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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <DC029166-B60F-4E90-833D-F43818A3C54B@linux.vnet.ibm.com>
Date:   Wed, 13 Dec 2023 15:21:56 +0530
From:   Athira Rajeev <atrajeev@...ux.vnet.ibm.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Ravi Bangoria <ravi.bangoria@....com>
Cc:     Kan Liang <kan.liang@...ux.intel.com>,
        Ian Rogers <irogers@...gle.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Jiri Olsa <jolsa@...nel.org>,
        Adrian Hunter <adrian.hunter@...el.com>,
        john.g.garry@...cle.com, Will Deacon <will@...nel.org>,
        James Clark <james.clark@....com>, mike.leach@...aro.org,
        Leo Yan <leo.yan@...aro.org>, yuhaixin.yhx@...ux.alibaba.com,
        renyu.zj@...ux.alibaba.com, Thomas Richter <tmricht@...ux.ibm.com>,
        LKML <linux-kernel@...r.kernel.org>,
        linux-perf-users <linux-perf-users@...r.kernel.org>,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH V2 0/5] Clean up perf mem



> On 08-Dec-2023, at 2:01 AM, Arnaldo Carvalho de Melo <acme@...nel.org> wrote:
> 
> 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?
Hi Arnaldo, Ravi

Looking into this for testing on powerpc. Will update back.

Thanks
Athira
> 
> - 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