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authorLinus Torvalds <torvalds@linux-foundation.org>2009-06-20 10:51:44 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-20 10:51:44 -0700
commit38df92b8cee936334f686c06df0e5fbb92e252df (patch)
treeffdfd4e5e746300f38a1267b207b293710b3c9a9 /kernel
parentc4c5ab3089c8a794eb0bdaa9794d0f055dd82412 (diff)
parentf2e21c9610991e95621a81407cdbab881226419b (diff)
downloadlinux-2.6.34-ux500-38df92b8cee936334f686c06df0e5fbb92e252df.tar.gz
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
Diffstat (limited to 'kernel')
-rw-r--r--kernel/time/tick-sched.c12
1 files changed, 9 insertions, 3 deletions
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index 2aff39c6f10..e0f59a21c06 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())