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sched: fix delay accounting performance regression

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fix delay accounting performance regression - those sched_clock()
calls are not needed.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Ingo Molnar 2007-10-15 17:00:08 +02:00
parent 30cfdcfc5f
commit 75d4ef16a6
1 changed files with 2 additions and 2 deletions
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4
kernel/sched_stats.h
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@ -129,7 +129,7 @@ rq_sched_info_depart(struct rq *rq, unsigned long long delta)
# define schedstat_set(var, val) do { } while (0) # define schedstat_set(var, val) do { } while (0)
#endif #endif
#if defined(CONFIG_SCHEDSTATS) || defined(CONFIG_TASK_DELAY_ACCT) #ifdef CONFIG_SCHEDSTATS
/* /*
* Called when a process is dequeued from the active array and given * Called when a process is dequeued from the active array and given
* the cpu. We should note that with the exception of interactive * the cpu. We should note that with the exception of interactive
@ -233,5 +233,5 @@ sched_info_switch(struct task_struct *prev, struct task_struct *next)
#else #else
#define sched_info_queued(t) do { } while (0) #define sched_info_queued(t) do { } while (0)
#define sched_info_switch(t, next) do { } while (0) #define sched_info_switch(t, next) do { } while (0)
#endif /* CONFIG_SCHEDSTATS || CONFIG_TASK_DELAY_ACCT */ #endif /* CONFIG_SCHEDSTATS */