From: Oleg Nesterov <oleg@tv-sign.ru>
Date: Mon, 21 May 2007 20:51:29 +0000 (-0400)
Subject: [PATCH] make freezeable workqueues singlethread
X-Git-Tag: v2.6.20.16~24
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ce9eb635d4de5404582046329bc7e74c2a0546ae;p=thirdparty%2Fkernel%2Fstable.git

[PATCH] make freezeable workqueues singlethread

It is a known fact that freezeable multithreaded workqueues doesn't like
CPU_DEAD. We keep them only for the incoming CPU-hotplug rework.

Sadly, we can't just kill create_freezeable_workqueue() right now, make
them singlethread.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Gautham R Shenoy <ego@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h
index 2a7b38d870186..1a76bda6563f9 100644
--- a/include/linux/workqueue.h
+++ b/include/linux/workqueue.h
@@ -162,7 +162,7 @@ extern struct workqueue_struct *__create_workqueue(const char *name,
 						    int singlethread,
 						    int freezeable);
 #define create_workqueue(name) __create_workqueue((name), 0, 0)
-#define create_freezeable_workqueue(name) __create_workqueue((name), 0, 1)
+#define create_freezeable_workqueue(name) __create_workqueue((name), 1, 1)
 #define create_singlethread_workqueue(name) __create_workqueue((name), 1, 0)
 
 extern void destroy_workqueue(struct workqueue_struct *wq);