| /* 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__ */ |
