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

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* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  sched: Check if lowest_mask is initialized in find_lowest_rq()
  sched: Fix need_resched() when checking peempt
This commit is contained in:
Linus Torvalds 2011-06-15 21:45:18 -07:00
commit a1b6ae8ed0
1 changed files with 5 additions and 1 deletions
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6
kernel/sched_rt.c
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@ -1096,7 +1096,7 @@ static void check_preempt_curr_rt(struct rq *rq, struct task_struct *p, int flag
* to move current somewhere else, making room for our non-migratable
* task.
*/
if (p->prio == rq->curr->prio && !need_resched())
if (p->prio == rq->curr->prio && !test_tsk_need_resched(rq->curr))
check_preempt_equal_prio(rq, p);
#endif
}
@ -1239,6 +1239,10 @@ static int find_lowest_rq(struct task_struct *task)
int this_cpu = smp_processor_id();
int cpu = task_cpu(task);
/* Make sure the mask is initialized first */
if (unlikely(!lowest_mask))
return -1;
if (task->rt.nr_cpus_allowed == 1)
return -1; /* No other targets possible */