135 lines
3 KiB
C
135 lines
3 KiB
C
#ifndef FIO_DISKUTIL_H
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#define FIO_DISKUTIL_H
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#include "json.h"
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#define FIO_DU_NAME_SZ 64
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#include "lib/output_buffer.h"
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#include "helper_thread.h"
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struct disk_util_stats {
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uint64_t ios[2];
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uint64_t merges[2];
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uint64_t sectors[2];
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uint64_t ticks[2];
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uint64_t io_ticks;
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uint64_t time_in_queue;
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uint64_t msec;
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};
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/*
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* Disk utils as read in /sys/block/<dev>/stat
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*/
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struct disk_util_stat {
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uint8_t name[FIO_DU_NAME_SZ];
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struct disk_util_stats s;
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};
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struct disk_util_agg {
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uint64_t ios[2];
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uint64_t merges[2];
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uint64_t sectors[2];
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uint64_t ticks[2];
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uint64_t io_ticks;
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uint64_t time_in_queue;
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uint32_t slavecount;
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uint32_t pad;
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fio_fp64_t max_util;
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};
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/*
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* Per-device disk util management
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*/
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struct disk_util {
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struct flist_head list;
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/* If this disk is a slave, hook it into the master's
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* list using this head.
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*/
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struct flist_head slavelist;
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char *sysfs_root;
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char path[PATH_MAX];
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int major, minor;
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struct disk_util_stat dus;
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struct disk_util_stat last_dus;
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struct disk_util_agg agg;
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/* For software raids, this entry maintains pointers to the
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* entries for the slave devices. The disk_util entries for
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* the slaves devices should primarily be maintained through
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* the disk_list list, i.e. for memory allocation and
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* de-allocation, etc. Whereas this list should be used only
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* for aggregating a software RAID's disk util figures.
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*/
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struct flist_head slaves;
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struct timeval time;
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struct fio_mutex *lock;
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unsigned long users;
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};
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static inline void disk_util_mod(struct disk_util *du, int val)
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{
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if (du) {
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struct flist_head *n;
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fio_mutex_down(du->lock);
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du->users += val;
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flist_for_each(n, &du->slavelist) {
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struct disk_util *slave;
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slave = flist_entry(n, struct disk_util, slavelist);
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slave->users += val;
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}
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fio_mutex_up(du->lock);
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}
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}
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static inline void disk_util_inc(struct disk_util *du)
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{
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disk_util_mod(du, 1);
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}
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static inline void disk_util_dec(struct disk_util *du)
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{
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disk_util_mod(du, -1);
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}
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#define DISK_UTIL_MSEC (250)
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extern struct flist_head disk_list;
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/*
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* disk util stuff
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*/
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#ifdef FIO_HAVE_DISK_UTIL
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extern void print_disk_util(struct disk_util_stat *, struct disk_util_agg *, int terse, struct buf_output *);
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extern void show_disk_util(int terse, struct json_object *parent, struct buf_output *);
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extern void json_array_add_disk_util(struct disk_util_stat *dus,
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struct disk_util_agg *agg, struct json_array *parent);
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extern void init_disk_util(struct thread_data *);
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extern int update_io_ticks(void);
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extern void setup_disk_util(void);
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extern void disk_util_prune_entries(void);
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#else
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/* keep this as a function to avoid a warning in handle_du() */
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static inline void print_disk_util(struct disk_util_stat *du,
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struct disk_util_agg *agg, int terse,
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struct buf_output *out)
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{
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}
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#define show_disk_util(terse, parent, out)
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#define disk_util_prune_entries()
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#define init_disk_util(td)
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#define setup_disk_util()
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#define json_array_add_disk_util(dus, agg, parent)
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static inline int update_io_ticks(void)
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{
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return helper_should_exit();
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}
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#endif
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#endif
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