linux-kernel - [PATCH] hrtimer: reorder struct hrtimer to save 8 bytes on 64 bit builds

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Date:	Fri, 01 Aug 2008 13:11:49 +0100
From:	Richard Kennedy <richard@....demon.co.uk>
To:	tglx@...utronix.de
Cc:	lkml <linux-kernel@...r.kernel.org>
Subject: [PATCH] hrtimer: reorder struct hrtimer to save 8 bytes on 64 bit
	builds

reorder struct hrtimer to save 8 bytes on 64 bit builds when
CONFIG_TIMER_STATS selected.
(also removes 8 bytes from signal_struct)

Signed-off-by: Richard Kennedy <richard@....demon.co.uk>
---
patch against 2.6.27-rc1.
compiled & tested on AMD64 desktop machine.

richard


 include/linux/hrtimer.h |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h
index 6d93dce..7d1dcf9 100644
--- a/include/linux/hrtimer.h
+++ b/include/linux/hrtimer.h
@@ -115,12 +115,12 @@ struct hrtimer {
 	enum hrtimer_restart		(*function)(struct hrtimer *);
 	struct hrtimer_clock_base	*base;
 	unsigned long			state;
-	enum hrtimer_cb_mode		cb_mode;
 	struct list_head		cb_entry;
+	enum hrtimer_cb_mode		cb_mode;
 #ifdef CONFIG_TIMER_STATS
+	int				start_pid;
 	void				*start_site;
 	char				start_comm[16];
-	int				start_pid;
 #endif
 };
 
-- 
1.5.5.1



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