add missing doc (#28534)

3 years ago · 44763b471f
parent 2bdd5bd8e6
commit 44763b471f
1 changed files with 2 additions and 0 deletions
--- a/doc/environment_variables.md
+++ b/doc/environment_variables.md
@ -51,6 +51,8 @@ some configuration as environment variables that can be set.
    resolver's resolved address sorter
  - cds_lb - traces cds LB policy
  - channel - traces operations on the C core channel stack
+  - channel_stack - traces the set of filters in a channel stack upon
+    construction
  - client_channel_call - traces client channel call batch activity
  - client_channel_routing - traces client channel call routing, including
    resolver and load balancing policy interaction