linux-kernel - [PATCHv3 0/3] perf python: Add support to access tracepoint fields

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Date:	Sat, 16 Jul 2016 18:11:17 +0200
From:	Jiri Olsa <jolsa@...nel.org>
To:	Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:	lkml <linux-kernel@...r.kernel.org>,
	David Ahern <dsahern@...il.com>,
	Ingo Molnar <mingo@...nel.org>,
	Namhyung Kim <namhyung@...nel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	"Steven Rostedt (Red Hat)" <rostedt@...dmis.org>,
	Jiri Pirko <jiri@...lanox.com>
Subject: [PATCHv3 0/3] perf python: Add support to access tracepoint fields

hi,
adding support to access tracepoint fields in python scripts.

v3 changes:
  - once again fixed is_printable_array [Steven]
  - patch 3/3 already merged
  - added new patch 3/3 with automated test for is_printable_array

v2 changes:
  - most of the patches is already pulled in,
    this is just leftover
  - fixed is_printable_array [Steven]
  - making is_printable_array global
  - attached unrelated fix 3/3

With this patchset it's possible to access tracepoint fields
in event python object like:

  print "time %u prev_comm=%s prev_pid=%d prev_prio=%d prev_state=0x%x ==> next_comm=%s next_pid=%d next_prio=%d" % (
         event.sample_time,
         event.prev_comm,
         event.prev_pid,
         event.prev_prio,
         event.prev_state,
         event.next_comm,
         event.next_pid,
         event.next_prio)

Also available in:
  git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git
  perf/fixes

thanks,
jirka

---
Jiri Olsa (3):
      perf script python: Fix string vs byte array resolving
      perf tools: Make is_printable_array global
      perf tests: Add is_printable_array test

 tools/perf/tests/Build                                 |  1 +
 tools/perf/tests/builtin-test.c                        |  4 ++++
 tools/perf/tests/is_printable_array.c                  | 36 ++++++++++++++++++++++++++++++++++++
 tools/perf/tests/tests.h                               |  1 +
 tools/perf/util/python.c                               | 12 ------------
 tools/perf/util/scripting-engines/trace-event-python.c | 25 ++++++++++++++++++-------
 tools/perf/util/util.c                                 | 16 ++++++++++++++++
 tools/perf/util/util.h                                 |  1 +
 8 files changed, 77 insertions(+), 19 deletions(-)
 create mode 100644 tools/perf/tests/is_printable_array.c