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From: Tejun Heo <tj@kernel.org>
To: rjw@sisk.pl, paul@paulmenage.org, linux-kernel@vger.kernel.org,
	linux-pm@vger.kernel.org
Cc: arnd@arndb.de, oleg@redhat.com, matthltc@us.ibm.com,
	Tejun Heo <tj@kernel.org>
Subject: [PATCH 07/17] freezer: don't distinguish nosig tasks on thaw
Date: Mon, 31 Oct 2011 12:05:18 -0700	[thread overview]
Message-ID: <1320087928-32307-8-git-send-email-tj@kernel.org> (raw)
In-Reply-To: <1320087928-32307-1-git-send-email-tj@kernel.org>

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@kernel.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 23822dc..9db048f 100644
--- a/kernel/power/process.c
+++ b/kernel/power/process.c
@@ -170,34 +170,28 @@ int freeze_kernel_threads(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");
 }
-- 
1.7.3.1


  parent reply	other threads:[~2011-10-31 19:05 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-10-31 19:05 [PATCHSET pm] freezer: fix various bugs and simplify implementation, take#2 Tejun Heo
2011-10-31 19:05 ` [PATCH 01/17] freezer: fix current->state restoration race in refrigerator() Tejun Heo
2011-10-31 19:05 ` [PATCH 02/17] freezer: don't unnecessarily set PF_NOFREEZE explicitly Tejun Heo
2011-10-31 19:05 ` [PATCH 03/17] freezer: unexport refrigerator() and update try_to_freeze() slightly Tejun Heo
2011-10-31 19:05 ` [PATCH 04/17] freezer: implement and use kthread_freezable_should_stop() Tejun Heo
2011-10-31 19:05 ` [PATCH 05/17] freezer: rename thaw_process() to __thaw_task() and simplify the implementation Tejun Heo
2011-11-06 12:04   ` Srivatsa S. Bhat
2011-11-06 16:51     ` Tejun Heo
2011-11-06 17:10       ` Srivatsa S. Bhat
2011-10-31 19:05 ` [PATCH 06/17] freezer: remove racy clear_freeze_flag() and set PF_NOFREEZE on dead tasks Tejun Heo
2011-10-31 19:05 ` Tejun Heo [this message]
2011-10-31 19:05 ` [PATCH 08/17] freezer: use dedicated lock instead of task_lock() + memory barrier Tejun Heo
2011-10-31 19:05 ` [PATCH 09/17] freezer: make freezing indicate freeze condition in effect Tejun Heo
2011-10-31 19:05 ` [PATCH 10/17] freezer: test freezable conditions while holding freezer_lock Tejun Heo
2011-10-31 19:05 ` [PATCH 11/17] freezer: kill PF_FREEZING Tejun Heo
2011-10-31 19:05 ` [PATCH 12/17] freezer: clean up freeze_processes() failure path Tejun Heo
2011-11-03 19:09   ` Srivatsa S. Bhat
2011-11-03 22:25   ` [PATCH UPDATED " Tejun Heo
2011-10-31 19:05 ` [PATCH 13/17] cgroup_freezer: prepare for removal of TIF_FREEZE Tejun Heo
2011-10-31 22:33   ` [PATCH UPDATED " Tejun Heo
2011-10-31 19:05 ` [PATCH 14/17] freezer: make freezing() test freeze conditions in effect instead " Tejun Heo
2011-10-31 22:34   ` [PATCH UPDATED " Tejun Heo
2011-10-31 19:05 ` [PATCH 15/17] freezer: remove now unused TIF_FREEZE Tejun Heo
2011-10-31 19:05 ` [PATCH 16/17] freezer: remove should_send_signal() and update frozen() Tejun Heo
2011-10-31 19:05 ` [PATCH 17/17] freezer: fix set_freezable[_with_signal]() race Tejun Heo
2011-10-31 22:34 ` [PATCH 18/17] freezer: restructure __refrigerator() Tejun Heo
2011-10-31 22:35 ` [PATCH 19/17] freezer: use lock_task_sighand() in fake_signal_wake_up() Tejun Heo
2011-10-31 22:35 ` [PATCH UPDATED 20/17] freezer: remove unused @sig_only from freeze_task() Tejun Heo
2011-10-31 22:40 ` [PATCHSET UPDATED pm] freezer: fix various bugs and simplify implementation, take#2 Tejun Heo

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