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Chuck Leverd9ef5a82006-03-20 13:44:13 -05001/*
2 * linux/fs/nfs/iostat.h
3 *
4 * Declarations for NFS client per-mount statistics
5 *
6 * Copyright (C) 2005, 2006 Chuck Lever <cel@netapp.com>
7 *
Chuck Leverd9ef5a82006-03-20 13:44:13 -05008 */
9
10#ifndef _NFS_IOSTAT
11#define _NFS_IOSTAT
12
Chuck Leverd9ef5a82006-03-20 13:44:13 -050013#include <linux/percpu.h>
14#include <linux/cache.h>
Chuck Lever34e8f922008-06-12 12:32:25 -040015#include <linux/nfs_iostat.h>
Chuck Leverd9ef5a82006-03-20 13:44:13 -050016
17struct nfs_iostats {
18 unsigned long long bytes[__NFSIOS_BYTESMAX];
David Howells6a510912009-04-03 16:42:43 +010019#ifdef CONFIG_NFS_FSCACHE
20 unsigned long long fscache[__NFSIOS_FSCACHEMAX];
21#endif
Chuck Leverd9ef5a82006-03-20 13:44:13 -050022 unsigned long events[__NFSIOS_COUNTSMAX];
23} ____cacheline_aligned;
24
Trond Myklebust2e96d282008-06-11 16:42:05 -040025static inline void nfs_inc_server_stats(const struct nfs_server *server,
Chuck Lever34e8f922008-06-12 12:32:25 -040026 enum nfs_stat_eventcounters stat)
Chuck Leverd9ef5a82006-03-20 13:44:13 -050027{
Christoph Lameterfce22842009-10-03 19:48:22 +090028 this_cpu_inc(server->io_stats->events[stat]);
Chuck Leverd9ef5a82006-03-20 13:44:13 -050029}
30
Trond Myklebust2e96d282008-06-11 16:42:05 -040031static inline void nfs_inc_stats(const struct inode *inode,
Chuck Lever34e8f922008-06-12 12:32:25 -040032 enum nfs_stat_eventcounters stat)
Chuck Lever006ea732006-03-20 13:44:14 -050033{
34 nfs_inc_server_stats(NFS_SERVER(inode), stat);
35}
36
Trond Myklebust2e96d282008-06-11 16:42:05 -040037static inline void nfs_add_server_stats(const struct nfs_server *server,
Chuck Lever34e8f922008-06-12 12:32:25 -040038 enum nfs_stat_bytecounters stat,
39 unsigned long addend)
Chuck Lever006ea732006-03-20 13:44:14 -050040{
Christoph Lameterfce22842009-10-03 19:48:22 +090041 this_cpu_add(server->io_stats->bytes[stat], addend);
Chuck Lever006ea732006-03-20 13:44:14 -050042}
43
Trond Myklebust2e96d282008-06-11 16:42:05 -040044static inline void nfs_add_stats(const struct inode *inode,
Chuck Lever34e8f922008-06-12 12:32:25 -040045 enum nfs_stat_bytecounters stat,
46 unsigned long addend)
Chuck Leverd9ef5a82006-03-20 13:44:13 -050047{
Chuck Lever006ea732006-03-20 13:44:14 -050048 nfs_add_server_stats(NFS_SERVER(inode), stat, addend);
Chuck Leverd9ef5a82006-03-20 13:44:13 -050049}
50
David Howells6a510912009-04-03 16:42:43 +010051#ifdef CONFIG_NFS_FSCACHE
52static inline void nfs_add_fscache_stats(struct inode *inode,
53 enum nfs_stat_fscachecounters stat,
54 unsigned long addend)
55{
Christoph Lameterfce22842009-10-03 19:48:22 +090056 this_cpu_add(NFS_SERVER(inode)->io_stats->fscache[stat], addend);
David Howells6a510912009-04-03 16:42:43 +010057}
58#endif
59
Chuck Leverd9ef5a82006-03-20 13:44:13 -050060static inline struct nfs_iostats *nfs_alloc_iostats(void)
61{
62 return alloc_percpu(struct nfs_iostats);
63}
64
65static inline void nfs_free_iostats(struct nfs_iostats *stats)
66{
Trond Myklebust01d0ae82006-03-20 13:44:48 -050067 if (stats != NULL)
68 free_percpu(stats);
Chuck Leverd9ef5a82006-03-20 13:44:13 -050069}
70
Chuck Lever34e8f922008-06-12 12:32:25 -040071#endif /* _NFS_IOSTAT */