Re: [PATCH 07/41] cpuset: Set up interface for nohz flag

[Christoph Lameter]

On Tue, 1 May 2012, Frederic Weisbecker wrote:

> Prepare the interface to implement the nohz cpuset flag.
> This flag, once set, will tell the system to try to
> shutdown the periodic timer tick when possible.
>
> We use here a per cpu refcounter. As long as a CPU
> is contained into at least one cpuset that has the
> nohz flag set, it is part of the set of CPUs that
> run into adaptive nohz mode.

As I have said before: It would be much simpler if one could specify the
set of nohz cpus independently of cpusets. Having a flag f.e. as a file in

	/sys/devices/system/cpu/cpuX/nohz

?

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