linux/fs/bcachefs/sysfs.h
Daniel Hill 104c69745f bcachefs: Add persistent counters
This adds a new superblock field for persisting counters
and adds a sysfs interface in counters/ exposing these counters.

The superblock field is ignored by older versions letting us avoid
an on disk version bump.

Each sysfs file outputs a counter that tracks since filesystem
creation and a counter for the current mount session.

Signed-off-by: Daniel Hill <daniel@gluo.nz>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-22 17:09:32 -04:00

49 lines
1.6 KiB
C

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _BCACHEFS_SYSFS_H_
#define _BCACHEFS_SYSFS_H_
#include <linux/sysfs.h>
#ifndef NO_BCACHEFS_SYSFS
struct attribute;
struct sysfs_ops;
extern struct attribute *bch2_fs_files[];
extern struct attribute *bch2_fs_counters_files[];
extern struct attribute *bch2_fs_internal_files[];
extern struct attribute *bch2_fs_opts_dir_files[];
extern struct attribute *bch2_fs_time_stats_files[];
extern struct attribute *bch2_dev_files[];
extern const struct sysfs_ops bch2_fs_sysfs_ops;
extern const struct sysfs_ops bch2_fs_counters_sysfs_ops;
extern const struct sysfs_ops bch2_fs_internal_sysfs_ops;
extern const struct sysfs_ops bch2_fs_opts_dir_sysfs_ops;
extern const struct sysfs_ops bch2_fs_time_stats_sysfs_ops;
extern const struct sysfs_ops bch2_dev_sysfs_ops;
int bch2_opts_create_sysfs_files(struct kobject *);
#else
static struct attribute *bch2_fs_files[] = {};
static struct attribute *bch2_fs_counters_files[] = {};
static struct attribute *bch2_fs_internal_files[] = {};
static struct attribute *bch2_fs_opts_dir_files[] = {};
static struct attribute *bch2_fs_time_stats_files[] = {};
static struct attribute *bch2_dev_files[] = {};
static const struct sysfs_ops bch2_fs_sysfs_ops;
static const struct sysfs_ops bch2_fs_counters_sysfs_ops;
static const struct sysfs_ops bch2_fs_internal_sysfs_ops;
static const struct sysfs_ops bch2_fs_opts_dir_sysfs_ops;
static const struct sysfs_ops bch2_fs_time_stats_sysfs_ops;
static const struct sysfs_ops bch2_dev_sysfs_ops;
static inline int bch2_opts_create_sysfs_files(struct kobject *kobj) { return 0; }
#endif /* NO_BCACHEFS_SYSFS */
#endif /* _BCACHEFS_SYSFS_H_ */