Commit 300b06d4 authored Dec 21, 2015 by Michael S. Tsirkin

x86: reuse asm-generic/barrier.h



As on most architectures, on x86 read_barrier_depends and
smp_read_barrier_depends are empty.  Drop the local definitions and pull
the generic ones from asm-generic/barrier.h instead: they are identical.

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>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>

parent 577f183a

arch/x86/include/asm/barrier.h

+2 −3

Original line number	Diff line number	Diff line
		@@ -43,9 +43,6 @@
		#define smp_store_mb(var, value) do { WRITE_ONCE(var, value); barrier(); } while (0)
		#endif /* SMP */

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

		#if defined(CONFIG_X86_PPRO_FENCE)

		/*
		@@ -91,4 +88,6 @@ do { \
		#define smp_mb__before_atomic() barrier()
		#define smp_mb__after_atomic() barrier()

		#include <asm-generic/barrier.h>

		#endif /* _ASM_X86_BARRIER_H */