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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115/* 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_ACCOUNTINGstatic 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_XACCTstatic 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;}#elsestatic 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 */