linux-kernel - Re: [PATCH -v3] perf, x86: try to handle unknown nmis with running perfctrs

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Date:	Thu, 19 Aug 2010 19:53:37 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Cyrill Gorcunov <gorcunov@...il.com>
Cc:	Don Zickus <dzickus@...hat.com>,
	Robert Richter <robert.richter@....com>,
	Lin Ming <ming.m.lin@...el.com>, Ingo Molnar <mingo@...e.hu>,
	"fweisbec@...il.com" <fweisbec@...il.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Huang, Ying" <ying.huang@...el.com>,
	Yinghai Lu <yinghai@...nel.org>,
	Andi Kleen <andi@...stfloor.org>
Subject: Re: [PATCH -v3] perf, x86: try to handle unknown nmis with running
 perfctrs

On Thu, 2010-08-19 at 21:43 +0400, Cyrill Gorcunov wrote:
> > @@ -673,7 +673,7 @@ static int p4_pmu_handle_irq(struct pt_r
> >               if (!overflow && (val & (1ULL << (x86_pmu.cntval_bits
> - 1))))
> >                       continue;
> >  
> > -             handled += overflow;
> > +             handled += !!overflow;
> 
> No need to !! here, overflowed returns [0;1] though a small nit
> and could be updated later :) 

done.
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