Commit 90ff6a17 authored Dec 21, 2015 by Michael S. Tsirkin

arm64: reuse asm-generic/barrier.h



On arm64 nop, read_barrier_depends, smp_read_barrier_depends
smp_store_mb(), smp_mb__before_atomic and smp_mb__after_atomic match the
asm-generic variants exactly. Drop the local definitions and pull in
asm-generic/barrier.h instead.

This is in preparation to refactoring this code area.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>

parent 335390d6

arch/arm64/include/asm/barrier.h

+1 −8

Original line number	Diff line number	Diff line
		@@ -91,14 +91,7 @@ do { \
		__u.__val; \
		})

		#define read_barrier_depends() do { } while(0)
		#define smp_read_barrier_depends() do { } while(0)

		#define smp_store_mb(var, value) do { WRITE_ONCE(var, value); smp_mb(); } while (0)
		#define nop() asm volatile("nop");

		#define smp_mb__before_atomic() smp_mb()
		#define smp_mb__after_atomic() smp_mb()
		#include <asm-generic/barrier.h>

		#endif /* __ASSEMBLY__ */

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