X-Git-Url: https://git.liburcu.org/?a=blobdiff_plain;ds=sidebyside;f=urcu%2Farch%2Fx86.h;h=ecc4b2d39b4133cb026fbe98be6cace2c5c3e223;hb=c23069c6cf733ed8a39e64300c264285f658ae23;hp=7af1ca524e091fb9f9aaa8b6c2d1d102d3abe270;hpb=b33e85a89e3fab8e58c8932d3d22e802de8d3ab2;p=urcu.git

diff --git a/urcu/arch/x86.h b/urcu/arch/x86.h
index 7af1ca5..ecc4b2d 100644
--- a/urcu/arch/x86.h
+++ b/urcu/arch/x86.h
@@ -24,6 +24,7 @@
 
 #include <urcu/compiler.h>
 #include <urcu/config.h>
+#include <urcu/syscall-compat.h>
 
 #ifdef __cplusplus
 extern "C" {
@@ -66,7 +67,7 @@ extern "C" {
 #endif
 #endif
 
-#define caa_cpu_relax()	__asm__ __volatile__ ("rep; nop" : : : "memory");
+#define caa_cpu_relax()	__asm__ __volatile__ ("rep; nop" : : : "memory")
 
 #define rdtscll(val)							  \
 	do {						  		  \
@@ -86,6 +87,20 @@ static inline cycles_t caa_get_cycles(void)
         return ret;
 }
 
+/*
+ * 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