7 * Use for maintaining statistics
19 * A single data sample
29 * Dynamically growing data sample log
32 unsigned long nr_samples;
33 unsigned long max_samples;
34 struct io_sample *log;
44 * When logging io actions, this matches a single sent io_u
48 struct rb_node rb_node;
49 struct flist_head list;
51 struct flist_head trim_list;
54 struct fio_file *file;
56 unsigned long long offset;
62 unsigned int file_action;
76 extern int __must_check read_iolog_get(struct thread_data *, struct io_u *);
77 extern void log_io_u(struct thread_data *, struct io_u *);
78 extern void log_file(struct thread_data *, struct fio_file *, enum file_log_act);
79 extern int __must_check init_iolog(struct thread_data *td);
80 extern void log_io_piece(struct thread_data *, struct io_u *);
81 extern void queue_io_piece(struct thread_data *, struct io_piece *);
82 extern void prune_io_piece_log(struct thread_data *);
83 extern void write_iolog_close(struct thread_data *);
88 extern void add_lat_sample(struct thread_data *, enum fio_ddir, unsigned long,
90 extern void add_clat_sample(struct thread_data *, enum fio_ddir, unsigned long,
92 extern void add_slat_sample(struct thread_data *, enum fio_ddir, unsigned long,
94 extern void add_bw_sample(struct thread_data *, enum fio_ddir, unsigned int,
96 extern void add_iops_sample(struct thread_data *, enum fio_ddir, struct timeval *);
97 extern void init_disk_util(struct thread_data *);
98 extern void update_rusage_stat(struct thread_data *);
99 extern void update_io_ticks(void);
100 extern void setup_log(struct io_log **);
101 extern void finish_log(struct thread_data *, struct io_log *, const char *);
102 extern void finish_log_named(struct thread_data *, struct io_log *, const char *, const char *);
103 extern void __finish_log(struct io_log *, const char *);
104 extern struct io_log *agg_io_log[2];
105 extern int write_bw_log;
106 extern void add_agg_sample(unsigned long, enum fio_ddir, unsigned int);
108 static inline void init_ipo(struct io_piece *ipo)
110 memset(ipo, 0, sizeof(*ipo));
111 INIT_FLIST_HEAD(&ipo->trim_list);