From: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Date: Mon, 19 Oct 2009 23:39:15 +0000 (-0400)
Subject: uatomic: update atomic set/read, use STORE_SHARED/LOAD_SHARED
X-Git-Tag: v0.2.4~2
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=b46b23cb9949c585ddf8ccb691458c8c7c60c7ad;p=userspace-rcu.git

uatomic: update atomic set/read, use STORE_SHARED/LOAD_SHARED

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
---

diff --git a/urcu/uatomic_arch_ppc.h b/urcu/uatomic_arch_ppc.h
index 68b5faa..08a622d 100644
--- a/urcu/uatomic_arch_ppc.h
+++ b/urcu/uatomic_arch_ppc.h
@@ -21,6 +21,7 @@
  */
 
 #include <urcu/compiler.h>
+#include <urcu/system.h>
 
 #ifndef __SIZEOF_LONG__
 #ifdef __powerpc64__
@@ -36,12 +37,8 @@
 
 #define ILLEGAL_INSTR	".long	0xd00d00"
 
-#define uatomic_set(addr, v)				\
-do {							\
-	ACCESS_ONCE(*(addr)) = (v);			\
-} while (0)
-
-#define uatomic_read(addr)	ACCESS_ONCE(*(addr))
+#define uatomic_set(addr, v)	STORE_SHARED(*(addr), (v))
+#define uatomic_read(addr)	LOAD_SHARED(*(addr))
 
 /*
  * Using a isync as second barrier for exchange to provide acquire semantic.
diff --git a/urcu/uatomic_arch_s390.h b/urcu/uatomic_arch_s390.h
index b37e5f0..db05b15 100644
--- a/urcu/uatomic_arch_s390.h
+++ b/urcu/uatomic_arch_s390.h
@@ -28,6 +28,9 @@
  * IN THE SOFTWARE.
  */
 
+#include <urcu/compiler.h>
+#include <urcu/system.h>
+
 #ifndef __SIZEOF_LONG__
 #ifdef __s390x__
 #define __SIZEOF_LONG__ 8
@@ -40,12 +43,8 @@
 #define BITS_PER_LONG	(__SIZEOF_LONG__ * 8)
 #endif
 
-#define uatomic_set(addr, v)				\
-do {							\
-	ACCESS_ONCE(*(addr)) = (v);			\
-} while (0)
-
-#define uatomic_read(addr)	ACCESS_ONCE(*(addr))
+#define uatomic_set(addr, v)	STORE_SHARED(*(addr), (v))
+#define uatomic_read(addr)	LOAD_SHARED(*(addr))
 
 static inline __attribute__((always_inline))
 unsigned int uatomic_exchange_32(volatile unsigned int *addr, unsigned int val)