linux-kernel - Re: [PATCH] Restore deterministic CPU accounting on powerpc

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Date:	Sun, 04 Nov 2007 23:11:27 +1100
From:	Michael Neuling <mikey@...ling.org>
To:	"Balbir Singh" <balbir@...ux.vnet.ibm.com>
cc:	"Paul Mackerras" <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	linuxppc-dev@...abs.org, linux-kernel@...r.kernel.org,
	Christian Borntraeger <borntraeger@...ibm.com>,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH] Restore deterministic CPU accounting on powerpc 

> > +#ifndef CONFIG_VIRT_CPU_ACCOUNTING
> > +void account_process_tick(int user_tick)
> > +{
> > +       if (user_tick) {
> > +               account_user_time(p, jiffies_to_cputime(1));
> > +               account_user_time_scaled(p, jiffies_to_cputime(1));
> > +       } else {
> > +               account_system_time(p, HARDIRQ_OFFSET, jiffies_to_cputime(1
));
> > +               account_system_time_scaled(p, jiffies_to_cputime(1));
> > +       }
> > +}
> > +#endif
> > +
> 
> Hi, Paul,
> 
> So, scaled accounting will not be available if
> CONFIG_VIRT_CPU_ACCOUNTING is defined? Am I reading this correctly

Balbir, 

Paulus' patch will have merge issues with the scaled time cleanup patch
I posted a week or so back.  My cleanup patch is only in akpm's tree at
this stage.

Mikey
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