Re: [PATCH 1/2] nohz: Select VIRT_CPU_ACCOUNTING_GEN from fulldynticks config

[Frederic Weisbecker]

On Fri, Apr 26, 2013 at 08:39:56AM -0700, Paul E. McKenney wrote:
> >  config VIRT_CPU_ACCOUNTING_GEN
> >  	bool "Full dynticks CPU time accounting"
> > -	depends on HAVE_CONTEXT_TRACKING && 64BIT
> > +	depends on HAVE_CONTEXT_TRACKING && 64BIT && NO_HZ_FULL
> 
> Do you really want this change?  This prohibits VIRT_CPU_ACCOUNTING_GEN
> unless NO_HZ_FULL, which means that it can no longer be used in situations
> where it used to be usable.  My guess is that you want to leave this
> particular line as it was.

Hmm, this can make sense. This can be used to perform comparisons between
tick-based and tickless cputime accounting easily.

I'll respin.
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