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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2010-07-09 15:12:27 +0200
committerIngo Molnar <mingo@elte.hu>2010-07-17 12:05:44 +0200
commit396e894d289d69bacf5acd983c97cd6e21a14c08 (patch)
treeec3e3ba19e332a799e1229f62663625d9c7583dd /kernel/time
parentf469461df6ff822f71b8737bda86eea20f16ff93 (diff)
downloadop-kernel-dev-396e894d289d69bacf5acd983c97cd6e21a14c08.zip
op-kernel-dev-396e894d289d69bacf5acd983c97cd6e21a14c08.tar.gz
sched: Revert nohz_ratelimit() for now
Norbert reported that nohz_ratelimit() causes his laptop to burn about 4W (40%) extra. For now back out the change and see if we can adjust the power management code to make better decisions. Reported-by: Norbert Preining <preining@logic.at> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Mike Galbraith <efault@gmx.de> Cc: Arjan van de Ven <arjan@infradead.org> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/time')
-rw-r--r--kernel/time/tick-sched.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index 813993b..f898af6 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -325,7 +325,7 @@ void tick_nohz_stop_sched_tick(int inidle)
} while (read_seqretry(&xtime_lock, seq));
if (rcu_needs_cpu(cpu) || printk_needs_cpu(cpu) ||
- arch_needs_cpu(cpu) || nohz_ratelimit(cpu)) {
+ arch_needs_cpu(cpu)) {
next_jiffies = last_jiffies + 1;
delta_jiffies = 1;
} else {
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