linux/fs/xfs/scrub/stats.h
Darrick J. Wong d7a74cad8f xfs: track usage statistics of online fsck
Track the usage, outcomes, and run times of the online fsck code, and
report these values via debugfs.  The columns in the file are:

 * scrubber name

 * number of scrub invocations
 * clean objects found
 * corruptions found
 * optimizations found
 * cross referencing failures
 * inconsistencies found during cross referencing
 * incomplete scrubs
 * warnings
 * number of time scrub had to retry
 * cumulative amount of time spent scrubbing (microseconds)

 * number of repair inovcations
 * successfully repaired objects
 * cumuluative amount of time spent repairing (microseconds)

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
2023-08-10 07:48:07 -07:00

60 lines
1.7 KiB
C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2023 Oracle. All Rights Reserved.
* Author: Darrick J. Wong <djwong@kernel.org>
*/
#ifndef __XFS_SCRUB_STATS_H__
#define __XFS_SCRUB_STATS_H__
struct xchk_stats_run {
u64 scrub_ns;
u64 repair_ns;
unsigned int retries;
bool repair_attempted;
bool repair_succeeded;
};
#ifdef CONFIG_XFS_ONLINE_SCRUB_STATS
struct xchk_stats;
int __init xchk_global_stats_setup(struct dentry *parent);
void xchk_global_stats_teardown(void);
int xchk_mount_stats_alloc(struct xfs_mount *mp);
void xchk_mount_stats_free(struct xfs_mount *mp);
void xchk_stats_register(struct xchk_stats *cs, struct dentry *parent);
void xchk_stats_unregister(struct xchk_stats *cs);
void xchk_stats_merge(struct xfs_mount *mp, const struct xfs_scrub_metadata *sm,
const struct xchk_stats_run *run);
static inline u64 xchk_stats_now(void) { return ktime_get_ns(); }
static inline u64 xchk_stats_elapsed_ns(u64 since)
{
u64 now = xchk_stats_now();
/*
* If the system doesn't have a high enough resolution clock, charge at
* least one nanosecond so that our stats don't report instantaneous
* runtimes.
*/
if (now == since)
return 1;
return now - since;
}
#else
# define xchk_global_stats_setup(parent) (0)
# define xchk_global_stats_teardown() ((void)0)
# define xchk_mount_stats_alloc(mp) (0)
# define xchk_mount_stats_free(mp) ((void)0)
# define xchk_stats_register(cs, parent) ((void)0)
# define xchk_stats_unregister(cs) ((void)0)
# define xchk_stats_now() (0)
# define xchk_stats_elapsed_ns(x) (0 * (x))
# define xchk_stats_merge(mp, sm, run) ((void)0)
#endif /* CONFIG_XFS_ONLINE_SCRUB_STATS */
#endif /* __XFS_SCRUB_STATS_H__ */