Commit f333fdc9 authored by Mike Galbraith's avatar Mike Galbraith Committed by Ingo Molnar
Browse files

sched: make !hrtick faster 



it is safe to ignore timers and flags when the feature is disabled.

Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 45c01e82

kernel/sched.c

+5 −3
Original line number Diff line number Diff line
@@ -4134,7 +4134,7 @@ asmlinkage void __sched schedule(void) 
	struct task_struct *prev, *next;

	unsigned long *switch_count;

	struct rq *rq;

	int cpu;

	int cpu, hrtick = sched_feat(HRTICK);



need_resched:

	preempt_disable();
@@ -4149,6 +4149,7 @@ asmlinkage void __sched schedule(void) 


	schedule_debug(prev);



	if (hrtick)

		hrtick_clear(rq);



	/*
@@ -4197,6 +4198,7 @@ asmlinkage void __sched schedule(void) 
	} else

		spin_unlock_irq(&rq->lock);



	if (hrtick)

		hrtick_set(rq);



	if (unlikely(reacquire_kernel_lock(current) < 0))