X-Git-Url: https://git.liburcu.org/?p=urcu.git;a=blobdiff_plain;f=urcu%2Farch%2Fx86.h;h=a5b3a23b385f26f7aea6b5daaf70cab762fc4262;hp=ccc4ce8aab5235a9c6209867d3e99c15f62c1fc0;hb=67ecffc0f530a7b5c4dd5111ea7dd3213da8eb91;hpb=2c81778bd92008e5c79173788738f1800cd42e8b

diff --git a/urcu/arch/x86.h b/urcu/arch/x86.h
index ccc4ce8..a5b3a23 100644
--- a/urcu/arch/x86.h
+++ b/urcu/arch/x86.h
@@ -24,10 +24,11 @@
 
 #include <urcu/compiler.h>
 #include <urcu/config.h>
+#include <urcu/syscall-compat.h>
 
 #ifdef __cplusplus
 extern "C" {
-#endif 
+#endif
 
 #define CAA_CACHE_LINE_SIZE	128
 
@@ -68,6 +69,8 @@ extern "C" {
 
 #define caa_cpu_relax()	__asm__ __volatile__ ("rep; nop" : : : "memory")
 
+#define HAS_CAA_GET_CYCLES
+
 #define rdtscll(val)							  \
 	do {						  		  \
 	     unsigned int __a, __d;					  \
@@ -86,7 +89,21 @@ static inline cycles_t caa_get_cycles(void)
         return ret;
 }
 
-#ifdef __cplusplus 
+/*
+ * Define the membarrier system call number if not yet available in the
+ * system headers.
+ */
+#if (CAA_BITS_PER_LONG == 32)
+#ifndef __NR_membarrier
+#define __NR_membarrier		375
+#endif
+#else
+#ifndef __NR_membarrier
+#define __NR_membarrier		324
+#endif
+#endif
+
+#ifdef __cplusplus
 }
 #endif