Re: [PATCH] nohz: Revert "nohz: Set isolcpus when nohz_full is set"

Frederic Weisbecker
2015-10-12T17:50:38Z

On Mon, Oct 12, 2015 at 12:45:08PM -0500, Christoph Lameter wrote:
> On Mon, 12 Oct 2015, Frederic Weisbecker wrote:
>
> > But yeah if you guys want to create a new parameter that gathers nohz
> > and isolcpus I think we can.
>
> Could we also add the rcu settings?

Yeah, those are implied by nohz_full anyway.

Now nohz_full shouldn't imply anything else than nohz but I'm not sure
I can change that. Kernel parameters are ABIs of some sort.

Ideally we should have something like cpu_isolation= which implies everything.

>
> > task_isolation is really just about tasks so it should be another name.
>
> no_os_cpus?
>
> os_free_cpus?

No, we can still do syscalls :-)

But noise_free_cpus= ?