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From: Andriy Gapon <avg@FreeBSD.org>
Date: Wed, 18 May 2011 15:09:49 +0000 (UTC)
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Subject: svn commit: r222061 - user/avg/xcpu/sys/kern
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Author: avg
Date: Wed May 18 15:09:48 2011
New Revision: 222061
URL: http://svn.freebsd.org/changeset/base/222061

Log:
  smp rendezvous: remove unneeded memory barriers

Modified:
  user/avg/xcpu/sys/kern/subr_smp.c

Modified: user/avg/xcpu/sys/kern/subr_smp.c
==============================================================================
--- user/avg/xcpu/sys/kern/subr_smp.c	Wed May 18 15:08:30 2011	(r222060)
+++ user/avg/xcpu/sys/kern/subr_smp.c	Wed May 18 15:09:48 2011	(r222061)
@@ -473,7 +473,7 @@ smp_rendezvous_wait(volatile struct smp_
 
 	ncpus = rv->smp_rv_ncpus;
 
-	while (atomic_load_acq_int(&rv->smp_rv_waiters) < ncpus) {
+	while (rv->smp_rv_waiters < ncpus) {
 		/* check for incoming events */
 		if ((stopping_cpus & (1 << curcpu)) != 0)
 			cpustop_handler();
@@ -549,7 +549,7 @@ smp_rendezvous_cpus_oneaction(cpumask_t 
 	}
 
 	rv->smp_rv_action_func = action_func;
-	atomic_store_rel_int(&rv->smp_rv_waiters, 0);
+	rv->smp_rv_waiters = 0;
 
 	tmp = map;
 	while (tmp != 0) {