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 | |
14 | enum { |
15 | NFSD_STATS_RC_HITS, /* repcache hits */ |
16 | NFSD_STATS_RC_MISSES, /* repcache misses */ |
17 | NFSD_STATS_RC_NOCACHE, /* uncached reqs */ |
18 | NFSD_STATS_FH_STALE, /* FH stale error */ |
19 | NFSD_STATS_IO_READ, /* bytes returned to read requests */ |
20 | NFSD_STATS_IO_WRITE, /* bytes passed in write requests */ |
21 | #ifdef CONFIG_NFSD_V4 |
22 | NFSD_STATS_FIRST_NFS4_OP, /* count of individual nfsv4 operations */ |
23 | NFSD_STATS_LAST_NFS4_OP = NFSD_STATS_FIRST_NFS4_OP + LAST_NFS4_OP, |
24 | #define NFSD_STATS_NFS4_OP(op) (NFSD_STATS_FIRST_NFS4_OP + (op)) |
25 | NFSD_STATS_WDELEG_GETATTR, /* count of getattr conflict with wdeleg */ |
26 | #endif |
27 | NFSD_STATS_COUNTERS_NUM |
28 | }; |
29 | |
30 | struct nfsd_stats { |
31 | struct percpu_counter counter[NFSD_STATS_COUNTERS_NUM]; |
32 | |
33 | atomic_t th_cnt; /* number of available threads */ |
34 | }; |
35 | |
36 | extern struct nfsd_stats nfsdstats; |
37 | |
38 | extern struct svc_stat nfsd_svcstats; |
39 | |
40 | int nfsd_percpu_counters_init(struct percpu_counter *counters, int num); |
41 | void nfsd_percpu_counters_reset(struct percpu_counter *counters, int num); |
42 | void nfsd_percpu_counters_destroy(struct percpu_counter *counters, int num); |
43 | int nfsd_stat_init(void); |
44 | void nfsd_stat_shutdown(void); |
45 | |
46 | static inline void nfsd_stats_rc_hits_inc(void) |
47 | { |
48 | percpu_counter_inc(fbc: &nfsdstats.counter[NFSD_STATS_RC_HITS]); |
49 | } |
50 | |
51 | static inline void nfsd_stats_rc_misses_inc(void) |
52 | { |
53 | percpu_counter_inc(fbc: &nfsdstats.counter[NFSD_STATS_RC_MISSES]); |
54 | } |
55 | |
56 | static inline void nfsd_stats_rc_nocache_inc(void) |
57 | { |
58 | percpu_counter_inc(fbc: &nfsdstats.counter[NFSD_STATS_RC_NOCACHE]); |
59 | } |
60 | |
61 | static inline void nfsd_stats_fh_stale_inc(struct svc_export *exp) |
62 | { |
63 | percpu_counter_inc(fbc: &nfsdstats.counter[NFSD_STATS_FH_STALE]); |
64 | if (exp && exp->ex_stats) |
65 | percpu_counter_inc(fbc: &exp->ex_stats->counter[EXP_STATS_FH_STALE]); |
66 | } |
67 | |
68 | static inline void nfsd_stats_io_read_add(struct svc_export *exp, s64 amount) |
69 | { |
70 | percpu_counter_add(fbc: &nfsdstats.counter[NFSD_STATS_IO_READ], amount); |
71 | if (exp && exp->ex_stats) |
72 | percpu_counter_add(fbc: &exp->ex_stats->counter[EXP_STATS_IO_READ], amount); |
73 | } |
74 | |
75 | static inline void nfsd_stats_io_write_add(struct svc_export *exp, s64 amount) |
76 | { |
77 | percpu_counter_add(fbc: &nfsdstats.counter[NFSD_STATS_IO_WRITE], amount); |
78 | if (exp && exp->ex_stats) |
79 | percpu_counter_add(fbc: &exp->ex_stats->counter[EXP_STATS_IO_WRITE], amount); |
80 | } |
81 | |
82 | static inline void nfsd_stats_payload_misses_inc(struct nfsd_net *nn) |
83 | { |
84 | percpu_counter_inc(fbc: &nn->counter[NFSD_NET_PAYLOAD_MISSES]); |
85 | } |
86 | |
87 | static inline void nfsd_stats_drc_mem_usage_add(struct nfsd_net *nn, s64 amount) |
88 | { |
89 | percpu_counter_add(fbc: &nn->counter[NFSD_NET_DRC_MEM_USAGE], amount); |
90 | } |
91 | |
92 | static inline void nfsd_stats_drc_mem_usage_sub(struct nfsd_net *nn, s64 amount) |
93 | { |
94 | percpu_counter_sub(fbc: &nn->counter[NFSD_NET_DRC_MEM_USAGE], amount); |
95 | } |
96 | |
97 | #ifdef CONFIG_NFSD_V4 |
98 | static inline void nfsd_stats_wdeleg_getattr_inc(void) |
99 | { |
100 | percpu_counter_inc(fbc: &nfsdstats.counter[NFSD_STATS_WDELEG_GETATTR]); |
101 | } |
102 | #endif |
103 | #endif /* _NFSD_STATS_H */ |
104 | |