projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| d9ef5a8c CL |
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 | * | |
| d9ef5a8c CL |
8 | */ |
| 9 | ||
| 10 | #ifndef _NFS_IOSTAT | |
| 11 | #define _NFS_IOSTAT | |
| 12 | ||
| d9ef5a8c CL |
13 | #include <linux/percpu.h> |
| 14 | #include <linux/cache.h> | |
| 34e8f928 | 15 | #include <linux/nfs_iostat.h> |
| d9ef5a8c CL |
16 | |
| 17 | struct nfs_iostats { | |
| 18 | unsigned long long bytes[__NFSIOS_BYTESMAX]; | |
| 6a51091d DH |
19 | #ifdef CONFIG_NFS_FSCACHE |
| 20 | unsigned long long fscache[__NFSIOS_FSCACHEMAX]; | |
| 21 | #endif | |
| d9ef5a8c CL |
22 | unsigned long events[__NFSIOS_COUNTSMAX]; |
| 23 | } ____cacheline_aligned; | |
| 24 | ||
| 2e96d286 | 25 | static inline void nfs_inc_server_stats(const struct nfs_server *server, |
| 34e8f928 | 26 | enum nfs_stat_eventcounters stat) |
| d9ef5a8c CL |
27 | { |
| 28 | struct nfs_iostats *iostats; | |
| 29 | int cpu; | |
| 30 | ||
| 31 | cpu = get_cpu(); | |
| 006ea73e | 32 | iostats = per_cpu_ptr(server->io_stats, cpu); |
| 34e8f928 | 33 | iostats->events[stat]++; |
| 8b0b1db0 | 34 | put_cpu(); |
| d9ef5a8c CL |
35 | } |
| 36 | ||
| 2e96d286 | 37 | static inline void nfs_inc_stats(const struct inode *inode, |
| 34e8f928 | 38 | enum nfs_stat_eventcounters stat) |
| 006ea73e CL |
39 | { |
| 40 | nfs_inc_server_stats(NFS_SERVER(inode), stat); | |
| 41 | } | |
| 42 | ||
| 2e96d286 | 43 | static inline void nfs_add_server_stats(const struct nfs_server *server, |
| 34e8f928 CL |
44 | enum nfs_stat_bytecounters stat, |
| 45 | unsigned long addend) | |
| d9ef5a8c CL |
46 | { |
| 47 | struct nfs_iostats *iostats; | |
| 48 | int cpu; | |
| 49 | ||
| 50 | cpu = get_cpu(); | |
| 006ea73e | 51 | iostats = per_cpu_ptr(server->io_stats, cpu); |
| d9ef5a8c | 52 | iostats->bytes[stat] += addend; |
| 8b0b1db0 | 53 | put_cpu(); |
| d9ef5a8c CL |
54 | } |
| 55 | ||
| 2e96d286 | 56 | static inline void nfs_add_stats(const struct inode *inode, |
| 34e8f928 CL |
57 | enum nfs_stat_bytecounters stat, |
| 58 | unsigned long addend) | |
| 006ea73e CL |
59 | { |
| 60 | nfs_add_server_stats(NFS_SERVER(inode), stat, addend); | |
| 61 | } | |
| 62 | ||
| 6a51091d DH |
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) | |
| 67 | { | |
| 68 | struct nfs_iostats *iostats; | |
| 69 | int cpu; | |
| 70 | ||
| 71 | cpu = get_cpu(); | |
| 72 | iostats = per_cpu_ptr(NFS_SERVER(inode)->io_stats, cpu); | |
| 73 | iostats->fscache[stat] += addend; | |
| 8b0b1db0 | 74 | put_cpu(); |
| 6a51091d DH |
75 | } |
| 76 | #endif | |
| 77 | ||
| d9ef5a8c CL |
78 | static inline struct nfs_iostats *nfs_alloc_iostats(void) |
| 79 | { | |
| 80 | return alloc_percpu(struct nfs_iostats); | |
| 81 | } | |
| 82 | ||
| 83 | static inline void nfs_free_iostats(struct nfs_iostats *stats) | |
| 84 | { | |
| 01d0ae8b TM |
85 | if (stats != NULL) |
| 86 | free_percpu(stats); | |
| d9ef5a8c CL |
87 | } |
| 88 | ||
| 34e8f928 | 89 | #endif /* _NFS_IOSTAT */ |