linux

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James Clark 65319890c3 perf tools: Fix "kernel lock contention analysis" test by not printing warnings in quiet mode

Especially when CONFIG_LOCKDEP and other debug configs are enabled,
Perf can print the following warning when running the "kernel lock
contention analysis" test:

  Warning:
  Processed 1378918 events and lost 4 chunks!

  Check IO/CPU overload!

  Warning:
  Processed 4593325 samples and lost 70.00%!

The test already supplies -q to run in quiet mode, so extend quiet mode
to perf_stdio__warning() and also ui__warning() for consistency.

This fixes the following failure due to the extra lines counted:

  perf test "lock cont" -vvv

  82: kernel lock contention analysis test                            :
  --- start ---
  test child forked, pid 3125
  Testing perf lock record and perf lock contention
  [Fail] Recorded result count is not 1: 9
  test child finished with -1
  ---- end ----
  kernel lock contention analysis test: FAILED!

Fixes: ec685de25b6718f8 ("perf test: Add kernel lock contention test")
Signed-off-by: James Clark <james.clark@arm.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20221018094137.783081-2-james.clark@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

2022-10-27 16:37:26 -03:00

browsers

perf annotate: Remove unused struct disasm_line_samples

2022-10-06 08:03:51 -03:00

gtk

perf annotate: Re-add annotate_warned functionality

2021-08-03 17:04:04 -03:00

stdio

perf report: Print percentage of each event statistics

2021-04-29 10:30:59 -03:00

tui

perf ui: Update use of pthread mutex