,8 +457,3 @@ EXPORT_SYMBOL(rtc_lock); EXPORT_SYMBOL(to_tm); EXPORT_SYMBOL(rtc_mips_set_time); EXPORT_SYMBOL(rtc_mips_get_time); - -unsigned long long sched_clock(void) -{ - return (unsigned long long)jiffies*(1000000000/HZ); -} --- a/arch/parisc/kernel/time.c +++ b/arch/parisc/kernel/time.c @@ -288,17 +288,6 @@ do_settimeofday (struct timespec *tv) } EXPORT_SYMBOL(do_settimeofday); -/* - * XXX: We can do better than this. - * Returns nanoseconds - */ - -unsigned long long sched_clock(void) -{ - return (unsigned long long)jiffies * (1000000000 / HZ); -} - - void __init start_cpu_itimer(void) { unsigned int cpu = smp_processor_id(); --- a/arch/sh/kernel/time.c +++ b/arch/sh/kernel/time.c @@ -41,14 +41,6 @@ static int null_rtc_set_time(const time_ void (*rtc_sh_get_time)(struct timespec *) = null_rtc_get_time; int (*rtc_sh_set_time)(const time_t) = null_rtc_set_time; -/* - * Scheduler clock - returns current time in nanosec units. - */ -unsigned long long __attribute__ ((weak)) sched_clock(void) -{ - return (unsigned long long)jiffies * (1000000000 / HZ); -} - #ifndef CONFIG_GENERIC_TIME void do_gettimeofday(struct timeval *tv) { --- a/arch/sh64/kernel/time.c +++ b/arch/sh64/kernel/time.c @@ -579,12 +579,3 @@ #endif asm __volatile__ ("nop"); panic("Unexpected wakeup!\n"); } - -/* - * Scheduler clock - returns current time in nanosec units. - */ -unsigned long long sched_clock(void) -{ - return (unsigned long long)jiffies * (1000000000 / HZ); -} - --- a/arch/sparc/kernel/time.c +++ b/arch/sparc/kernel/time.c @@ -436,15 +436,6 @@ static inline unsigned long do_gettimeof return (*master_l10_counter >> 10) & 0x1fffff; } -/* - * Returns nanoseconds - * XXX This is a suboptimal implementation. - */ -unsigned long long sched_clock(void) -{ - return (unsigned long long)jiffies * (1000000000 / HZ); -} - /* Ok, my cute asm atomicity trick doesn't work anymore. * There are just too many variables that need to be protected * now (both members of xtime, et al.) --- a/arch/v850/kernel/time.c +++ b/arch/v850/kernel/time.c @@ -28,14 +28,6 @@ #include "mach.h" #define TICK_SIZE (tick_nsec / 1000) /* - * Scheduler clock - returns current time in nanosec units. - */ -unsigned long long sched_clock(void) -{ - return (unsigned long long)jiffies * (1000000000 / HZ); -} - -/* * timer_interrupt() needs to keep up the real-time clock, * as well as call the "do_timer()" routine every clocktick */ --- a/arch/xtensa/kernel/time.c +++ b/arch/xtensa/kernel/time.c @@ -38,15 +38,6 @@ #endif unsigned int last_ccount_stamp; static long last_rtc_update = 0; -/* - * Scheduler clock - returns current tim in nanosec units. - */ - -unsigned long long sched_clock(void) -{ - return (unsigned long long)jiffies * (1000000000 / HZ); -} - static irqreturn_t timer_interrupt(int irq, void *dev_id); static struct irqaction timer_irqaction = { .handler = timer_interrupt, --- a/kernel/sched.c +++ b/kernel/sched.c @@ -57,6 +57,16 @@ #include <asm/tlb.h> #include <asm/unistd.h> /* + * Scheduler clock - returns current time in nanosec units. + * This is default implementation. + * Architectures and sub-architectures can override this. + */ +unsigned long long __attribute__((weak)) sched_clock(void) +{ + return (unsigned long long)jiffies * (1000000000 / HZ); +} + +/* * Convert user-nice values [ -20 ... 0 ... 19 ] * to static priority [ MAX_RT_PRIO..MAX_PRIO-1 ], * and back.
Re: [PATCH] Consolidate default sched_clock()
* Alexey Dobriyan <adobriyan@openvz.org> wrote: > Signed-off-by: Alexey Dobriyan <adobriyan@openvz.org> looks good to me. Acked-by: Ingo Molnar <mingo@elte.hu> Ingo