Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#ifndef _ASM_LOCAL_H
2#define _ASM_LOCAL_H
3
4#include <linux/config.h>
5#include <linux/percpu.h>
6#include <asm/atomic.h>
7
8#ifdef CONFIG_32BIT
9
10typedef atomic_t local_t;
11
12#define LOCAL_INIT(i) ATOMIC_INIT(i)
13#define local_read(v) atomic_read(v)
14#define local_set(v,i) atomic_set(v,i)
15
16#define local_inc(v) atomic_inc(v)
17#define local_dec(v) atomic_dec(v)
18#define local_add(i, v) atomic_add(i, v)
19#define local_sub(i, v) atomic_sub(i, v)
20
21#endif
22
23#ifdef CONFIG_64BIT
24
25typedef atomic64_t local_t;
26
27#define LOCAL_INIT(i) ATOMIC64_INIT(i)
28#define local_read(v) atomic64_read(v)
29#define local_set(v,i) atomic64_set(v,i)
30
31#define local_inc(v) atomic64_inc(v)
32#define local_dec(v) atomic64_dec(v)
33#define local_add(i, v) atomic64_add(i, v)
34#define local_sub(i, v) atomic64_sub(i, v)
35
36#endif
37
38#define __local_inc(v) ((v)->counter++)
39#define __local_dec(v) ((v)->counter--)
40#define __local_add(i,v) ((v)->counter+=(i))
41#define __local_sub(i,v) ((v)->counter-=(i))
42
43/*
44 * Use these for per-cpu local_t variables: on some archs they are
45 * much more efficient than these naive implementations. Note they take
46 * a variable, not an address.
47 */
48#define cpu_local_read(v) local_read(&__get_cpu_var(v))
49#define cpu_local_set(v, i) local_set(&__get_cpu_var(v), (i))
50
51#define cpu_local_inc(v) local_inc(&__get_cpu_var(v))
52#define cpu_local_dec(v) local_dec(&__get_cpu_var(v))
53#define cpu_local_add(i, v) local_add((i), &__get_cpu_var(v))
54#define cpu_local_sub(i, v) local_sub((i), &__get_cpu_var(v))
55
56#define __cpu_local_inc(v) __local_inc(&__get_cpu_var(v))
57#define __cpu_local_dec(v) __local_dec(&__get_cpu_var(v))
58#define __cpu_local_add(i, v) __local_add((i), &__get_cpu_var(v))
59#define __cpu_local_sub(i, v) __local_sub((i), &__get_cpu_var(v))
60
61#endif /* _ASM_LOCAL_H */