Subversion Repositories shark

/*
 * linux/include/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

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 */
};

/* 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 */