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authorLai Jiangshan <laijs@cn.fujitsu.com>2014-07-11 00:11:13 +0800
committerMoyster <oysterized@gmail.com>2017-12-05 18:05:44 +0100
commit8aba9fb1a6ec968ac88a984a1fd0b373369ed54d (patch)
tree7075074d117f649d53a33eb93b7826b4c9ec3fec
parentcc6552917729a821221fd3a259020e496b6b4189 (diff)
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: Lai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by: Tejun Heo <tj@kernel.org>
-rw-r--r--kernel/workqueue.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 893aac8b8..ee9aabf10 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -1278,7 +1278,7 @@ 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);