diff options
| author |   Tony Breeds <tony@bakeyournoodle.com> | 2007-09-21 13:26:03 +1000 |
|---|---|---|
| committer |   Paul Mackerras <paulus@samba.org> | 2007-10-03 15:44:34 +1000 |
| commit | 1ad749980a5fda46f7ec920d8409ddcc89b38714 (patch) | |
| tree | 3c1b28f1f6e03660c36e6f320fce54e4e5a1eb5e /arch/powerpc/platforms/iseries/setup.c | |
| parent | [POWERPC] Implement clockevents driver for powerpc (diff) | |
| download | linux-dev-1ad749980a5fda46f7ec920d8409ddcc89b38714.tar.xz linux-dev-1ad749980a5fda46f7ec920d8409ddcc89b38714.zip | |
[POWERPC] Enable tickless idle and high res timers for powerpc
Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to '')
| -rw-r--r-- | arch/powerpc/platforms/iseries/setup.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/iseries/setup.c b/arch/powerpc/platforms/iseries/setup.c index fad493e29d37..37ae07ee54a9 100644 --- a/arch/powerpc/platforms/iseries/setup.c +++ b/arch/powerpc/platforms/iseries/setup.c @@ -26,6 +26,8 @@ #include <linux/major.h> #include <linux/root_dev.h> #include <linux/kernel.h> +#include <linux/hrtimer.h> +#include <linux/tick.h> #include <asm/processor.h> #include <asm/machdep.h> @@ -561,6 +563,7 @@ static void yield_shared_processor(void) static void iseries_shared_idle(void) { while (1) { + tick_nohz_stop_sched_tick(); while (!need_resched() && !hvlpevent_is_pending()) { local_irq_disable(); ppc64_runlatch_off(); @@ -574,6 +577,7 @@ static void iseries_shared_idle(void) } ppc64_runlatch_on(); + tick_nohz_restart_sched_tick(); if (hvlpevent_is_pending()) process_iSeries_events(); @@ -589,6 +593,7 @@ static void iseries_dedicated_idle(void) set_thread_flag(TIF_POLLING_NRFLAG); while (1) { + tick_nohz_stop_sched_tick(); if (!need_resched()) { while (!need_resched()) { ppc64_runlatch_off(); @@ -605,6 +610,7 @@ static void iseries_dedicated_idle(void) } ppc64_runlatch_on(); + tick_nohz_restart_sched_tick(); preempt_enable_no_resched(); schedule(); preempt_disable(); |