[PATCH v2 2/3] perf test: Add verbose skip output for bpf counters

From: Ian Rogers <irogers@google.com>
To: Peter Zijlstra <peterz@infradead.org>,
	Ingo Molnar <mingo@redhat.com>,
	Arnaldo Carvalho de Melo <acme@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Jiri Olsa <jolsa@redhat.com>, Namhyung Kim <namhyung@kernel.org>,
	Song Liu <songliubraving@fb.com>,
	linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org,
	bpf@vger.kernel.org
Cc: Ian Rogers <irogers@google.com>
Subject: [PATCH v2 2/3] perf test: Add verbose skip output for bpf counters
Date: Mon, 21 Jun 2021 14:56:47 -0700	[thread overview]
Message-ID: <20210621215648.2991319-2-irogers@google.com> (raw)
In-Reply-To: <20210621215648.2991319-1-irogers@google.com>

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

Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/tests/shell/stat_bpf_counters.sh | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/tools/perf/tests/shell/stat_bpf_counters.sh b/tools/perf/tests/shell/stat_bpf_counters.sh
index 22eb31e48ca7..85eb689fe202 100755
--- a/tools/perf/tests/shell/stat_bpf_counters.sh
+++ b/tools/perf/tests/shell/stat_bpf_counters.sh
@@ -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}')
-- 
2.32.0.288.g62a8d224e6-goog

