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perf test: Add verbose skip output for bpf counters 

Provide additional context for when the stat bpf counters test skips.

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: bpf@vger.kernel.org
Link: http://lore.kernel.org/lkml/20210617184216.2075588-3-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Ian Rogers 2021-06-17 11:42:15 -07:00 committed by Arnaldo Carvalho de Melo
parent 4bcbe438b3
commit 2638fbd351
1 changed files with 7 additions and 1 deletions
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8
tools/perf/tests/shell/stat_bpf_counters.sh
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@ -22,7 +22,13 @@ compare_number()
}
# skip if --bpf-counters is not supported
perf stat --bpf-counters true > /dev/null 2>&1 || exit 2
if ! perf stat --bpf-counters true > /dev/null 2>&1; then
if [ "$1" == "-v" ]; then
echo "Skipping: --bpf-counters not supported"
perf --no-pager stat --bpf-counters true || true
fi
exit 2
fi
base_cycles=$(perf stat --no-big-num -e cycles -- perf bench sched messaging -g 1 -l 100 -t 2>&1 | awk '/cycles/ {print $1}')
bpf_cycles=$(perf stat --no-big-num --bpf-counters -e cycles -- perf bench sched messaging -g 1 -l 100 -t 2>&1 | awk '/cycles/ {print $1}')