linux-kernel - [PATCH 0/5] perf tools: Clean up cpu map handling for system-wide evsel (v3)

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Date:   Mon,  3 Oct 2022 13:46:42 -0700
From:   Namhyung Kim <namhyung@...nel.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Jiri Olsa <jolsa@...nel.org>
Cc:     Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Ian Rogers <irogers@...gle.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        linux-perf-users@...r.kernel.org,
        Kan Liang <kan.liang@...ux.intel.com>,
        Leo Yan <leo.yan@...aro.org>
Subject: [PATCH 0/5] perf tools: Clean up cpu map handling for system-wide evsel (v3)

Hello,

The system-wide evsel has a cpu map for all (online) cpus regardless
of user requested cpus.  But the cpu map handling code has some
special case for it and I think we can cleanup the code by making sure
that such a evsel has a proper cpu/thread maps from the beginning.
This patches should not cause any change in the behavior.

Changes from v2:
 * build evlist->core.all_cpus from the beginning  (Adrian)

Changes from v1:
 * use evlist->core.needs_map_propagation field
 * add Reviewed-by from Adrian

You can get the code from 'perf/cpumap-update-v3' branch in

  git://git.kernel.org/pub/scm/linux/kernel/git/namhyung/linux-perf.git

Thanks,
Namhyung

Namhyung Kim (5):
  libperf: Populate system-wide evsel maps
  libperf: Propagate maps only if necessary
  perf tools: Get rid of evlist__add_on_all_cpus()
  perf tools: Add evlist__add_sched_switch()
  perf tools: Remove special handling of system-wide evsel

 tools/lib/perf/evlist.c                  | 26 +++++++-------
 tools/lib/perf/evsel.c                   |  3 --
 tools/lib/perf/include/internal/evlist.h |  1 +
 tools/perf/arch/x86/util/intel-pt.c      | 15 +++-----
 tools/perf/builtin-script.c              |  3 --
 tools/perf/tests/switch-tracking.c       | 15 +++-----
 tools/perf/util/evlist.c                 | 46 ++++++++++--------------
 tools/perf/util/evlist.h                 |  1 +
 tools/perf/util/evsel.c                  | 12 ++-----
 tools/perf/util/stat.c                   |  3 --
 10 files changed, 46 insertions(+), 79 deletions(-)


base-commit: 62e64c9d2fd12839c02f1b3e8b873e7cb34e8720
-- 
2.38.0.rc1.362.ged0d419d3c-goog