linux-kernel - Re: [BUG] perf: sharing of cpuctx between core and ibs PMU causes problems

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Message-ID: <CABPqkBTSb_Q7cgBhKp97fM+6PAVM49o0-Ww4TzJjPn4FbYVAtA@mail.gmail.com>
Date:	Mon, 13 Aug 2012 17:36:31 +0200
From:	Stephane Eranian <eranian@...gle.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	"Yan, Zheng" <zheng.z.yan@...el.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Robert Richter <robert.richter@....com>, mingo@...e.hu
Subject: Re: [BUG] perf: sharing of cpuctx between core and ibs PMU causes problems

On Mon, Aug 13, 2012 at 5:32 PM, Peter Zijlstra <peterz@...radead.org> wrote:
> On Mon, 2012-08-13 at 14:53 +0200, Stephane Eranian wrote:
>>
>> Your proposal solves the problem, though it is not that pretty because
>> you're exposing
>> IBS stuff in sched.h aside for the 2 new iterations. But I don't see
>> another way around
>> this at this point.
>
> Yeah, I don't particularly like it either.. but I'm having a similar
> problem of not seeing anything better.
>
> I was going to see if I could make the two IBS PMUs share something, but
> that's going to be pain whichever way you turn it.

Let's use your patch then.

Acked-by: Stephane Eranian <eranian@...gle.com>
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