[PATCH 0/6 v3] perf events: Add realtime clock event, time-of-day strings to script output

[David Ahern <daahern@cisco.com>]

v2 -> v3:
- changed timehist arg in perf-record to tod to better reflect usage
- removed timehist changes from perf-report
- added dumping software events to perf-script
- added time-of-day output to perf-script

v1 -> v2:
- removed change to WARN_ON_ONCE in perf_event.c
- fixed init of realtime_clock event (needed call to perf_swevent_init_hrtimer)
- changed userspace event name to clock-realtime with the alias clkr as the 
  raw events code sucks up all options that start with 'r' followed by a hex
  character
- remove RAW sample hack for pushing realtime clock event data to userspace
- plumbed PERF_SAMPLE_READ to enable retrieving event data during sample
  generation
- add patch to perf-stat to recognize realtime-clock as a nsec counter
- implementation of tiemhist in perf-record was revamped significantly
  -- to use event data,
  -- to better handle fallback to synthesized event,
  -- added feature to force a sample to be generated at startup (to output
     wall-clock times we need a sample immediately; after that realtime-clock
     samples are generated periodically)
  -- change counter creation to be done only on first cpu; we do not need a
     counter for each cpu 

A request was made to modify perf-trace and perf-script. From what I can see
perf-trace does not exist yet and perf-script requires raw data which means
it does not work for the primary use case that motivated this feature
(perf record -e cs -1 -ag).


CC: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
CC: Ingo Molnar <mingo@elte.hu>
CC: Peter Zijlstra <peterz@infradead.org>
CC: Frederic Weisbecker <fweisbec@gmail.com>
CC: Paul Mackerras <paulus@samba.org>
CC: Thomas Gleixner <tglx@linutronix.de>

David Ahern (6):
  perf events: Introduce realtime clock event
  perf events: plumbing for PERF_SAMPLE_READ and read_format
  perf record: add time-of-day option
  perf script: dump software events too
  perf script: Prepend lines with time-of-day string
  perf stat: treat realtime-clock as nsec counter

 include/linux/perf_event.h               |    2 +
 kernel/perf_event.c                      |   85 ++++++++++++++++++++++
 tools/perf/Documentation/perf-record.txt |    5 ++
 tools/perf/builtin-record.c              |  115 +++++++++++++++++++++++++++++-
 tools/perf/builtin-script.c              |   89 ++++++++++++++++++++++--
 tools/perf/builtin-stat.c                |    5 +-
 tools/perf/builtin-test.c                |    3 +-
 tools/perf/util/event.c                  |   96 +++++++++++++++++++++++++
 tools/perf/util/event.h                  |   28 +++++++-
 tools/perf/util/evlist.c                 |    2 +-
 tools/perf/util/evlist.h                 |    2 +
 tools/perf/util/evsel.c                  |   24 ++++++-
 tools/perf/util/header.c                 |   18 +++++
 tools/perf/util/header.h                 |    1 +
 tools/perf/util/parse-events.c           |    2 +
 tools/perf/util/python.c                 |    3 +-
 tools/perf/util/session.c                |  114 +++++++++++++++++++++++++++++
 tools/perf/util/session.h                |   12 +++-
 18 files changed, 588 insertions(+), 18 deletions(-)

-- 
1.7.4