barrier.h 281 B

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