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author | Ingo Molnar <mingo@elte.hu> | 2007-07-09 16:51:59 (GMT) |
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committer | Ingo Molnar <mingo@elte.hu> | 2007-07-09 16:51:59 (GMT) |
commit | 1b9f19c2125dd1021b9327111dc40b14b557ee12 (patch) | |
tree | 139bfbf6f43fa957821f95ebc9c5f1d43b177271 /kernel | |
parent | bb29ab26863c022743143f27956cc0ca362f258c (diff) | |
download | linux-1b9f19c2125dd1021b9327111dc40b14b557ee12.tar.xz |
sched: turn on the use of unstable events
make use of sched-clock-unstable events.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel')
-rw-r--r-- | kernel/sched.c | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/kernel/sched.c b/kernel/sched.c index 6150cd7..2d23450 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -68,13 +68,6 @@ unsigned long long __attribute__((weak)) sched_clock(void) } /* - * 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 ], * and back. @@ -630,6 +623,20 @@ static inline struct rq *this_rq_lock(void) } /* + * 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'. * * On UP this means the setting of the need_resched flag, on SMP it |