linux-kernel - Re: [PATCH 0/4] perf: Add new macros for mem

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Message-ID: <YbJWVYZg1el9PR1I@kernel.org>
Date:   Thu, 9 Dec 2021 16:17:41 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Kajol Jain <kjain@...ux.ibm.com>
Cc:     mpe@...erman.id.au, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org, peterz@...radead.org,
        mingo@...hat.com, jolsa@...nel.org, namhyung@...nel.org,
        ak@...ux.intel.com, linux-perf-users@...r.kernel.org,
        maddy@...ux.ibm.com, atrajeev@...ux.vnet.ibm.com,
        rnsastry@...ux.ibm.com, yao.jin@...ux.intel.com, ast@...nel.org,
        daniel@...earbox.net, songliubraving@...com,
        kan.liang@...ux.intel.com, mark.rutland@....com,
        alexander.shishkin@...ux.intel.com, paulus@...ba.org
Subject: Re: [PATCH 0/4] perf: Add new macros for mem_hops field

Em Mon, Dec 06, 2021 at 02:47:45PM +0530, Kajol Jain escreveu:
> Patchset adds new macros for mem_hops field which can be
> used to represent remote-node, socket and board level details.
> 
> Currently the code had macro for HOPS_0, which corresponds
> to data coming from another core but same node.
> Add new macros for HOPS_1 to HOPS_3 to represent
> remote-node, socket and board level data.
> 
> For ex: Encodings for mem_hops fields with L2 cache:

I checked and this hasn't hit mainstream, is it already merged on a tree
where this is slated to be submitted in the next window? If so please
let me know which one so that I can merge it on perf/core.

- Arnaldo
 
> L2                      - local L2
> L2 | REMOTE | HOPS_0    - remote core, same node L2
> L2 | REMOTE | HOPS_1    - remote node, same socket L2
> L2 | REMOTE | HOPS_2    - remote socket, same board L2
> L2 | REMOTE | HOPS_3    - remote board L2
> 
> Patch 1 & 2 adds tool and kernel side changes to add new macros for
> mem_hops field
> 
> Patch 3 add data source encodings for power10 and older platforms
> to represent data based on newer composite  PERF_MEM_LVLNUM* fields
> 
> Patch 4 add data source encodings with proper sub_index used to
> represent memory/cache level data for power10 platform.
> 
> Kajol Jain (4):
>   perf: Add new macros for mem_hops field
>   tools/perf: Add new macros for mem_hops field
>   powerpc/perf: Add encodings to represent data based on newer composite
>     PERF_MEM_LVLNUM* fields
>   powerpc/perf: Add data source encodings for power10 platform
> 
>  arch/powerpc/perf/isa207-common.c     | 60 ++++++++++++++++++++-------
>  include/uapi/linux/perf_event.h       |  5 ++-
>  tools/include/uapi/linux/perf_event.h |  5 ++-
>  tools/perf/util/mem-events.c          | 29 ++++++++-----
>  4 files changed, 71 insertions(+), 28 deletions(-)
> 
> -- 
> 2.27.0

-- 

- Arnaldo