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7c3ab738 AM |
1 | /* |
2 | * Task I/O accounting operations | |
3 | */ | |
4 | #ifndef __TASK_IO_ACCOUNTING_OPS_INCLUDED | |
5 | #define __TASK_IO_ACCOUNTING_OPS_INCLUDED | |
6 | ||
7 | #ifdef CONFIG_TASK_IO_ACCOUNTING | |
8 | static inline void task_io_account_read(size_t bytes) | |
9 | { | |
10 | current->ioac.read_bytes += bytes; | |
11 | } | |
12 | ||
6eaeeaba ED |
13 | /* |
14 | * We approximate number of blocks, because we account bytes only. | |
15 | * A 'block' is 512 bytes | |
16 | */ | |
17 | static inline unsigned long task_io_get_inblock(const struct task_struct *p) | |
18 | { | |
19 | return p->ioac.read_bytes >> 9; | |
20 | } | |
21 | ||
7c3ab738 AM |
22 | static inline void task_io_account_write(size_t bytes) |
23 | { | |
24 | current->ioac.write_bytes += bytes; | |
25 | } | |
26 | ||
6eaeeaba ED |
27 | /* |
28 | * We approximate number of blocks, because we account bytes only. | |
29 | * A 'block' is 512 bytes | |
30 | */ | |
31 | static inline unsigned long task_io_get_oublock(const struct task_struct *p) | |
32 | { | |
33 | return p->ioac.write_bytes >> 9; | |
34 | } | |
35 | ||
7c3ab738 AM |
36 | static inline void task_io_account_cancelled_write(size_t bytes) |
37 | { | |
38 | current->ioac.cancelled_write_bytes += bytes; | |
39 | } | |
40 | ||
41 | static inline void task_io_accounting_init(struct task_struct *tsk) | |
42 | { | |
43 | memset(&tsk->ioac, 0, sizeof(tsk->ioac)); | |
44 | } | |
45 | ||
46 | #else | |
47 | ||
48 | static inline void task_io_account_read(size_t bytes) | |
49 | { | |
50 | } | |
51 | ||
6eaeeaba ED |
52 | static inline unsigned long task_io_get_inblock(const struct task_struct *p) |
53 | { | |
54 | return 0; | |
55 | } | |
56 | ||
7c3ab738 AM |
57 | static inline void task_io_account_write(size_t bytes) |
58 | { | |
59 | } | |
60 | ||
6eaeeaba ED |
61 | static inline unsigned long task_io_get_oublock(const struct task_struct *p) |
62 | { | |
63 | return 0; | |
64 | } | |
65 | ||
7c3ab738 AM |
66 | static inline void task_io_account_cancelled_write(size_t bytes) |
67 | { | |
68 | } | |
69 | ||
70 | static inline void task_io_accounting_init(struct task_struct *tsk) | |
71 | { | |
72 | } | |
73 | ||
74 | #endif /* CONFIG_TASK_IO_ACCOUNTING */ | |
75 | #endif /* __TASK_IO_ACCOUNTING_OPS_INCLUDED */ |