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 18struct nfs_iostats { 19 unsigned long long bytes[__NFSIOS_BYTESMAX]; 20 unsigned long events[__NFSIOS_COUNTSMAX]; 21} ____cacheline_aligned; 22 23static inline void nfs_inc_server_stats(const struct nfs_server *server, 24 enum nfs_stat_eventcounters stat) 25{ 26 this_cpu_inc(server->io_stats->events[stat]); 27} 28 29static inline void nfs_inc_stats(const struct inode *inode, 30 enum nfs_stat_eventcounters stat) 31{ 32 nfs_inc_server_stats(NFS_SERVER(inode), stat); 33} 34 35static inline void nfs_add_server_stats(const struct nfs_server *server, 36 enum nfs_stat_bytecounters stat, 37 long addend) 38{ 39 this_cpu_add(server->io_stats->bytes[stat], addend); 40} 41 42static inline void nfs_add_stats(const struct inode *inode, 43 enum nfs_stat_bytecounters stat, 44 long addend) 45{ 46 nfs_add_server_stats(NFS_SERVER(inode), stat, addend); 47} 48 49static inline struct nfs_iostats __percpu *nfs_alloc_iostats(void) 50{ 51 return alloc_percpu(struct nfs_iostats); 52} 53 54static inline void nfs_free_iostats(struct nfs_iostats __percpu *stats) 55{ 56 if (stats != NULL) 57 free_percpu(stats); 58} 59 60#endif /* _NFS_IOSTAT */ 61