From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- arch/sh/include/asm/atomic-irq.h | 81 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 81 insertions(+) create mode 100644 arch/sh/include/asm/atomic-irq.h (limited to 'arch/sh/include/asm/atomic-irq.h') diff --git a/arch/sh/include/asm/atomic-irq.h b/arch/sh/include/asm/atomic-irq.h new file mode 100644 index 0000000000..b4090cc354 --- /dev/null +++ b/arch/sh/include/asm/atomic-irq.h @@ -0,0 +1,81 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __ASM_SH_ATOMIC_IRQ_H +#define __ASM_SH_ATOMIC_IRQ_H + +#include + +/* + * 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 */ -- cgit v1.2.3