linux/fs/xfs/scrub/stats.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Copyright (C) 2023 Oracle.  All Rights Reserved.
 * Author: Darrick J. Wong <[email protected]>
 */
#include "xfs.h"
#include "xfs_fs.h"
#include "xfs_shared.h"
#include "xfs_format.h"
#include "xfs_trans_resv.h"
#include "xfs_mount.h"
#include "xfs_sysfs.h"
#include "xfs_btree.h"
#include "xfs_super.h"
#include "scrub/scrub.h"
#include "scrub/stats.h"
#include "scrub/trace.h"

struct xchk_scrub_stats { … };

struct xchk_stats { … };


static struct xchk_stats	global_stats;

static const char *name_map[XFS_SCRUB_TYPE_NR] = …;

/* Format the scrub stats into a text buffer, similar to pcp style. */
STATIC ssize_t
xchk_stats_format(
	struct xchk_stats	*cs,
	char			*buf,
	size_t			remaining)
{ … }

/* Estimate the worst case buffer size required to hold the whole report. */
STATIC size_t
xchk_stats_estimate_bufsize(
	struct xchk_stats	*cs)
{ … }

/* Clear all counters. */
STATIC void
xchk_stats_clearall(
	struct xchk_stats	*cs)
{ … }

#define XFS_SCRUB_OFLAG_UNCLEAN …

STATIC void
xchk_stats_merge_one(
	struct xchk_stats		*cs,
	const struct xfs_scrub_metadata	*sm,
	const struct xchk_stats_run	*run)
{ … }

/* Merge these scrub-run stats into the global and mount stat data. */
void
xchk_stats_merge(
	struct xfs_mount		*mp,
	const struct xfs_scrub_metadata	*sm,
	const struct xchk_stats_run	*run)
{ … }

/* debugfs boilerplate */

static ssize_t
xchk_scrub_stats_read(
	struct file		*file,
	char __user		*ubuf,
	size_t			count,
	loff_t			*ppos)
{ … }

static const struct file_operations scrub_stats_fops = …;

static ssize_t
xchk_clear_scrub_stats_write(
	struct file		*file,
	const char __user	*ubuf,
	size_t			count,
	loff_t			*ppos)
{ … }

static const struct file_operations clear_scrub_stats_fops = …;

/* Initialize the stats object. */
STATIC int
xchk_stats_init(
	struct xchk_stats	*cs,
	struct xfs_mount	*mp)
{ … }

/* Connect the stats object to debugfs. */
void
xchk_stats_register(
	struct xchk_stats	*cs,
	struct dentry		*parent)
{ … }

/* Free all resources related to the stats object. */
STATIC int
xchk_stats_teardown(
	struct xchk_stats	*cs)
{ … }

/* Disconnect the stats object from debugfs. */
void
xchk_stats_unregister(
	struct xchk_stats	*cs)
{ … }

/* Initialize global stats and register them */
int __init
xchk_global_stats_setup(
	struct dentry		*parent)
{ … }

/* Unregister global stats and tear them down */
void
xchk_global_stats_teardown(void)
{ … }

/* Allocate per-mount stats */
int
xchk_mount_stats_alloc(
	struct xfs_mount	*mp)
{ … }

/* Free per-mount stats */
void
xchk_mount_stats_free(
	struct xfs_mount	*mp)
{ … }