aboutsummaryrefslogtreecommitdiff
path: root/fs/nfsd/stats.h
blob: 9b43dc3d999139c765d41d935953ae6ac42d39d3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Statistics for NFS server.
 *
 * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
 */
#ifndef _NFSD_STATS_H
#define _NFSD_STATS_H

#include <uapi/linux/nfsd/stats.h>
#include <linux/percpu_counter.h>


enum {
	NFSD_STATS_RC_HITS,		/* repcache hits */
	NFSD_STATS_RC_MISSES,		/* repcache misses */
	NFSD_STATS_RC_NOCACHE,		/* uncached reqs */
	NFSD_STATS_FH_STALE,		/* FH stale error */
	NFSD_STATS_IO_READ,		/* bytes returned to read requests */
	NFSD_STATS_IO_WRITE,		/* bytes passed in write requests */
#ifdef CONFIG_NFSD_V4
	NFSD_STATS_FIRST_NFS4_OP,	/* count of individual nfsv4 operations */
	NFSD_STATS_LAST_NFS4_OP = NFSD_STATS_FIRST_NFS4_OP + LAST_NFS4_OP,
#define NFSD_STATS_NFS4_OP(op)	(NFSD_STATS_FIRST_NFS4_OP + (op))
#endif
	NFSD_STATS_COUNTERS_NUM
};

struct nfsd_stats {
	struct percpu_counter	counter[NFSD_STATS_COUNTERS_NUM];

	atomic_t	th_cnt;		/* number of available threads */
};

extern struct nfsd_stats	nfsdstats;

extern struct svc_stat		nfsd_svcstats;

int nfsd_percpu_counters_init(struct percpu_counter counters[], int num);
void nfsd_percpu_counters_reset(struct percpu_counter counters[], int num);
void nfsd_percpu_counters_destroy(struct percpu_counter counters[], int num);
int nfsd_stat_init(void);
void nfsd_stat_shutdown(void);

static inline void nfsd_stats_rc_hits_inc(void)
{
	percpu_counter_inc(&nfsdstats.counter[NFSD_STATS_RC_HITS]);
}

static inline void nfsd_stats_rc_misses_inc(void)
{
	percpu_counter_inc(&nfsdstats.counter[NFSD_STATS_RC_MISSES]);
}

static inline void nfsd_stats_rc_nocache_inc(void)
{
	percpu_counter_inc(&nfsdstats.counter[NFSD_STATS_RC_NOCACHE]);
}

static inline void nfsd_stats_fh_stale_inc(struct svc_export *exp)
{
	percpu_counter_inc(&nfsdstats.counter[NFSD_STATS_FH_STALE]);
	if (exp)
		percpu_counter_inc(&exp->ex_stats.counter[EXP_STATS_FH_STALE]);
}

static inline void nfsd_stats_io_read_add(struct svc_export *exp, s64 amount)
{
	percpu_counter_add(&nfsdstats.counter[NFSD_STATS_IO_READ], amount);
	if (exp)
		percpu_counter_add(&exp->ex_stats.counter[EXP_STATS_IO_READ], amount);
}

static inline void nfsd_stats_io_write_add(struct svc_export *exp, s64 amount)
{
	percpu_counter_add(&nfsdstats.counter[NFSD_STATS_IO_WRITE], amount);
	if (exp)
		percpu_counter_add(&exp->ex_stats.counter[EXP_STATS_IO_WRITE], amount);
}

static inline void nfsd_stats_payload_misses_inc(struct nfsd_net *nn)
{
	percpu_counter_inc(&nn->counter[NFSD_NET_PAYLOAD_MISSES]);
}

static inline void nfsd_stats_drc_mem_usage_add(struct nfsd_net *nn, s64 amount)
{
	percpu_counter_add(&nn->counter[NFSD_NET_DRC_MEM_USAGE], amount);
}

static inline void nfsd_stats_drc_mem_usage_sub(struct nfsd_net *nn, s64 amount)
{
	percpu_counter_sub(&nn->counter[NFSD_NET_DRC_MEM_USAGE], amount);
}

#endif /* _NFSD_STATS_H */