[PATCH V13 00/14] perf, tools: Add support for PMU events in JSON format

Sukadev Bhattiprolu sukadev at linux.vnet.ibm.com
Wed Jun 3 03:12:00 AEST 2015

CPUs support a large number of performance monitoring events (PMU events)
and often these events are very specific to an architecture/model of the
CPU. To use most of these PMU events with perf, we currently have to identify
them by their raw codes:

	perf stat -e r100f2 sleep 1

This patchset allows architectures to specify these PMU events in JSON
files located in 'tools/perf/pmu-events/arch/' of the mainline tree.
The events from the JSON files for the architecture are then built into
the perf binary.

At run time, perf identifies the specific set of events for the CPU and
creates "event aliases". These aliases allow users to specify events by
"name" as:

	perf stat -e pm_1plus_ppc_cmpl sleep 1

The file, 'tools/perf/pmu-events/README' in [PATCH 14/14] gives more

	- All known events tables for the architecture are included in the
	  perf binary.

	- For architectures that don't have any JSON files, an empty mapping
	  table is created and they should continue to build)

Thanks to input from Andi Kleen, Jiri Olsa, Namhyung Kim and Ingo Molnar.

These patches are available from:

		Branch			Description
		json-v13		Source Code only 
		json-files-3		x86 and Powerpc datafiles only
		json-v13-with-data	Both code and data (build/test)
NOTE: 	Only "source code" patches (i.e those in json-v13) are being emailed.
	Please pull the "data files" from the json-files-3 branch.


	Version: Individual patches have their own history :-) that I am
	preserving. Patchset version (v13) is for overall patchset and is
	somewhat arbitrary.

	- Added support for "categories" of events to perf
	- Add mapfile, jevents build dependency on pmu-events.c
	- Silence jevents when parsing JSON files unless V=1 is specified
	- Cleanup error messages
	- Fix memory leak with ->cpuid
	- Rebase to Arnaldo's tree
	- Allow overriding CPUID via environment variable
	- Support long descriptions for events
	- Handle header line in mapfile.csv
	- Cleanup JSON files (trim PublicDescription if identical to/prefix of
	  BriefDescription field)

Andi Kleen (12):
  perf, tools: Add jsmn `jasmine' JSON parser
  perf, tools, jevents: Program to convert JSON file to C style file
  perf, tools: Allow events with dot
  perf, tools: Support CPU id matching for x86 v2
  perf, tools: Support alias descriptions
  perf, tools: Query terminal width and use in perf list
  perf, tools: Add a --no-desc flag to perf list
  perf, tools: Group alias perf list by section
  perf, tools: Add override support for event list CPUID
  perf, tools: Support long descriptions with perf list -v
  perf, tools: Add support for event list topics
  perf, tools: Handle header line in mapfile

Sukadev Bhattiprolu (1):
  perf, tools: Use pmu_events_map table to create event aliases

 tools/perf/Documentation/perf-list.txt |    8 +-
 tools/perf/Makefile.perf               |   25 +-
 tools/perf/arch/powerpc/util/header.c  |   11 +
 tools/perf/arch/x86/util/header.c      |   24 +-
 tools/perf/builtin-list.c              |   15 +-
 tools/perf/pmu-events/Build            |   11 +
 tools/perf/pmu-events/README           |   67 +++
 tools/perf/pmu-events/jevents.c        |  714 ++++++++++++++++++++++++++++++++
 tools/perf/pmu-events/jevents.h        |   18 +
 tools/perf/pmu-events/jsmn.c           |  313 ++++++++++++++
 tools/perf/pmu-events/jsmn.h           |   67 +++
 tools/perf/pmu-events/json.c           |  162 ++++++++
 tools/perf/pmu-events/json.h           |   39 ++
 tools/perf/pmu-events/pmu-events.h     |   37 ++
 tools/perf/util/cache.h                |    1 +
 tools/perf/util/header.h               |    3 +-
 tools/perf/util/pager.c                |   15 +
 tools/perf/util/parse-events.c         |    4 +-
 tools/perf/util/parse-events.h         |    2 +-
 tools/perf/util/parse-events.l         |    5 +-
 tools/perf/util/pmu.c                  |  230 ++++++++--
 tools/perf/util/pmu.h                  |    6 +-
 22 files changed, 1725 insertions(+), 52 deletions(-)
 create mode 100644 tools/perf/pmu-events/Build
 create mode 100644 tools/perf/pmu-events/README
 create mode 100644 tools/perf/pmu-events/jevents.c
 create mode 100644 tools/perf/pmu-events/jevents.h
 create mode 100644 tools/perf/pmu-events/jsmn.c
 create mode 100644 tools/perf/pmu-events/jsmn.h
 create mode 100644 tools/perf/pmu-events/json.c
 create mode 100644 tools/perf/pmu-events/json.h
 create mode 100644 tools/perf/pmu-events/pmu-events.h


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