diff mbox series

[05/11] perf tools: Add API probes for new clock IDs

Message ID 20220209084929.54331-6-adrian.hunter@intel.com (mailing list archive)
State New, archived
Headers show
Series perf intel-pt: Add perf event clocks to better support VM tracing | expand

Commit Message

Adrian Hunter Feb. 9, 2022, 8:49 a.m. UTC 
Add ability to check whether the kernel supports new clock IDs
CLOCK_PERF_HW_CLOCK and CLOCK_PERF_HW_CLOCK_NS.
They will be used in a subsequent patch.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
---
 tools/perf/util/perf_api_probe.c | 22 ++++++++++++++++++++++
 tools/perf/util/perf_api_probe.h |  2 ++
 2 files changed, 24 insertions(+)
diff mbox series

Patch

diff --git a/tools/perf/util/perf_api_probe.c b/tools/perf/util/perf_api_probe.c
index c28dd50bd571..c70af544a08c 100644
--- a/tools/perf/util/perf_api_probe.c
+++ b/tools/perf/util/perf_api_probe.c
@@ -109,6 +109,18 @@  static void perf_probe_cgroup(struct evsel *evsel)
 	evsel->core.attr.cgroup = 1;
 }
 
+static void perf_probe_hw_clock(struct evsel *evsel)
+{
+	evsel->core.attr.use_clockid = 1;
+	evsel->core.attr.clockid = CLOCK_PERF_HW_CLOCK;
+}
+
+static void perf_probe_hw_clock_ns(struct evsel *evsel)
+{
+	evsel->core.attr.use_clockid = 1;
+	evsel->core.attr.clockid = CLOCK_PERF_HW_CLOCK_NS;
+}
+
 bool perf_can_sample_identifier(void)
 {
 	return perf_probe_api(perf_probe_sample_identifier);
@@ -195,3 +207,13 @@  bool perf_can_record_cgroup(void)
 {
 	return perf_probe_api(perf_probe_cgroup);
 }
+
+bool perf_can_perf_clock_hw_clock(void)
+{
+	return perf_probe_api(perf_probe_hw_clock);
+}
+
+bool perf_can_perf_clock_hw_clock_ns(void)
+{
+	return perf_probe_api(perf_probe_hw_clock_ns);
+}
diff --git a/tools/perf/util/perf_api_probe.h b/tools/perf/util/perf_api_probe.h
index b104168efb15..5b30cbd260cf 100644
--- a/tools/perf/util/perf_api_probe.h
+++ b/tools/perf/util/perf_api_probe.h
@@ -13,5 +13,7 @@  bool perf_can_record_text_poke_events(void);
 bool perf_can_sample_identifier(void);
 bool perf_can_record_build_id(void);
 bool perf_can_record_cgroup(void);
+bool perf_can_perf_clock_hw_clock(void);
+bool perf_can_perf_clock_hw_clock_ns(void);
 
 #endif // __PERF_API_PROBE_H