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