From 8e4bff4cab0ddac6060645b0715210484d02ff40 Mon Sep 17 00:00:00 2001 From: Yuval Adam <_@yuv.al> Date: Wed, 30 Aug 2017 08:25:59 +0000 Subject: Initial file dump from open source release --- arch/sh/include/asm/atomic-irq.h | 73 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 73 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 00000000..9f7c5660 --- /dev/null +++ b/arch/sh/include/asm/atomic-irq.h @@ -0,0 +1,73 @@ +#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. + */ +static inline void atomic_add(int i, atomic_t *v) +{ + unsigned long flags; + + raw_local_irq_save(flags); + v->counter += i; + raw_local_irq_restore(flags); +} + +static inline void atomic_sub(int i, atomic_t *v) +{ + unsigned long flags; + + raw_local_irq_save(flags); + v->counter -= i; + raw_local_irq_restore(flags); +} + +static inline int atomic_add_return(int i, atomic_t *v) +{ + unsigned long temp, flags; + + raw_local_irq_save(flags); + temp = v->counter; + temp += i; + v->counter = temp; + raw_local_irq_restore(flags); + + return temp; +} + +static inline int atomic_sub_return(int i, atomic_t *v) +{ + unsigned long temp, flags; + + raw_local_irq_save(flags); + temp = v->counter; + temp -= i; + v->counter = temp; + raw_local_irq_restore(flags); + + return temp; +} + +static inline void atomic_clear_mask(unsigned int mask, atomic_t *v) +{ + unsigned long flags; + + raw_local_irq_save(flags); + v->counter &= ~mask; + raw_local_irq_restore(flags); +} + +static inline void atomic_set_mask(unsigned int mask, atomic_t *v) +{ + unsigned long flags; + + raw_local_irq_save(flags); + v->counter |= mask; + raw_local_irq_restore(flags); +} + +#endif /* __ASM_SH_ATOMIC_IRQ_H */ -- cgit v1.3.1