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| author |   Frederic Weisbecker <fweisbec@gmail.com> | 2013-08-07 22:28:01 +0200 |
|---|---|---|
| committer | Frederic Weisbecker <fweisbec@gmail.com> | 2013-12-02 20:39:30 +0100 |
| commit | e8fcaa5c54e3b0371230e5d43a6f650c667da9c5 (patch) | |
| tree | 966d06c71bc79809ca34675b023602aefc8e578d /kernel/time/tick-broadcast.c | |
| parent | Linux 3.13-rc2 (diff) | |
| download | linux-dev-e8fcaa5c54e3b0371230e5d43a6f650c667da9c5.tar.xz linux-dev-e8fcaa5c54e3b0371230e5d43a6f650c667da9c5.zip | |
nohz: Convert a few places to use local per cpu accesses
A few functions use remote per CPU access APIs when they
deal with local values.
Just do the right conversion to improve performance, code
readability and debug checks.
While at it, lets extend some of these function names with *_this_cpu()
suffix in order to display their purpose more clearly.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/time/tick-broadcast.c')
| -rw-r--r-- | kernel/time/tick-broadcast.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/kernel/time/tick-broadcast.c b/kernel/time/tick-broadcast.c index 9532690daaa9..43780ab5e279 100644 --- a/kernel/time/tick-broadcast.c +++ b/kernel/time/tick-broadcast.c @@ -538,10 +538,10 @@ int tick_resume_broadcast_oneshot(struct clock_event_device *bc) * Called from irq_enter() when idle was interrupted to reenable the * per cpu device. */ -void tick_check_oneshot_broadcast(int cpu) +void tick_check_oneshot_broadcast_this_cpu(void) { - if (cpumask_test_cpu(cpu, tick_broadcast_oneshot_mask)) { - struct tick_device *td = &per_cpu(tick_cpu_device, cpu); + if (cpumask_test_cpu(smp_processor_id(), tick_broadcast_oneshot_mask)) { + struct tick_device *td = &__get_cpu_var(tick_cpu_device); /* * We might be in the middle of switching over from |