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usr
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src
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linux-headers-6.8.0-83
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arch
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sh
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include
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asm
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atomic-irq.h
/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __ASM_SH_ATOMIC_IRQ_H #define __ASM_SH_ATOMIC_IRQ_H #include <linux/irqflags.h> /* * To get proper branch prediction for the main line, we must branch * forward to code at the end of this object's .text section, then * branch back to restart the operation. */ #define ATOMIC_OP(op, c_op) \ static inline void arch_atomic_##op(int i, atomic_t *v) \ { \ unsigned long flags; \ \ raw_local_irq_save(flags); \ v->counter c_op i; \ raw_local_irq_restore(flags); \ } #define ATOMIC_OP_RETURN(op, c_op) \ static inline int arch_atomic_##op##_return(int i, atomic_t *v) \ { \ unsigned long temp, flags; \ \ raw_local_irq_save(flags); \ temp = v->counter; \ temp c_op i; \ v->counter = temp; \ raw_local_irq_restore(flags); \ \ return temp; \ } #define ATOMIC_FETCH_OP(op, c_op) \ static inline int arch_atomic_fetch_##op(int i, atomic_t *v) \ { \ unsigned long temp, flags; \ \ raw_local_irq_save(flags); \ temp = v->counter; \ v->counter c_op i; \ raw_local_irq_restore(flags); \ \ return temp; \ } #define ATOMIC_OPS(op, c_op) \ ATOMIC_OP(op, c_op) \ ATOMIC_OP_RETURN(op, c_op) \ ATOMIC_FETCH_OP(op, c_op) ATOMIC_OPS(add, +=) ATOMIC_OPS(sub, -=) #define arch_atomic_add_return arch_atomic_add_return #define arch_atomic_sub_return arch_atomic_sub_return #define arch_atomic_fetch_add arch_atomic_fetch_add #define arch_atomic_fetch_sub arch_atomic_fetch_sub #undef ATOMIC_OPS #define ATOMIC_OPS(op, c_op) \ ATOMIC_OP(op, c_op) \ ATOMIC_FETCH_OP(op, c_op) ATOMIC_OPS(and, &=) ATOMIC_OPS(or, |=) ATOMIC_OPS(xor, ^=) #define arch_atomic_fetch_and arch_atomic_fetch_and #define arch_atomic_fetch_or arch_atomic_fetch_or #define arch_atomic_fetch_xor arch_atomic_fetch_xor #undef ATOMIC_OPS #undef ATOMIC_FETCH_OP #undef ATOMIC_OP_RETURN #undef ATOMIC_OP #endif /* __ASM_SH_ATOMIC_IRQ_H */
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