mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-05 08:26:49 +07:00
63f324cf07
barrier.h uses barrier() in non-SMP case. And doesn't include compiler.h. Cc: Al Viro <viro@ftp.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
37 lines
761 B
C
37 lines
761 B
C
#ifndef __BARRIER_H
|
|
#define __BARRIER_H
|
|
|
|
#include <asm/compiler.h>
|
|
|
|
#define mb() \
|
|
__asm__ __volatile__("mb": : :"memory")
|
|
|
|
#define rmb() \
|
|
__asm__ __volatile__("mb": : :"memory")
|
|
|
|
#define wmb() \
|
|
__asm__ __volatile__("wmb": : :"memory")
|
|
|
|
#define read_barrier_depends() \
|
|
__asm__ __volatile__("mb": : :"memory")
|
|
|
|
#ifdef CONFIG_SMP
|
|
#define smp_mb() mb()
|
|
#define smp_rmb() rmb()
|
|
#define smp_wmb() wmb()
|
|
#define smp_read_barrier_depends() read_barrier_depends()
|
|
#else
|
|
#define smp_mb() barrier()
|
|
#define smp_rmb() barrier()
|
|
#define smp_wmb() barrier()
|
|
#define smp_read_barrier_depends() barrier()
|
|
#endif
|
|
|
|
#define set_mb(var, value) \
|
|
do { var = value; mb(); } while (0)
|
|
|
|
#define set_wmb(var, value) \
|
|
do { var = value; wmb(); } while (0)
|
|
|
|
#endif /* __BARRIER_H */
|