From: Lai Jiangshan <laijs@cn.fujitsu.com>
To: Tejun Heo <tj@kernel.org>, linux-kernel@vger.kernel.org
Cc: Lai Jiangshan <laijs@cn.fujitsu.com>
Subject: [PATCH 12/12] workqueue: avoid work_on_cpu() to interfere system_wq
Date: Thu, 27 Sep 2012 01:20:43 +0800 [thread overview]
Message-ID: <1348680043-5077-13-git-send-email-laijs@cn.fujitsu.com> (raw)
In-Reply-To: <1348680043-5077-1-git-send-email-laijs@cn.fujitsu.com>
We can't expect how long the work of work_on_cpu() will run.
So move it to system_long_wq to avoid it interfere system_wq.
Note:
The initial implement(2d3854a3) of work_on_cpu() uses its own workqueue.
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
---
kernel/workqueue.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index ccb1d60..c14d94c 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -3638,7 +3638,7 @@ long work_on_cpu(unsigned int cpu, long (*fn)(void *), void *arg)
struct work_for_cpu wfc = { .fn = fn, .arg = arg };
INIT_WORK_ONSTACK(&wfc.work, work_for_cpu_fn);
- schedule_work_on(cpu, &wfc.work);
+ queue_work_on(cpu, system_long_wq, &wfc.work);
flush_work(&wfc.work);
return wfc.ret;
}
--
1.7.7.6
prev parent reply other threads:[~2012-09-26 17:19 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-26 17:20 [PATCH 00/12] workqueue: simple cleanups Lai Jiangshan
2012-09-26 17:20 ` [PATCH 01/12] workqueue: add WORKER_RESCUER Lai Jiangshan
2012-09-26 18:07 ` Tejun Heo
2012-09-28 10:11 ` Lai Jiangshan
2012-09-26 17:20 ` [PATCH 02/12] workqueue: disallow set_cpus_allowed_ptr() from work item Lai Jiangshan
2012-09-26 18:12 ` Tejun Heo
2012-09-26 17:20 ` [PATCH 03/12] workqueue: remove WORKER_PREP from rescuer Lai Jiangshan
2012-09-26 18:24 ` Tejun Heo
2012-09-28 10:04 ` Lai Jiangshan
2012-09-30 7:39 ` Tejun Heo
2012-09-26 17:20 ` [PATCH 04/12] workqueue: simplify is_chained_work() Lai Jiangshan
2012-09-26 18:28 ` Tejun Heo
2012-09-28 9:52 ` Lai Jiangshan
2012-09-30 7:32 ` Tejun Heo
2012-09-26 17:20 ` [PATCH 05/12] workqueue: don't wake up other workers in rescuer Lai Jiangshan
2012-09-26 18:34 ` Tejun Heo
2012-09-28 10:18 ` Lai Jiangshan
2012-09-26 17:20 ` [PATCH 06/12] workqueue: destroy_worker() can only destory idle worker not just created worker Lai Jiangshan
2012-09-26 18:35 ` Tejun Heo
2012-09-26 17:20 ` [PATCH 07/12] workqueue: remove WORKER_STARTED Lai Jiangshan
2012-09-26 18:36 ` Tejun Heo
2012-09-28 9:52 ` Lai Jiangshan
2012-09-26 17:20 ` [PATCH 08/12] workqueue: fix comments of insert_work() Lai Jiangshan
2012-09-26 17:20 ` [PATCH 09/12] workqueue: declare system_highpri_wq Lai Jiangshan
2012-09-26 17:20 ` [PATCH 10/12] cpu-hotplug.txt: fix comments of work_on_cpu() Lai Jiangshan
2012-09-26 17:20 ` [RFC PATCH 11/12] workqueue: add WQ_CPU_INTENSIVE to system_long_wq Lai Jiangshan
2012-09-26 18:38 ` Tejun Heo
2012-09-28 8:06 ` Lai Jiangshan
2012-09-30 7:22 ` Tejun Heo
2012-09-26 17:20 ` Lai Jiangshan [this message]
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