Contributors: 5
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Andrea Righi |
166 |
43.46% |
2 |
33.33% |
| Andrew Morton |
130 |
34.03% |
1 |
16.67% |
| Eric Dumazet |
82 |
21.47% |
1 |
16.67% |
| Alexey Dobriyan |
3 |
0.79% |
1 |
16.67% |
| Greg Kroah-Hartman |
1 |
0.26% |
1 |
16.67% |
| Total |
382 |
|
6 |
|
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Task I/O accounting operations
*/
#ifndef __TASK_IO_ACCOUNTING_OPS_INCLUDED
#define __TASK_IO_ACCOUNTING_OPS_INCLUDED
#include <linux/sched.h>
#ifdef CONFIG_TASK_IO_ACCOUNTING
static inline void task_io_account_read(size_t bytes)
{
current->ioac.read_bytes += bytes;
}
/*
* We approximate number of blocks, because we account bytes only.
* A 'block' is 512 bytes
*/
static inline unsigned long task_io_get_inblock(const struct task_struct *p)
{
return p->ioac.read_bytes >> 9;
}
static inline void task_io_account_write(size_t bytes)
{
current->ioac.write_bytes += bytes;
}
/*
* We approximate number of blocks, because we account bytes only.
* A 'block' is 512 bytes
*/
static inline unsigned long task_io_get_oublock(const struct task_struct *p)
{
return p->ioac.write_bytes >> 9;
}
static inline void task_io_account_cancelled_write(size_t bytes)
{
current->ioac.cancelled_write_bytes += bytes;
}
static inline void task_io_accounting_init(struct task_io_accounting *ioac)
{
memset(ioac, 0, sizeof(*ioac));
}
static inline void task_blk_io_accounting_add(struct task_io_accounting *dst,
struct task_io_accounting *src)
{
dst->read_bytes += src->read_bytes;
dst->write_bytes += src->write_bytes;
dst->cancelled_write_bytes += src->cancelled_write_bytes;
}
#else
static inline void task_io_account_read(size_t bytes)
{
}
static inline unsigned long task_io_get_inblock(const struct task_struct *p)
{
return 0;
}
static inline void task_io_account_write(size_t bytes)
{
}
static inline unsigned long task_io_get_oublock(const struct task_struct *p)
{
return 0;
}
static inline void task_io_account_cancelled_write(size_t bytes)
{
}
static inline void task_io_accounting_init(struct task_io_accounting *ioac)
{
}
static inline void task_blk_io_accounting_add(struct task_io_accounting *dst,
struct task_io_accounting *src)
{
}
#endif /* CONFIG_TASK_IO_ACCOUNTING */
#ifdef CONFIG_TASK_XACCT
static inline void task_chr_io_accounting_add(struct task_io_accounting *dst,
struct task_io_accounting *src)
{
dst->rchar += src->rchar;
dst->wchar += src->wchar;
dst->syscr += src->syscr;
dst->syscw += src->syscw;
}
#else
static inline void task_chr_io_accounting_add(struct task_io_accounting *dst,
struct task_io_accounting *src)
{
}
#endif /* CONFIG_TASK_XACCT */
static inline void task_io_accounting_add(struct task_io_accounting *dst,
struct task_io_accounting *src)
{
task_chr_io_accounting_add(dst, src);
task_blk_io_accounting_add(dst, src);
}
#endif /* __TASK_IO_ACCOUNTING_OPS_INCLUDED */