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84 lines
2.7 KiB
84 lines
2.7 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* Copyright 2021 Google LLC |
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* Author: Daeho Jeong <[email protected]> |
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*/ |
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#ifndef __F2FS_IOSTAT_H__ |
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#define __F2FS_IOSTAT_H__ |
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struct bio_post_read_ctx; |
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#ifdef CONFIG_F2FS_IOSTAT |
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#define DEFAULT_IOSTAT_PERIOD_MS 3000 |
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#define MIN_IOSTAT_PERIOD_MS 100 |
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/* maximum period of iostat tracing is 1 day */ |
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#define MAX_IOSTAT_PERIOD_MS 8640000 |
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enum { |
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READ_IO, |
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WRITE_SYNC_IO, |
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WRITE_ASYNC_IO, |
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MAX_IO_TYPE, |
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}; |
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struct iostat_lat_info { |
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unsigned long sum_lat[MAX_IO_TYPE][NR_PAGE_TYPE]; /* sum of io latencies */ |
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unsigned long peak_lat[MAX_IO_TYPE][NR_PAGE_TYPE]; /* peak io latency */ |
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unsigned int bio_cnt[MAX_IO_TYPE][NR_PAGE_TYPE]; /* bio count */ |
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}; |
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extern int __maybe_unused iostat_info_seq_show(struct seq_file *seq, |
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void *offset); |
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extern void f2fs_reset_iostat(struct f2fs_sb_info *sbi); |
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extern void f2fs_update_iostat(struct f2fs_sb_info *sbi, struct inode *inode, |
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enum iostat_type type, unsigned long long io_bytes); |
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struct bio_iostat_ctx { |
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struct f2fs_sb_info *sbi; |
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unsigned long submit_ts; |
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enum page_type type; |
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struct bio_post_read_ctx *post_read_ctx; |
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}; |
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static inline void iostat_update_submit_ctx(struct bio *bio, |
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enum page_type type) |
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{ |
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struct bio_iostat_ctx *iostat_ctx = bio->bi_private; |
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iostat_ctx->submit_ts = jiffies; |
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iostat_ctx->type = type; |
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} |
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static inline struct bio_post_read_ctx *get_post_read_ctx(struct bio *bio) |
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{ |
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struct bio_iostat_ctx *iostat_ctx = bio->bi_private; |
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return iostat_ctx->post_read_ctx; |
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} |
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extern void iostat_update_and_unbind_ctx(struct bio *bio, int rw); |
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extern void iostat_alloc_and_bind_ctx(struct f2fs_sb_info *sbi, |
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struct bio *bio, struct bio_post_read_ctx *ctx); |
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extern int f2fs_init_iostat_processing(void); |
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extern void f2fs_destroy_iostat_processing(void); |
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extern int f2fs_init_iostat(struct f2fs_sb_info *sbi); |
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extern void f2fs_destroy_iostat(struct f2fs_sb_info *sbi); |
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#else |
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static inline void f2fs_update_iostat(struct f2fs_sb_info *sbi, struct inode *inode, |
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enum iostat_type type, unsigned long long io_bytes) {} |
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static inline void iostat_update_and_unbind_ctx(struct bio *bio, int rw) {} |
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static inline void iostat_alloc_and_bind_ctx(struct f2fs_sb_info *sbi, |
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struct bio *bio, struct bio_post_read_ctx *ctx) {} |
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static inline void iostat_update_submit_ctx(struct bio *bio, |
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enum page_type type) {} |
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static inline struct bio_post_read_ctx *get_post_read_ctx(struct bio *bio) |
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{ |
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return bio->bi_private; |
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} |
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static inline int f2fs_init_iostat_processing(void) { return 0; } |
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static inline void f2fs_destroy_iostat_processing(void) {} |
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static inline int f2fs_init_iostat(struct f2fs_sb_info *sbi) { return 0; } |
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static inline void f2fs_destroy_iostat(struct f2fs_sb_info *sbi) {} |
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#endif |
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#endif /* __F2FS_IOSTAT_H__ */
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