1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Task I/O accounting operations
5 #ifndef __TASK_IO_ACCOUNTING_OPS_INCLUDED
6 #define __TASK_IO_ACCOUNTING_OPS_INCLUDED
8 #include <linux/sched.h>
10 #ifdef CONFIG_TASK_IO_ACCOUNTING
11 static inline void task_io_account_read(size_t bytes
)
13 current
->ioac
.read_bytes
+= bytes
;
17 * We approximate number of blocks, because we account bytes only.
18 * A 'block' is 512 bytes
20 static inline unsigned long task_io_get_inblock(const struct task_struct
*p
)
22 return p
->ioac
.read_bytes
>> 9;
25 static inline void task_io_account_write(size_t bytes
)
27 current
->ioac
.write_bytes
+= bytes
;
31 * We approximate number of blocks, because we account bytes only.
32 * A 'block' is 512 bytes
34 static inline unsigned long task_io_get_oublock(const struct task_struct
*p
)
36 return p
->ioac
.write_bytes
>> 9;
39 static inline void task_io_account_cancelled_write(size_t bytes
)
41 current
->ioac
.cancelled_write_bytes
+= bytes
;
44 static inline void task_io_accounting_init(struct task_io_accounting
*ioac
)
46 memset(ioac
, 0, sizeof(*ioac
));
49 static inline void task_blk_io_accounting_add(struct task_io_accounting
*dst
,
50 struct task_io_accounting
*src
)
52 dst
->read_bytes
+= src
->read_bytes
;
53 dst
->write_bytes
+= src
->write_bytes
;
54 dst
->cancelled_write_bytes
+= src
->cancelled_write_bytes
;
59 static inline void task_io_account_read(size_t bytes
)
63 static inline unsigned long task_io_get_inblock(const struct task_struct
*p
)
68 static inline void task_io_account_write(size_t bytes
)
72 static inline unsigned long task_io_get_oublock(const struct task_struct
*p
)
77 static inline void task_io_account_cancelled_write(size_t bytes
)
81 static inline void task_io_accounting_init(struct task_io_accounting
*ioac
)
85 static inline void task_blk_io_accounting_add(struct task_io_accounting
*dst
,
86 struct task_io_accounting
*src
)
90 #endif /* CONFIG_TASK_IO_ACCOUNTING */
92 #ifdef CONFIG_TASK_XACCT
93 static inline void task_chr_io_accounting_add(struct task_io_accounting
*dst
,
94 struct task_io_accounting
*src
)
96 dst
->rchar
+= src
->rchar
;
97 dst
->wchar
+= src
->wchar
;
98 dst
->syscr
+= src
->syscr
;
99 dst
->syscw
+= src
->syscw
;
102 static inline void task_chr_io_accounting_add(struct task_io_accounting
*dst
,
103 struct task_io_accounting
*src
)
106 #endif /* CONFIG_TASK_XACCT */
108 static inline void task_io_accounting_add(struct task_io_accounting
*dst
,
109 struct task_io_accounting
*src
)
111 task_chr_io_accounting_add(dst
, src
);
112 task_blk_io_accounting_add(dst
, src
);
114 #endif /* __TASK_IO_ACCOUNTING_OPS_INCLUDED */