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[v2,12/32] x86/um: reuse asm-generic/barrier.h

Message ID 1451572003-2440-13-git-send-email-mst@redhat.com (mailing list archive)
State New, archived
Headers show

Commit Message

Michael S. Tsirkin Dec. 31, 2015, 7:07 p.m. UTC 
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>
Acked-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/x86/um/asm/barrier.h | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

Comments

Richard Weinberger Jan. 5, 2016, 11:12 p.m. UTC | #1 
Am 31.12.2015 um 20:07 schrieb Michael S. Tsirkin:
> 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>
> Acked-by: Arnd Bergmann <arnd@arndb.de>

Acked-by: Richard Weinberger <richard@nod.at>

Thanks,
//richard
diff mbox

Patch

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