lkml.org 
[lkml]   [2013]   [Sep]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [RFC] Restrict kernel spawning of threads to a specified set of cpus.
On Fri, Sep 13, 2013 at 01:45:55PM +0000, Christoph Lameter wrote:
> On Thu, 12 Sep 2013, Frederic Weisbecker wrote:
>
> > So yeah it's a problem in theory. Now in practice, I have yet to be convinced because
> > this should be solved after a few iterations in /proc in most cases.
>
> I have seen some drivers regularly spawning threads all over the machnine.
> This is a practical issue that I am addresing.
> >
> > Now the issue doesn't only concern kthreads but all tasks in the system.
> > If we really want to solve that race, then may be we can think of a kernel_parameter
> > that sets the initial affinity of init and then lets get it naturally inherited
> > through the whole tree.
>
> This patch that we are discussing does exactly that.
>

Indeed, I just looked that again and your cpu_kthread_mask actually also applies to init.
cpu_init_mask would be a better name I think.


\
 
 \ /
  Last update: 2013-09-13 23:21    [W:0.084 / U:0.316 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site