diff options
Diffstat (limited to 'fs/f2fs/iostat.h')
| -rw-r--r-- | fs/f2fs/iostat.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/fs/f2fs/iostat.h b/fs/f2fs/iostat.h index 46e4a36fc8e9..22a2d01f57ef 100644 --- a/fs/f2fs/iostat.h +++ b/fs/f2fs/iostat.h @@ -6,6 +6,8 @@ #ifndef __F2FS_IOSTAT_H__ #define __F2FS_IOSTAT_H__ +struct bio_post_read_ctx; + #ifdef CONFIG_F2FS_IOSTAT #define DEFAULT_IOSTAT_PERIOD_MS 3000 @@ -13,15 +15,70 @@ /* maximum period of iostat tracing is 1 day */ #define MAX_IOSTAT_PERIOD_MS 8640000 +enum { + READ_IO, + WRITE_SYNC_IO, + WRITE_ASYNC_IO, + MAX_IO_TYPE, +}; + +struct iostat_lat_info { + unsigned long sum_lat[MAX_IO_TYPE][NR_PAGE_TYPE]; /* sum of io latencies */ + unsigned long peak_lat[MAX_IO_TYPE][NR_PAGE_TYPE]; /* peak io latency */ + unsigned int bio_cnt[MAX_IO_TYPE][NR_PAGE_TYPE]; /* bio count */ +}; + extern int __maybe_unused iostat_info_seq_show(struct seq_file *seq, void *offset); extern void f2fs_reset_iostat(struct f2fs_sb_info *sbi); extern void f2fs_update_iostat(struct f2fs_sb_info *sbi, enum iostat_type type, unsigned long long io_bytes); + +struct bio_iostat_ctx { + struct f2fs_sb_info *sbi; + unsigned long submit_ts; + enum page_type type; + struct bio_post_read_ctx *post_read_ctx; +}; + +static inline void iostat_update_submit_ctx(struct bio *bio, + enum page_type type) +{ + struct bio_iostat_ctx *iostat_ctx = bio->bi_private; + + iostat_ctx->submit_ts = jiffies; + iostat_ctx->type = type; +} + +static inline struct bio_post_read_ctx *get_post_read_ctx(struct bio *bio) +{ + struct bio_iostat_ctx *iostat_ctx = bio->bi_private; + + return iostat_ctx->post_read_ctx; +} + +extern void iostat_update_and_unbind_ctx(struct bio *bio, int rw); +extern void iostat_alloc_and_bind_ctx(struct f2fs_sb_info *sbi, + struct bio *bio, struct bio_post_read_ctx *ctx); +extern int f2fs_init_iostat_processing(void); +extern void f2fs_destroy_iostat_processing(void); extern int f2fs_init_iostat(struct f2fs_sb_info *sbi); +extern void f2fs_destroy_iostat(struct f2fs_sb_info *sbi); #else static inline void f2fs_update_iostat(struct f2fs_sb_info *sbi, enum iostat_type type, unsigned long long io_bytes) {} +static inline void iostat_update_and_unbind_ctx(struct bio *bio, int rw) {} +static inline void iostat_alloc_and_bind_ctx(struct f2fs_sb_info *sbi, + struct bio *bio, struct bio_post_read_ctx *ctx) {} +static inline void iostat_update_submit_ctx(struct bio *bio, + enum page_type type) {} +static inline struct bio_post_read_ctx *get_post_read_ctx(struct bio *bio) +{ + return bio->bi_private; +} +static inline int f2fs_init_iostat_processing(void) { return 0; } +static inline void f2fs_destroy_iostat_processing(void) {} static inline int f2fs_init_iostat(struct f2fs_sb_info *sbi) { return 0; } +static inline void f2fs_destroy_iostat(struct f2fs_sb_info *sbi) {} #endif #endif /* __F2FS_IOSTAT_H__ */ |