From 867b1822f30a76cb9c8342da29eb28ed75908fa9 Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Fri, 10 Oct 2014 18:17:09 -0400 Subject: add explicit barrier operation to internal atomic.h API --- arch/x86_64/atomic.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'arch/x86_64/atomic.h') diff --git a/arch/x86_64/atomic.h b/arch/x86_64/atomic.h index ae0a576c..333098c3 100644 --- a/arch/x86_64/atomic.h +++ b/arch/x86_64/atomic.h @@ -91,6 +91,11 @@ static inline void a_spin() __asm__ __volatile__( "pause" : : : "memory" ); } +static inline void a_barrier() +{ + __asm__ __volatile__( "" : : : "memory" ); +} + static inline void a_crash() { __asm__ __volatile__( "hlt" : : : "memory" ); -- cgit v1.2.1