1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * Statistics for NFS server.
 4 *
 5 * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
 6 */
 7#ifndef _NFSD_STATS_H
 8#define _NFSD_STATS_H
 9
10#include <uapi/linux/nfsd/stats.h>
11#include <linux/percpu_counter.h>
12
13void nfsd_proc_stat_init(struct net *net);
14void nfsd_proc_stat_shutdown(struct net *net);
15
16static inline void nfsd_stats_rc_hits_inc(struct nfsd_net *nn)
17{
18	percpu_counter_inc(&nn->counter[NFSD_STATS_RC_HITS]);
19}
20
21static inline void nfsd_stats_rc_misses_inc(struct nfsd_net *nn)
22{
23	percpu_counter_inc(&nn->counter[NFSD_STATS_RC_MISSES]);
24}
25
26static inline void nfsd_stats_rc_nocache_inc(struct nfsd_net *nn)
27{
28	percpu_counter_inc(&nn->counter[NFSD_STATS_RC_NOCACHE]);
29}
30
31static inline void nfsd_stats_fh_stale_inc(struct nfsd_net *nn,
32					   struct svc_export *exp)
33{
34	percpu_counter_inc(&nn->counter[NFSD_STATS_FH_STALE]);
35	if (exp && exp->ex_stats)
36		percpu_counter_inc(&exp->ex_stats->counter[EXP_STATS_FH_STALE]);
37}
38
39static inline void nfsd_stats_io_read_add(struct nfsd_net *nn,
40					  struct svc_export *exp, s64 amount)
41{
42	percpu_counter_add(&nn->counter[NFSD_STATS_IO_READ], amount);
43	if (exp && exp->ex_stats)
44		percpu_counter_add(&exp->ex_stats->counter[EXP_STATS_IO_READ], amount);
45}
46
47static inline void nfsd_stats_io_write_add(struct nfsd_net *nn,
48					   struct svc_export *exp, s64 amount)
49{
50	percpu_counter_add(&nn->counter[NFSD_STATS_IO_WRITE], amount);
51	if (exp && exp->ex_stats)
52		percpu_counter_add(&exp->ex_stats->counter[EXP_STATS_IO_WRITE], amount);
53}
54
55static inline void nfsd_stats_payload_misses_inc(struct nfsd_net *nn)
56{
57	percpu_counter_inc(&nn->counter[NFSD_STATS_PAYLOAD_MISSES]);
58}
59
60static inline void nfsd_stats_drc_mem_usage_add(struct nfsd_net *nn, s64 amount)
61{
62	percpu_counter_add(&nn->counter[NFSD_STATS_DRC_MEM_USAGE], amount);
63}
64
65static inline void nfsd_stats_drc_mem_usage_sub(struct nfsd_net *nn, s64 amount)
66{
67	percpu_counter_sub(&nn->counter[NFSD_STATS_DRC_MEM_USAGE], amount);
68}
69
70#ifdef CONFIG_NFSD_V4
71static inline void nfsd_stats_wdeleg_getattr_inc(struct nfsd_net *nn)
72{
73	percpu_counter_inc(&nn->counter[NFSD_STATS_WDELEG_GETATTR]);
74}
75#endif
76#endif /* _NFSD_STATS_H */