linux/fs/xfs/xfs_stats.h

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2000,2005 Silicon Graphics, Inc.
 * All Rights Reserved.
 */
#ifndef __XFS_STATS_H__
#define __XFS_STATS_H__


#include <linux/percpu.h>

/*
 * The btree stats arrays have fixed offsets for the different stats. We
 * store the base index in the btree cursor via XFS_STATS_CALC_INDEX() and
 * that allows us to use fixed offsets into the stats array for each btree
 * stat. These index offsets are defined in the order they will be emitted
 * in the stats files, so it is possible to add new btree stat types by
 * appending to the enum list below.
 */
enum { … };

/*
 * XFS global statistics
 */
struct __xfsstats { … };

#define xfsstats_offset(f) …

struct xfsstats { … };

/*
 * simple wrapper for getting the array index of s struct member offset
 */
#define XFS_STATS_CALC_INDEX(member) …


int xfs_stats_format(struct xfsstats __percpu *stats, char *buf);
void xfs_stats_clearall(struct xfsstats __percpu *stats);
extern struct xstats xfsstats;

#define XFS_STATS_INC(mp, v) …

#define XFS_STATS_DEC(mp, v) …

#define XFS_STATS_ADD(mp, v, inc) …

#define XFS_STATS_INC_OFF(mp, off) …

#define XFS_STATS_DEC_OFF(mp, off) …

#define XFS_STATS_ADD_OFF(mp, off, inc) …

#if defined(CONFIG_PROC_FS)

extern int xfs_init_procfs(void);
extern void xfs_cleanup_procfs(void);


#else	/* !CONFIG_PROC_FS */

static inline int xfs_init_procfs(void)
{
	return 0;
}

static inline void xfs_cleanup_procfs(void)
{
}

#endif	/* !CONFIG_PROC_FS */

#endif /* __XFS_STATS_H__ */