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sched: turn on the use of unstable events 

make use of sched-clock-unstable events.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2007-07-09 18:51:59 +02:00
parent bb29ab2686
commit 1b9f19c212
1 changed files with 14 additions and 7 deletions
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21
kernel/sched.c
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@ -67,13 +67,6 @@ unsigned long long __attribute__((weak)) sched_clock(void)
return (unsigned long long)jiffies * (1000000000 / HZ);
}
/*
* CPU frequency is/was unstable - start new by setting prev_clock_raw:
*/
void sched_clock_unstable_event(void)
{
}
/*
* Convert user-nice values [ -20 ... 0 ... 19 ]
* to static priority [ MAX_RT_PRIO..MAX_PRIO-1 ],
@ -629,6 +622,20 @@ static inline struct rq *this_rq_lock(void)
return rq;
}
/*
* CPU frequency is/was unstable - start new by setting prev_clock_raw:
*/
void sched_clock_unstable_event(void)
{
unsigned long flags;
struct rq *rq;
rq = task_rq_lock(current, &flags);
rq->prev_clock_raw = sched_clock();
rq->clock_unstable_events++;
task_rq_unlock(rq, &flags);
}
/*
* resched_task - mark a task 'to be rescheduled now'.
*