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

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Message-Id: <20211206091749.87585-1-kjain@linux.ibm.com>
Date:   Mon,  6 Dec 2021 14:47:45 +0530
From:   Kajol Jain <kjain@...ux.ibm.com>
To:     mpe@...erman.id.au, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org, peterz@...radead.org,
        mingo@...hat.com, acme@...nel.org, jolsa@...nel.org,
        namhyung@...nel.org, ak@...ux.intel.com
Cc:     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, kjain@...ux.ibm.com
Subject: [PATCH 0/4] perf: Add new macros for mem_hops field

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:

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