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

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Message-ID: <4C780B4E.9060800@kernel.org>
Date:	Fri, 27 Aug 2010 12:00:30 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Don Zickus <dzickus@...hat.com>
CC:	Robert Richter <robert.richter@....com>,
	Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <peterz@...radead.org>,
	Cyrill Gorcunov <gorcunov@...il.com>,
	Lin Ming <ming.m.lin@...el.com>,
	"fweisbec@...il.com" <fweisbec@...il.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Huang, Ying" <ying.huang@...el.com>,
	Andi Kleen <andi@...stfloor.org>
Subject: Re: [PATCH -v3] perf, x86: try to handle unknown nmis with running
 perfctrs

On 08/27/2010 11:57 AM, Don Zickus wrote:
> On Fri, Aug 27, 2010 at 10:10:38AM +0200, Robert Richter wrote:
>>>  
>>>  	inc_irq_stat(apic_perf_irqs);
>>>  	ack = status;
>>> +	intel_pmu_ack_status(ack);
>>
>> I would slightly change the patch:
>>
>> There is no need for the ack variable anymore, you could directly work
>> with the status.
>>
>> I would call intel_pmu_ack_status() as close as possible after the
>> intel_pmu_get_status(), which is after 'again:'.
>>
> 
> Here is another version of the patch, which uses Robert's suggestion of
> removing the ack variable

Can you resend all three updated patches?

Thanks

Yinghai
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