lkml.org 
[lkml]   [2013]   [Nov]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH]: exec: avoid propagating PF_NO_SETAFFINITY into userspace child
On Thu, Nov 28, 2013 at 04:07:04PM +0100, Peter Zijlstra wrote:
> On Thu, Nov 28, 2013 at 10:02:10AM -0500, Tejun Heo wrote:
> > > So far I just see you breaking existing setups because you don't want to
> > > support things that work perfectly well.
> >
> > It doesn't work as explained multiple times in this thread.
>
> It used to.. just not on recent kernels. You know 'enterprise' latency.

If you're talking about khelfper and wanna restore it, it really
should be broken out into a separate kthread. It doesn't make any
sense to implement that in the workqueue framework. Why would you
implement a dedicated task inside a worker pool implementation which
makes use of the said tasks? There's even kthread_work interface
which pretty much provides workqueue-equivalent interface on top of a
single task for cases like this.

--
tejun


\
 
 \ /
  Last update: 2013-11-28 16:41    [W:4.062 / U:0.004 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site