[PATCH V2 21/23] libperf evsel: Add comments for booleans

Adrian Hunter
2022-05-06T12:28:33Z

Add comments for 'system_wide' and 'requires_cpu' booleans

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
---
tools/lib/perf/include/internal/evsel.h | 9 +++++++++
1 file changed, 9 insertions(+)

diff --git a/tools/lib/perf/include/internal/evsel.h b/tools/lib/perf/include/internal/evsel.h
index 77fbb8b97e5c..cc8f1ba790bd 100644
--- a/tools/lib/perf/include/internal/evsel.h
+++ b/tools/lib/perf/include/internal/evsel.h
@@ -49,7 +49,16 @@ struct perf_evsel {

/* parse modifier helper */
int nr_members;
+ /*
+ * system_wide is for events that need to be on every CPU, irrespective
+ * of user requested CPUs or threads. Map propagation will not override
+ * this events own_cpus, which will contribute to evlist all_cpus.
+ */
bool system_wide;
+ /*
+ * Some events, for example uncore events, require a CPU.
+ * i.e. it cannot be the 'any CPU' value of -1.
+ */
bool requires_cpu;
int idx;
};
--
2.25.1