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Commit 13af4836 authored by Ingo Molnar's avatar Ingo Molnar
Browse files

x86: improve default idle 



Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent f5149a49

arch/x86/kernel/process_32.c

+0 −8
Original line number Diff line number Diff line
@@ -113,16 +113,8 @@ void default_idle(void) 


		local_irq_disable();

		if (!need_resched()) {

			ktime_t t0, t1;

			u64 t0n, t1n;



			t0 = ktime_get();

			t0n = ktime_to_ns(t0);

			safe_halt();	/* enables interrupts racelessly */

			local_irq_disable();

			t1 = ktime_get();

			t1n = ktime_to_ns(t1);

			sched_clock_idle_wakeup_event(t1n - t0n);

		}

		local_irq_enable();

		current_thread_info()->status |= TS_POLLING;

arch/x86/kernel/process_64.c

+0 −8
Original line number Diff line number Diff line
@@ -107,16 +107,8 @@ void default_idle(void) 
	smp_mb();

	local_irq_disable();

	if (!need_resched()) {

		ktime_t t0, t1;

		u64 t0n, t1n;



		t0 = ktime_get();

		t0n = ktime_to_ns(t0);

		safe_halt();	/* enables interrupts racelessly */

		local_irq_disable();

		t1 = ktime_get();

		t1n = ktime_to_ns(t1);

		sched_clock_idle_wakeup_event(t1n - t0n);

	}

	local_irq_enable();

	current_thread_info()->status |= TS_POLLING;