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author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
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committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /arch/sh/include/asm/atomic-irq.h | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'arch/sh/include/asm/atomic-irq.h')
-rw-r--r-- | arch/sh/include/asm/atomic-irq.h | 73 |
1 files changed, 73 insertions, 0 deletions
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 <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. + */ +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 */ |