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SubjectRe: [PATCH 0/4] ftrace: Add 'function-fork' trace option (v1)
On Wed, 29 Mar 2017 10:46:21 +0900
Namhyung Kim <namhyung@kernel.org> wrote:

> 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.

By the way, I thought that event-fork option also effected to
function tracer. Is there any reason we should separate those?
I mean, we can add "trace-fork" option instead of "function-fork"
for setting both pid filters at once.

Thank you,

>
> The code is also available at 'ftrace/function-fork-v1' 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 | 47 ++++++++++-
> 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, 158 insertions(+), 6 deletions(-)
> create mode 100644 tools/testing/selftests/ftrace/test.d/ftrace/func-filter-pid.tc
>
> --
> 2.12.0
>


--
Masami Hiramatsu <mhiramat@kernel.org>

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