From 7c80e5e06995bffd7ccce28bda173ee37d467cc1 Mon Sep 17 00:00:00 2001
From: Taylor R Campbell <riastradh@NetBSD.org>
Date: Thu, 31 Mar 2022 02:42:06 +0000
Subject: [PATCH 39/49] ucas(9): Convert membar_exit to membar_release.
---
sys/kern/subr_copy.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/sys/kern/subr_copy.c b/sys/kern/subr_copy.c
index 0ba7e40c54a2..a6604b81b7d1 100644
--- a/sys/kern/subr_copy.c
+++ b/sys/kern/subr_copy.c
@@ -412,7 +412,7 @@ ucas_critical_cpu_gate(void *arg __unused)
* the following atomic_dec_uint into a store-release.
*/
#ifndef __HAVE_ATOMIC_AS_MEMBAR
- membar_exit();
+ membar_release();
#endif
atomic_dec_uint(&ucas_critical_pausing_cpus);
@@ -449,7 +449,7 @@ ucas_critical_wait(void)
* happen before the ucas -- no buffered stores in other CPUs
* can clobber it later on, for instance.
*
- * Matches membar_exit/atomic_dec_uint (store-release) in
+ * Matches membar_release/atomic_dec_uint (store-release) in
* ucas_critical_cpu_gate.
*/
while (atomic_load_acquire(&ucas_critical_pausing_cpus) > 0) {