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authorTejun Heo <tj@kernel.org>2010-07-02 10:03:51 +0200
committerTejun Heo <tj@kernel.org>2010-07-02 10:03:51 +0200
commitd313dd85ad846bc768d58e9ceb28588f917f4c9a (patch)
treeb61b92f270b9fedc577e8196d605c93d695052d4 /kernel/workqueue.c
parenta1e453d2799760ecf2e09ecd45b80edbe7ff540e (diff)
downloadlwn-d313dd85ad846bc768d58e9ceb28588f917f4c9a.tar.gz
lwn-d313dd85ad846bc768d58e9ceb28588f917f4c9a.zip
workqueue: fix worker management invocation without pending works
When there's no pending work to do, worker_thread() goes back to sleep after waking up without checking whether worker management is necessary. This means that idle worker exit requests can be ignored if the gcwq stays empty. Fix it by making worker_thread() always check whether worker management is necessary before going to sleep. Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'kernel/workqueue.c')
-rw-r--r--kernel/workqueue.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 0c485a538099..2eb9fbddf5c6 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -1832,10 +1832,10 @@ recheck:
} while (keep_working(gcwq));
worker_set_flags(worker, WORKER_PREP, false);
-
+sleep:
if (unlikely(need_to_manage_workers(gcwq)) && manage_workers(worker))
goto recheck;
-sleep:
+
/*
* gcwq->lock is held and there's no work to process and no
* need to manage, sleep. Workers are woken up only while