linux-kernel - Re: [RFCv2 0/8] perf tool: Add new event group management

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Date:	Wed, 4 Apr 2012 23:21:10 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	acme@...hat.com, a.p.zijlstra@...llo.nl, mingo@...e.hu,
	paulus@...ba.org, cjashfor@...ux.vnet.ibm.com, fweisbec@...il.com
Cc:	linux-kernel@...r.kernel.org, tglx@...utronix.de,
	andi@...stfloor.org
Subject: Re: [RFCv2 0/8] perf tool: Add new event group management

oops, forgot to add that this patchset is based on another
one I sent just recently..

http://marc.info/?l=linux-kernel&m=133357111816870&w=2

jirka


On Wed, Apr 04, 2012 at 11:16:08PM +0200, Jiri Olsa wrote:
> hi,
> adding support for creating event groups based on the way they
> are specified on the command line. 
> 
> - added 'group=...' syntax to group events (patches 1-5).
>   I think this part is quite ready.
> 
> - added 'group:1=...' syntax to specify which event to sample (leader)
>   and use  PERF_SAMPLE_READ and PERF_FORMAT_GROUP to read all siblings
>   on every leader's events (patches 6-8).
>   Currently it is only possible to display siblings values by
>   'perf report -D' PERF_SAMPLE_READ dump output containing only perf
>   internal IDs displayed.. so not very usefull. But I was hoping to
>   straighten up the data design/directions before I touch the gui.
> 
> 
> Attached patches:
>  1/8 perf, tool: Add support to parse event group syntax
>  2/8 perf, tool: Enable grouping logic for parsed events
>  3/8 perf: Add PERF_EVENT_IOC_ID ioctl to return event ID
>  4/8 perf, tool: Use PERF_EVENT_IOC_ID perf ioctl to read event id
>  5/8 perf, tool: Separate 'mem:' event scanner bits
>  6/8 perf, tool: Add modifier support to group event syntax
>  7/8 perf, tool: Add support for parsing PERF_SAMPLE_READ
>  8/8 perf, tool: Enable sampling on specified event group leader
> 
> thanks for comments,
> jirka
> ---
>  include/linux/perf_event.h          |    1 +
>  kernel/events/core.c                |    9 +++
>  tools/perf/builtin-record.c         |   13 ++---
>  tools/perf/builtin-stat.c           |   13 ++---
>  tools/perf/builtin-test.c           |   12 ++--
>  tools/perf/builtin-top.c            |   12 +---
>  tools/perf/util/event.h             |   21 ++++++-
>  tools/perf/util/evlist.c            |  120 +++++++++++++++++++++++++++--------
>  tools/perf/util/evlist.h            |    8 ++-
>  tools/perf/util/evsel.c             |   94 +++++++++++++++++++++-------
>  tools/perf/util/evsel.h             |   16 ++---
>  tools/perf/util/parse-events-test.c |   93 ++++++++++++++++++++++++++-
>  tools/perf/util/parse-events.c      |    6 ++
>  tools/perf/util/parse-events.h      |    1 +
>  tools/perf/util/parse-events.l      |   39 +++++++++++-
>  tools/perf/util/parse-events.y      |   66 +++++++++++++++++---
>  tools/perf/util/python.c            |   10 ++-
>  tools/perf/util/session.c           |   42 ++++++++++++
>  tools/perf/util/session.h           |    5 +-
>  19 files changed, 476 insertions(+), 105 deletions(-)
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