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authorFrederic Weisbecker <fweisbec@gmail.com>2013-08-07 22:28:01 +0200
committerFrederic Weisbecker <fweisbec@gmail.com>2013-12-02 20:39:30 +0100
commite8fcaa5c54e3b0371230e5d43a6f650c667da9c5 (patch)
tree966d06c71bc79809ca34675b023602aefc8e578d /kernel/softirq.c
parentdc1ccc48159d63eca5089e507c82c7d22ef60839 (diff)
downloadlinux-e8fcaa5c54e3b0371230e5d43a6f650c667da9c5.tar.bz2
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/softirq.c')
-rw-r--r--kernel/softirq.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/kernel/softirq.c b/kernel/softirq.c
index 11025ccc06dd..11348de09400 100644
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -311,8 +311,6 @@ asmlinkage void do_softirq(void)
*/
void irq_enter(void)
{
- int cpu = smp_processor_id();
-
rcu_irq_enter();
if (is_idle_task(current) && !in_interrupt()) {
/*
@@ -320,7 +318,7 @@ void irq_enter(void)
* here, as softirq will be serviced on return from interrupt.
*/
local_bh_disable();
- tick_check_idle(cpu);
+ tick_check_idle();
_local_bh_enable();
}