linux-kernel - [RFC PATCH v2 0/7] libperf: Add interface for overflow check of sampling events

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Date:   Fri, 25 Mar 2022 13:38:22 +0900
From:   Shunsuke Nakamura <nakamura.shun@...itsu.com>
To:     peterz@...radead.org, mingo@...hat.com, acme@...nel.org,
        mark.rutland@....com, alexander.shishkin@...ux.intel.com,
        jolsa@...hat.com, namhyung@...nel.org
Cc:     linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org
Subject: [RFC PATCH v2 0/7] libperf: Add interface for overflow check of sampling events

This patch series adds interface for overflow check of sampling events
to libperf.

First patch fixes a typo in the error message that I noticed.

Second patch move 'open_flags' from tools/perf to evsel::open_flags.

Third patch adds a interface to perform IOC_REFRESH and IOC_PERIOD.

Fourth patch introduce perf_{evsel, evlist}__open_opt() with extensible
structure opts.

Fifth patch adds a interface to check overflowed events.

Sixth and seventh patch adds tests.

---
Previous version at:
https://lore.kernel.org/linux-perf-users/20220225103114.144239-1-nakamura.shun@fujitsu.com/

Changes in v2:
 - Delete perf_evsel__set_close_on_exec() function
 - Introduce perf_{evsel, evlist}__open_opt() with extensible structure
   opts
 - Fix perf_evsel__set_signal() to a internal function
 - Add bool type argument to perf_evsel__check_{fd, fd_cpu}() to indicate
   overflow results


Shunsuke Nakamura (7):
  libperf tests: Fix typo in the error message
  libperf: Move 'open_flags' from tools/perf to evsel::open_flags
  libperf: Add perf_evsel__{refresh, period}() functions
  libperf: Introduce perf_{evsel, evlist}__open_opt with extensible
    struct opts
  libperf: Add perf_evsel__check_overflow() functions
  libperf test: Add test_stat_overflow()
  libperf test: Add test_stat_overflow_event()

 tools/lib/perf/Documentation/libperf.txt |  22 +++
 tools/lib/perf/evlist.c                  |  20 +++
 tools/lib/perf/evsel.c                   | 210 ++++++++++++++++++++++-
 tools/lib/perf/include/internal/evsel.h  |   2 +
 tools/lib/perf/include/perf/evlist.h     |   3 +
 tools/lib/perf/include/perf/evsel.h      |  35 ++++
 tools/lib/perf/internal.h                |  44 +++++
 tools/lib/perf/libperf.map               |   8 +
 tools/lib/perf/tests/test-evlist.c       | 135 ++++++++++++++-
 tools/lib/perf/tests/test-evsel.c        | 111 ++++++++++++
 tools/perf/util/evsel.c                  |  16 +-
 tools/perf/util/evsel.h                  |   1 -
 12 files changed, 588 insertions(+), 19 deletions(-)

-- 
2.25.1