Merge "Add playbook semaphores"

1 files changed, 11 insertions, 0 deletions

diff --git a/releasenotes/notes/playbook-semaphore-0dc1ee618ef77678.yaml b/releasenotes/notes/playbook-semaphore-0dc1ee618ef77678.yaml
new file mode 100644
index 000000000..77515f3a0
--- /dev/null
+++ b/releasenotes/notes/playbook-semaphore-0dc1ee618ef77678.yaml
@@ -0,0 +1,11 @@
+---
+features:
+  - |
+    Individual playbooks may now be wrapped by a semaphore.  Zuul will
+    start the job and proceed up to the point of a playbook which
+    requires a semaphore and then wait until it is able to aquire the
+    semaphore before proceeding.  It releases the semaphore after the
+    end of that individual playbook.
+
+    The same semaphore may be used for both jobs and playbooks, but an
+    individual job may not use the same semaphore for both purposes.