From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Date: Tue, 14 May 2013 17:57:59 +0000 Subject: Re: [PATCH V5 5/5] fbcon: queue work on power efficient wq Message-Id: <20130514175759.GK6795@mtj.dyndns.org> List-Id: References: <89924f001e3ddd66ab41a16500569a976ea846fd.1366803121.git.viresh.kumar@linaro.org> In-Reply-To: <89924f001e3ddd66ab41a16500569a976ea846fd.1366803121.git.viresh.kumar@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Viresh Kumar Cc: davem@davemloft.net, airlied@redhat.com, axboe@kernel.dk, tglx@linutronix.de, peterz@infradead.org, mingo@redhat.com, rostedt@goodmis.org, linux-rt-users@vger.kernel.org, linux-kernel@vger.kernel.org, robin.randhawa@arm.com, Steve.Bannister@arm.com, Liviu.Dudau@arm.com, charles.garcia-tobin@arm.com, arvind.chauhan@arm.com, linaro-kernel@lists.linaro.org, patches@linaro.org, linux-fbdev@vger.kernel.org On Wed, Apr 24, 2013 at 05:12:57PM +0530, Viresh Kumar wrote: > 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 > Cc: linux-fbdev@vger.kernel.org > Signed-off-by: Viresh Kumar Dave, applied this to wq/for-3.11. Please holler if you want this to be routed differently. Thanks! -- tejun