/* SPDX-License-Identifier: GPL-2.0 */ /* * Statistics for NFS server. * * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de> */ #ifndef _NFSD_STATS_H #define _NFSD_STATS_H #include <uapi/linux/nfsd/stats.h> #include <linux/percpu_counter.h> enum { NFSD_STATS_RC_HITS, /* repcache hits */ NFSD_STATS_RC_MISSES, /* repcache misses */ NFSD_STATS_RC_NOCACHE, /* uncached reqs */ NFSD_STATS_FH_STALE, /* FH stale error */ NFSD_STATS_IO_READ, /* bytes returned to read requests */ NFSD_STATS_IO_WRITE, /* bytes passed in write requests */ #ifdef CONFIG_NFSD_V4 NFSD_STATS_FIRST_NFS4_OP, /* count of individual nfsv4 operations */ NFSD_STATS_LAST_NFS4_OP = NFSD_STATS_FIRST_NFS4_OP + LAST_NFS4_OP, #define NFSD_STATS_NFS4_OP(op) (NFSD_STATS_FIRST_NFS4_OP + (op)) NFSD_STATS_WDELEG_GETATTR, /* count of getattr conflict with wdeleg */ #endif NFSD_STATS_COUNTERS_NUM }; struct nfsd_stats { struct percpu_counter counter[NFSD_STATS_COUNTERS_NUM]; atomic_t th_cnt; /* number of available threads */ }; extern struct nfsd_stats nfsdstats; extern struct svc_stat nfsd_svcstats; int nfsd_percpu_counters_init(struct percpu_counter counters[], int num); void nfsd_percpu_counters_reset(struct percpu_counter counters[], int num); void nfsd_percpu_counters_destroy(struct percpu_counter counters[], int num); int nfsd_stat_init(void); void nfsd_stat_shutdown(void); static inline void nfsd_stats_rc_hits_inc(void) { percpu_counter_inc(&nfsdstats.counter[NFSD_STATS_RC_HITS]); } static inline void nfsd_stats_rc_misses_inc(void) { percpu_counter_inc(&nfsdstats.counter[NFSD_STATS_RC_MISSES]); } static inline void nfsd_stats_rc_nocache_inc(void) { percpu_counter_inc(&nfsdstats.counter[NFSD_STATS_RC_NOCACHE]); } static inline void nfsd_stats_fh_stale_inc(struct svc_export *exp) { percpu_counter_inc(&nfsdstats.counter[NFSD_STATS_FH_STALE]); if (exp) percpu_counter_inc(&exp->ex_stats.counter[EXP_STATS_FH_STALE]); } static inline void nfsd_stats_io_read_add(struct svc_export *exp, s64 amount) { percpu_counter_add(&nfsdstats.counter[NFSD_STATS_IO_READ], amount); if (exp) percpu_counter_add(&exp->ex_stats.counter[EXP_STATS_IO_READ], amount); } static inline void nfsd_stats_io_write_add(struct svc_export *exp, s64 amount) { percpu_counter_add(&nfsdstats.counter[NFSD_STATS_IO_WRITE], amount); if (exp) percpu_counter_add(&exp->ex_stats.counter[EXP_STATS_IO_WRITE], amount); } static inline void nfsd_stats_payload_misses_inc(struct nfsd_net *nn) { percpu_counter_inc(&nn->counter[NFSD_NET_PAYLOAD_MISSES]); } static inline void nfsd_stats_drc_mem_usage_add(struct nfsd_net *nn, s64 amount) { percpu_counter_add(&nn->counter[NFSD_NET_DRC_MEM_USAGE], amount); } static inline void nfsd_stats_drc_mem_usage_sub(struct nfsd_net *nn, s64 amount) { percpu_counter_sub(&nn->counter[NFSD_NET_DRC_MEM_USAGE], amount); } #ifdef CONFIG_NFSD_V4 static inline void nfsd_stats_wdeleg_getattr_inc(void) { percpu_counter_inc(&nfsdstats.counter[NFSD_STATS_WDELEG_GETATTR]); } #endif #endif /* _NFSD_STATS_H */