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Subject[PATCH 0/4] perf events: Add realtime clock event and timehist option -v2
Date
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 (4):
perf events: Introduce realtime clock event
perf events: plumbing for PERF_SAMPLE_READ and read_format
perf events: add timehist option to record and report
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 | 4 +
tools/perf/Documentation/perf-report.txt | 6 +
tools/perf/builtin-record.c | 113 ++++++++++++++++-
tools/perf/builtin-report.c | 208 +++++++++++++++++++++++++++++-
tools/perf/builtin-stat.c | 5 +-
tools/perf/builtin-test.c | 3 +-
tools/perf/util/event.c | 1 +
tools/perf/util/event.h | 18 +++-
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 | 16 +++
tools/perf/util/session.h | 9 +-
19 files changed, 507 insertions(+), 15 deletions(-)

--
1.7.3.4



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