1 /* SPDX-License-Identifier: GPL-2.0 */ 1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* 2 /*
3 * Copyright 2021 Google LLC 3 * Copyright 2021 Google LLC
4 * Author: Daeho Jeong <daehojeong@google.com> 4 * Author: Daeho Jeong <daehojeong@google.com>
5 */ 5 */
6 #ifndef __F2FS_IOSTAT_H__ 6 #ifndef __F2FS_IOSTAT_H__
7 #define __F2FS_IOSTAT_H__ 7 #define __F2FS_IOSTAT_H__
8 8
9 struct bio_post_read_ctx; 9 struct bio_post_read_ctx;
10 10
11 enum iostat_lat_type { 11 enum iostat_lat_type {
12 READ_IO = 0, 12 READ_IO = 0,
13 WRITE_SYNC_IO, 13 WRITE_SYNC_IO,
14 WRITE_ASYNC_IO, 14 WRITE_ASYNC_IO,
15 MAX_IO_TYPE, 15 MAX_IO_TYPE,
16 }; 16 };
17 17
18 #ifdef CONFIG_F2FS_IOSTAT 18 #ifdef CONFIG_F2FS_IOSTAT
19 19
20 #define NUM_PREALLOC_IOSTAT_CTXS 128 20 #define NUM_PREALLOC_IOSTAT_CTXS 128
21 #define DEFAULT_IOSTAT_PERIOD_MS 3000 21 #define DEFAULT_IOSTAT_PERIOD_MS 3000
22 #define MIN_IOSTAT_PERIOD_MS 100 22 #define MIN_IOSTAT_PERIOD_MS 100
23 /* maximum period of iostat tracing is 1 day * 23 /* maximum period of iostat tracing is 1 day */
24 #define MAX_IOSTAT_PERIOD_MS 864000 24 #define MAX_IOSTAT_PERIOD_MS 8640000
25 25
26 struct iostat_lat_info { 26 struct iostat_lat_info {
27 unsigned long sum_lat[MAX_IO_TYPE][NR_ 27 unsigned long sum_lat[MAX_IO_TYPE][NR_PAGE_TYPE]; /* sum of io latencies */
28 unsigned long peak_lat[MAX_IO_TYPE][NR 28 unsigned long peak_lat[MAX_IO_TYPE][NR_PAGE_TYPE]; /* peak io latency */
29 unsigned int bio_cnt[MAX_IO_TYPE][NR_P 29 unsigned int bio_cnt[MAX_IO_TYPE][NR_PAGE_TYPE]; /* bio count */
30 }; 30 };
31 31
32 extern int __maybe_unused iostat_info_seq_show 32 extern int __maybe_unused iostat_info_seq_show(struct seq_file *seq,
33 void *offset); 33 void *offset);
34 extern void f2fs_reset_iostat(struct f2fs_sb_i 34 extern void f2fs_reset_iostat(struct f2fs_sb_info *sbi);
35 extern void f2fs_update_iostat(struct f2fs_sb_ 35 extern void f2fs_update_iostat(struct f2fs_sb_info *sbi, struct inode *inode,
36 enum iostat_type type, 36 enum iostat_type type, unsigned long long io_bytes);
37 37
38 struct bio_iostat_ctx { 38 struct bio_iostat_ctx {
39 struct f2fs_sb_info *sbi; 39 struct f2fs_sb_info *sbi;
40 unsigned long submit_ts; 40 unsigned long submit_ts;
41 enum page_type type; 41 enum page_type type;
42 struct bio_post_read_ctx *post_read_ct 42 struct bio_post_read_ctx *post_read_ctx;
43 }; 43 };
44 44
45 static inline void iostat_update_submit_ctx(st 45 static inline void iostat_update_submit_ctx(struct bio *bio,
46 enum page_type type) 46 enum page_type type)
47 { 47 {
48 struct bio_iostat_ctx *iostat_ctx = bi 48 struct bio_iostat_ctx *iostat_ctx = bio->bi_private;
49 49
50 iostat_ctx->submit_ts = jiffies; 50 iostat_ctx->submit_ts = jiffies;
51 iostat_ctx->type = type; 51 iostat_ctx->type = type;
52 } 52 }
53 53
54 static inline struct bio_post_read_ctx *get_po 54 static inline struct bio_post_read_ctx *get_post_read_ctx(struct bio *bio)
55 { 55 {
56 struct bio_iostat_ctx *iostat_ctx = bi 56 struct bio_iostat_ctx *iostat_ctx = bio->bi_private;
57 57
58 return iostat_ctx->post_read_ctx; 58 return iostat_ctx->post_read_ctx;
59 } 59 }
60 60
61 extern void iostat_update_and_unbind_ctx(struc 61 extern void iostat_update_and_unbind_ctx(struct bio *bio);
62 extern void iostat_alloc_and_bind_ctx(struct f 62 extern void iostat_alloc_and_bind_ctx(struct f2fs_sb_info *sbi,
63 struct bio *bio, struct bio_po 63 struct bio *bio, struct bio_post_read_ctx *ctx);
64 extern int f2fs_init_iostat_processing(void); 64 extern int f2fs_init_iostat_processing(void);
65 extern void f2fs_destroy_iostat_processing(voi 65 extern void f2fs_destroy_iostat_processing(void);
66 extern int f2fs_init_iostat(struct f2fs_sb_inf 66 extern int f2fs_init_iostat(struct f2fs_sb_info *sbi);
67 extern void f2fs_destroy_iostat(struct f2fs_sb 67 extern void f2fs_destroy_iostat(struct f2fs_sb_info *sbi);
68 #else 68 #else
69 static inline void f2fs_update_iostat(struct f 69 static inline void f2fs_update_iostat(struct f2fs_sb_info *sbi, struct inode *inode,
70 enum iostat_type type, unsigne 70 enum iostat_type type, unsigned long long io_bytes) {}
71 static inline void iostat_update_and_unbind_ct 71 static inline void iostat_update_and_unbind_ctx(struct bio *bio) {}
72 static inline void iostat_alloc_and_bind_ctx(s 72 static inline void iostat_alloc_and_bind_ctx(struct f2fs_sb_info *sbi,
73 struct bio *bio, struct bio_po 73 struct bio *bio, struct bio_post_read_ctx *ctx) {}
74 static inline void iostat_update_submit_ctx(st 74 static inline void iostat_update_submit_ctx(struct bio *bio,
75 enum page_type type) {} 75 enum page_type type) {}
76 static inline struct bio_post_read_ctx *get_po 76 static inline struct bio_post_read_ctx *get_post_read_ctx(struct bio *bio)
77 { 77 {
78 return bio->bi_private; 78 return bio->bi_private;
79 } 79 }
80 static inline int f2fs_init_iostat_processing( 80 static inline int f2fs_init_iostat_processing(void) { return 0; }
81 static inline void f2fs_destroy_iostat_process 81 static inline void f2fs_destroy_iostat_processing(void) {}
82 static inline int f2fs_init_iostat(struct f2fs 82 static inline int f2fs_init_iostat(struct f2fs_sb_info *sbi) { return 0; }
83 static inline void f2fs_destroy_iostat(struct 83 static inline void f2fs_destroy_iostat(struct f2fs_sb_info *sbi) {}
84 #endif 84 #endif
85 #endif /* __F2FS_IOSTAT_H__ */ 85 #endif /* __F2FS_IOSTAT_H__ */
86 86
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