linux-kernel - [extra] timers: Use this_cpu

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Date:	Tue, 30 Nov 2010 14:05:53 -0600 (CST)
From:	Christoph Lameter <cl@...ux.com>
To:	akpm@...ux-foundation.org
cc:	Pekka Enberg <penberg@...helsinki.fi>,
	linux-kernel@...r.kernel.org,
	Eric Dumazet <eric.dumazet@...il.com>,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	Tejun Heo <tj@...nel.org>, linux-mm@...ck.org,
	Thomas Gleixner <tglx@...utronix.de>
Subject: [extra] timers: Use this_cpu_read

Subject: timers: Use this_cpu_read

Eric asked for this.

Signed-off-by: Christoph Lameter <cl@...ux.com>

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

Index: linux-2.6/kernel/timer.c
===================================================================
--- linux-2.6.orig/kernel/timer.c	2010-11-30 14:01:41.000000000 -0600
+++ linux-2.6/kernel/timer.c	2010-11-30 14:02:05.000000000 -0600
@@ -1249,7 +1249,7 @@ static unsigned long cmp_next_hrtimer_ev
  */
 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);
@@ -1292,7 +1292,7 @@ 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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