[roll] Roll fuchsia [docs] Add doc describing kernel thread signaling
Add some internal kernel-developer-centric documentation for thread
signaling.
This doc was previously drafted+reviewed in Google Docs form.
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/581875
Original-Revision: ba4b58eae1744c1c5a3301d4789c38de9c79515f
GitOrigin-RevId: 19892a568f8544b73fde01cadec644912eb56ba6
Change-Id: I307d5dfd68d774780e388199e0650467a483c3f0
diff --git a/stem b/stem
index 3901b1e..4014173 100644
--- a/stem
+++ b/stem
@@ -10,7 +10,7 @@
githooks=""
remote="https://fuchsia.googlesource.com/fuchsia"
gerrithost="https://fuchsia-review.googlesource.com"
- revision="52a612e765e995497bc611da973b909f0bbca241"/>
+ revision="ba4b58eae1744c1c5a3301d4789c38de9c79515f"/>
</projects>
<hooks>
<hook name="install-environment"