linux-kernel - Re: [PATCH 3/5] workqueue: Create low-level unbound workqueues cpumask

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Message-ID: <alpine.DEB.2.10.1405161350360.1681@gentwo.org>
Date:	Fri, 16 May 2014 13:52:48 -0500 (CDT)
From:	Christoph Lameter <cl@...ux.com>
To:	Tejun Heo <tj@...nel.org>
cc:	Frederic Weisbecker <fweisbec@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Kevin Hilman <khilman@...aro.org>,
	Lai Jiangshan <laijs@...fujitsu.com>,
	Mike Galbraith <bitbucket@...ine.de>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Viresh Kumar <viresh.kumar@...aro.org>
Subject: Re: [PATCH 3/5] workqueue: Create low-level unbound workqueues
 cpumask

On Fri, 16 May 2014, Tejun Heo wrote:

> On Fri, May 16, 2014 at 12:52:26PM -0500, Christoph Lameter wrote:
> > On Fri, 16 May 2014, Frederic Weisbecker wrote:
> >
> > > It works on a lower-level than the per WQ_SYSFS workqueues cpumask files
> > > such that the effective cpumask applied for a given unbound workqueue is
> > > the intersection of /sys/devices/virtual/workqueue/$WORKQUEUE/cpumask and
> > > the new /sys/devices/virtual/workqueue/cpumask_unbounds file.
> >
> > Why is there "virtual" directory in the path? Workqueues are "virtual"
> > devices?
>
> I ain't an actual one.  That apparently is the preferred place to
> present software constructs like workqueues in sysfs.

Could we fix that? A workqueue is not a device but more a kernel setting.

/sys/kernel/workqueue/.... ?


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