Module Name: src
Committed By: skrll
Date: Sat Nov 8 17:18:54 UTC 2014
Modified Files:
src/sys/arch/arm/include: mutex.h
Log Message:
Clarify/merge two comments
To generate a diff of this commit:
cvs rdiff -u -r1.18 -r1.19 src/sys/arch/arm/include/mutex.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/arm/include/mutex.h
diff -u src/sys/arch/arm/include/mutex.h:1.18 src/sys/arch/arm/include/mutex.h:1.19
--- src/sys/arch/arm/include/mutex.h:1.18 Sun Oct 12 06:00:14 2014
+++ src/sys/arch/arm/include/mutex.h Sat Nov 8 17:18:54 2014
@@ -1,4 +1,4 @@
-/* $NetBSD: mutex.h,v 1.18 2014/10/12 06:00:14 skrll Exp $ */
+/* $NetBSD: mutex.h,v 1.19 2014/11/08 17:18:54 skrll Exp $ */
/*-
* Copyright (c) 2002, 2007 The NetBSD Foundation, Inc.
@@ -85,8 +85,8 @@ struct kmutex {
#define __HAVE_SIMPLE_MUTEXES 1
/*
- * MUTEX_RECEIVE: no memory barrier required; we're synchronizing against
- * interrupts, not multiple processors.
+ * MUTEX_{GIVE,RECEIVE}: no memory barrier is required in the UP case;
+ * we're synchronizing against interrupts, not multiple processors.
*/
#ifdef MULTIPROCESSOR
#ifdef _ARM_ARCH_7
@@ -98,9 +98,6 @@ struct kmutex {
#define MUTEX_RECEIVE(mtx) /* nothing */
#endif
-/*
- * MUTEX_GIVE: no memory barrier required; same reason.
- */
#ifdef MULTIPROCESSOR
#ifdef _ARM_ARCH_7
#define MUTEX_GIVE(mtx) __asm __volatile("dsb")
