Re: [RFC GIT PULL] nohz: Basic cputime accounting for adaptivetickless

[Frederic Weisbecker]

On Thu, Jun 14, 2012 at 11:07:09AM +0200, Peter Zijlstra wrote:
> On Wed, 2012-06-13 at 18:19 +0200, Frederic Weisbecker wrote:
> > Ingo, Thomas,
> > 
> > This starts the basic code that allow accounting of cputime spent tickless
> > outside idle, which is a first step to prepare for the adaptive nohz
> > infrastructure.
> > 
> > I hope we can set a tree in -tip for that. If you're fine with it
> > this is pullable from:
> 
> There's a number of architecture that already does fine grained
> user/kernel time accounting on syscall boundaries etc.. s390, powerpc
> and ia64.
> 
> You're now adding a 3rd way of accounting user/kernel time.. I'm not
> much looking fwd to that..

You're right, I should have looked into CONFIG_VIRT_CPU_ACCOUNTING sooner
and see if I can reuse it.

I'll try something with that.
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