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
13 int nfsd_percpu_counters_init(struct percpu_counter *counters, int num);
14 void nfsd_percpu_counters_reset(struct percpu_counter *counters, int num);
15 void nfsd_percpu_counters_destroy(struct percpu_counter *counters, int num);
16 int nfsd_stat_counters_init(struct nfsd_net *nn);
17 void nfsd_stat_counters_destroy(struct nfsd_net *nn);
18 void nfsd_proc_stat_init(struct net *net);
19 void nfsd_proc_stat_shutdown(struct net *net);
20
nfsd_stats_rc_hits_inc(struct nfsd_net * nn)21 static inline void nfsd_stats_rc_hits_inc(struct nfsd_net *nn)
22 {
23 percpu_counter_inc(&nn->counter[NFSD_STATS_RC_HITS]);
24 }
25
nfsd_stats_rc_misses_inc(struct nfsd_net * nn)26 static inline void nfsd_stats_rc_misses_inc(struct nfsd_net *nn)
27 {
28 percpu_counter_inc(&nn->counter[NFSD_STATS_RC_MISSES]);
29 }
30
nfsd_stats_rc_nocache_inc(struct nfsd_net * nn)31 static inline void nfsd_stats_rc_nocache_inc(struct nfsd_net *nn)
32 {
33 percpu_counter_inc(&nn->counter[NFSD_STATS_RC_NOCACHE]);
34 }
35
nfsd_stats_fh_stale_inc(struct nfsd_net * nn,struct svc_export * exp)36 static inline void nfsd_stats_fh_stale_inc(struct nfsd_net *nn,
37 struct svc_export *exp)
38 {
39 percpu_counter_inc(&nn->counter[NFSD_STATS_FH_STALE]);
40 if (exp && exp->ex_stats)
41 percpu_counter_inc(&exp->ex_stats->counter[EXP_STATS_FH_STALE]);
42 }
43
nfsd_stats_io_read_add(struct nfsd_net * nn,struct svc_export * exp,s64 amount)44 static inline void nfsd_stats_io_read_add(struct nfsd_net *nn,
45 struct svc_export *exp, s64 amount)
46 {
47 percpu_counter_add(&nn->counter[NFSD_STATS_IO_READ], amount);
48 if (exp && exp->ex_stats)
49 percpu_counter_add(&exp->ex_stats->counter[EXP_STATS_IO_READ], amount);
50 }
51
nfsd_stats_io_write_add(struct nfsd_net * nn,struct svc_export * exp,s64 amount)52 static inline void nfsd_stats_io_write_add(struct nfsd_net *nn,
53 struct svc_export *exp, s64 amount)
54 {
55 percpu_counter_add(&nn->counter[NFSD_STATS_IO_WRITE], amount);
56 if (exp && exp->ex_stats)
57 percpu_counter_add(&exp->ex_stats->counter[EXP_STATS_IO_WRITE], amount);
58 }
59
nfsd_stats_payload_misses_inc(struct nfsd_net * nn)60 static inline void nfsd_stats_payload_misses_inc(struct nfsd_net *nn)
61 {
62 percpu_counter_inc(&nn->counter[NFSD_STATS_PAYLOAD_MISSES]);
63 }
64
nfsd_stats_drc_mem_usage_add(struct nfsd_net * nn,s64 amount)65 static inline void nfsd_stats_drc_mem_usage_add(struct nfsd_net *nn, s64 amount)
66 {
67 percpu_counter_add(&nn->counter[NFSD_STATS_DRC_MEM_USAGE], amount);
68 }
69
nfsd_stats_drc_mem_usage_sub(struct nfsd_net * nn,s64 amount)70 static inline void nfsd_stats_drc_mem_usage_sub(struct nfsd_net *nn, s64 amount)
71 {
72 percpu_counter_sub(&nn->counter[NFSD_STATS_DRC_MEM_USAGE], amount);
73 }
74
75 #ifdef CONFIG_NFSD_V4
nfsd_stats_wdeleg_getattr_inc(struct nfsd_net * nn)76 static inline void nfsd_stats_wdeleg_getattr_inc(struct nfsd_net *nn)
77 {
78 percpu_counter_inc(&nn->counter[NFSD_STATS_WDELEG_GETATTR]);
79 }
80 #endif
81 #endif /* _NFSD_STATS_H */
82