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workqueue: wake regular worker if need_more_worker() when rescuer leave the pool 

We don't need to wake up regular worker when nr_running==1,
so need_more_worker() is sufficient here.

And need_more_worker() gives us better readability due to the name of
"keep_working()" implies the rescuer should keep working now but
the rescuer is actually leaving.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Lai Jiangshan 2014-07-16 14:56:36 +08:00 committed by Tejun Heo
parent f7537df520
commit d8ca83e68c
1 changed files with 2 additions and 2 deletions
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4
kernel/workqueue.c
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@ -2313,11 +2313,11 @@ static int rescuer_thread(void *__rescuer)
put_pwq(pwq);
/*
* Leave this pool. If keep_working() is %true, notify a
* Leave this pool. If need_more_worker() is %true, notify a
* regular worker; otherwise, we end up with 0 concurrency
* and stalling the execution.
*/
if (keep_working(pool))
if (need_more_worker(pool))
wake_up_worker(pool);
rescuer->pool = NULL;