linux-kernel - [PATCH 0/4] ftrace: Add 'function-fork' trace option (v2)

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Date:   Mon, 17 Apr 2017 11:44:26 +0900
From:   Namhyung Kim <namhyung@...nel.org>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     Ingo Molnar <mingo@...nel.org>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>, kernel-team@....com
Subject: [PATCH 0/4] ftrace: Add 'function-fork' trace option (v2)

Hello,

This patchset add 'function-fork' option to function tracer which
makes pid filter to be inherited like 'event-fork' does.  During the
test, I found a bug of pid filter on an instance directory.  The patch
1 fixes it and maybe it should go to the stable tree.

The function-fork option is disabled by default as event-fork does,
but we might consider changing the default since it seems to be more
natural from an user's perspective IMHO.

v2 changes)
 * use ftrace_clear_pids()  (Steve)
 * add Ack from Masami
 
The code is also available at 'ftrace/function-fork-v2' branch on

  git://git.kernel.org/pub/scm/linux/kernel/git/namhyung/linux-perf.git

Thanks,
Namhyung


Namhyung Kim (4):
  ftrace: Fix function pid filter on instances
  ftrace: Add 'function-fork' trace option
  selftests: ftrace: Add -l/--logdir option
  selftests: ftrace: Add a testcase for function PID filter

 kernel/trace/ftrace.c                              | 46 ++++++++++
 kernel/trace/trace.c                               |  6 +-
 kernel/trace/trace.h                               |  8 +-
 tools/testing/selftests/ftrace/ftracetest          |  5 ++
 .../ftrace/test.d/ftrace/func-filter-pid.tc        | 98 ++++++++++++++++++++++
 5 files changed, 161 insertions(+), 2 deletions(-)
 create mode 100644 tools/testing/selftests/ftrace/test.d/ftrace/func-filter-pid.tc

-- 
2.12.2