linux-kernel - [PATCH RFC v3 0/4] Add support to record and display tgid of tasks

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Message-Id: <20170609025327.9508-1-joelaf@google.com>
Date:   Thu,  8 Jun 2017 19:53:23 -0700
From:   Joel Fernandes <joelaf@...gle.com>
To:     linux-kernel@...r.kernel.org
Cc:     mikesart@...il.com, Joel Fernandes <joelaf@...gle.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Ingo Molnar <mingo@...hat.com>, kernel-team@...roid.com
Subject: [PATCH RFC v3 0/4]  Add support to record and display tgid of tasks

Hi Steven, Ingo,

Here is a new patch series [1] with more improvements and fixes.

Android systrace viewer heavily depends on the tgid to group tasks. tgid is
also useful for analyzing traces and generating analysis results for groups of
tasks. Also Michael Sartain said he also has a need for it and helped test the
series (I have added him to CC).

Following are the improvements in this series:
* Preserve existing API for existing callers
* Memory leak fix
* Improved trace output code

Looking forward to your thoughts about comments, thanks.

Joel Fernandes (4):
  tracing: Remove unused declaration of trace_stop_cmdline_recording
  tracing: Add support for recording tgid of tasks
  tracing: Add support for display of tgid in trace output
  tracing/ftrace: Add support to record and display tgid

 include/linux/trace_events.h      |  12 +++-
 kernel/trace/trace.c              | 140 +++++++++++++++++++++++++++++++-------
 kernel/trace/trace.h              |   8 +++
 kernel/trace/trace_events.c       |  42 +++++++++++-
 kernel/trace/trace_functions.c    |  26 +++++++
 kernel/trace/trace_output.c       |   9 +++
 kernel/trace/trace_sched_switch.c |  79 +++++++++++++++++----
 7 files changed, 274 insertions(+), 42 deletions(-)

[1] https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1412260.html

Cc: Steven Rostedt <rostedt@...dmis.org>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: kernel-team@...roid.com
Cc: Michael Sartain <mikesart@...il.com>
-- 
2.13.0.506.g27d5fe0cd-goog