linux-kernel - Re: [PATCH 0/5] perf script python: Provide perf

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Date:   Fri, 21 Jul 2017 09:51:31 -0700
From:   Arun Kalyanasundaram <arunkaly@...gle.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Jiri Olsa <jolsa@...hat.com>, linux-kernel@...r.kernel.org,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        "David S . Miller" <davem@...emloft.net>,
        SeongJae Park <sj38.park@...il.com>,
        David Carrillo-Cisneros <davidcc@...gle.com>,
        Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH 0/5] perf script python: Provide perf_sample dict to all handlers

My apologies. Yes, I did make a couple of changes to the patch. I was
not sure if I should be sending a v2 since the previous one was a rfc.
Please ignore this patch, I will resend this highlighting the new
changes made.

On Fri, Jul 21, 2017 at 9:28 AM, Arnaldo Carvalho de Melo
<acme@...nel.org> wrote:
> Em Fri, Jul 21, 2017 at 09:46:39AM +0200, Jiri Olsa escreveu:
>> On Thu, Jul 20, 2017 at 07:01:13PM -0700, Arun Kalyanasundaram wrote:
>> > The process_event python hook receives a dict with most perf_sample
>> > entries.
>>
>> hi,
>> was there any change to the rfc post?
>
> I was wondering that, please stick a v1, v2, etc to the subject, and
> state the changes across versions, to make things clear.
>
> - Arnaldo
>
>> thanks,
>> jirka
>>
>> >
>> > Other handlers (e.g. trace_unhandled, python_process_tracepoint) predate
>> > the introduction of this dict and do not receive it. This patch series
>> > adds the dict to all handlers, aiming to unify the information passed to
>> > them.
>> >
>> > This change adds an additional argument to the affected handlers. To
>> > keep backwards compatibility (and avoid unnecessary work), do not pass
>> > the aforementioned dict if the number of arguments signals that handler
>> > version predates this change.
>> >
>> > In addition, provide time_enabled, time_running and counter value in the
>> > perf_sample dict.
>> >
>> > Initial Discussion: https://lkml.org/lkml/2017/7/1/108
>> >
>> > Arun Kalyanasundaram (5):
>> >   perf script python: Allocate memory only if handler exists
>> >   perf script python: Refactor creation of perf sample dict
>> >   perf script python: Add sample_read to dict
>> >   perf script python: Add perf_sample dict to tracepoint handlers
>> >   perf script python: Generate hooks with additional argument
>> >
>> >  .../util/scripting-engines/trace-event-python.c    | 246 +++++++++++++++------
>> >  1 file changed, 184 insertions(+), 62 deletions(-)
>> >
>> > --
>> > 2.14.0.rc0.284.gd933b75aa4-goog
>> >