// 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 {
        __XBTS_lookup = 0,
        __XBTS_compare = 1,
        __XBTS_insrec = 2,
        __XBTS_delrec = 3,
        __XBTS_newroot = 4,
        __XBTS_killroot = 5,
        __XBTS_increment = 6,
        __XBTS_decrement = 7,
        __XBTS_lshift = 8,
        __XBTS_rshift = 9,
        __XBTS_split = 10,
        __XBTS_join = 11,
        __XBTS_alloc = 12,
        __XBTS_free = 13,
        __XBTS_moves = 14,

        __XBTS_MAX = 15,
};

/*
 * XFS global statistics
 */
struct __xfsstats {
        uint32_t                xs_allocx;
        uint32_t                xs_allocb;
        uint32_t                xs_freex;
        uint32_t                xs_freeb;
        uint32_t                xs_abt_lookup;
        uint32_t                xs_abt_compare;
        uint32_t                xs_abt_insrec;
        uint32_t                xs_abt_delrec;
        uint32_t                xs_blk_mapr;
        uint32_t                xs_blk_mapw;
        uint32_t                xs_blk_unmap;
        uint32_t                xs_add_exlist;
        uint32_t                xs_del_exlist;
        uint32_t                xs_look_exlist;
        uint32_t                xs_cmp_exlist;
        uint32_t                xs_bmbt_lookup;
        uint32_t                xs_bmbt_compare;
        uint32_t                xs_bmbt_insrec;
        uint32_t                xs_bmbt_delrec;
        uint32_t                xs_dir_lookup;
        uint32_t                xs_dir_create;
        uint32_t                xs_dir_remove;
        uint32_t                xs_dir_getdents;
        uint32_t                xs_trans_sync;
        uint32_t                xs_trans_async;
        uint32_t                xs_trans_empty;
        uint32_t                xs_ig_attempts;
        uint32_t                xs_ig_found;
        uint32_t                xs_ig_frecycle;
        uint32_t                xs_ig_missed;
        uint32_t                xs_ig_dup;
        uint32_t                xs_ig_reclaims;
        uint32_t                xs_ig_attrchg;
        uint32_t                xs_log_writes;
        uint32_t                xs_log_blocks;
        uint32_t                xs_log_noiclogs;
        uint32_t                xs_log_force;
        uint32_t                xs_log_force_sleep;
        uint32_t                xs_try_logspace;
        uint32_t                xs_sleep_logspace;
        uint32_t                xs_push_ail;
        uint32_t                xs_push_ail_success;
        uint32_t                xs_push_ail_pushbuf;
        uint32_t                xs_push_ail_pinned;
        uint32_t                xs_push_ail_locked;
        uint32_t                xs_push_ail_flushing;
        uint32_t                xs_push_ail_restarts;
        uint32_t                xs_push_ail_flush;
        uint32_t                xs_xstrat_quick;
        uint32_t                xs_xstrat_split;
        uint32_t                xs_write_calls;
        uint32_t                xs_read_calls;
        uint32_t                xs_attr_get;
        uint32_t                xs_attr_set;
        uint32_t                xs_attr_remove;
        uint32_t                xs_attr_list;
        uint32_t                xs_iflush_count;
        uint32_t                xs_icluster_flushcnt;
        uint32_t                xs_icluster_flushinode;
        uint32_t                xs_inodes_active;
        uint32_t                __unused_vn_alloc;
        uint32_t                __unused_vn_get;
        uint32_t                __unused_vn_hold;
        uint32_t                xs_inode_destroy;
        uint32_t                xs_inode_destroy2; /* same as xs_inode_destroy */
        uint32_t                xs_inode_mark_reclaimable;
        uint32_t                __unused_vn_free;
        uint32_t                xb_get;
        uint32_t                xb_create;
        uint32_t                xb_get_locked;
        uint32_t                xb_get_locked_waited;
        uint32_t                xb_busy_locked;
        uint32_t                xb_miss_locked;
        uint32_t                xb_page_retries;
        uint32_t                xb_page_found;
        uint32_t                xb_get_read;
/* Version 2 btree counters */
        uint32_t                xs_abtb_2[__XBTS_MAX];
        uint32_t                xs_abtc_2[__XBTS_MAX];
        uint32_t                xs_bmbt_2[__XBTS_MAX];
        uint32_t                xs_ibt_2[__XBTS_MAX];
        uint32_t                xs_fibt_2[__XBTS_MAX];
        uint32_t                xs_rmap_2[__XBTS_MAX];
        uint32_t                xs_refcbt_2[__XBTS_MAX];
        uint32_t                xs_rmap_mem_2[__XBTS_MAX];
        uint32_t                xs_rcbag_2[__XBTS_MAX];
        uint32_t                xs_rtrmap_2[__XBTS_MAX];
        uint32_t                xs_rtrmap_mem_2[__XBTS_MAX];
        uint32_t                xs_rtrefcbt_2[__XBTS_MAX];
        uint32_t                xs_qm_dqreclaims;
        uint32_t                xs_qm_dqreclaim_misses;
        uint32_t                xs_qm_dquot_dups;
        uint32_t                xs_qm_dqcachemisses;
        uint32_t                xs_qm_dqcachehits;
        uint32_t                xs_qm_dqwants;
        uint32_t                xs_qm_dquot;
        uint32_t                xs_qm_dquot_unused;
/* Zone GC counters */
        uint32_t                xs_gc_read_calls;
        uint32_t                xs_gc_write_calls;
        uint32_t                xs_gc_zone_reset_calls;
/* Metafile counters */
        uint32_t                xs_inodes_meta;
/* Extra precision counters */
        uint64_t                xs_xstrat_bytes;
        uint64_t                xs_write_bytes;
        uint64_t                xs_read_bytes;
        uint64_t                xs_defer_relog;
        uint64_t                xs_gc_bytes;
};

