perf shell completion: Restrict completion of events to events

'perf list' will list libpfm4 events and metrics which aren't valid
options to the '-e' option. Restrict the events gathered so that invalid
ones aren't shown.

Before:

  $ perf stat -e <tab><tab>
  Display all 633 possibilities? (y or n)

After:

  $ perf stat -e <tab><tab>
  Display all 375 possibilities? (y or n)

Committer testing:

  # grep -m1 'model name' /proc/cpuinfo
  model name	: AMD Ryzen 9 5950X 16-Core Processor
  #

Before:

  # . tools/perf/perf-completion.sh
  # perf stat -e
  Display all 2672 possibilities? (y or n)

After:

  # . tools/perf/perf-completion.sh
  # perf stat -e
  Display all 2648 possibilities? (y or n)

Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: https://lore.kernel.org/r/20230905181554.3202873-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/perf-completion.sh b/tools/perf/perf-completion.sh
index 978249d7868c22e875720e73550eaf0897999c64..40cfc30ad7ad83af095426848f6c1a4d7ace929c 100644 (file)
--- a/tools/perf/perf-completion.sh
+++ b/tools/perf/perf-completion.sh
@@ -164,7 +164,7 @@ __perf_main ()
                $prev_skip_opts == @(record|stat|top) ]]; then
 
                local cur1=${COMP_WORDS[COMP_CWORD]}
-               local raw_evts=$($cmd list --raw-dump)
+               local raw_evts=$($cmd list --raw-dump hw sw cache tracepoint pmu sdt)
                local arr s tmp result cpu_evts
 
                # aarch64 doesn't have /sys/bus/event_source/devices/cpu/events