Commit 02290683 authored by Chris Wright's avatar Chris Wright Committed by Thomas Gleixner

x86_64: prepare idle loop for dynamic ticks

Add tick_nohz_{stop,restart}_sched_tick to idle loop in prepartion for turning
on dynticks.  These are just noops until NO_HZ is enabled.
Signed-off-by: default avatarChris Wright <chrisw@sous-sol.org>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarArjan van de Ven <arjan@linux.intel.com>
parent c4d58cbd
......@@ -38,6 +38,7 @@
#include <linux/notifier.h>
#include <linux/kprobes.h>
#include <linux/kdebug.h>
#include <linux/tick.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
......@@ -208,6 +209,8 @@ void cpu_idle (void)
if (__get_cpu_var(cpu_idle_state))
__get_cpu_var(cpu_idle_state) = 0;
tick_nohz_stop_sched_tick();
rmb();
idle = pm_idle;
if (!idle)
......@@ -228,6 +231,7 @@ void cpu_idle (void)
__exit_idle();
}
tick_nohz_restart_sched_tick();
preempt_enable_no_resched();
schedule();
preempt_disable();
......
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