#define xfsstats_offset(f)      (offsetof(struct __xfsstats, f)/sizeof(uint32_t))

struct xfsstats {
        union {
                struct __xfsstats       s;
                uint32_t                a[xfsstats_offset(xs_qm_dquot)];
        };
};

/*
 * simple wrapper for getting the array index of s struct member offset
 */
#define XFS_STATS_CALC_INDEX(member)    \
        (offsetof(struct __xfsstats, member) / (int)sizeof(uint32_t))


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)                                    \
do {                                                            \
        per_cpu_ptr(xfsstats.xs_stats, current_cpu())->s.v++;   \
        per_cpu_ptr(mp->m_stats.xs_stats, current_cpu())->s.v++;        \
} while (0)

#define XFS_STATS_DEC(mp, v)                                    \
do {                                                            \
        per_cpu_ptr(xfsstats.xs_stats, current_cpu())->s.v--;   \
        per_cpu_ptr(mp->m_stats.xs_stats, current_cpu())->s.v--;        \
} while (0)

#define XFS_STATS_ADD(mp, v, inc)                                       \
do {                                                                    \
        per_cpu_ptr(xfsstats.xs_stats, current_cpu())->s.v += (inc);    \
        per_cpu_ptr(mp->m_stats.xs_stats, current_cpu())->s.v += (inc); \
} while (0)

#define XFS_STATS_INC_OFF(mp, off)                              \
do {                                                            \
        per_cpu_ptr(xfsstats.xs_stats, current_cpu())->a[off]++;        \
        per_cpu_ptr(mp->m_stats.xs_stats, current_cpu())->a[off]++;     \
} while (0)

#define XFS_STATS_DEC_OFF(mp, off)                                      \
do {                                                            \
        per_cpu_ptr(xfsstats.xs_stats, current_cpu())->a[off];  \
        per_cpu_ptr(mp->m_stats.xs_stats, current_cpu())->a[off];       \
} while (0)

#define XFS_STATS_ADD_OFF(mp, off, inc)                                 \
do {                                                                    \
        per_cpu_ptr(xfsstats.xs_stats, current_cpu())->a[off] += (inc); \
        per_cpu_ptr(mp->m_stats.xs_stats, current_cpu())->a[off] += (inc);      \
} while (0)

#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__ */