fs/nfsd/stats.h

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