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

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Date:	Tue, 15 Jul 2014 00:50:27 +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 12:49 AM, Stephane Eranian <eranian@...gle.com> wrote:
> 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.
>
But if I recall the PEBS stores events were not that many to begin with.

>> 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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