linux-kernel - [PATCH 1/1] PM: Thaws refrigerated and to be exited kernel threads

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Date:	Fri, 6 Nov 2009 15:06:02 +0530
From:	"Dasgupta, Romit" <romit@...com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>, "pavel@....cz" <pavel@....cz>
CC:	"linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-pm@...ts.linux-foundation.org" 
	<linux-pm@...ts.linux-foundation.org>
Subject: [PATCH 1/1] PM: Thaws refrigerated and to be exited kernel threads 

Kicks out a frozen thread from the refrigerator when an active thread has
invoked kthread_stop on the frozen thread.

Signed-off-by: Romit Dasgupta <romit@...com>
---

diff --git a/kernel/freezer.c b/kernel/freezer.c
index bd1d42b..c28dbe8 100644
--- a/kernel/freezer.c
+++ b/kernel/freezer.c
@@ -9,6 +9,7 @@
 #include <linux/module.h>
 #include <linux/syscalls.h>
 #include <linux/freezer.h>
+#include <linux/kthread.h>
 
 /*
  * freezing is complete, mark current process as frozen
@@ -49,7 +50,7 @@ void refrigerator(void)
 
 	for (;;) {
 		set_current_state(TASK_UNINTERRUPTIBLE);
-		if (!frozen(current))
+		if (!frozen(current) || (!current->mm && kthread_should_stop()))
 			break;
 		schedule();
 	}
--
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