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arch
sh
include
asm
atomic-irq.h
Go to the documentation of this file.
1
#ifndef __ASM_SH_ATOMIC_IRQ_H
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#define __ASM_SH_ATOMIC_IRQ_H
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#include <
linux/irqflags.h
>
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/*
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* To get proper branch prediction for the main line, we must branch
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* forward to code at the end of this object's .text section, then
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* branch back to restart the operation.
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*/
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static
inline
void
atomic_add
(
int
i
,
atomic_t
*
v
)
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{
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unsigned
long
flags
;
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raw_local_irq_save
(flags);
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v->
counter
+=
i
;
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raw_local_irq_restore
(flags);
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}
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static
inline
void
atomic_sub
(
int
i
,
atomic_t
*
v
)
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{
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unsigned
long
flags
;
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raw_local_irq_save
(flags);
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v->
counter
-=
i
;
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raw_local_irq_restore
(flags);
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}
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static
inline
int
atomic_add_return
(
int
i
,
atomic_t
*
v
)
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{
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unsigned
long
temp
,
flags
;
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raw_local_irq_save
(flags);
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temp = v->
counter
;
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temp +=
i
;
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v->
counter
=
temp
;
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raw_local_irq_restore
(flags);
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return
temp
;
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}
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static
inline
int
atomic_sub_return
(
int
i
,
atomic_t
*
v
)
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{
44
unsigned
long
temp
,
flags
;
45
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raw_local_irq_save
(flags);
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temp = v->
counter
;
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temp -=
i
;
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v->
counter
=
temp
;
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raw_local_irq_restore
(flags);
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return
temp
;
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}
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static
inline
void
atomic_clear_mask
(
unsigned
int
mask
,
atomic_t
*
v
)
56
{
57
unsigned
long
flags
;
58
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raw_local_irq_save
(flags);
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v->
counter
&= ~mask;
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raw_local_irq_restore
(flags);
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}
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static
inline
void
atomic_set_mask
(
unsigned
int
mask
,
atomic_t
*
v
)
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{
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unsigned
long
flags
;
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raw_local_irq_save
(flags);
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v->
counter
|=
mask
;
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raw_local_irq_restore
(flags);
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}
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#endif
/* __ASM_SH_ATOMIC_IRQ_H */
Generated on Thu Jan 10 2013 13:17:12 for Linux Kernel by
1.8.2