diff options
| author | Daeho Jeong <daehojeong@google.com> | 2021-08-19 20:52:28 -0700 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2021-08-23 10:25:51 -0700 |
| commit | 521187439abfb3e1c946796dc2187c443e5457ab (patch) | |
| tree | fce6c67e0ba999bb4ab8f3463dccf8f005c77be5 /fs/f2fs/iostat.h | |
| parent | bbe1da7e34ac5a830163bfdfa09cbe3dadfda3ce (diff) | |
f2fs: separate out iostat feature
Added F2FS_IOSTAT config option to support getting IO statistics through
sysfs and printing out periodic IO statistics tracepoint events and
moved I/O statistics related codes into separate files for better
maintenance.
Signed-off-by: Daeho Jeong <daehojeong@google.com>
Reviewed-by: Chao Yu <chao@kernel.org>
[Jaegeuk Kim: set default=y]
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/iostat.h')
| -rw-r--r-- | fs/f2fs/iostat.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/fs/f2fs/iostat.h b/fs/f2fs/iostat.h new file mode 100644 index 000000000000..46e4a36fc8e9 --- /dev/null +++ b/fs/f2fs/iostat.h @@ -0,0 +1,27 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright 2021 Google LLC + * Author: Daeho Jeong <daehojeong@google.com> + */ +#ifndef __F2FS_IOSTAT_H__ +#define __F2FS_IOSTAT_H__ + +#ifdef CONFIG_F2FS_IOSTAT + +#define DEFAULT_IOSTAT_PERIOD_MS 3000 +#define MIN_IOSTAT_PERIOD_MS 100 +/* maximum period of iostat tracing is 1 day */ +#define MAX_IOSTAT_PERIOD_MS 8640000 + +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); +extern int f2fs_init_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 int f2fs_init_iostat(struct f2fs_sb_info *sbi) { return 0; } +#endif +#endif /* __F2FS_IOSTAT_H__ */ |