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

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Date:	Tue, 15 Jul 2014 10:59:01 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Andi Kleen <ak@...ux.intel.com>
Cc:	Stephane Eranian <eranian@...gle.com>,
	Andi Kleen <andi@...stfloor.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/2] perf, x86: Don't mark DataLA addresses as store

On Mon, Jul 14, 2014 at 09:05:42PM -0700, Andi Kleen wrote:

> Yes, there are only three store events:
> 
> MEM_UOPS_RETIRED.STLB_MISS_STORES
> MEM_UOPS_RETIRED.SPLIT_STORES
> MEM_UOPS_RETIRED.ALL_STORES
> 
> These can be added.
> 
> But most others are loads, so if you wanted loads too (besides mem-loads)
> it would be nearly a full list.

Of that list you had earlier:

MEM_UOPS_RETIRED.STLB_MISS_LOADS
MEM_UOPS_RETIRED.STLB_MISS_STORES
MEM_UOPS_RETIRED.LOCK_LOADS
MEM_UOPS_RETIRED.SPLIT_LOADS
MEM_UOPS_RETIRED.SPLIT_STORES
MEM_UOPS_RETIRED.ALL_LOADS
MEM_UOPS_RETIRED.ALL_STORES

There's only 4 loads and (as you already said) 3 stores.

That's 7 events total, that's not nearly a full list.

The other events:

UOPS_RETIRED.ALL
MEM_LOAD_UOPS_RETIRED.L1_HIT
MEM_LOAD_UOPS_RETIRED.L2_HIT
MEM_LOAD_UOPS_RETIRED.L3_HIT
MEM_LOAD_UOPS_RETIRED.L1_MISS
MEM_LOAD_UOPS_RETIRED.L2_MISS
MEM_LOAD_UOPS_RETIRED.L3_MISS
MEM_LOAD_UOPS_RETIRED.HIT_LFB
MEM_LOAD_UOPS_L3_HIT_RETIRED.XSNP_MISS
MEM_LOAD_UOPS_L3_HIT_RETIRED.XSNP_HIT
MEM_LOAD_UOPS_L3_HIT_RETIRED.XSNP_HITM
MEM_LOAD_UOPS_L3_HIT_RETIRED.XSNP_NONE
MEM_LOAD_UOPS_L3_MISS_RETIRED.LOCAL_DRAM

are unclear on their type and should indeed be NA.

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