xtensa: ccount based sched_clock

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Chris Zankel <chris@zankel.net>
This commit is contained in:
Baruch Siach 2013-06-17 11:29:46 +03:00 committed by Chris Zankel
parent 925f5532e8
commit e3f432919f
2 changed files with 9 additions and 0 deletions

View File

@ -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

View File

@ -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);
}
/*