Re: [PATCH 3/3] workqueue: Add anon workqueue sysfs hierarchy
From: Frederic Weisbecker
Date: Sat Mar 22 2014 - 18:04:58 EST
On Sat, Mar 22, 2014 at 02:55:51PM -0400, Tejun Heo wrote:
> On Sat, Mar 22, 2014 at 06:01:18PM +0100, Frederic Weisbecker wrote:
> > 1) Call a per workqueue mutex when a work execute on an ordered workqueue. Although
> > contention should be very rare (only while we replace the workqueue attrs and
> > switch to a new worker), frequent locking may have a visible impact.
> > 2) Have a seperate worker for all ordered workqueues. But we may lose a bit of
> > serialization with other workqueues along the way.
> Ordered workqueues are always bound to the fallback default worker
> pool. Why not just adjust cpus_allowed of the worker pool?
Now that you tell me, that sounds obvious enough. I'll try something.
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