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nohz: Remove ts->Einidle checks before restarting the tick 

ts->inidle is set by tick_nohz_idle_enter() and unset by
tick_nohz_idle_exit(). However these two calls are assumed
to be always paired. This means that by the time we call
tick_nohz_idle_exit(), ts->inidle is supposed to be always
set to 1.

Remove the checks for ts->inidle in tick_nohz_idle_exit().
This simplifies a bit the code and improves its debuggability
(ie: ensure the call is paired with a tick_nohz_idle_enter()
call).

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Reviewed-by: Yong Zhang <yong.zhang0@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Ingo Molnar <mingo@elte.hu>
Link: http://lkml.kernel.org/r/1327427984-23282-2-git-send-email-fweisbec@gmail.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Frederic Weisbecker 2012-01-24 18:59:43 +01:00 committed by Thomas Gleixner
parent 430ee88195
commit 15f827be93
1 changed files with 6 additions and 5 deletions
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11
kernel/time/tick-sched.c
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@ -558,20 +558,21 @@ void tick_nohz_idle_exit(void)
local_irq_disable();
if (ts->idle_active || (ts->inidle && ts->tick_stopped))
WARN_ON_ONCE(!ts->inidle);
ts->inidle = 0;
if (ts->idle_active || ts->tick_stopped)
now = ktime_get();
if (ts->idle_active)
tick_nohz_stop_idle(cpu, now);
if (!ts->inidle || !ts->tick_stopped) {
ts->inidle = 0;
if (!ts->tick_stopped) {
local_irq_enable();
return;
}
ts->inidle = 0;
/* Update jiffies first */
select_nohz_load_balancer(0);
tick_do_update_jiffies64(now);