linux-kernel - [Patch 1/21] Reuse freezable() predicate

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Message-ID: <20101214152459.581ec3f0@suzukikp>
Date:	Tue, 14 Dec 2010 15:24:59 +0530
From:	"Suzuki K. Poulose" <suzuki@...ibm.com>
To:	"Suzuki K. Poulose" <suzuki@...ibm.com>
Cc:	linux-kernel@...r.kernel.org,
	Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com>,
	Christoph Hellwig <hch@....de>,
	Masami Hiramatsu <mhiramat@...hat.com>,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	Daisuke HATAYAMA <d.hatayama@...fujitsu.com>,
	Andi Kleen <andi@...stfloor.org>,
	Roland McGrath <roland@...hat.com>,
	Amerigo Wang <amwang@...hat.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Oleg Nesterov <oleg@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [Patch 1/21] Reuse freezable() predicate

Export the freezable() predicate.

Signed-off-by: Suzuki K. Poulose <suzuki@...ibm.com>
---
 include/linux/freezer.h |   12 ++++++++++++
 kernel/power/process.c  |    9 ---------
 2 files changed, 12 insertions(+), 9 deletions(-)

Index: linux-2.6.36-rc7/include/linux/freezer.h
===================================================================
--- linux-2.6.36-rc7.orig/include/linux/freezer.h
+++ linux-2.6.36-rc7/include/linux/freezer.h
@@ -8,6 +8,18 @@
 
 #ifdef CONFIG_FREEZER
 /*
+ * Check if the task is freezeable ?
+ */
+static inline int freezeable(struct task_struct * p)
+{
+	if ((p == current) ||
+	    (p->flags & PF_NOFREEZE) ||
+	    (p->exit_state != 0))
+		return 0;
+	return 1;
+}
+
+/*
  * Check if a process has been frozen
  */
 static inline int frozen(struct task_struct *p)
Index: linux-2.6.36-rc7/kernel/power/process.c
===================================================================
--- linux-2.6.36-rc7.orig/kernel/power/process.c
+++ linux-2.6.36-rc7/kernel/power/process.c
@@ -22,15 +22,6 @@
  */
 #define TIMEOUT	(20 * HZ)
 
-static inline int freezeable(struct task_struct * p)
-{
-	if ((p == current) ||
-	    (p->flags & PF_NOFREEZE) ||
-	    (p->exit_state != 0))
-		return 0;
-	return 1;
-}
-
 static int try_to_freeze_tasks(bool sig_only)
 {
 	struct task_struct *g, *p;
--
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