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