forked from Minki/linux
a5401ee3da
Disintegrate asm/system.h for H8300. Signed-off-by: David Howells <dhowells@redhat.com> cc: Yoshinori Sato <ysato@users.sourceforge.jp>
28 lines
694 B
C
28 lines
694 B
C
#ifndef _H8300_BARRIER_H
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#define _H8300_BARRIER_H
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#define nop() asm volatile ("nop"::)
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/*
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* Force strict CPU ordering.
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* Not really required on H8...
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*/
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#define mb() asm volatile ("" : : :"memory")
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#define rmb() asm volatile ("" : : :"memory")
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#define wmb() asm volatile ("" : : :"memory")
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#define set_mb(var, value) do { xchg(&var, value); } while (0)
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#ifdef CONFIG_SMP
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#define smp_mb() mb()
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#define smp_rmb() rmb()
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#define smp_wmb() wmb()
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#define smp_read_barrier_depends() read_barrier_depends()
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#else
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#define smp_mb() barrier()
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#define smp_rmb() barrier()
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#define smp_wmb() barrier()
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#define smp_read_barrier_depends() do { } while(0)
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#endif
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#endif /* _H8300_BARRIER_H */
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