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| author | Baruch Siach <baruch@tkos.co.il> | 2013-06-17 11:29:46 +0300 |
|---|---|---|
| committer | Chris Zankel <chris@zankel.net> | 2013-07-08 01:11:38 -0700 |
| commit | e3f432919feb4f26fe837472669e397ba8e8fccb (patch) | |
| tree | 8d9555828ab0739290f63f696cf88ca2d26def8b /arch/xtensa | |
| parent | 925f5532e83bfe236b4f69ba4265c19663cfa9c7 (diff) | |
| download | linux-e3f432919feb4f26fe837472669e397ba8e8fccb.tar.bz2 | |
xtensa: ccount based sched_clock
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Chris Zankel <chris@zankel.net>
Diffstat (limited to 'arch/xtensa')
| -rw-r--r-- | arch/xtensa/Kconfig | 1 | ||||
| -rw-r--r-- | arch/xtensa/kernel/time.c | 8 |
2 files changed, 9 insertions, 0 deletions
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig index dadcf824a5cb..8852c0d35834 100644 --- a/arch/xtensa/Kconfig +++ b/arch/xtensa/Kconfig @@ -11,6 +11,7 @@ config XTENSA select VIRT_TO_BUS select GENERIC_IRQ_SHOW select GENERIC_CPU_DEVICES + select GENERIC_SCHED_CLOCK select MODULES_USE_ELF_RELA select GENERIC_PCI_IOMAP select ARCH_WANT_IPC_PARSE_VERSION diff --git a/arch/xtensa/kernel/time.c b/arch/xtensa/kernel/time.c index ece4f9588625..bdbb17312526 100644 --- a/arch/xtensa/kernel/time.c +++ b/arch/xtensa/kernel/time.c @@ -24,6 +24,7 @@ #include <linux/profile.h> #include <linux/delay.h> #include <linux/irqdomain.h> +#include <linux/sched_clock.h> #include <asm/timex.h> #include <asm/platform.h> @@ -37,6 +38,11 @@ static cycle_t ccount_read(struct clocksource *cs) return (cycle_t)get_ccount(); } +static u32 notrace ccount_sched_clock_read(void) +{ + return get_ccount(); +} + static struct clocksource ccount_clocksource = { .name = "ccount", .rating = 200, @@ -134,6 +140,8 @@ void __init time_init(void) 0xffffffff); setup_irq(ccount_timer.evt.irq, &timer_irqaction); ccount_timer.irq_enabled = 1; + + setup_sched_clock(ccount_sched_clock_read, 32, ccount_freq); } /* |