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1/*
2 * linux/include/linux/nfsd/stats.h
3 *
4 * Statistics for NFS server.
5 *
6 * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
7 */
8
9#ifndef LINUX_NFSD_STATS_H
10#define LINUX_NFSD_STATS_H
11
12#include <linux/nfs4.h>
13
14/* thread usage wraps very million seconds (approx one fortnight) */
15#define NFSD_USAGE_WRAP (HZ*1000000)
16
17#ifdef __KERNEL__
18
19struct nfsd_stats {
20 unsigned int rchits; /* repcache hits */
21 unsigned int rcmisses; /* repcache hits */
22 unsigned int rcnocache; /* uncached reqs */
23 unsigned int fh_stale; /* FH stale error */
24 unsigned int fh_lookup; /* dentry cached */
25 unsigned int fh_anon; /* anon file dentry returned */
26 unsigned int fh_nocache_dir; /* filehandle not found in dcache */
27 unsigned int fh_nocache_nondir; /* filehandle not found in dcache */
28 unsigned int io_read; /* bytes returned to read requests */
29 unsigned int io_write; /* bytes passed in write requests */
30 unsigned int th_cnt; /* number of available threads */
31 unsigned int th_usage[10]; /* number of ticks during which n perdeciles
32 * of available threads were in use */
33 unsigned int th_fullcnt; /* number of times last free thread was used */
34 unsigned int ra_size; /* size of ra cache */
35 unsigned int ra_depth[11]; /* number of times ra entry was found that deep
36 * in the cache (10percentiles). [10] = not found */
37#ifdef CONFIG_NFSD_V4
38 unsigned int nfs4_opcount[LAST_NFS4_OP + 1]; /* count of individual nfsv4 operations */
39#endif
40
41};
42
43
44extern struct nfsd_stats nfsdstats;
45extern struct svc_stat nfsd_svcstats;
46
47void nfsd_stat_init(void);
48void nfsd_stat_shutdown(void);
49
50#endif /* __KERNEL__ */
51#endif /* LINUX_NFSD_STATS_H */