Re: [PATCH v3 0/5] Event parsing fixes

[Ian Rogers]

On Thu, May 9, 2024 at 10:38 PM Ian Rogers <irogers@xxxxxxxxxx> wrote:
>
> For the default events, parse from strings rather than use pre-cooked
> perf_event_attr. This fixes non-x86 heterogeneous CPUs where legacy
> hardware events wouldn't be opened for all PMUs. v2 was previously
> just patch 3 but it is extended in v3 to incorporate related fixes.
>
> When a sysfs/json event is used in preference to a legacy event, allow
> evsel__match to still function using a saved hardware config
> number. This fixes hard coded metrics in stat-shadow for events like
> "instructions" on Intel that have a sysfs file.
>
> Fix/improve uniquifying event names fixing the test "102: perf stat
> metrics (shadow stat) test:" that was broken by a formatting issue
> when the sysfs instructions event was used.
>
> Having evsel->pmu_name and evsel->pmu->name is confusing, get rid of
> the former. Fix/improve evsel__sys_has_perf_metrics in the process.
>
> Ian Rogers (5):
>   perf evsel: Add alternate_hw_config and use in evsel__match
>   perf stat: Uniquify event name improvements
>   perf stat: Remove evlist__add_default_attrs use strings
>   perf evsel x86: Make evsel__has_perf_metrics work for legacy events
>   perf evsel: Remove pmu_name

Hopefully the first 3 patches here can be a priority given the fixes.

Thanks,
Ian

>  tools/perf/arch/x86/util/evlist.c |  74 +-------
>  tools/perf/arch/x86/util/evsel.c  |  35 +++-
>  tools/perf/builtin-diff.c         |   6 +-
>  tools/perf/builtin-stat.c         | 291 ++++++++++++------------------
>  tools/perf/tests/parse-events.c   |   2 +-
>  tools/perf/util/evlist.c          |  46 +----
>  tools/perf/util/evlist.h          |  12 --
>  tools/perf/util/evsel.c           |  28 ++-
>  tools/perf/util/evsel.h           |  22 +--
>  tools/perf/util/metricgroup.c     |   4 +-
>  tools/perf/util/parse-events.c    |  52 ++++--
>  tools/perf/util/parse-events.h    |   6 +
>  tools/perf/util/pmu.c             |   6 +-
>  tools/perf/util/pmu.h             |   2 +-
>  tools/perf/util/stat-display.c    | 101 ++++++++---
>  tools/perf/util/stat-shadow.c     |  14 +-
>  tools/perf/util/stat.c            |   2 +-
>  17 files changed, 305 insertions(+), 398 deletions(-)
>
> --
> 2.45.0.118.g7fe29c98d7-goog
>