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x86: improve default idle

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Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2008-04-02 13:23:22 +02:00
parent f5149a49f9
commit 13af4836b3
2 changed files with 0 additions and 16 deletions
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8
arch/x86/kernel/process_32.c
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@ -113,16 +113,8 @@ void default_idle(void)
local_irq_disable(); local_irq_disable();
if (!need_resched()) { if (!need_resched()) {
ktime_t t0, t1;
u64 t0n, t1n;
t0 = ktime_get();
t0n = ktime_to_ns(t0);
safe_halt(); /* enables interrupts racelessly */ safe_halt(); /* enables interrupts racelessly */
local_irq_disable(); local_irq_disable();
t1 = ktime_get();
t1n = ktime_to_ns(t1);
sched_clock_idle_wakeup_event(t1n - t0n);
} }
local_irq_enable(); local_irq_enable();
current_thread_info()->status |= TS_POLLING; current_thread_info()->status |= TS_POLLING;

8
arch/x86/kernel/process_64.c
View File

@ -107,16 +107,8 @@ void default_idle(void)
smp_mb(); smp_mb();
local_irq_disable(); local_irq_disable();
if (!need_resched()) { if (!need_resched()) {
ktime_t t0, t1;
u64 t0n, t1n;
t0 = ktime_get();
t0n = ktime_to_ns(t0);
safe_halt(); /* enables interrupts racelessly */ safe_halt(); /* enables interrupts racelessly */
local_irq_disable(); local_irq_disable();
t1 = ktime_get();
t1n = ktime_to_ns(t1);
sched_clock_idle_wakeup_event(t1n - t0n);
} }
local_irq_enable(); local_irq_enable();
current_thread_info()->status |= TS_POLLING; current_thread_info()->status |= TS_POLLING;