xref: /openbmc/linux/fs/nfsd/stats.h (revision 97a532c3)
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  
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  
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  
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  
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  
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  
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  
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  
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  
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
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