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 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 */