1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * linux/fs/nfs/iostat.h
4 *
5 * Declarations for NFS client per-mount statistics
6 *
7 * Copyright (C) 2005, 2006 Chuck Lever <cel@netapp.com>
8 *
9 */
10
11 #ifndef _NFS_IOSTAT
12 #define _NFS_IOSTAT
13
14 #include <linux/percpu.h>
15 #include <linux/cache.h>
16 #include <linux/nfs_iostat.h>
17
18 struct nfs_iostats {
19 unsigned long long bytes[__NFSIOS_BYTESMAX];
20 #ifdef CONFIG_NFS_FSCACHE
21 unsigned long long fscache[__NFSIOS_FSCACHEMAX];
22 #endif
23 unsigned long events[__NFSIOS_COUNTSMAX];
24 } ____cacheline_aligned;
25
nfs_inc_server_stats(const struct nfs_server * server,enum nfs_stat_eventcounters stat)26 static inline void nfs_inc_server_stats(const struct nfs_server *server,
27 enum nfs_stat_eventcounters stat)
28 {
29 this_cpu_inc(server->io_stats->events[stat]);
30 }
31
nfs_inc_stats(const struct inode * inode,enum nfs_stat_eventcounters stat)32 static inline void nfs_inc_stats(const struct inode *inode,
33 enum nfs_stat_eventcounters stat)
34 {
35 nfs_inc_server_stats(NFS_SERVER(inode), stat);
36 }
37
nfs_add_server_stats(const struct nfs_server * server,enum nfs_stat_bytecounters stat,long addend)38 static inline void nfs_add_server_stats(const struct nfs_server *server,
39 enum nfs_stat_bytecounters stat,
40 long addend)
41 {
42 this_cpu_add(server->io_stats->bytes[stat], addend);
43 }
44
nfs_add_stats(const struct inode * inode,enum nfs_stat_bytecounters stat,long addend)45 static inline void nfs_add_stats(const struct inode *inode,
46 enum nfs_stat_bytecounters stat,
47 long addend)
48 {
49 nfs_add_server_stats(NFS_SERVER(inode), stat, addend);
50 }
51
52 #ifdef CONFIG_NFS_FSCACHE
nfs_add_fscache_stats(struct inode * inode,enum nfs_stat_fscachecounters stat,long addend)53 static inline void nfs_add_fscache_stats(struct inode *inode,
54 enum nfs_stat_fscachecounters stat,
55 long addend)
56 {
57 this_cpu_add(NFS_SERVER(inode)->io_stats->fscache[stat], addend);
58 }
nfs_inc_fscache_stats(struct inode * inode,enum nfs_stat_fscachecounters stat)59 static inline void nfs_inc_fscache_stats(struct inode *inode,
60 enum nfs_stat_fscachecounters stat)
61 {
62 this_cpu_inc(NFS_SERVER(inode)->io_stats->fscache[stat]);
63 }
64 #endif
65
nfs_alloc_iostats(void)66 static inline struct nfs_iostats __percpu *nfs_alloc_iostats(void)
67 {
68 return alloc_percpu(struct nfs_iostats);
69 }
70
nfs_free_iostats(struct nfs_iostats __percpu * stats)71 static inline void nfs_free_iostats(struct nfs_iostats __percpu *stats)
72 {
73 if (stats != NULL)
74 free_percpu(stats);
75 }
76
77 #endif /* _NFS_IOSTAT */
78