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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>
59 lines
1.9 KiB
C
59 lines
1.9 KiB
C
/*
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* Copyright (C) 2012 ARM Ltd.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __ASM_BITOPS_H
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#define __ASM_BITOPS_H
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#include <linux/compiler.h>
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#include <asm/barrier.h>
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#ifndef _LINUX_BITOPS_H
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#error only <linux/bitops.h> can be included directly
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#endif
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/*
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* Little endian assembly atomic bitops.
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*/
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extern void set_bit(int nr, volatile unsigned long *p);
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extern void clear_bit(int nr, volatile unsigned long *p);
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extern void change_bit(int nr, volatile unsigned long *p);
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extern int test_and_set_bit(int nr, volatile unsigned long *p);
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extern int test_and_clear_bit(int nr, volatile unsigned long *p);
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extern int test_and_change_bit(int nr, volatile unsigned long *p);
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#include <asm-generic/bitops/builtin-__ffs.h>
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#include <asm-generic/bitops/builtin-ffs.h>
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#include <asm-generic/bitops/builtin-__fls.h>
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#include <asm-generic/bitops/builtin-fls.h>
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#include <asm-generic/bitops/ffz.h>
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#include <asm-generic/bitops/fls64.h>
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#include <asm-generic/bitops/find.h>
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#include <asm-generic/bitops/sched.h>
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#include <asm-generic/bitops/hweight.h>
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#include <asm-generic/bitops/lock.h>
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#include <asm-generic/bitops/non-atomic.h>
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#include <asm-generic/bitops/le.h>
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/*
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* Ext2 is defined to use little-endian byte ordering.
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*/
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#define ext2_set_bit_atomic(lock, nr, p) test_and_set_bit_le(nr, p)
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#define ext2_clear_bit_atomic(lock, nr, p) test_and_clear_bit_le(nr, p)
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#endif /* __ASM_BITOPS_H */
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