| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | /* |
| 3 | * linux/fs/nfs/iostat.h |
| 4 | * |
| 5 | * Declarations for NFS client per-mount statistics |
| 6 | * |
| 7 | * Copyright (C) 2005, 2006 Chuck Lever <cel@netapp.com> |
| 8 | * |
| 9 | */ |
| 10 | |
| 11 | #ifndef _NFS_IOSTAT |
| 12 | #define _NFS_IOSTAT |
| 13 | |
| 14 | #include <linux/percpu.h> |
| 15 | #include <linux/cache.h> |
| 16 | #include <linux/nfs_iostat.h> |
| 17 | |
| 18 | struct nfs_iostats { |
| 19 | unsigned long long bytes[__NFSIOS_BYTESMAX]; |
| 20 | #ifdef CONFIG_NFS_FSCACHE |
| 21 | unsigned long long fscache[__NFSIOS_FSCACHEMAX]; |
| 22 | #endif |
| 23 | unsigned long events[__NFSIOS_COUNTSMAX]; |
| 24 | } ____cacheline_aligned; |
| 25 | |
| 26 | static inline void nfs_inc_server_stats(const struct nfs_server *server, |
| 27 | enum nfs_stat_eventcounters stat) |
| 28 | { |
| 29 | this_cpu_inc(server->io_stats->events[stat]); |
| 30 | } |
| 31 | |
| 32 | static inline void nfs_inc_stats(const struct inode *inode, |
| 33 | enum nfs_stat_eventcounters stat) |
| 34 | { |
| 35 | nfs_inc_server_stats(NFS_SERVER(inode), stat); |
| 36 | } |
| 37 | |
| 38 | static inline void nfs_add_server_stats(const struct nfs_server *server, |
| 39 | enum nfs_stat_bytecounters stat, |
| 40 | long addend) |
| 41 | { |
| 42 | this_cpu_add(server->io_stats->bytes[stat], addend); |
| 43 | } |
| 44 | |
| 45 | static inline void nfs_add_stats(const struct inode *inode, |
| 46 | enum nfs_stat_bytecounters stat, |
| 47 | long addend) |
| 48 | { |
| 49 | nfs_add_server_stats(NFS_SERVER(inode), stat, addend); |
| 50 | } |
| 51 | |
| 52 | #ifdef CONFIG_NFS_FSCACHE |
| 53 | static inline void nfs_add_fscache_stats(struct inode *inode, |
| 54 | enum nfs_stat_fscachecounters stat, |
| 55 | long addend) |
| 56 | { |
| 57 | this_cpu_add(NFS_SERVER(inode)->io_stats->fscache[stat], addend); |
| 58 | } |
| 59 | static inline void nfs_inc_fscache_stats(struct inode *inode, |
| 60 | enum nfs_stat_fscachecounters stat) |
| 61 | { |
| 62 | this_cpu_inc(NFS_SERVER(inode)->io_stats->fscache[stat]); |
| 63 | } |
| 64 | #endif |
| 65 | |
| 66 | static inline struct nfs_iostats __percpu *nfs_alloc_iostats(void) |
| 67 | { |
| 68 | return alloc_percpu(struct nfs_iostats); |
| 69 | } |
| 70 | |
| 71 | static inline void nfs_free_iostats(struct nfs_iostats __percpu *stats) |
| 72 | { |
| 73 | if (stats != NULL) |
| 74 | free_percpu(stats); |
| 75 | } |
| 76 | |
| 77 | #endif /* _NFS_IOSTAT */ |