lkml.org 
[lkml]   [2014]   [Apr]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[tip:locking/core] arch,frv: Convert smp_mb__*()
Commit-ID:  d038c0e8380fa8cae049bee8d81a5672cd159013
Gitweb: http://git.kernel.org/tip/d038c0e8380fa8cae049bee8d81a5672cd159013
Author: Peter Zijlstra <peterz@infradead.org>
AuthorDate: Thu, 13 Mar 2014 19:00:37 +0100
Committer: Ingo Molnar <mingo@kernel.org>
CommitDate: Fri, 18 Apr 2014 14:20:34 +0200

arch,frv: Convert smp_mb__*()

Because:

arch/frv/include/asm/smp.h:#error SMP not supported

smp_mb() is barrier() and we can use the default implementation that
uses smp_mb().

Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/n/tip-n296g51yzdu5ru1vp7mccxmf@git.kernel.org
Cc: David Howells <dhowells@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
arch/frv/include/asm/atomic.h | 7 +------
arch/frv/include/asm/bitops.h | 6 ------
2 files changed, 1 insertion(+), 12 deletions(-)

diff --git a/arch/frv/include/asm/atomic.h b/arch/frv/include/asm/atomic.h
index b86329d..f6c3a16 100644
--- a/arch/frv/include/asm/atomic.h
+++ b/arch/frv/include/asm/atomic.h
@@ -17,6 +17,7 @@
#include <linux/types.h>
#include <asm/spr-regs.h>
#include <asm/cmpxchg.h>
+#include <asm/barrier.h>

#ifdef CONFIG_SMP
#error not SMP safe
@@ -29,12 +30,6 @@
* We do not have SMP systems, so we don't have to deal with that.
*/

-/* Atomic operations are already serializing */
-#define smp_mb__before_atomic_dec() barrier()
-#define smp_mb__after_atomic_dec() barrier()
-#define smp_mb__before_atomic_inc() barrier()
-#define smp_mb__after_atomic_inc() barrier()
-
#define ATOMIC_INIT(i) { (i) }
#define atomic_read(v) (*(volatile int *)&(v)->counter)
#define atomic_set(v, i) (((v)->counter) = (i))
diff --git a/arch/frv/include/asm/bitops.h b/arch/frv/include/asm/bitops.h
index 57bf85d..96de220 100644
--- a/arch/frv/include/asm/bitops.h
+++ b/arch/frv/include/asm/bitops.h
@@ -25,12 +25,6 @@

#include <asm-generic/bitops/ffz.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()
-
#ifndef CONFIG_FRV_OUTOFLINE_ATOMIC_OPS
static inline
unsigned long atomic_test_and_ANDNOT_mask(unsigned long mask, volatile unsigned long *v)

\
 
 \ /
  Last update: 2014-04-18 18:41    [W:0.306 / U:0.072 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site