linux-kernel - [RFC PATCH 11/12] workqueue: add WQ_CPU_INTENSIVE to system_long

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Message-Id: <1348680043-5077-12-git-send-email-laijs@cn.fujitsu.com>
Date:	Thu, 27 Sep 2012 01:20:42 +0800
From:	Lai Jiangshan <laijs@...fujitsu.com>
To:	Tejun Heo <tj@...nel.org>, linux-kernel@...r.kernel.org
Cc:	Lai Jiangshan <laijs@...fujitsu.com>
Subject: [RFC PATCH 11/12] workqueue: add WQ_CPU_INTENSIVE to system_long_wq

works in system_long_wq will be running long.
add WQ_CPU_INTENSIVE to system_long_wq to avoid these kinds of works occupy
the running wokers which delay the normal works.

if system_long_wq is designed for only sleep-long works, not running-long works,
this patch makes no sense.

Signed-off-by: Lai Jiangshan <laijs@...fujitsu.com>
---
 kernel/workqueue.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 89fd1b2..ccb1d60 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -3850,7 +3850,7 @@ static int __init init_workqueues(void)
 
 	system_wq = alloc_workqueue("events", 0, 0);
 	system_highpri_wq = alloc_workqueue("events_highpri", WQ_HIGHPRI, 0);
-	system_long_wq = alloc_workqueue("events_long", 0, 0);
+	system_long_wq = alloc_workqueue("events_long", WQ_CPU_INTENSIVE, 0);
 	system_unbound_wq = alloc_workqueue("events_unbound", WQ_UNBOUND,
 					    WQ_UNBOUND_MAX_ACTIVE);
 	system_freezable_wq = alloc_workqueue("events_freezable",
-- 
1.7.7.6

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