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Merge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

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* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  sched: Simplify sys_sched_rr_get_interval() system call
  sched: Fix potential NULL derference of doms_cur
  sched: Fix raciness in runqueue_is_locked()
  sched: Re-add lost cpu_allowed check to sched_fair.c::select_task_rq_fair()
  sched: Remove unneeded indentation in sched_fair.c::place_entity()
This commit is contained in:
Linus Torvalds 2009-09-21 09:06:17 -07:00
commit 8e4bc3dd2c
6 changed files with 76 additions and 50 deletions
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8
kernel/trace/trace.c
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@ -268,12 +268,18 @@ static DEFINE_SPINLOCK(tracing_start_lock);
*/
void trace_wake_up(void)
{
int cpu;
if (trace_flags & TRACE_ITER_BLOCK)
return;
/*
* The runqueue_is_locked() can fail, but this is the best we
* have for now:
*/
if (!(trace_flags & TRACE_ITER_BLOCK) && !runqueue_is_locked())
cpu = get_cpu();
if (!runqueue_is_locked(cpu))
wake_up(&trace_wait);
put_cpu();
}
static int __init set_buf_size(char *str)