| From 3e9dc2afddfc1d76719f84ab5ea6b37e0fff5c46 Mon Sep 17 00:00:00 2001 |
| From: Viresh Kumar <viresh.kumar@linaro.org> |
| Date: Wed, 24 Apr 2013 17:12:57 +0530 |
| Subject: fbcon: queue work on power efficient wq |
| |
| 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> |
| Signed-off-by: Tejun Heo <tj@kernel.org> |
| (cherry picked from commit a85f1a41f020bc2c97611060bcfae6f48a1db28d) |
| Signed-off-by: Mark Brown <broonie@linaro.org> |
| --- |
| drivers/video/console/fbcon.c | 2 +- |
| 1 file changed, 1 insertion(+), 1 deletion(-) |
| |
| --- a/drivers/video/console/fbcon.c |
| +++ b/drivers/video/console/fbcon.c |
| @@ -404,7 +404,7 @@ static void cursor_timer_handler(unsigne |
| 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); |
| } |
| |
