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List: linaro-kernel
Subject: [PATCH V4 4/4] fbcon: queue work on unbound wq
From: viresh.kumar () linaro ! org (Viresh Kumar)
Date: 2013-03-31 14:43:47
Message-ID: 2a30b6c081a7899fbce88bddf20b94c348eb4654.1364740180.git.viresh.kumar () linaro ! org
[Download RAW message or body]
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_unbound_wq.
Cc: Dave Airlie <airlied at redhat.com>
Cc: linux-fbdev at vger.kernel.org
Signed-off-by: Viresh Kumar <viresh.kumar at 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..6c1f7c3 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_unbound_wq, &info->queue);
mod_timer(&ops->cursor_timer, jiffies + HZ/5);
}
--
1.7.12.rc2.18.g61b472e
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