The patch titled
timers: use this_cpu_read()
has been added to the -mm tree. Its filename is
timers-use-this_cpu_read.patch
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------------------------------------------------------
Subject: timers: use this_cpu_read()
From: Christoph Lameter <cl@xxxxxxxxx>
Eric asked for this.
(akpm: generates better code, saves 20 bytes of text on x86_64).
Signed-off-by: Christoph Lameter <cl@xxxxxxxxx>
Cc: Pekka Enberg <penberg@xxxxxxxxxxxxxx>
Cc: Eric Dumazet <eric.dumazet@xxxxxxxxx>
Cc: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/timer.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff -puN kernel/timer.c~timers-use-this_cpu_read kernel/timer.c
--- a/kernel/timer.c~timers-use-this_cpu_read
+++ a/kernel/timer.c
@@ -1227,7 +1227,7 @@ 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);
@@ -1270,7 +1270,7 @@ 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();
_
Patches currently in -mm which might be from cl@xxxxxxxxx are
linux-next.patch
irq-use-per_cpu-kstat_irqs.patch
timers-use-this_cpu_read.patch
mm-page-allocator-adjust-the-per-cpu-counter-threshold-when-memory-is-low.patch
mm-vmstat-use-a-single-setter-function-and-callback-for-adjusting-percpu-thresholds.patch
mm-vmstat-use-a-single-setter-function-and-callback-for-adjusting-percpu-thresholds-update.patch
mm-vmstat-use-a-single-setter-function-and-callback-for-adjusting-percpu-thresholds-fix-set_pgdat_percpu_threshold-dont-use-for_each_online_cpu.patch
mm-remove-unused-get_vm_area_node.patch
mm-remove-gfp-mask-from-pcpu_get_vm_areas.patch
mm-unify-module_alloc-code-for-vmalloc.patch
percpucounter-optimize-__percpu_counter_add-a-bit-through-the-use-of-this_cpu-operations.patch
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