linux-kernel - [PATCH v1 0/6] Simplify linking against tools/perf code

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Date:   Mon, 27 Mar 2023 18:40:52 -0700
From:   Ian Rogers <irogers@...gle.com>
To:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Ian Rogers <irogers@...gle.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        John Garry <john.g.garry@...cle.com>,
        Will Deacon <will@...nel.org>,
        James Clark <james.clark@....com>,
        Mike Leach <mike.leach@...aro.org>,
        Leo Yan <leo.yan@...aro.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Kan Liang <kan.liang@...ux.intel.com>,
        Raul Silvera <rsilvera@...gle.com>,
        Athira Rajeev <atrajeev@...ux.vnet.ibm.com>,
        Ravi Bangoria <ravi.bangoria@....com>,
        Florian Fischer <florian.fischer@...q.space>,
        Rob Herring <robh@...nel.org>,
        Xing Zhengjun <zhengjun.xing@...ux.intel.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Chengdong Li <chengdongli@...cent.com>,
        Denis Nikitin <denik@...omium.org>,
        "Martin Liška" <mliska@...e.cz>,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, coresight@...ts.linaro.org
Subject: [PATCH v1 0/6] Simplify linking against tools/perf code

When fuzzing something like parse-events, having the main function in
perf.c alongside global variables like input_name means that
input_name must be redeclared with the fuzzer function's
main. However, as the fuzzer is using the tools/perf code as a library
this causes backward linking reference that the linker may warn
about. Reorganize perf.c and perf.h to avoid potential backward
references, or so that the declaration/definition locations are more
consistent.

Ian Rogers (6):
  perf ui: Move window resize signal functions
  perf usage: Move usage strings
  perf header: Move perf_version_string declaration
  perf version: Use regular verbose flag
  perf util: Move input_name to util
  perf util: Move perf_guest/host declarations

 tools/perf/builtin-annotate.c     |  2 +-
 tools/perf/builtin-buildid-list.c |  2 +-
 tools/perf/builtin-c2c.c          |  2 +-
 tools/perf/builtin-data.c         |  2 +-
 tools/perf/builtin-diff.c         |  2 +-
 tools/perf/builtin-evlist.c       |  2 +-
 tools/perf/builtin-help.c         |  1 +
 tools/perf/builtin-kmem.c         |  2 +-
 tools/perf/builtin-kvm.c          |  1 +
 tools/perf/builtin-kwork.c        |  2 +-
 tools/perf/builtin-mem.c          |  2 +-
 tools/perf/builtin-sched.c        |  2 +-
 tools/perf/builtin-stat.c         |  2 +-
 tools/perf/builtin-timechart.c    |  2 +-
 tools/perf/builtin-version.c      |  7 +++----
 tools/perf/builtin.h              |  3 ---
 tools/perf/perf.c                 | 27 +--------------------------
 tools/perf/perf.h                 |  9 ---------
 tools/perf/ui/browsers/hists.c    |  2 +-
 tools/perf/ui/hist.c              |  2 +-
 tools/perf/ui/setup.c             | 19 +++++++++++++++++++
 tools/perf/ui/tui/setup.c         |  1 -
 tools/perf/ui/ui.h                |  3 +++
 tools/perf/util/cs-etm.c          |  1 +
 tools/perf/util/event.c           |  2 +-
 tools/perf/util/evlist.c          |  1 +
 tools/perf/util/header.h          |  2 ++
 tools/perf/util/parse-events.c    |  2 +-
 tools/perf/util/session.c         |  2 +-
 tools/perf/util/top.c             |  2 +-
 tools/perf/util/usage.c           |  6 ++++++
 tools/perf/util/util.c            |  2 ++
 tools/perf/util/util.h            |  8 ++++++++
 33 files changed, 66 insertions(+), 61 deletions(-)

-- 
2.40.0.348.gf938b09366-goog