| | 1 | /* |
| | 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 | * |
| | 8 | */ |
| | 9 | |
| | 10 | #ifndef _NFS_IOSTAT |
| | 11 | #define _NFS_IOSTAT |
| | 12 | |
| | 13 | #include <linux/percpu.h> |
| | 14 | #include <linux/cache.h> |
| | 15 | #include <linux/nfs_iostat.h> |
| | 16 | |
| | 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; |
| | 24 | |
| | 25 | static inline void nfs_inc_server_stats(const struct nfs_server *server, |
| | 26 | enum nfs_stat_eventcounters stat) |
| | 27 | { |
| | 28 | this_cpu_inc(server->io_stats->events[stat]); |
| | 29 | } |
| | 30 | |
| | 31 | static inline void nfs_inc_stats(const struct inode *inode, |
| | 32 | enum nfs_stat_eventcounters stat) |
| | 33 | { |
| | 34 | nfs_inc_server_stats(NFS_SERVER(inode), stat); |
| | 35 | } |
| | 36 | |
| | 37 | static inline void nfs_add_server_stats(const struct nfs_server *server, |
| | 38 | enum nfs_stat_bytecounters stat, |
| | 39 | long addend) |
| | 40 | { |
| | 41 | this_cpu_add(server->io_stats->bytes[stat], addend); |
| | 42 | } |
| | 43 | |
| | 44 | static inline void nfs_add_stats(const struct inode *inode, |
| | 45 | enum nfs_stat_bytecounters stat, |
| | 46 | long addend) |
| | 47 | { |
| | 48 | nfs_add_server_stats(NFS_SERVER(inode), stat, addend); |
| | 49 | } |
| | 50 | |
| | 51 | #ifdef CONFIG_NFS_FSCACHE |
| | 52 | static inline void nfs_add_fscache_stats(struct inode *inode, |
| | 53 | enum nfs_stat_fscachecounters stat, |
| | 54 | long addend) |
| | 55 | { |
| | 56 | this_cpu_add(NFS_SERVER(inode)->io_stats->fscache[stat], addend); |
| | 57 | } |
| | 58 | #endif |
| | 59 | |
| | 60 | static inline struct nfs_iostats __percpu *nfs_alloc_iostats(void) |
| | 61 | { |
| | 62 | return alloc_percpu(struct nfs_iostats); |
| | 63 | } |
| | 64 | |
| | 65 | static inline void nfs_free_iostats(struct nfs_iostats __percpu *stats) |
| | 66 | { |
| | 67 | if (stats != NULL) |
| | 68 | free_percpu(stats); |
| | 69 | } |
| | 70 | |
| | 71 | #endif /* _NFS_IOSTAT */ |
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