linux-kernel - [PATCH] freezer: cleanup printk call sequences

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Date:	Thu, 28 May 2009 18:02:21 +0200
From:	Michael Roth <mroth@...sie.de>
To:	linux-kernel@...r.kernel.org
Cc:	torvalds@...ux-foundation.org, Michael Roth <mroth@...sie.de>
Subject: [PATCH] freezer: cleanup printk call sequences

Correct and ease printk() interaction among freeze_processes()
and try_to_freeze_tasks().

Move printk("done") in thaw_processes() before schedule() to
prevent implicit interferences from it.

Signed-off-by: Michael Roth <mroth@...sie.de>
---
 kernel/power/process.c |   10 +++-------
 1 files changed, 3 insertions(+), 7 deletions(-)

diff --git a/kernel/power/process.c b/kernel/power/process.c
index ca63401..f6bd3de 100644
--- a/kernel/power/process.c
+++ b/kernel/power/process.c
@@ -92,7 +92,7 @@ static int try_to_freeze_tasks(bool sig_only)
 		} while_each_thread(g, p);
 		read_unlock(&tasklist_lock);
 	} else {
-		printk("(elapsed %d.%02d seconds) ", elapsed_csecs / 100,
+		printk("(elapsed %d.%02d seconds) done.\n", elapsed_csecs / 100,
 			elapsed_csecs % 100);
 	}
 
@@ -110,16 +110,12 @@ int freeze_processes(void)
 	error = try_to_freeze_tasks(true);
 	if (error)
 		goto Exit;
-	printk("done.\n");
 
 	printk("Freezing remaining freezable tasks ... ");
 	error = try_to_freeze_tasks(false);
-	if (error)
-		goto Exit;
-	printk("done.");
+
  Exit:
 	BUG_ON(in_atomic());
-	printk("\n");
 	return error;
 }
 
@@ -148,7 +144,7 @@ void thaw_processes(void)
 	printk("Restarting tasks ... ");
 	thaw_tasks(true);
 	thaw_tasks(false);
-	schedule();
 	printk("done.\n");
+	schedule();
 }
 
-- 
1.6.0.6

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