From: William Tu <u9012063@gmail.com>
Date: Mon, 26 Aug 2019 23:00:31 +0000 (-0700)
Subject: ovs-thread: Make struct spin lock cache aligned.
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=ae36d63d7e3c9363e626c86e859ad6e2e2074b58;p=mirror_ovs.git

ovs-thread: Make struct spin lock cache aligned.

Make the spin lock struct 64-byte aligned to avoid false sharing issue.

Signed-off-by: William Tu <u9012063@gmail.com>
Signed-off-by: Ben Pfaff <blp@ovn.org>
---

diff --git a/include/openvswitch/thread.h b/include/openvswitch/thread.h
index acc822904..5053cb309 100644
--- a/include/openvswitch/thread.h
+++ b/include/openvswitch/thread.h
@@ -34,7 +34,7 @@ struct OVS_LOCKABLE ovs_mutex {
 };
 
 #ifdef HAVE_PTHREAD_SPIN_LOCK
-struct OVS_LOCKABLE ovs_spin {
+OVS_ALIGNED_STRUCT(64, OVS_LOCKABLE ovs_spin) {
     pthread_spinlock_t lock;
     const char *where;          /* NULL if and only if uninitialized. */
 };