Re: [RFC] Restrict kernel spawning of threads to a specified set ofcpus.

[Christoph Lameter]

On Thu, 12 Sep 2013, Frederic Weisbecker wrote:

> On Thu, Sep 12, 2013 at 02:10:56PM +0000, Christoph Lameter wrote:
> > On Thu, 12 Sep 2013, Frederic Weisbecker wrote:
> >
> > > Why not do this from userspace instead?
> >
> > Because the cpumasks are hardcoded in the kernel code.
> >
>
> Ok but you can change the affinity of a kthread from userspace, as
> long as you define a cpu set that is among that kthread's cpus allowed.

Ok but at that point kthread has already spawned a lot of kernel threads.

The same is true for init and kmod.

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