PM / yenta: Split resume into early and late parts (rev. 4)
[linux/fpc-iii.git] / fs / nfs / iostat.h
blobceda50aad73cc5a3bc93baeaaa7771ebd7a0f00f
1 /*
2 * linux/fs/nfs/iostat.h
4 * Declarations for NFS client per-mount statistics
6 * Copyright (C) 2005, 2006 Chuck Lever <cel@netapp.com>
8 */
10 #ifndef _NFS_IOSTAT
11 #define _NFS_IOSTAT
13 #include <linux/percpu.h>
14 #include <linux/cache.h>
15 #include <linux/nfs_iostat.h>
17 struct nfs_iostats {
18 unsigned long long bytes[__NFSIOS_BYTESMAX];
19 #ifdef CONFIG_NFS_FSCACHE
20 unsigned long long fscache[__NFSIOS_FSCACHEMAX];
21 #endif
22 unsigned long events[__NFSIOS_COUNTSMAX];
23 } ____cacheline_aligned;
25 static inline void nfs_inc_server_stats(const struct nfs_server *server,
26 enum nfs_stat_eventcounters stat)
28 struct nfs_iostats *iostats;
29 int cpu;
31 cpu = get_cpu();
32 iostats = per_cpu_ptr(server->io_stats, cpu);
33 iostats->events[stat]++;
34 put_cpu();
37 static inline void nfs_inc_stats(const struct inode *inode,
38 enum nfs_stat_eventcounters stat)
40 nfs_inc_server_stats(NFS_SERVER(inode), stat);
43 static inline void nfs_add_server_stats(const struct nfs_server *server,
44 enum nfs_stat_bytecounters stat,
45 unsigned long addend)
47 struct nfs_iostats *iostats;
48 int cpu;
50 cpu = get_cpu();
51 iostats = per_cpu_ptr(server->io_stats, cpu);
52 iostats->bytes[stat] += addend;
53 put_cpu();
56 static inline void nfs_add_stats(const struct inode *inode,
57 enum nfs_stat_bytecounters stat,
58 unsigned long addend)
60 nfs_add_server_stats(NFS_SERVER(inode), stat, addend);
63 #ifdef CONFIG_NFS_FSCACHE
64 static inline void nfs_add_fscache_stats(struct inode *inode,
65 enum nfs_stat_fscachecounters stat,
66 unsigned long addend)
68 struct nfs_iostats *iostats;
69 int cpu;
71 cpu = get_cpu();
72 iostats = per_cpu_ptr(NFS_SERVER(inode)->io_stats, cpu);
73 iostats->fscache[stat] += addend;
74 put_cpu();
76 #endif
78 static inline struct nfs_iostats *nfs_alloc_iostats(void)
80 return alloc_percpu(struct nfs_iostats);
83 static inline void nfs_free_iostats(struct nfs_iostats *stats)
85 if (stats != NULL)
86 free_percpu(stats);
89 #endif /* _NFS_IOSTAT */