From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Thu, 22 Sep 2011 15:00:14 +0000 (-0400)
Subject: powerpc: use __NO_LWSYNC__ check to use appropriate lwsync/sync opcode
X-Git-Tag: v0.6.5~10
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=e62b2f86c5ec06ed41d33ed578e66fad426ff215;p=userspace-rcu.git

powerpc: use __NO_LWSYNC__ check to use appropriate lwsync/sync opcode

We already used it in uatomic code, move it to arch ppc.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---

diff --git a/urcu/arch/ppc.h b/urcu/arch/ppc.h
index 048b217..2fcbf56 100644
--- a/urcu/arch/ppc.h
+++ b/urcu/arch/ppc.h
@@ -32,6 +32,12 @@ extern "C" {
 /* Include size of POWER5+ L3 cache lines: 256 bytes */
 #define CAA_CACHE_LINE_SIZE	256
 
+#ifdef __NO_LWSYNC__
+#define LWSYNC_OPCODE	"sync\n"
+#else
+#define LWSYNC_OPCODE	"lwsync\n"
+#endif
+
 /*
  * Use sync for all cmm_mb/rmb/wmb barriers because lwsync does not
  * preserve ordering of cacheable vs. non-cacheable accesses, so it
@@ -48,8 +54,8 @@ extern "C" {
  * Therefore, use it for barriers ordering accesses to cacheable memory
  * only.
  */
-#define cmm_smp_rmb()    asm volatile("lwsync":::"memory")
-#define cmm_smp_wmb()    asm volatile("lwsync":::"memory")
+#define cmm_smp_rmb()    asm volatile(LWSYNC_OPCODE:::"memory")
+#define cmm_smp_wmb()    asm volatile(LWSYNC_OPCODE:::"memory")
 
 #define mftbl()						\
 	({ 						\
diff --git a/urcu/uatomic/ppc.h b/urcu/uatomic/ppc.h
index 16dbd0c..3180750 100644
--- a/urcu/uatomic/ppc.h
+++ b/urcu/uatomic/ppc.h
@@ -27,12 +27,6 @@
 extern "C" {
 #endif 
 
-#ifdef __NO_LWSYNC__
-#define LWSYNC_OPCODE	"sync\n"
-#else
-#define LWSYNC_OPCODE	"lwsync\n"
-#endif
-
 #define ILLEGAL_INSTR	".long	0xd00d00"
 
 /*