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nohz: Convert a few places to use local per cpu accesses

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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>
This commit is contained in:
Frederic Weisbecker 2013-08-07 22:28:01 +02:00
parent dc1ccc4815
commit e8fcaa5c54
5 changed files with 25 additions and 34 deletions
Download patch file Download diff file Expand all files Collapse all files

4
kernel/softirq.c
View file

@ -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();
}