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

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-next>] [day] [month] [year] [list]

Message-Id: <20220422093833.340873-1-nakamura.shun@fujitsu.com>
Date:   Fri, 22 Apr 2022 18:38:26 +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: [PATCH 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 move 'open_flags' from tools/perf to evsel::open_flags.

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

Third patch add support for overflow handling of sampling events.

Fourth patch adds a interface to check overflowed events.

Fifth patch adds a interface to perform IOC_REFRESH and IOC_PERIOD.

Sixth and seventh patch adds tests.


---
Previous version at:
https://lore.kernel.org/linux-perf-users/20220325043829.224045-1-nakamura.shun@fujitsu.com/

Changes in v1:
 - Move initialization/reference of evsel->open_flags from the first
   patch to the second patch
 - Move signal-related handling and related fields of the opts
   structure from the second patch to the third patch
 - Move _GNU_SOURCE from test-evlist.c to Makefile
 - Delete *_cpu() function
 - Refactor the fourth patch
 - Fix test to use real-time signals instead of standard signals

Changes in RFC 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: Move 'open_flags' from tools/perf to evsel::open_flags
  libperf: Introduce perf_{evsel, evlist}__open_opt with extensible
    struct opts
  libperf: Add support for overflow handling of sampling events
  libperf: Add perf_evsel__has_fd() functions
  libperf: Add perf_evsel__{refresh, period}() functions
  libperf test: Add test_stat_overflow()
  libperf test: Add test_stat_overflow_event()

 tools/lib/perf/Documentation/libperf.txt |  17 +++
 tools/lib/perf/Makefile                  |   1 +
 tools/lib/perf/evlist.c                  |  20 +++
 tools/lib/perf/evsel.c                   | 166 ++++++++++++++++++++++-
 tools/lib/perf/include/internal/evsel.h  |   2 +
 tools/lib/perf/include/perf/evlist.h     |   3 +
 tools/lib/perf/include/perf/evsel.h      |  29 ++++
 tools/lib/perf/internal.h                |  44 ++++++
 tools/lib/perf/libperf.map               |   5 +
 tools/lib/perf/tests/test-evlist.c       | 112 ++++++++++++++-
 tools/lib/perf/tests/test-evsel.c        | 108 +++++++++++++++
 tools/perf/util/evsel.c                  |  16 ++-
 tools/perf/util/evsel.h                  |   1 -
 13 files changed, 508 insertions(+), 16 deletions(-)

-- 
2.25.1