linux-kernel - Re: [PATCH 2/2] perf, x86: Don't mark DataLA addresses as store

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Date:	Tue, 15 Jul 2014 00:49:43 +0200
From:	Stephane Eranian <eranian@...gle.com>
To:	Andi Kleen <ak@...ux.intel.com>
Cc:	Andi Kleen <andi@...stfloor.org>,
	Peter Zijlstra <peterz@...radead.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/2] perf, x86: Don't mark DataLA addresses as store

On Tue, Jul 15, 2014 at 12:39 AM, Andi Kleen <ak@...ux.intel.com> wrote:
>> I have a problem with this patch.
>>
>> It makes: perf mem -t store rec record OP_NA for the store.
>> It was recording OP_STORE before.
>>
>> I think we need to keep LD/ST info. This is useful for analysis
>> especially if we collect loads/stores simultaneously.
>>
>> Was working before for the mem-loads, mem-stores events.
>
> Ok. Would it be enough if it only worked for "mem-stores" and not
> all PEBS events?
>
Ok, do that at a minimum.

> Otherwise have to go back to an even larger PEBS constraint
> table for HSW than before.
>
> -Andi
>
> --
> ak@...ux.intel.com -- Speaking for myself only
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