2 * Task I/O accounting operations
4 #ifndef __TASK_IO_ACCOUNTING_OPS_INCLUDED
5 #define __TASK_IO_ACCOUNTING_OPS_INCLUDED
7 #include <linux/sched.h>
9 #ifdef CONFIG_TASK_IO_ACCOUNTING
10 static inline void task_io_account_read(size_t bytes
)
12 current
->ioac
.read_bytes
+= bytes
;
16 * We approximate number of blocks, because we account bytes only.
17 * A 'block' is 512 bytes
19 static inline unsigned long task_io_get_inblock(const struct task_struct
*p
)
21 return p
->ioac
.read_bytes
>> 9;
24 static inline void task_io_account_write(size_t bytes
)
26 current
->ioac
.write_bytes
+= bytes
;
30 * We approximate number of blocks, because we account bytes only.
31 * A 'block' is 512 bytes
33 static inline unsigned long task_io_get_oublock(const struct task_struct
*p
)
35 return p
->ioac
.write_bytes
>> 9;
38 static inline void task_io_account_cancelled_write(size_t bytes
)
40 current
->ioac
.cancelled_write_bytes
+= bytes
;
43 static inline void task_io_accounting_init(struct task_io_accounting
*ioac
)
45 memset(ioac
, 0, sizeof(*ioac
));
48 static inline void task_blk_io_accounting_add(struct task_io_accounting
*dst
,
49 struct task_io_accounting
*src
)
51 dst
->read_bytes
+= src
->read_bytes
;
52 dst
->write_bytes
+= src
->write_bytes
;
53 dst
->cancelled_write_bytes
+= src
->cancelled_write_bytes
;
58 static inline void task_io_account_read(size_t bytes
)
62 static inline unsigned long task_io_get_inblock(const struct task_struct
*p
)
67 static inline void task_io_account_write(size_t bytes
)
71 static inline unsigned long task_io_get_oublock(const struct task_struct
*p
)
76 static inline void task_io_account_cancelled_write(size_t bytes
)
80 static inline void task_io_accounting_init(struct task_io_accounting
*ioac
)
84 static inline void task_blk_io_accounting_add(struct task_io_accounting
*dst
,
85 struct task_io_accounting
*src
)
89 #endif /* CONFIG_TASK_IO_ACCOUNTING */
91 #ifdef CONFIG_TASK_XACCT
92 static inline void task_chr_io_accounting_add(struct task_io_accounting
*dst
,
93 struct task_io_accounting
*src
)
95 dst
->rchar
+= src
->rchar
;
96 dst
->wchar
+= src
->wchar
;
97 dst
->syscr
+= src
->syscr
;
98 dst
->syscw
+= src
->syscw
;
101 static inline void task_chr_io_accounting_add(struct task_io_accounting
*dst
,
102 struct task_io_accounting
*src
)
105 #endif /* CONFIG_TASK_XACCT */
107 static inline void task_io_accounting_add(struct task_io_accounting
*dst
,
108 struct task_io_accounting
*src
)
110 task_chr_io_accounting_add(dst
, src
);
111 task_blk_io_accounting_add(dst
, src
);
113 #endif /* __TASK_IO_ACCOUNTING_OPS_INCLUDED */
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