linux-kernel - [PATCH 07/16] freezer: don't distinguish nosig tasks on thaw

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Message-Id: <1313763382-12341-8-git-send-email-tj@kernel.org>
Date:	Fri, 19 Aug 2011 16:16:13 +0200
From:	Tejun Heo <tj@...nel.org>
To:	rjw@...k.pl, menage@...gle.com, linux-kernel@...r.kernel.org
Cc:	arnd@...db.de, oleg@...hat.com, Tejun Heo <tj@...nel.org>
Subject: [PATCH 07/16] freezer: don't distinguish nosig tasks on thaw

There's no point in thawing nosig tasks before others.  There's no
ordering requirement between the two groups on thaw, which the staged
thawing can't guarantee anyway.  Simplify thaw_processes() by removing
the distinction and collapsing thaw_tasks() into thaw_processes().
This will help further updates to freezer.

Signed-off-by: Tejun Heo <tj@...nel.org>
---
 kernel/power/process.c |   20 +++++++-------------
 1 files changed, 7 insertions(+), 13 deletions(-)

diff --git a/kernel/power/process.c b/kernel/power/process.c
index ddfaba4..3eee548 100644
--- a/kernel/power/process.c
+++ b/kernel/power/process.c
@@ -160,34 +160,28 @@ int freeze_processes(void)
 	return error;
 }
 
-static void thaw_tasks(bool nosig_only)
+void thaw_processes(void)
 {
 	struct task_struct *g, *p;
 
+	oom_killer_enable();
+
+	printk("Restarting tasks ... ");
+
+	thaw_workqueues();
+
 	read_lock(&tasklist_lock);
 	do_each_thread(g, p) {
 		if (!freezable(p))
 			continue;
 
-		if (nosig_only && should_send_signal(p))
-			continue;
-
 		if (cgroup_freezing_or_frozen(p))
 			continue;
 
 		__thaw_task(p);
 	} while_each_thread(g, p);
 	read_unlock(&tasklist_lock);
-}
-
-void thaw_processes(void)
-{
-	oom_killer_enable();
 
-	printk("Restarting tasks ... ");
-	thaw_workqueues();
-	thaw_tasks(true);
-	thaw_tasks(false);
 	schedule();
 	printk("done.\n");
 }
-- 
1.7.6

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