| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 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 */ |