summaryrefslogtreecommitdiff
path: root/arch/m68k/include/asm/barrier.h
blob: 445ce22c23cb0528bf2855c36502b1c3bedecd7f (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
#ifndef _M68K_BARRIER_H
#define _M68K_BARRIER_H

/*
 * Force strict CPU ordering.
 * Not really required on m68k...
 */
#define nop()		do { asm volatile ("nop"); barrier(); } while (0)
#define mb()		barrier()
#define rmb()		barrier()
#define wmb()		barrier()
#define read_barrier_depends()	((void)0)
#define set_mb(var, value)	({ (var) = (value); wmb(); })

#define smp_mb()	barrier()
#define smp_rmb()	barrier()
#define smp_wmb()	barrier()
#define smp_read_barrier_depends()	((void)0)

#endif /* _M68K_BARRIER_H */