simpleperf: skip checking tracepoint events in the list cmd

When running in emulator, accessing some tracepoint events
may cause warnings in the kernel.

Bug: 328598190
Test: run simpleperf_unit_test
Change-Id: Ia80fac978530fd9ecca2175c515d40c25257ee87

2 files changed, 3 insertions, 2 deletions

diff --git a/simpleperf/cmd_list.cpp b/simpleperf/cmd_list.cpp
index 963259d1..926b7f7e 100644
--- a/simpleperf/cmd_list.cpp
+++ b/simpleperf/cmd_list.cpp
@@ -246,8 +246,8 @@ static void PrintRawEventTypes(const std::string& type_desc) {
 }
 
 static bool IsEventTypeSupported(const EventType& event_type) {
-  // Because PMU events are provided by kernel, we assume it's supported.
-  if (event_type.IsPmuEvent()) {
+  // PMU and tracepoint events are provided by kernel. So we assume they're supported.
+  if (event_type.IsPmuEvent() || event_type.IsTracepointEvent()) {
     return true;
   }
   perf_event_attr attr = CreateDefaultPerfEventAttr(event_type);
diff --git a/simpleperf/event_type.h b/simpleperf/event_type.h
index 14863caa..d85f71d1 100644
--- a/simpleperf/event_type.h
+++ b/simpleperf/event_type.h
@@ -55,6 +55,7 @@ struct EventType {
   bool IsHardwareEvent() const {
     return type == PERF_TYPE_HARDWARE || type == PERF_TYPE_HW_CACHE || type == PERF_TYPE_RAW;
   }
+  bool IsTracepointEvent() const { return type == PERF_TYPE_TRACEPOINT; }
 
   std::vector<int> GetPmuCpumask();