[PATCH 35/60] perf evsel: Add support for synthesized sample type

[Arnaldo Carvalho de Melo]

From: Adrian Hunter <adrian.hunter@xxxxxxxxx>

For reporting purposes, an evsel sample can have a callchain synthesized
from AUX area data. Add support for keeping track of synthesized sample
types. Note, the recorded sample_type cannot be changed because it is
needed to continue to parse events.

Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Link: http://lore.kernel.org/lkml/20200401101613.6201-11-adrian.hunter@xxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/util/evsel.h | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index 53187c501ee8..e64ed4202cab 100644
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -104,6 +104,14 @@ struct evsel {
 		perf_evsel__sb_cb_t	*cb;
 		void			*data;
 	} side_band;
+	/*
+	 * For reporting purposes, an evsel sample can have a callchain
+	 * synthesized from AUX area data. Keep track of synthesized sample
+	 * types here. Note, the recorded sample_type cannot be changed because
+	 * it is needed to continue to parse events.
+	 * See also evsel__has_callchain().
+	 */
+	__u64			synth_sample_type;
 };
 
 struct perf_missing_features {
@@ -398,7 +406,12 @@ static inline bool perf_evsel__has_branch_hw_idx(const struct evsel *evsel)
 
 static inline bool evsel__has_callchain(const struct evsel *evsel)
 {
-	return (evsel->core.attr.sample_type & PERF_SAMPLE_CALLCHAIN) != 0;
+	/*
+	 * For reporting purposes, an evsel sample can have a recorded callchain
+	 * or a callchain synthesized from AUX area data.
+	 */
+	return evsel->core.attr.sample_type & PERF_SAMPLE_CALLCHAIN ||
+	       evsel->synth_sample_type & PERF_SAMPLE_CALLCHAIN;
 }
 
 struct perf_env *perf_evsel__env(struct evsel *evsel);
-- 
2.21.1