Re: [PATCH 15/32] nohz/cpuset: Restart tick when switching to idle task

Peter Zijlstra
2011-08-29T15:44:11Z

On Mon, 2011-08-15 at 17:52 +0200, Frederic Weisbecker wrote:
> Ideally if we are in adaptive nohz mode and we switch to the
> the idle task, we shouldn't restart the tick since it's going
> to stop the tick soon anyway.
>
> That optimization requires some minor tweaks here and there
> though, lets handle that later.

You have a knack for confusing changelogs.. so basically you say:

Restart the tick when we switch to idle.

Now all that needs is an explanation of why..

Also, please drop the whole cpuset_nohz_ stuff, this really isn't about
cpusets, cpusets simly provide the interface, the functionality lives in
the tick_nohz_ namespace.