[PATCH v4 0/6] Avoid parsing tracepoint format just for id

[Ian Rogers <irogers@google.com>]

The tracepoint format isn't needed to open an event, just the id for
the config value. Refactor the use of evsel->tp_format to use an
accessor that will lazily construct its value. In evsel__newtp_idx
read the id so the config value can be set up/used.

This allows tracepoints to be used without libtraceevent in a number
of tests. Other functionality is enabled without libtracevent, such as
mapping a tracepoint id back to its name. There may be some
performance benefit to code using tracepoints but not using the format
information.

v4. Rebase due to conflict with 9ac98662dbd3 ("perf: event: Remove deadcode")
v3. Whitespace changes, Arnaldo.
v2. Add additional error checking/handling in evsel__tp_format.

Ian Rogers (6):
  tool api fs: Correctly encode errno for read/write open failures
  perf trace-event: Constify print arguments
  perf trace-event: Always build trace-event-info.c
  perf evsel: Add/use accessor for tp_format
  perf evsel: Allow evsel__newtp without libtraceevent
  perf tests: Enable tests disabled due to tracepoint parsing

 tools/lib/api/fs/fs.c                         |   6 +-
 tools/perf/builtin-kmem.c                     |  12 +-
 tools/perf/builtin-kwork.c                    |   3 +-
 tools/perf/builtin-record.c                   |   2 -
 tools/perf/builtin-script.c                   |   9 +-
 tools/perf/builtin-trace.c                    |  79 +++++++++----
 tools/perf/tests/Build                        |   6 +-
 tools/perf/tests/builtin-test.c               |   2 -
 tools/perf/tests/parse-events.c               |  25 +---
 tools/perf/util/Build                         |   2 +-
 tools/perf/util/data-convert-bt.c             |  10 +-
 tools/perf/util/data-convert-json.c           |   8 +-
 tools/perf/util/evsel.c                       | 110 +++++++++++++-----
 tools/perf/util/evsel.h                       |   9 +-
 tools/perf/util/evsel_fprintf.c               |   4 +-
 tools/perf/util/parse-events.c                |  16 +--
 tools/perf/util/perf_event_attr_fprintf.c     |   4 -
 .../util/scripting-engines/trace-event-perl.c |   3 +-
 .../scripting-engines/trace-event-python.c    |   3 +-
 tools/perf/util/sort.c                        |  33 ++++--
 tools/perf/util/trace-event-parse.c           |   2 +-
 tools/perf/util/trace-event-scripting.c       |  10 +-
 tools/perf/util/trace-event.h                 |   2 +-
 23 files changed, 214 insertions(+), 146 deletions(-)

-- 
2.47.0.277.g8800431eea-goog