commit c00f73b940d7d8cc8af6c61b47d02619bcd7b4bd
author Etienne Pierre-doray <etiennep@chromium.org> Thu Jul 10 15:47:16 2025
committer WebRTC LUCI CQ <webrtc-scoped@luci-project-accounts.iam.gserviceaccount.com> Mon Jul 14 21:36:37 2025
tree 8fcf50165c0a86375262e43863feaebb47064ead
parent e578d783beef3947698594a3f150ce841690b67a

[tracing] Add slow tag explicitly to disabled by default trace categories

This CL explicitly adds "slow" tag to disabled by default categories.
Perfetto already does this implicitly, which I plan on removing in
favor of explicit tags.
Note that perfetto no longer adds the tag if already present:
https://github.com/google/perfetto/pull/2060

Bug: b/413057996
Change-Id: I656030c5725d06e3b704ed6364894ca2284180aa
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/399940
Reviewed-by: Evan Shrubsole <eshr@webrtc.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Commit-Queue: Etienne Pierre-Doray <etiennep@chromium.org>
Cr-Commit-Position: refs/heads/main@{#45144}

rtc_base/trace_categories.h

diff --git a/rtc_base/trace_categories.h b/rtc_base/trace_categories.h
index ef4070c..e6b3ab5 100644
--- a/rtc_base/trace_categories.h
+++ b/rtc_base/trace_categories.h
@@ -27,8 +27,9 @@
     RTC_EXPORT,
     perfetto::Category("webrtc"),
     perfetto::Category("webrtc_stats"),
-    perfetto::Category(TRACE_DISABLED_BY_DEFAULT("webrtc")),
-    perfetto::Category(TRACE_DISABLED_BY_DEFAULT("webrtc_stats")));
+    perfetto::Category(TRACE_DISABLED_BY_DEFAULT("webrtc")).SetTags("slow"),
+    perfetto::Category(TRACE_DISABLED_BY_DEFAULT("webrtc_stats"))
+        .SetTags("slow"));
 
 PERFETTO_USE_CATEGORIES_FROM_NAMESPACE(webrtc);