From: "Michael S. Tsirkin" <mst@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: Peter Zijlstra <peterz@infradead.org>,
Arnd Bergmann <arnd@arndb.de>,
linux-arch@vger.kernel.org,
Andrew Cooper <andrew.cooper3@citrix.com>,
virtualization@lists.linux-foundation.org,
Stefano Stabellini <stefano.stabellini@eu.citrix.com>,
Jeff Dike <jdike@addtoit.com>,
Richard Weinberger <richard@nod.at>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
x86@kernel.org, Borislav Petkov <bp@suse.de>,
Andy Lutomirski <luto@kernel.org>,
user-mode-linux-devel@lists.sourceforge.net,
user-mode-linux-user@lists.sourceforge.net
Subject: [PATCH 13/34] x86/um: reuse asm-generic/barrier.h
Date: Wed, 30 Dec 2015 15:25:09 +0200 [thread overview]
Message-ID: <1451473761-30019-14-git-send-email-mst@redhat.com> (raw)
In-Reply-To: <1451473761-30019-1-git-send-email-mst@redhat.com>
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
parent reply other threads:[~2015-12-30 13:25 UTC|newest]
Thread overview: expand[flat|nested] mbox.gz Atom feed
[parent not found: <1451473761-30019-1-git-send-email-mst@redhat.com>]
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