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/* * 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> /* * clear_bit may not imply a memory barrier */ #ifndef smp_mb__before_clear_bit #define smp_mb__before_clear_bit() smp_mb() #define smp_mb__after_clear_bit() smp_mb() #endif #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 */