linux-kernel - [PATCH v4 0/4] perf: add new option '--workload-attr' to set workload sched

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Message-ID: <20230727082852.916093-1-changbin.du@huawei.com>
Date:   Thu, 27 Jul 2023 16:28:48 +0800
From:   Changbin Du <changbin.du@...wei.com>
To:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>
CC:     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>,
        <linux-perf-users@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Hui Wang <hw.huiwang@...wei.com>,
        Changbin Du <changbin.du@...wei.com>
Subject: [PATCH v4 0/4] perf: add new option '--workload-attr' to set workload sched_policy/priority/cpumask

This adds a new option '--workload-attr' to set the sched_policy/priority/cpumask
of the workload to reduce system noise.

$ sudo perf stat --workload-attr fifo,40,0-3:7 -- ls

Please see patch 2/4 for more details.

v4:
  - add a test case for perf-stat. (suggeted by Ian Rogers)
  - fix warning found by 0-DAY.
v3:
  - replace taskset with --workload-attr option in documents and tests.
v2:
  - Use cpu list spec instead of cpu mask number.
  - Update documents.

Changbin Du (4):
  perf cpumap: Add __perf_cpu_map__new and perf_cpu_map__2_cpuset
  perf: add new option '--workload-attr' to set workload
    sched_policy/priority/cpumask
  perf: replace taskset with --workload-attr option
  perf test: add test case for --workload-attr option

 tools/lib/perf/cpumap.c                       |  45 ++++++-
 tools/lib/perf/include/perf/cpumap.h          |   4 +
 tools/lib/perf/libperf.map                    |   2 +
 tools/perf/Documentation/intel-hybrid.txt     |   2 +-
 tools/perf/Documentation/perf-record.txt      |   7 ++
 tools/perf/Documentation/perf-stat.txt        |   8 +-
 tools/perf/builtin-record.c                   |  26 ++++
 tools/perf/builtin-stat.c                     |  18 +++
 tools/perf/tests/cpumap.c                     |  23 ++++
 tools/perf/tests/shell/stat.sh                |  19 +++
 .../tests/shell/stat_bpf_counters_cgrp.sh     |   2 +-
 tools/perf/tests/shell/test_arm_coresight.sh  |   2 +-
 tools/perf/tests/shell/test_data_symbol.sh    |   2 +-
 tools/perf/tests/shell/test_intel_pt.sh       |   2 +-
 tools/perf/util/evlist.c                      | 116 ++++++++++++++++++
 tools/perf/util/evlist.h                      |   3 +
 tools/perf/util/target.h                      |   9 ++
 17 files changed, 281 insertions(+), 9 deletions(-)

-- 
2.25.1