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s390: define __smp_xxx
This defines __smp_xxx barriers for s390, for use by virtualization. Some smp_xxx barriers are removed as they are defined correctly by asm-generic/barriers.h Note: smp_mb, smp_rmb and smp_wmb are defined as full barriers unconditionally on this architecture. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
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1 changed files with 8 additions and 5 deletions
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@ -26,18 +26,21 @@
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#define wmb() barrier()
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#define dma_rmb() mb()
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#define dma_wmb() mb()
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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_mb() mb()
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#define __smp_rmb() rmb()
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#define __smp_wmb() wmb()
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#define smp_mb() __smp_mb()
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#define smp_rmb() __smp_rmb()
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#define smp_wmb() __smp_wmb()
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#define smp_store_release(p, v) \
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#define __smp_store_release(p, v) \
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do { \
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compiletime_assert_atomic_type(*p); \
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barrier(); \
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WRITE_ONCE(*p, v); \
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} while (0)
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#define smp_load_acquire(p) \
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#define __smp_load_acquire(p) \
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({ \
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typeof(*p) ___p1 = READ_ONCE(*p); \
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compiletime_assert_atomic_type(*p); \
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