linux-kernel - Re: [PATCH V2 0/5] Clean up perf mem

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Message-ID: <ZXIrtcYkvpA8Uwj1@kernel.org>
Date:   Thu, 7 Dec 2023 17:31:49 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     kan.liang@...ux.intel.com, ravi.bangoria@....com
Cc:     irogers@...gle.com, peterz@...radead.org, mingo@...hat.com,
        namhyung@...nel.org, jolsa@...nel.org, adrian.hunter@...el.com,
        john.g.garry@...cle.com, will@...nel.org, james.clark@....com,
        mike.leach@...aro.org, leo.yan@...aro.org,
        yuhaixin.yhx@...ux.alibaba.com, renyu.zj@...ux.alibaba.com,
        tmricht@...ux.ibm.com, ravi.bangoria@....com,
        linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH V2 0/5] Clean up perf mem

Em Thu, Dec 07, 2023 at 11:23:33AM -0800, kan.liang@...ux.intel.com escreveu:
> From: Kan Liang <kan.liang@...ux.intel.com>
> 
> Changes since V1:
> - Fix strcmp of PMU name checking (Ravi)
> - Fix "/," typo (Ian)
> - Rename several functions with perf_pmu__mem_events prefix. (Ian)
> - Fold the header removal patch into the patch where the cleanups made.
>   (Arnaldo)
> - Add reviewed-by and tested-by from Ian and Ravi

It would be good to have a Tested-by from people working in all the
architectures affectes, like we got from Ravi for AMD, can we get those?

I'm applying it locally for test building, will push to
perf-tools-next/tmp.perf-tools-next for a while, so there is some time
to test.

ARM64 (Leo?) and ppc, for PPC... humm Ravi did it, who could test it now?

- Arnaldo
 
> As discussed in the below thread, the patch set is to clean up perf mem.
> https://lore.kernel.org/lkml/afefab15-cffc-4345-9cf4-c6a4128d4d9c@linux.intel.com/
> 
> Introduce generic functions perf_mem_events__ptr(),
> perf_mem_events__name() ,and is_mem_loads_aux_event() to replace the
> ARCH specific ones.
> Simplify the perf_mem_event__supported().
> 
> Only keeps the ARCH-specific perf_mem_events array in the corresponding
> mem-events.c for each ARCH.
> 
> There is no functional change.
> 
> The patch set touches almost all the ARCHs, Intel, AMD, ARM, Power and
> etc. But I can only test it on two Intel platforms.
> Please give it try, if you have machines with other ARCHs.
> 
> Here are the test results:
> Intel hybrid machine:
> 
> $perf mem record -e list
> ldlat-loads  : available
> ldlat-stores : available
> 
> $perf mem record -e ldlat-loads -v --ldlat 50
> calling: record -e cpu_atom/mem-loads,ldlat=50/P -e cpu_core/mem-loads,ldlat=50/P
> 
> $perf mem record -v
> calling: record -e cpu_atom/mem-loads,ldlat=30/P -e cpu_atom/mem-stores/P -e cpu_core/mem-loads,ldlat=30/P -e cpu_core/mem-stores/P
> 
> $perf mem record -t store -v
> calling: record -e cpu_atom/mem-stores/P -e cpu_core/mem-stores/P
> 
> 
> Intel SPR:
> $perf mem record -e list
> ldlat-loads  : available
> ldlat-stores : available
> 
> $perf mem record -e ldlat-loads -v --ldlat 50
> calling: record -e {cpu/mem-loads-aux/,cpu/mem-loads,ldlat=50/}:P
> 
> $perf mem record -v
> calling: record -e {cpu/mem-loads-aux/,cpu/mem-loads,ldlat=30/}:P -e cpu/mem-stores/P
> 
> $perf mem record -t store -v
> calling: record -e cpu/mem-stores/P
> 
> Kan Liang (5):
>   perf mem: Add mem_events into the supported perf_pmu
>   perf mem: Clean up perf_mem_events__ptr()
>   perf mem: Clean up perf_mem_events__name()
>   perf mem: Clean up perf_mem_event__supported()
>   perf mem: Clean up is_mem_loads_aux_event()
> 
>  tools/perf/arch/arm64/util/mem-events.c   |  36 +----
>  tools/perf/arch/arm64/util/pmu.c          |   6 +
>  tools/perf/arch/powerpc/util/mem-events.c |  13 +-
>  tools/perf/arch/powerpc/util/mem-events.h |   7 +
>  tools/perf/arch/powerpc/util/pmu.c        |  11 ++
>  tools/perf/arch/s390/util/pmu.c           |   3 +
>  tools/perf/arch/x86/util/mem-events.c     |  99 ++----------
>  tools/perf/arch/x86/util/pmu.c            |  11 ++
>  tools/perf/builtin-c2c.c                  |  28 +++-
>  tools/perf/builtin-mem.c                  |  28 +++-
>  tools/perf/util/mem-events.c              | 181 +++++++++++++---------
>  tools/perf/util/mem-events.h              |  15 +-
>  tools/perf/util/pmu.c                     |   4 +-
>  tools/perf/util/pmu.h                     |   7 +
>  14 files changed, 233 insertions(+), 216 deletions(-)
>  create mode 100644 tools/perf/arch/powerpc/util/mem-events.h
>  create mode 100644 tools/perf/arch/powerpc/util/pmu.c
> 
> -- 
> 2.35.1
> 

-- 

- Arnaldo