Messages in this thread Patch in this message | | | From | Viresh Kumar <> | Subject | [PATCH V5 5/5] fbcon: queue work on power efficient wq | Date | Wed, 24 Apr 2013 17:12:57 +0530 |
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fbcon uses workqueues and it has no real dependency of scheduling these on the cpu which scheduled them.
On a idle system, it is observed that and idle cpu wakes up many times just to service this work. It would be better if we can schedule it on a cpu which the scheduler believes to be the most appropriate one.
This patch replaces system_wq with system_power_efficient_wq.
Cc: Dave Airlie <airlied@redhat.com> Cc: linux-fbdev@vger.kernel.org Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> --- drivers/video/console/fbcon.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/video/console/fbcon.c b/drivers/video/console/fbcon.c index 3cd6759..0cae83d 100644 --- a/drivers/video/console/fbcon.c +++ b/drivers/video/console/fbcon.c @@ -404,7 +404,7 @@ static void cursor_timer_handler(unsigned long dev_addr) struct fb_info *info = (struct fb_info *) dev_addr; struct fbcon_ops *ops = info->fbcon_par; - schedule_work(&info->queue); + queue_work(system_power_efficient_wq, &info->queue); mod_timer(&ops->cursor_timer, jiffies + HZ/5); } -- 1.7.12.rc2.18.g61b472e
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