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/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _ASM_GENERIC_BITOPS_ATOMIC_H_ #define _ASM_GENERIC_BITOPS_ATOMIC_H_ #include <linux/atomic.h> #include <linux/compiler.h> #include <asm/barrier.h> /* * Implementation of atomic bitops using atomic-fetch ops. * See Documentation/atomic_bitops.txt for details. */ static __always_inline void arch_set_bit(unsigned int nr, volatile unsigned long *p) { p += BIT_WORD(nr); raw_atomic_long_or(BIT_MASK(nr), (atomic_long_t *)p); } static __always_inline void arch_clear_bit(unsigned int nr, volatile unsigned long *p) { p += BIT_WORD(nr); raw_atomic_long_andnot(BIT_MASK(nr), (atomic_long_t *)p); } static __always_inline void arch_change_bit(unsigned int nr, volatile unsigned long *p) { p += BIT_WORD(nr); raw_atomic_long_xor(BIT_MASK(nr), (atomic_long_t *)p); } static __always_inline int arch_test_and_set_bit(unsigned int nr, volatile unsigned long *p) { long old; unsigned long mask = BIT_MASK(nr); p += BIT_WORD(nr); old = raw_atomic_long_fetch_or(mask, (atomic_long_t *)p); return !!(old & mask); } static __always_inline int arch_test_and_clear_bit(unsigned int nr, volatile unsigned long *p) { long old; unsigned long mask = BIT_MASK(nr); p += BIT_WORD(nr); old = raw_atomic_long_fetch_andnot(mask, (atomic_long_t *)p); return !!(old & mask); } static __always_inline int arch_test_and_change_bit(unsigned int nr, volatile unsigned long *p) { long old; unsigned long mask = BIT_MASK(nr); p += BIT_WORD(nr); old = raw_atomic_long_fetch_xor(mask, (atomic_long_t *)p); return !!(old & mask); } #include <asm-generic/bitops/instrumented-atomic.h> #endif /* _ASM_GENERIC_BITOPS_ATOMIC_H */