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 nfs_inc_server_stats(const struct nfs_server * server,enum nfs_stat_eventcounters stat)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 nfs_inc_stats(const struct inode * inode,enum nfs_stat_eventcounters stat)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 nfs_add_server_stats(const struct nfs_server * server,enum nfs_stat_bytecounters stat,long addend)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 nfs_add_stats(const struct inode * inode,enum nfs_stat_bytecounters stat,long addend)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 nfs_add_fscache_stats(struct inode * inode,enum nfs_stat_fscachecounters stat,long addend)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 } nfs_inc_fscache_stats(struct inode * inode,enum nfs_stat_fscachecounters stat)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 nfs_alloc_iostats(void)66 static inline struct nfs_iostats __percpu *nfs_alloc_iostats(void) 67 { 68 return alloc_percpu(struct nfs_iostats); 69 } 70 nfs_free_iostats(struct nfs_iostats __percpu * stats)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 */ 78