projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 52118743 DJ |
1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | /* | |
| 3 | * Copyright 2021 Google LLC | |
| 4 | * Author: Daeho Jeong <daehojeong@google.com> | |
| 5 | */ | |
| 6 | #ifndef __F2FS_IOSTAT_H__ | |
| 7 | #define __F2FS_IOSTAT_H__ | |
| 8 | ||
| a4b68176 DJ |
9 | struct bio_post_read_ctx; |
| 10 | ||
| 52118743 DJ |
11 | #ifdef CONFIG_F2FS_IOSTAT |
| 12 | ||
| 13 | #define DEFAULT_IOSTAT_PERIOD_MS 3000 | |
| 14 | #define MIN_IOSTAT_PERIOD_MS 100 | |
| 15 | /* maximum period of iostat tracing is 1 day */ | |
| 16 | #define MAX_IOSTAT_PERIOD_MS 8640000 | |
| 17 | ||
| a4b68176 DJ |
18 | enum { |
| 19 | READ_IO, | |
| 20 | WRITE_SYNC_IO, | |
| 21 | WRITE_ASYNC_IO, | |
| 22 | MAX_IO_TYPE, | |
| 23 | }; | |
| 24 | ||
| 25 | struct iostat_lat_info { | |
| 26 | unsigned long sum_lat[MAX_IO_TYPE][NR_PAGE_TYPE]; /* sum of io latencies */ | |
| 27 | unsigned long peak_lat[MAX_IO_TYPE][NR_PAGE_TYPE]; /* peak io latency */ | |
| 28 | unsigned int bio_cnt[MAX_IO_TYPE][NR_PAGE_TYPE]; /* bio count */ | |
| 29 | }; | |
| 30 | ||
| 52118743 DJ |
31 | extern int __maybe_unused iostat_info_seq_show(struct seq_file *seq, |
| 32 | void *offset); | |
| 33 | extern void f2fs_reset_iostat(struct f2fs_sb_info *sbi); | |
| 34a23525 | 34 | extern void f2fs_update_iostat(struct f2fs_sb_info *sbi, struct inode *inode, |
| 52118743 | 35 | enum iostat_type type, unsigned long long io_bytes); |
| a4b68176 DJ |
36 | |
| 37 | struct bio_iostat_ctx { | |
| 38 | struct f2fs_sb_info *sbi; | |
| 39 | unsigned long submit_ts; | |
| 40 | enum page_type type; | |
| 41 | struct bio_post_read_ctx *post_read_ctx; | |
| 42 | }; | |
| 43 | ||
| 44 | static inline void iostat_update_submit_ctx(struct bio *bio, | |
| 45 | enum page_type type) | |
| 46 | { | |
| 47 | struct bio_iostat_ctx *iostat_ctx = bio->bi_private; | |
| 48 | ||
| 49 | iostat_ctx->submit_ts = jiffies; | |
| 50 | iostat_ctx->type = type; | |
| 51 | } | |
| 52 | ||
| 53 | static inline struct bio_post_read_ctx *get_post_read_ctx(struct bio *bio) | |
| 54 | { | |
| 55 | struct bio_iostat_ctx *iostat_ctx = bio->bi_private; | |
| 56 | ||
| 57 | return iostat_ctx->post_read_ctx; | |
| 58 | } | |
| 59 | ||
| 60 | extern void iostat_update_and_unbind_ctx(struct bio *bio, int rw); | |
| 61 | extern void iostat_alloc_and_bind_ctx(struct f2fs_sb_info *sbi, | |
| 62 | struct bio *bio, struct bio_post_read_ctx *ctx); | |
| 63 | extern int f2fs_init_iostat_processing(void); | |
| 64 | extern void f2fs_destroy_iostat_processing(void); | |
| 52118743 | 65 | extern int f2fs_init_iostat(struct f2fs_sb_info *sbi); |
| a4b68176 | 66 | extern void f2fs_destroy_iostat(struct f2fs_sb_info *sbi); |
| 52118743 | 67 | #else |
| 34a23525 | 68 | static inline void f2fs_update_iostat(struct f2fs_sb_info *sbi, struct inode *inode, |
| 52118743 | 69 | enum iostat_type type, unsigned long long io_bytes) {} |
| a4b68176 DJ |
70 | static inline void iostat_update_and_unbind_ctx(struct bio *bio, int rw) {} |
| 71 | static inline void iostat_alloc_and_bind_ctx(struct f2fs_sb_info *sbi, | |
| 72 | struct bio *bio, struct bio_post_read_ctx *ctx) {} | |
| 73 | static inline void iostat_update_submit_ctx(struct bio *bio, | |
| 74 | enum page_type type) {} | |
| 75 | static inline struct bio_post_read_ctx *get_post_read_ctx(struct bio *bio) | |
| 76 | { | |
| 77 | return bio->bi_private; | |
| 78 | } | |
| 79 | static inline int f2fs_init_iostat_processing(void) { return 0; } | |
| 80 | static inline void f2fs_destroy_iostat_processing(void) {} | |
| 52118743 | 81 | static inline int f2fs_init_iostat(struct f2fs_sb_info *sbi) { return 0; } |
| a4b68176 | 82 | static inline void f2fs_destroy_iostat(struct f2fs_sb_info *sbi) {} |
| 52118743 DJ |
83 | #endif |
| 84 | #endif /* __F2FS_IOSTAT_H__ */ |