Event lists rewritten to a single linked list

In multithreaded environment, we need to pass messages between workers.
This is done by queuing events to their respective queues. The
double-linked list is not really useful for that as it needs locking
everywhere.

This commit rewrites the event subsystem to use a single-linked list
where events are enqueued by a single atomic instruction and the queue
is processed after atomically moving the whole queue aside.

1 files changed, 0 insertions, 1 deletions

diff --git a/lib/locking.h b/lib/locking.h
index ab5c06af..8ea1c968 100644
--- a/lib/locking.h
+++ b/lib/locking.h
@@ -16,7 +16,6 @@ struct lock_order {
   struct domain_generic *the_bird;
   struct domain_generic *proto;
   struct domain_generic *rtable;
-  struct domain_generic *event;
 };
 
 extern _Thread_local struct lock_order locking_stack;