linux-kernel - [PATCH v5 0/3] Introduce --task-name and --fuzzy-name options in perf sched map

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Date: Wed, 26 Jun 2024 14:45:47 +0530
From: Madadi Vineeth Reddy <vineethr@...ux.ibm.com>
To: Arnaldo Carvalho de Melo <acme@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>, Ian Rogers <irogers@...gle.com>,
        Athira Rajeev <atrajeev@...ux.vnet.ibm.com>,
        Chen Yu <yu.c.chen@...el.com>
Cc: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>, Adrian Hunter <adrian.hunter@...el.com>,
        Kan Liang <kan.liang@...ux.intel.com>, acme@...hat.com,
        Fernand Sieber <sieberf@...zon.com>,
        linux-perf-users <linux-perf-users@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Madadi Vineeth Reddy <vineethr@...ux.ibm.com>
Subject: [PATCH v5 0/3] Introduce --task-name and --fuzzy-name options in perf sched map

This patchset aims to reduce the amount of output printed on the terminal
when using perf sched map, allowing users to focus only on the tasks of
interest.

This helps in visualizing how a benchmark or a task is spread over
the available CPUs while also knowing which CPUs are idle(.) and which
are not(-). This will be more useful as number of CPUs increase.

Changelog:
=========
Changes in v5:
- Split the changes into different commits. (Namhyung Kim)
- Rebase against perf-tools-next commit c7a5592e8e4d ("perf mem: Fix a
  segfault with NULL event->name")
- Link to v4: https://lore.kernel.org/all/20240618180708.14144-1-vineethr@linux.ibm.com/

Changes in v4:
- Handle possible memory allocation failures. (Chen Yu)
- Link to v3: https://lore.kernel.org/all/20240617125006.31654-1-vineethr@linux.ibm.com/

Changes in v3:
- Print the sched-out timestamp as a row when using the --command-name
  option. (Namhyung Kim)
- Refactor the code.
- Rebase against perf-tools-next commit eae7044b67a6 ("perf hist: Honor
  symbol conf.skip_empty")
- Link to v2: https://lore.kernel.org/all/20240608124915.33860-1-vineethr@linux.ibm.com/

Changes in v2:
- Add support for giving multiple command-names in CSV. (Namhyung Kim)
- Add fuzzy name matching option. (Chen Yu)
- Add Reviewed-and-tested-by tag from Athira Rajeev.
- Rebase against perf-tools-next commit d2307fd4f989 ("perf maps: Add/use
  a sorted insert for fixup overlap and insert")
- Link to v1: https://lore.kernel.org/all/20240417152521.80340-1-vineethr@linux.ibm.com/

Madadi Vineeth Reddy (3):
  perf sched map: Add task-name option to filter the output map
  perf sched map: Add support for multiple task names using CSV
  perf sched map: Add --fuzzy-name option for fuzzy matching in task
    names

 tools/perf/Documentation/perf-sched.txt |  10 ++
 tools/perf/builtin-sched.c              | 224 ++++++++++++++++++++----
 2 files changed, 198 insertions(+), 36 deletions(-)

-- 
2.43.2