cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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stats.h (2820B)

      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
     14enum {
     15	NFSD_STATS_RC_HITS,		/* repcache hits */
     16	NFSD_STATS_RC_MISSES,		/* repcache misses */
     17	NFSD_STATS_RC_NOCACHE,		/* uncached reqs */
     18	NFSD_STATS_FH_STALE,		/* FH stale error */
     19	NFSD_STATS_IO_READ,		/* bytes returned to read requests */
     20	NFSD_STATS_IO_WRITE,		/* bytes passed in write requests */
     21#ifdef CONFIG_NFSD_V4
     22	NFSD_STATS_FIRST_NFS4_OP,	/* count of individual nfsv4 operations */
     23	NFSD_STATS_LAST_NFS4_OP = NFSD_STATS_FIRST_NFS4_OP + LAST_NFS4_OP,
     24#define NFSD_STATS_NFS4_OP(op)	(NFSD_STATS_FIRST_NFS4_OP + (op))
     25#endif
     26	NFSD_STATS_COUNTERS_NUM
     27};
     28
     29struct nfsd_stats {
     30	struct percpu_counter	counter[NFSD_STATS_COUNTERS_NUM];
     31
     32	atomic_t	th_cnt;		/* number of available threads */
     33};
     34
     35extern struct nfsd_stats	nfsdstats;
     36
     37extern struct svc_stat		nfsd_svcstats;
     38
     39int nfsd_percpu_counters_init(struct percpu_counter counters[], int num);
     40void nfsd_percpu_counters_reset(struct percpu_counter counters[], int num);
     41void nfsd_percpu_counters_destroy(struct percpu_counter counters[], int num);
     42int nfsd_stat_init(void);
     43void nfsd_stat_shutdown(void);
     44
     45static inline void nfsd_stats_rc_hits_inc(void)
     46{
     47	percpu_counter_inc(&nfsdstats.counter[NFSD_STATS_RC_HITS]);
     48}
     49
     50static inline void nfsd_stats_rc_misses_inc(void)
     51{
     52	percpu_counter_inc(&nfsdstats.counter[NFSD_STATS_RC_MISSES]);
     53}
     54
     55static inline void nfsd_stats_rc_nocache_inc(void)
     56{
     57	percpu_counter_inc(&nfsdstats.counter[NFSD_STATS_RC_NOCACHE]);
     58}
     59
     60static inline void nfsd_stats_fh_stale_inc(struct svc_export *exp)
     61{
     62	percpu_counter_inc(&nfsdstats.counter[NFSD_STATS_FH_STALE]);
     63	if (exp)
     64		percpu_counter_inc(&exp->ex_stats.counter[EXP_STATS_FH_STALE]);
     65}
     66
     67static inline void nfsd_stats_io_read_add(struct svc_export *exp, s64 amount)
     68{
     69	percpu_counter_add(&nfsdstats.counter[NFSD_STATS_IO_READ], amount);
     70	if (exp)
     71		percpu_counter_add(&exp->ex_stats.counter[EXP_STATS_IO_READ], amount);
     72}
     73
     74static inline void nfsd_stats_io_write_add(struct svc_export *exp, s64 amount)
     75{
     76	percpu_counter_add(&nfsdstats.counter[NFSD_STATS_IO_WRITE], amount);
     77	if (exp)
     78		percpu_counter_add(&exp->ex_stats.counter[EXP_STATS_IO_WRITE], amount);
     79}
     80
     81static inline void nfsd_stats_payload_misses_inc(struct nfsd_net *nn)
     82{
     83	percpu_counter_inc(&nn->counter[NFSD_NET_PAYLOAD_MISSES]);
     84}
     85
     86static inline void nfsd_stats_drc_mem_usage_add(struct nfsd_net *nn, s64 amount)
     87{
     88	percpu_counter_add(&nn->counter[NFSD_NET_DRC_MEM_USAGE], amount);
     89}
     90
     91static inline void nfsd_stats_drc_mem_usage_sub(struct nfsd_net *nn, s64 amount)
     92{
     93	percpu_counter_sub(&nn->counter[NFSD_NET_DRC_MEM_USAGE], amount);
     94}
     95
     96#endif /* _NFSD_STATS_H */