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