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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2008-01-25 21:08:31 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-01-25 21:08:31 +0100 |
| commit | 2d44ae4d7135b9aee26439b3523b43473381bc5f (patch) | |
| tree | ba3afc0f03142d26f9238974dab5b99bf1dca1db /kernel/time/tick-sched.c | |
| parent | sched: rt throttling vs no_hz (diff) | |
| download | linux-2d44ae4d7135b9aee26439b3523b43473381bc5f.tar.xz linux-2d44ae4d7135b9aee26439b3523b43473381bc5f.zip | |
hrtimer: clean up cpu->base locking tricks
In order to more easily allow for the scheduler to use timers, clean up
the locking a bit.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/time/tick-sched.c')
| -rw-r--r-- | kernel/time/tick-sched.c | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c index 5f9fb645b725..1a21b6fdb674 100644 --- a/kernel/time/tick-sched.c +++ b/kernel/time/tick-sched.c @@ -514,7 +514,6 @@ static enum hrtimer_restart tick_sched_timer(struct hrtimer *timer) { struct tick_sched *ts = container_of(timer, struct tick_sched, sched_timer); - struct hrtimer_cpu_base *base = timer->base->cpu_base; struct pt_regs *regs = get_irq_regs(); ktime_t now = ktime_get(); int cpu = smp_processor_id(); @@ -552,15 +551,8 @@ static enum hrtimer_restart tick_sched_timer(struct hrtimer *timer) touch_softlockup_watchdog(); ts->idle_jiffies++; } - /* - * update_process_times() might take tasklist_lock, hence - * drop the base lock. sched-tick hrtimers are per-CPU and - * never accessible by userspace APIs, so this is safe to do. - */ - spin_unlock(&base->lock); update_process_times(user_mode(regs)); profile_tick(CPU_PROFILING); - spin_lock(&base->lock); } /* Do not restart, when we are in the idle loop */ |