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