linux-kernel - [tip:locking/core] arch,c6x: Convert smp_mb_

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Message-ID: <tip-kl53k3pyj0rbd80jq8ralpf3@git.kernel.org>
Date:	Fri, 18 Apr 2014 06:05:53 -0700
From:	tip-bot for Peter Zijlstra <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...nel.org,
	torvalds@...ux-foundation.org, peterz@...radead.org,
	msalter@...hat.com, paulmck@...ux.vnet.ibm.com, a-jacquiot@...com,
	tglx@...utronix.de
Subject: [tip:locking/core] arch,c6x: Convert smp_mb__*()

Commit-ID:  a8ec1516a74554992605f230859936d5d79c27ed
Gitweb:     http://git.kernel.org/tip/a8ec1516a74554992605f230859936d5d79c27ed
Author:     Peter Zijlstra <peterz@...radead.org>
AuthorDate: Thu, 13 Mar 2014 19:00:37 +0100
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Fri, 18 Apr 2014 11:40:34 +0200

arch,c6x: Convert smp_mb__*()

c6x doesn't have a barrier.h and completely relies on
asm-generic/barrier.h. Therefore its smp_mb() is barrier() and we can
use the default versions that are smp_mb().

Signed-off-by: Peter Zijlstra <peterz@...radead.org>
Acked-by: Mark Salter <msalter@...hat.com>
Acked-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
Link: http://lkml.kernel.org/n/tip-kl53k3pyj0rbd80jq8ralpf3@git.kernel.org
Cc: Aurelien Jacquiot <a-jacquiot@...com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Mark Salter <msalter@...hat.com>
Cc: linux-c6x-dev@...ux-c6x.org
Cc: linux-kernel@...r.kernel.org
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 arch/c6x/include/asm/bitops.h | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/arch/c6x/include/asm/bitops.h b/arch/c6x/include/asm/bitops.h
index 0bec7e5..f0ab012 100644
--- a/arch/c6x/include/asm/bitops.h
+++ b/arch/c6x/include/asm/bitops.h
@@ -14,14 +14,8 @@
 #ifdef __KERNEL__
 
 #include <linux/bitops.h>
-
 #include <asm/byteorder.h>
-
-/*
- * clear_bit() doesn't provide any barrier for the compiler.
- */
-#define smp_mb__before_clear_bit() barrier()
-#define smp_mb__after_clear_bit()  barrier()
+#include <asm/barrier.h>
 
 /*
  * We are lucky, DSP is perfect for bitops: do it in 3 cycles
--
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