Signed-off-by: Wolfgang Mauerer <wolfgang.maue...@siemens.com>
Signed-off-by: Jan Kiszka <jan.kis...@siemens.com>
---
include/asm-x86/atomic.h | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/include/asm-x86/atomic.h b/include/asm-x86/atomic.h
index bb3ce46..16bc990 100644
--- a/include/asm-x86/atomic.h
+++ b/include/asm-x86/atomic.h
@@ -71,6 +71,11 @@ typedef struct { unsigned long counter; } xnarch_atomic_t;
#define xnarch_write_memory_barrier() xnarch_memory_barrier()
+static inline void cpu_relax(void)
+{
+ asm volatile("rep; nop" ::: "memory");
+}
+
#ifdef __i386__
struct __xeno_xchg_dummy { unsigned long a[100]; };
--
1.6.4
_______________________________________________
Xenomai-core mailing list
Xenomai-core@gna.org
https://mail.gna.org/listinfo/xenomai-core
