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