* [PATCH 13/34] x86/um: reuse asm-generic/barrier.h
[not found] <1451473761-30019-1-git-send-email-mst@redhat.com>
@ 2015-12-30 13:25 ` Michael S. Tsirkin
0 siblings, 0 replies; only message in thread
From: Michael S. Tsirkin @ 2015-12-30 13:25 UTC (permalink / raw)
To: linux-kernel
Cc: Peter Zijlstra, Arnd Bergmann, linux-arch, Andrew Cooper,
virtualization, Stefano Stabellini, Jeff Dike, Richard Weinberger,
Thomas Gleixner, Ingo Molnar, H. Peter Anvin, x86,
Borislav Petkov, Andy Lutomirski, user-mode-linux-devel,
user-mode-linux-user
On x86/um CONFIG_SMP is never defined. As a result, several macros
match the asm-generic variant 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>
---
arch/x86/um/asm/barrier.h | 9 +--------
1 file changed, 1 insertion(+), 8 deletions(-)
diff --git a/arch/x86/um/asm/barrier.h b/arch/x86/um/asm/barrier.h
index 755481f..174781a 100644
--- a/arch/x86/um/asm/barrier.h
+++ b/arch/x86/um/asm/barrier.h
@@ -36,13 +36,6 @@
#endif /* CONFIG_X86_PPRO_FENCE */
#define dma_wmb() barrier()
-#define smp_mb() barrier()
-#define smp_rmb() barrier()
-#define smp_wmb() barrier()
-
-#define smp_store_mb(var, value) do { WRITE_ONCE(var, value); barrier(); } while (0)
-
-#define read_barrier_depends() do { } while (0)
-#define smp_read_barrier_depends() do { } while (0)
+#include <asm-generic/barrier.h>
#endif
--
MST
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2015-12-30 13:25 ` [PATCH 13/34] x86/um: reuse asm-generic/barrier.h Michael S. Tsirkin
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