In situations like the perf data converter the evsel__name will be
used to create babeltrace events. If the events have the same name
then creation can fail. Avoid these failures by including more
information into the unknown event names.

Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/util/evsel.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 5a294595a677..51c871e7fbac 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -926,7 +926,8 @@ const char *evsel__name(struct evsel *evsel)
 		break;
 
 	case PERF_TYPE_TRACEPOINT:
-		scnprintf(bf, sizeof(bf), "%s", "unknown tracepoint");
+		scnprintf(bf, sizeof(bf), "unknown tracepoint id=%#"PRId64,
+			  evsel->core.attr.config);
 		break;
 
 	case PERF_TYPE_BREAKPOINT:
@@ -938,8 +939,8 @@ const char *evsel__name(struct evsel *evsel)
 		break;
 
 	default:
-		scnprintf(bf, sizeof(bf), "unknown attr type: %d",
-			  evsel->core.attr.type);
+		scnprintf(bf, sizeof(bf), "unknown event PMU=%d config=%#"PRIx64,
+			  evsel->core.attr.type, evsel->core.attr.config);
 		break;
 	}
 
-- 
2.53.0.1118.gaef5881109-goog