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authorTony Breeds <tony@bakeyournoodle.com>2007-09-21 13:26:03 +1000
committerPaul Mackerras <paulus@samba.org>2007-10-03 15:44:34 +1000
commit1ad749980a5fda46f7ec920d8409ddcc89b38714 (patch)
tree3c1b28f1f6e03660c36e6f320fce54e4e5a1eb5e /arch/powerpc/platforms/iseries
parentd831d0b83f205888f4be4dee0a074ad67ef809b3 (diff)
[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 'arch/powerpc/platforms/iseries')
-rw-r--r--arch/powerpc/platforms/iseries/setup.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/iseries/setup.c b/arch/powerpc/platforms/iseries/setup.c
index fad493e29d3..37ae07ee54a 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();