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

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Date:   Fri, 21 Jul 2017 13:28:21 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Jiri Olsa <jolsa@...hat.com>
Cc:     Arun Kalyanasundaram <arunkaly@...gle.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>, davidcc@...gle.com,
        Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH 0/5] perf script python: Provide perf_sample dict to all
 handlers

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
> >