1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * Copyright (C) 2023 Oracle. All Rights Reserved. |
4 | * Author: Darrick J. Wong <djwong@kernel.org> |
5 | */ |
6 | #ifndef __XFS_SCRUB_STATS_H__ |
7 | #define __XFS_SCRUB_STATS_H__ |
8 | |
9 | struct xchk_stats_run { |
10 | u64 scrub_ns; |
11 | u64 repair_ns; |
12 | unsigned int retries; |
13 | bool repair_attempted; |
14 | bool repair_succeeded; |
15 | }; |
16 | |
17 | #ifdef CONFIG_XFS_ONLINE_SCRUB_STATS |
18 | struct xchk_stats; |
19 | |
20 | int __init xchk_global_stats_setup(struct dentry *parent); |
21 | void xchk_global_stats_teardown(void); |
22 | |
23 | int xchk_mount_stats_alloc(struct xfs_mount *mp); |
24 | void xchk_mount_stats_free(struct xfs_mount *mp); |
25 | |
26 | void xchk_stats_register(struct xchk_stats *cs, struct dentry *parent); |
27 | void xchk_stats_unregister(struct xchk_stats *cs); |
28 | |
29 | void xchk_stats_merge(struct xfs_mount *mp, const struct xfs_scrub_metadata *sm, |
30 | const struct xchk_stats_run *run); |
31 | |
32 | static inline u64 xchk_stats_now(void) { return ktime_get_ns(); } |
33 | static inline u64 xchk_stats_elapsed_ns(u64 since) |
34 | { |
35 | u64 now = xchk_stats_now(); |
36 | |
37 | /* |
38 | * If the system doesn't have a high enough resolution clock, charge at |
39 | * least one nanosecond so that our stats don't report instantaneous |
40 | * runtimes. |
41 | */ |
42 | if (now == since) |
43 | return 1; |
44 | |
45 | return now - since; |
46 | } |
47 | #else |
48 | # define xchk_global_stats_setup(parent) (0) |
49 | # define xchk_global_stats_teardown() ((void)0) |
50 | # define xchk_mount_stats_alloc(mp) (0) |
51 | # define xchk_mount_stats_free(mp) ((void)0) |
52 | # define xchk_stats_register(cs, parent) ((void)0) |
53 | # define xchk_stats_unregister(cs) ((void)0) |
54 | # define xchk_stats_now() (0) |
55 | # define xchk_stats_elapsed_ns(x) (0 * (x)) |
56 | # define xchk_stats_merge(mp, sm, run) ((void)0) |
57 | #endif /* CONFIG_XFS_ONLINE_SCRUB_STATS */ |
58 | |
59 | #endif /* __XFS_SCRUB_STATS_H__ */ |
60 | |