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