projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 52118743 DJ |
1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | /* | |
| 3 | * Copyright 2021 Google LLC | |
| 4 | * Author: Daeho Jeong <[email protected]> | |
| 5 | */ | |
| 6 | #ifndef __F2FS_IOSTAT_H__ | |
| 7 | #define __F2FS_IOSTAT_H__ | |
| 8 | ||
| a4b68176 DJ |
9 | struct bio_post_read_ctx; |
| 10 | ||
| d9bac032 YL |
11 | enum iostat_lat_type { |
| 12 | READ_IO = 0, | |
| 13 | WRITE_SYNC_IO, | |
| 14 | WRITE_ASYNC_IO, | |
| 15 | MAX_IO_TYPE, | |
| 16 | }; | |
| 17 | ||
| 52118743 DJ |
18 | #ifdef CONFIG_F2FS_IOSTAT |
| 19 | ||
| d9bac032 | 20 | #define NUM_PREALLOC_IOSTAT_CTXS 128 |
| 52118743 DJ |
21 | #define DEFAULT_IOSTAT_PERIOD_MS 3000 |
| 22 | #define MIN_IOSTAT_PERIOD_MS 100 | |
| 23 | /* maximum period of iostat tracing is 1 day */ | |
| 24 | #define MAX_IOSTAT_PERIOD_MS 8640000 | |
| 25 | ||
| a4b68176 DJ |
26 | struct iostat_lat_info { |
| 27 | unsigned long sum_lat[MAX_IO_TYPE][NR_PAGE_TYPE]; /* sum of io latencies */ | |
| 28 | unsigned long peak_lat[MAX_IO_TYPE][NR_PAGE_TYPE]; /* peak io latency */ | |
| 29 | unsigned int bio_cnt[MAX_IO_TYPE][NR_PAGE_TYPE]; /* bio count */ | |
| 30 | }; | |
| 31 | ||
| 52118743 DJ |
32 | extern int __maybe_unused iostat_info_seq_show(struct seq_file *seq, |
| 33 | void *offset); | |
| 34 | extern void f2fs_reset_iostat(struct f2fs_sb_info *sbi); | |
| 34a23525 | 35 | extern void f2fs_update_iostat(struct f2fs_sb_info *sbi, struct inode *inode, |
| 52118743 | 36 | enum iostat_type type, unsigned long long io_bytes); |
| a4b68176 DJ |
37 | |
| 38 | struct bio_iostat_ctx { | |
| 39 | struct f2fs_sb_info *sbi; | |
| 40 | unsigned long submit_ts; | |
| 41 | enum page_type type; | |
| 42 | struct bio_post_read_ctx *post_read_ctx; | |
| 43 | }; | |
| 44 | ||
| 45 | static inline void iostat_update_submit_ctx(struct bio *bio, | |
| 46 | enum page_type type) | |
| 47 | { | |
| 48 | struct bio_iostat_ctx *iostat_ctx = bio->bi_private; | |
| 49 | ||
| 50 | iostat_ctx->submit_ts = jiffies; | |
| 51 | iostat_ctx->type = type; | |
| 52 | } | |
| 53 | ||
| 54 | static inline struct bio_post_read_ctx *get_post_read_ctx(struct bio *bio) | |
| 55 | { | |
| 56 | struct bio_iostat_ctx *iostat_ctx = bio->bi_private; | |
| 57 | ||
| 58 | return iostat_ctx->post_read_ctx; | |
| 59 | } | |
| 60 | ||
| d9bac032 | 61 | extern void iostat_update_and_unbind_ctx(struct bio *bio); |
| a4b68176 DJ |
62 | extern void iostat_alloc_and_bind_ctx(struct f2fs_sb_info *sbi, |
| 63 | struct bio *bio, struct bio_post_read_ctx *ctx); | |
| 64 | extern int f2fs_init_iostat_processing(void); | |
| 65 | extern void f2fs_destroy_iostat_processing(void); | |
| 52118743 | 66 | extern int f2fs_init_iostat(struct f2fs_sb_info *sbi); |
| a4b68176 | 67 | extern void f2fs_destroy_iostat(struct f2fs_sb_info *sbi); |
| 52118743 | 68 | #else |
| 34a23525 | 69 | static inline void f2fs_update_iostat(struct f2fs_sb_info *sbi, struct inode *inode, |
| 52118743 | 70 | enum iostat_type type, unsigned long long io_bytes) {} |
| d9bac032 | 71 | static inline void iostat_update_and_unbind_ctx(struct bio *bio) {} |
| a4b68176 DJ |
72 | static inline void iostat_alloc_and_bind_ctx(struct f2fs_sb_info *sbi, |
| 73 | struct bio *bio, struct bio_post_read_ctx *ctx) {} | |
| 74 | static inline void iostat_update_submit_ctx(struct bio *bio, | |
| 75 | enum page_type type) {} | |
| 76 | static inline struct bio_post_read_ctx *get_post_read_ctx(struct bio *bio) | |
| 77 | { | |
| 78 | return bio->bi_private; | |
| 79 | } | |
| 80 | static inline int f2fs_init_iostat_processing(void) { return 0; } | |
| 81 | static inline void f2fs_destroy_iostat_processing(void) {} | |
| 52118743 | 82 | static inline int f2fs_init_iostat(struct f2fs_sb_info *sbi) { return 0; } |
| a4b68176 | 83 | static inline void f2fs_destroy_iostat(struct f2fs_sb_info *sbi) {} |
| 52118743 DJ |
84 | #endif |
| 85 | #endif /* __F2FS_IOSTAT_H__ */ |