tree 4a9963696a82937133acaa8ea682c88ff3d798af
parent bbb47bdeae756f04b896b55b51f230f3eb21f207
author Viresh Kumar <viresh.kumar@linaro.org> 1366803776 +0530
committer Tejun Heo <tj@kernel.org> 1368553807 -0700

block: queue work on power efficient wq

Block layer uses workqueues for multiple purposes. There is 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 normal workqueues with power efficient versions.

Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Tejun Heo <tj@kernel.org>