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authorOleg Nesterov <oleg@tv-sign.ru>2008-10-18 20:28:24 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-10-20 08:52:39 -0700
commit293adee601bcd4cdb5076a9bda187137de17e96e (patch)
treed7a67f8064f4db0f3b86855f3356c4037eff5e67 /kernel
parent656eb2cd5da153762f2e8419ca117ce12ef522c3 (diff)
downloadlinux-linaro-293adee601bcd4cdb5076a9bda187137de17e96e.tar.gz
kthread_bind: use wait_task_inactive(TASK_UNINTERRUPTIBLE)
Now that wait_task_inactive(task, state) checks task->state == state, we can simplify the code and make this debugging check more robust. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Cc: Roland McGrath <roland@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/kthread.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/kernel/kthread.c b/kernel/kthread.c
index 96cff2f8710..14ec64fe175 100644
--- a/kernel/kthread.c
+++ b/kernel/kthread.c
@@ -171,12 +171,11 @@ EXPORT_SYMBOL(kthread_create);
*/
void kthread_bind(struct task_struct *k, unsigned int cpu)
{
- if (k->state != TASK_UNINTERRUPTIBLE) {
+ /* Must have done schedule() in kthread() before we set_task_cpu */
+ if (!wait_task_inactive(k, TASK_UNINTERRUPTIBLE)) {
WARN_ON(1);
return;
}
- /* Must have done schedule() in kthread() before we set_task_cpu */
- wait_task_inactive(k, 0);
set_task_cpu(k, cpu);
k->cpus_allowed = cpumask_of_cpu(cpu);
k->rt.nr_cpus_allowed = 1;