[PATCH v2 3/5] perf test: Ensure sample_period is set libpfm4 events

Ian Rogers
2020-07-28T08:57:47Z

Test that a command line option doesn't override the period set on a
libpfm4 event.
Without libpfm4 test passes as unsupported.

Signed-off-by: Ian Rogers <irogers@google.com>
---
tools/perf/tests/attr/README | 1 +
tools/perf/tests/attr/test-record-pfm-period | 9 +++++++++
2 files changed, 10 insertions(+)
create mode 100644 tools/perf/tests/attr/test-record-pfm-period

diff --git a/tools/perf/tests/attr/README b/tools/perf/tests/attr/README
index 430024f618f1..6cd408108595 100644
--- a/tools/perf/tests/attr/README
+++ b/tools/perf/tests/attr/README
@@ -53,6 +53,7 @@ Following tests are defined (with perf commands):
perf record -i kill (test-record-no-inherit)
perf record -n kill (test-record-no-samples)
perf record -c 100 -P kill (test-record-period)
+ perf record -c 1 --pfm-events=cycles:period=2 (test-record-pfm-period)
perf record -R kill (test-record-raw)
perf stat -e cycles kill (test-stat-basic)
perf stat kill (test-stat-default)
diff --git a/tools/perf/tests/attr/test-record-pfm-period b/tools/perf/tests/attr/test-record-pfm-period
new file mode 100644
index 000000000000..368f5b814094
--- /dev/null
+++ b/tools/perf/tests/attr/test-record-pfm-period
@@ -0,0 +1,9 @@
+[config]
+command = record
+args = --no-bpf-event -c 10000 --pfm-events=cycles:period=77777 kill >/dev/null 2>&1
+ret = 1
+
+[event:base-record]
+sample_period=77777
+sample_type=7
+freq=0
--
2.28.0.163.g6104cc2f0b6-goog