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Revert "nohz: Make tick_nohz_irq_exit() irq safe"

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This reverts commit 351429b2e62b6545bb10c756686393f29ba268a1. The
extra local_irq_save() is not longer needed as the call site now
always calls with interrupts disabled.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Linus Torvalds <torvalds@linuxfoundation.org>
This commit is contained in:
Thomas Gleixner 2013-02-21 18:21:30 +01:00
parent facd8b80c6
commit af7bdbafe3
1 changed files with 1 additions and 6 deletions
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7
kernel/time/tick-sched.c
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@ -565,19 +565,14 @@ void tick_nohz_idle_enter(void)
*/ */
void tick_nohz_irq_exit(void) void tick_nohz_irq_exit(void)
{ {
unsigned long flags;
struct tick_sched *ts = &__get_cpu_var(tick_cpu_sched); struct tick_sched *ts = &__get_cpu_var(tick_cpu_sched);
if (!ts->inidle) if (!ts->inidle)
return; return;
local_irq_save(flags); /* Cancel the timer because CPU already waken up from the C-states*/
/* Cancel the timer because CPU already waken up from the C-states */
menu_hrtimer_cancel(); menu_hrtimer_cancel();
__tick_nohz_idle_enter(ts); __tick_nohz_idle_enter(ts);
local_irq_restore(flags);
} }
/** /**