From: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Date: Wed, 13 May 2009 17:40:26 +0000 (-0400)
Subject: Add rewrite of rep_nop
X-Git-Tag: v0.1~227
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=92d1c6565b8cd5c385853a6e1b4ca54184d9d4ac;p=userspace-rcu.git

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 9e0079d..4a2573e 100644
--- 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();