X-Git-Url: https://git.liburcu.org/?p=urcu.git;a=blobdiff_plain;f=urcu%2Farch%2Fx86.h;h=ecc4b2d39b4133cb026fbe98be6cace2c5c3e223;hp=ccc4ce8aab5235a9c6209867d3e99c15f62c1fc0;hb=999991c6e4600c410181baea65bda9f406464872;hpb=f541831e757bc5e0143550f5d686bed0de7d41b7;ds=sidebyside

diff --git a/urcu/arch/x86.h b/urcu/arch/x86.h
index ccc4ce8..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" {
@@ -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