linux-kernel - [PATCH] freezer: only show the state of tasks refusing to freeze

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Message-Id: <1268213322-5094-1-git-send-email-dfeng@redhat.com>
Date:	Wed, 10 Mar 2010 17:28:42 +0800
From:	Xiaotian Feng <dfeng@...hat.com>
To:	linux-pm@...ts.linux-foundation.org
Cc:	linux-kernel@...r.kernel.org, Xiaotian Feng <dfeng@...hat.com>,
	Pavel Machek <pavel@....cz>, "Rafael J. Wysocki" <rjw@...k.pl>,
	Len Brown <len.brown@...el.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Alexey Dobriyan <adobriyan@...il.com>,
	David Rientjes <rientjes@...gle.com>
Subject: [PATCH] freezer: only show the state of tasks refusing to freeze

show_state will dump all tasks state, so if freezer failed to freeze
any task, kernel will dump all tasks state and flood the dmesg log.
This patch makes freezer only show state of tasks refusing to freeze.

Signed-off-by: Xiaotian Feng <dfeng@...hat.com>
Cc: Pavel Machek <pavel@....cz>
Cc: Rafael J. Wysocki <rjw@...k.pl>
Cc: Len Brown <len.brown@...el.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Alexey Dobriyan <adobriyan@...il.com>
Cc: David Rientjes <rientjes@...gle.com>
---
 kernel/power/process.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/kernel/power/process.c b/kernel/power/process.c
index 5ade1bd..a0480cd 100644
--- a/kernel/power/process.c
+++ b/kernel/power/process.c
@@ -88,12 +88,11 @@ static int try_to_freeze_tasks(bool sig_only)
 		printk(KERN_ERR "Freezing of tasks failed after %d.%02d seconds "
 				"(%d tasks refusing to freeze):\n",
 				elapsed_csecs / 100, elapsed_csecs % 100, todo);
-		show_state();
 		read_lock(&tasklist_lock);
 		do_each_thread(g, p) {
 			task_lock(p);
 			if (freezing(p) && !freezer_should_skip(p))
-				printk(KERN_ERR " %s\n", p->comm);
+				sched_show_task(p);
 			cancel_freezing(p);
 			task_unlock(p);
 		} while_each_thread(g, p);
-- 
1.6.6.1

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