Add rewrite of rep_nop

Rewritten from scratch, OK for LGPL license.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>

diff --git a/arch_x86.h b/arch_x86.h
index 9e0079d6a5a7fc8fee6e81e0ea26d80995446450..4a2573e0f52934e3a2635516ad5f66cfd7c5c563 100644 (file)
--- a/arch_x86.h
+++ b/arch_x86.h
@@ -84,6 +84,11 @@
 /* Nop everywhere except on alpha. */
 #define smp_read_barrier_depends()
 
+static inline void rep_nop(void)
+{
+       asm volatile("rep; nop" : : : "memory");
+}
+
 static inline void cpu_relax(void)
 {
        rep_nop();