linux-kernel - [tip:timers/core] hrtimer: Cache line align the hrtimer cpu base

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Message-ID: <tip-6d9a1411393d51f17bee3fe163430b21b2cb2de9@git.kernel.org>
Date:	Wed, 22 Apr 2015 12:07:37 -0700
From:	tip-bot for Thomas Gleixner <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	tglx@...utronix.de, preeti@...ux.vnet.ibm.com, mtosatti@...hat.com,
	mingo@...nel.org, peterz@...radead.org, hpa@...or.com,
	viresh.kumar@...aro.org, linux-kernel@...r.kernel.org,
	fweisbec@...il.com
Subject: [tip:timers/core] hrtimer: Cache line align the hrtimer cpu base

Commit-ID:  6d9a1411393d51f17bee3fe163430b21b2cb2de9
Gitweb:     http://git.kernel.org/tip/6d9a1411393d51f17bee3fe163430b21b2cb2de9
Author:     Thomas Gleixner <tglx@...utronix.de>
AuthorDate: Tue, 14 Apr 2015 21:08:42 +0000
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Wed, 22 Apr 2015 17:06:49 +0200

hrtimer: Cache line align the hrtimer cpu base

We really want that data structure to start at a cache line boundary.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Acked-by: Peter Zijlstra <peterz@...radead.org>
Cc: Preeti U Murthy <preeti@...ux.vnet.ibm.com>
Cc: Viresh Kumar <viresh.kumar@...aro.org>
Cc: Marcelo Tosatti <mtosatti@...hat.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Link: http://lkml.kernel.org/r/20150414203501.417597627@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
---
 include/linux/hrtimer.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h
index 17a59dd..0853f52 100644
--- a/include/linux/hrtimer.h
+++ b/include/linux/hrtimer.h
@@ -191,7 +191,7 @@ struct hrtimer_cpu_base {
 	unsigned int			max_hang_time;
 #endif
 	struct hrtimer_clock_base	clock_base[HRTIMER_MAX_CLOCK_BASES];
-};
+} ____cacheline_aligned;
 
 static inline void hrtimer_set_expires(struct hrtimer *timer, ktime_t time)
 {
--
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