Merge branch 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  NOHZ: Properly feed cpufreq ondemand governor

1 files changed, 9 insertions, 3 deletions

diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index 2aff39c6f10c..e0f59a21c061 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -222,6 +222,15 @@ void tick_nohz_stop_sched_tick(int inidle)
 
         cpu = smp_processor_id();
         ts = &per_cpu(tick_cpu_sched, cpu);
+
+        /*
+         * Call to tick_nohz_start_idle stops the last_update_time from being
+         * updated. Thus, it must not be called in the event we are called from
+         * irq_exit() with the prior state different than idle.
+         */
+        if (!inidle && !ts->inidle)
+                goto end;
+
         now = tick_nohz_start_idle(ts);
 
         /*
@@ -239,9 +248,6 @@ void tick_nohz_stop_sched_tick(int inidle)
         if (unlikely(ts->nohz_mode == NOHZ_MODE_INACTIVE))
                 goto end;
 
-        if (!inidle && !ts->inidle)
-                goto end;
-
         ts->inidle = 1;
 
         if (need_resched())