Cleanup: move generic caa_get_cycles to arch/generic.h

[urcu.git] / urcu / arch / x86.h

diff --git a/urcu/arch/x86.h b/urcu/arch/x86.h
index ccc4ce8aab5235a9c6209867d3e99c15f62c1fc0..afbf4fad37b68b8cb18f2eccb15f8c308e1eb02d 100644 (file)
--- 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" {
@@ -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;                                       \
@@ -86,6 +89,20 @@ 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