8715466b60
AARGH64 uses ll/sc primitives that do not imply any barriers for the
normal atomics, therefore smp_mb__{before,after} should be a full
barrier.
Since AARGH64 doesn't use asm-generic/barrier.h, add the required
definitions to its asm/barrier.h.
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-8p5iclqgy78al33kck3ht7nr@git.kernel.org
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chen Gang <gang.chen@asianux.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Will Deacon <will.deacon@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
58 lines
1.9 KiB
C
58 lines
1.9 KiB
C
/*
|
|
* Copyright (C) 2012 ARM Ltd.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#ifndef __ASM_BITOPS_H
|
|
#define __ASM_BITOPS_H
|
|
|
|
#include <linux/compiler.h>
|
|
#include <asm/barrier.h>
|
|
|
|
#ifndef _LINUX_BITOPS_H
|
|
#error only <linux/bitops.h> can be included directly
|
|
#endif
|
|
|
|
/*
|
|
* Little endian assembly atomic bitops.
|
|
*/
|
|
extern void set_bit(int nr, volatile unsigned long *p);
|
|
extern void clear_bit(int nr, volatile unsigned long *p);
|
|
extern void change_bit(int nr, volatile unsigned long *p);
|
|
extern int test_and_set_bit(int nr, volatile unsigned long *p);
|
|
extern int test_and_clear_bit(int nr, volatile unsigned long *p);
|
|
extern int test_and_change_bit(int nr, volatile unsigned long *p);
|
|
|
|
#include <asm-generic/bitops/builtin-__ffs.h>
|
|
#include <asm-generic/bitops/builtin-ffs.h>
|
|
#include <asm-generic/bitops/builtin-__fls.h>
|
|
#include <asm-generic/bitops/builtin-fls.h>
|
|
|
|
#include <asm-generic/bitops/ffz.h>
|
|
#include <asm-generic/bitops/fls64.h>
|
|
#include <asm-generic/bitops/find.h>
|
|
|
|
#include <asm-generic/bitops/sched.h>
|
|
#include <asm-generic/bitops/hweight.h>
|
|
#include <asm-generic/bitops/lock.h>
|
|
|
|
#include <asm-generic/bitops/non-atomic.h>
|
|
#include <asm-generic/bitops/le.h>
|
|
|
|
/*
|
|
* Ext2 is defined to use little-endian byte ordering.
|
|
*/
|
|
#define ext2_set_bit_atomic(lock, nr, p) test_and_set_bit_le(nr, p)
|
|
#define ext2_clear_bit_atomic(lock, nr, p) test_and_clear_bit_le(nr, p)
|
|
|
|
#endif /* __ASM_BITOPS_H */
|