linux-kernel - [PATCH V2 0/6] perf tools: Enable AUX area tracing snapshots using a FIFO

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Message-Id: <20200901093758.32293-1-adrian.hunter@intel.com>
Date:   Tue,  1 Sep 2020 12:37:52 +0300
From:   Adrian Hunter <adrian.hunter@...el.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Jiri Olsa <jolsa@...hat.com>, Andi Kleen <ak@...ux.intel.com>,
        Alexey Budankov <alexey.budankov@...ux.intel.com>,
        Namhyung Kim <namhyung@...nel.org>,
        linux-kernel@...r.kernel.org
Subject: [PATCH V2 0/6] perf tools: Enable AUX area tracing snapshots using a FIFO

Hi

Here are V2 patches to enable AUX area tracing snapshots using a FIFO.
Presently SIGUSR2 can be used but the advantage of the FIFO is that access
is governed by access to the FIFO.  Refer to the example in patch 5.

The first 4 patches are preparation, including patch 4 which enhances the
--control option to accept file names.

Patch 5 adds snapshot control command.

The final patch updates Intel PT documentation.


Changes in V2:
	Use fifo: prefix in --control option


Adrian Hunter (6):
      perf tools: Consolidate --control option parsing into one function
      perf tools: Handle read errors from ctl_fd
      perf tools: Use AsciiDoc formatting for --control option documentation
      perf tools: Add FIFO file names as alternative options to --control
      perf record: Add 'snapshot' control command
      perf intel-pt: Document snapshot control command

 tools/perf/Documentation/perf-intel-pt.txt | 23 ++++++-
 tools/perf/Documentation/perf-record.txt   | 56 ++++++++---------
 tools/perf/Documentation/perf-stat.txt     | 48 ++++++++-------
 tools/perf/builtin-record.c                | 74 +++++++++++++----------
 tools/perf/builtin-stat.c                  | 35 +++++------
 tools/perf/util/evlist.c                   | 96 +++++++++++++++++++++++++++---
 tools/perf/util/evlist.h                   |  6 +-
 tools/perf/util/record.h                   |  1 +
 tools/perf/util/stat.h                     |  1 +
 9 files changed, 227 insertions(+), 113 deletions(-)


Regards
Adrian