1 #ifndef __SYSDEP_I386_BARRIER_H
2 #define __SYSDEP_I386_BARRIER_H
3 
4 /* Copied from include/asm-i386 for use by userspace.  i386 has the option
5  * of using mfence, but I'm just using this, which works everywhere, for now.
6  */
7 #define mb() asm volatile("lock; addl $0,0(%esp)")
8 
9 #endif
10