[ci] limit cherry-pick workflow concurrency per PR

Signed-off-by: Gary Guo <[email protected]>
lowRISC · Nov 25, 2024 · 6e03389 · 6e03389
1 parent 7cf6843
commit 6e03389
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/.github/workflows/cherrypick.yml b/.github/workflows/cherrypick.yml
@@ -10,6 +10,12 @@ on:
 permissions:
   contents: read
 
+# 2 backport jobs may be running simultaneously if the merge and label event happen in quick
+# succession. Serialize them based on PR number to avoid this.
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number }}
+  cancel-in-progress: false
+
 jobs:
   cherrypick:
     # NOTE: We currently need these permissions because we create pull request with the repo-scoped