linux-kernel - [PATCH] cpuidle menu: remove 8 bytes of padding on 64 bit builds

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Message-ID: <1264417156.2039.9.camel@localhost>
Date:	Mon, 25 Jan 2010 10:59:16 +0000
From:	Richard Kennedy <richard@....demon.co.uk>
To:	Arjan van de Ven <arjan@...ux.intel.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc:	lkml <linux-kernel@...r.kernel.org>
Subject: [PATCH]  cpuidle menu: remove 8 bytes of padding on 64 bit builds

reorder struct menu_device to remove 8 bytes of padding on 64 bit
builds. Size drops from 136 to 128 bytes, so possibly needing one fewer
cache lines.


Signed-off-by: Richard Kennedy <richard@....demon.co.uk>

-----
patch against 2.6.33-rc5
compile tested only

regards
Richard


diff --git a/drivers/cpuidle/governors/menu.c b/drivers/cpuidle/governors/menu.c
index 73655ae..1aea715 100644
--- a/drivers/cpuidle/governors/menu.c
+++ b/drivers/cpuidle/governors/menu.c
@@ -100,8 +100,8 @@ struct menu_device {
 	int             needs_update;
 
 	unsigned int	expected_us;
-	u64		predicted_us;
 	unsigned int	measured_us;
+	u64		predicted_us;
 	unsigned int	exit_us;
 	unsigned int	bucket;
 	u64		correction_factor[BUCKETS];


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