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Message-ID: <20140322220442.GB20038@localhost.localdomain> Date: Sat, 22 Mar 2014 23:04:44 +0100 From: Frederic Weisbecker <fweisbec@...il.com> To: Tejun Heo <tj@...nel.org> Cc: Kevin Hilman <khilman@...aro.org>, LKML <linux-kernel@...r.kernel.org>, Christoph Lameter <cl@...ux.com>, Mike Galbraith <bitbucket@...ine.de>, "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>, Viresh Kumar <viresh.kumar@...aro.org> Subject: Re: [PATCH 3/3] workqueue: Add anon workqueue sysfs hierarchy 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. Thanks. > > Thanks. > > -- > tejun -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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