linux-kernel - [tip:timers/core] timers: Use this_cpu

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Date:	Sun, 12 Dec 2010 17:41:43 GMT
From:	tip-bot for Christoph Lameter <cl@...ux.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	mathieu.desnoyers@...icios.com, eric.dumazet@...il.com,
	penberg@...helsinki.fi, cl@...ux.com, tj@...nel.org,
	tglx@...utronix.de
Subject: [tip:timers/core] timers: Use this_cpu_read

Commit-ID:  7496351ad87e61e96b49dd7b43c6534e3401f566
Gitweb:     http://git.kernel.org/tip/7496351ad87e61e96b49dd7b43c6534e3401f566
Author:     Christoph Lameter <cl@...ux.com>
AuthorDate: Tue, 30 Nov 2010 14:05:53 -0600
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Sun, 12 Dec 2010 18:38:09 +0100

timers: Use this_cpu_read

Eric asked for this.

[tglx: Because it generates faster code according to Erics ]

Signed-off-by: Christoph Lameter <cl@...ux.com>
Cc: Pekka Enberg <penberg@...helsinki.fi>
Cc: Eric Dumazet <eric.dumazet@...il.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
Cc: Tejun Heo <tj@...nel.org>
Cc: linux-mm@...ck.org
LKML-Reference: <alpine.DEB.2.00.1011301404490.4039@...ter.home>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>

---
 kernel/timer.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/timer.c b/kernel/timer.c
index 483e54b..beb97fd 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -1227,7 +1227,7 @@ static unsigned long cmp_next_hrtimer_event(unsigned long now,
  */
 unsigned long get_next_timer_interrupt(unsigned long now)
 {
-	struct tvec_base *base = __get_cpu_var(tvec_bases);
+	struct tvec_base *base = __this_cpu_read(tvec_bases);
 	unsigned long expires;
 
 	spin_lock(&base->lock);
@@ -1267,7 +1267,7 @@ void update_process_times(int user_tick)
  */
 static void run_timer_softirq(struct softirq_action *h)
 {
-	struct tvec_base *base = __get_cpu_var(tvec_bases);
+	struct tvec_base *base = __this_cpu_read(tvec_bases);
 
 	hrtimer_run_pending();
 
--
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