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/*

 * linux/include/linux/nfsd/stats.h

 *

 * Statistics for NFS server.

 *

 * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>

 */

#ifndef LINUX_NFSD_STATS_H

#define LINUX_NFSD_STATS_H

#include <linux/nfs4.h>

struct nfsd_stats {

        unsigned int    rchits;         /* repcache hits */

        unsigned int    rcmisses;       /* repcache hits */

        unsigned int    rcnocache;      /* uncached reqs */

        unsigned int    fh_stale;       /* FH stale error */

        unsigned int    fh_lookup;      /* dentry cached */

        unsigned int    fh_anon;        /* anon file dentry returned */

        unsigned int    fh_nocache_dir; /* filehandle not found in dcache */

        unsigned int    fh_nocache_nondir;      /* filehandle not found in dcache */

        unsigned int    io_read;        /* bytes returned to read requests */

        unsigned int    io_write;       /* bytes passed in write requests */

        unsigned int    th_cnt;         /* number of available threads */

        unsigned int    th_usage[10];   /* number of ticks during which n perdeciles

                                         * of available threads were in use */

        unsigned int    th_fullcnt;     /* number of times last free thread was used */

        unsigned int    ra_size;        /* size of ra cache */

        unsigned int    ra_depth[11];   /* number of times ra entry was found that deep

                                         * in the cache (10percentiles). [10] = not found */

#ifdef CONFIG_NFSD_V4

        unsigned int    nfs4_opcount[LAST_NFS4_OP + 1]; /* count of individual nfsv4 operations */

#endif

};

/* thread usage wraps very million seconds (approx one fortnight) */

#define NFSD_USAGE_WRAP (HZ*1000000)

#ifdef __KERNEL__

extern struct nfsd_stats        nfsdstats;

extern struct svc_stat          nfsd_svcstats;

void    nfsd_stat_init(void);

void    nfsd_stat_shutdown(void);

#endif /* __KERNEL__ */

#endif /* LINUX_NFSD_STATS_H */