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 3/3] perf test: Make stat bpf counters test more robust
Date: Mon, 21 Jun 2021 14:56:48 -0700 [thread overview]
Message-ID: <20210621215648.2991319-3-irogers@google.com> (raw)
In-Reply-To: <20210621215648.2991319-1-irogers@google.com>
If the test is run on a hypervisor then the cycles event may not be
counted, skip the test in this situation. Fail the test if cycles are
not counted in the subsequent bpf counter run.
Signed-off-by: Ian Rogers <irogers@google.com>
---
tools/perf/tests/shell/stat_bpf_counters.sh | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/tools/perf/tests/shell/stat_bpf_counters.sh b/tools/perf/tests/shell/stat_bpf_counters.sh
index 85eb689fe202..6b156dd85469 100755
--- a/tools/perf/tests/shell/stat_bpf_counters.sh
+++ b/tools/perf/tests/shell/stat_bpf_counters.sh
@@ -31,7 +31,15 @@ if ! perf stat --bpf-counters true > /dev/null 2>&1; then
fi
base_cycles=$(perf stat --no-big-num -e cycles -- perf bench sched messaging -g 1 -l 100 -t 2>&1 | awk '/cycles/ {print $1}')
+if [ "$base_cycles" == "<not" ]; then
+ echo "Skipping: cycles event not counted"
+ exit 2
+fi
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 $1}')
+if [ "$bpf_cycles" == "<not" ]; then
+ echo "Failed: cycles not counted with --bpf-counters"
+ exit 1
+fi
compare_number $base_cycles $bpf_cycles
exit 0
--
2.32.0.288.g62a8d224e6-goog
next prev parent reply other threads:[~2021-06-21 21:57 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-21 21:56 [PATCH v2 1/3] perf test: Pass the verbose option to shell tests Ian Rogers
2021-06-21 21:56 ` [PATCH v2 2/3] perf test: Add verbose skip output for bpf counters Ian Rogers
2021-06-22 18:05 ` Arnaldo Carvalho de Melo
2021-06-21 21:56 ` Ian Rogers [this message]
2021-06-22 18:05 ` [PATCH v2 3/3] perf test: Make stat bpf counters test more robust Arnaldo Carvalho de Melo
2021-06-22 17:45 ` [PATCH v2 1/3] perf test: Pass the verbose option to shell tests Arnaldo Carvalho de Melo
2021-06-22 17:53 ` Arnaldo Carvalho de Melo
2021-06-22 18:17 ` Ian Rogers
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