kernel_optimize_test/arch/um/sys-i386/shared/sysdep/barrier.h
Al Viro aa7bd94249 x86, um: get rid of header symlinks
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-10-22 22:55:22 -07:00

10 lines
281 B
C

#ifndef __SYSDEP_I386_BARRIER_H
#define __SYSDEP_I386_BARRIER_H
/* Copied from include/asm-i386 for use by userspace. i386 has the option
* of using mfence, but I'm just using this, which works everywhere, for now.
*/
#define mb() asm volatile("lock; addl $0,0(%esp)")
#endif