tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1#ifndef __ASM_SH_ATOMIC_IRQ_H
2#define __ASM_SH_ATOMIC_IRQ_H
3
4/*
5 * To get proper branch prediction for the main line, we must branch
6 * forward to code at the end of this object's .text section, then
7 * branch back to restart the operation.
8 */
9static inline void atomic_add(int i, atomic_t *v)
10{
11 unsigned long flags;
12
13 raw_local_irq_save(flags);
14 v->counter += i;
15 raw_local_irq_restore(flags);
16}
17
18static inline void atomic_sub(int i, atomic_t *v)
19{
20 unsigned long flags;
21
22 raw_local_irq_save(flags);
23 v->counter -= i;
24 raw_local_irq_restore(flags);
25}
26
27static inline int atomic_add_return(int i, atomic_t *v)
28{
29 unsigned long temp, flags;
30
31 raw_local_irq_save(flags);
32 temp = v->counter;
33 temp += i;
34 v->counter = temp;
35 raw_local_irq_restore(flags);
36
37 return temp;
38}
39
40static inline int atomic_sub_return(int i, atomic_t *v)
41{
42 unsigned long temp, flags;
43
44 raw_local_irq_save(flags);
45 temp = v->counter;
46 temp -= i;
47 v->counter = temp;
48 raw_local_irq_restore(flags);
49
50 return temp;
51}
52
53static inline void atomic_clear_mask(unsigned int mask, atomic_t *v)
54{
55 unsigned long flags;
56
57 raw_local_irq_save(flags);
58 v->counter &= ~mask;
59 raw_local_irq_restore(flags);
60}
61
62static inline void atomic_set_mask(unsigned int mask, atomic_t *v)
63{
64 unsigned long flags;
65
66 raw_local_irq_save(flags);
67 v->counter |= mask;
68 raw_local_irq_restore(flags);
69}
70
71#endif /* __ASM_SH_ATOMIC_IRQ_H */