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From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: John Stultz <john.stultz@linaro.org>,
	Eric Dumazet <eric.dumazet@gmail.com>,
	Richard Cochran <richardcochran@gmail.com>
Subject: [patch 4/7] timekeeper: Reorder so the hot data is together
Date: Sun, 13 Nov 2011 23:19:48 -0000	[thread overview]
Message-ID: <20111113231341.672817969@linutronix.de> (raw)
In-Reply-To: <20111113230921.728083714@linutronix.de>

[-- Attachment #1: timekeeper-reorder.patch --]
[-- Type: text/plain, Size: 922 bytes --]

Keep all the interesting data in a single cache line.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
 kernel/time/timekeeping.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Index: linux-2.6-tip/kernel/time/timekeeping.c
===================================================================
--- linux-2.6-tip.orig/kernel/time/timekeeping.c
+++ linux-2.6-tip/kernel/time/timekeeping.c
@@ -27,6 +27,8 @@ struct timekeeper {
 	struct clocksource *clock;
 	/* The shift value of the current clocksource. */
 	int	shift;
+	/* NTP adjusted clock multiplier */
+	u32	mult;
 
 	/* Number of clock cycles in one NTP interval. */
 	cycle_t cycle_interval;
@@ -45,8 +47,6 @@ struct timekeeper {
 	/* Shift conversion between clock shifted nano seconds and
 	 * ntp shifted nano seconds. */
 	int	ntp_error_shift;
-	/* NTP adjusted clock multiplier */
-	u32	mult;
 };
 
 static struct timekeeper timekeeper;



  parent reply	other threads:[~2011-11-13 23:21 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-11-13 23:19 [patch 0/7] timekeeping: Decouple xtime_lock from xtime seqcount Thomas Gleixner
2011-11-13 23:19 ` [patch 1/7] timekeeping: Split xtime lock into lock and seqcount Thomas Gleixner
2011-11-13 23:19 ` [patch 2/7] ntp: Shorten xtime seqcount sections Thomas Gleixner
2011-11-13 23:19 ` [patch 3/7] timekeeping: Make seqcount sections smaller Thomas Gleixner
2011-11-13 23:19 ` Thomas Gleixner [this message]
2011-11-13 23:19 ` [patch 5/7] timekeeping: Move common updates to a function Thomas Gleixner
2011-11-13 23:19 ` [patch 6/7] timekeeping: Add extra timekeeper/xtime structs for calculation Thomas Gleixner
2011-11-13 23:19 ` [patch 7/7] timekeeping: Reduce seqcount section to update timekeeper/xtime Thomas Gleixner
2011-11-14  6:28 ` [patch 0/7] timekeeping: Decouple xtime_lock from xtime seqcount Eric Dumazet

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