Commit 9c34a704 authored by Lai Jiangshan's avatar Lai Jiangshan Committed by Tejun Heo
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workqueue: reuse the already calculated pwq in try_to_grab_pending() 



try_to_grab_pending() was re-calculating the associated pwq using
get_work_pwq() when it already has it cached in a local varible and
the association can't change.  Reuse the local variable instead.

This doesn't introduce any functional changes.

tj: Updated description.

Signed-off-by: default avatarLai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
parent 85327af6

kernel/workqueue.c

+1 −1
Original line number Diff line number Diff line
@@ -1225,7 +1225,7 @@ static int try_to_grab_pending(struct work_struct *work, bool is_dwork, 
			pwq_activate_delayed_work(work);



		list_del_init(&work->entry);

		pwq_dec_nr_in_flight(get_work_pwq(work), get_work_color(work));

		pwq_dec_nr_in_flight(pwq, get_work_color(work));



		/* work->data points to pwq iff queued, point to pool */

		set_work_pool_and_keep_pending(work, pool->id);