mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-13 04:06:50 +07:00
6a51091d07
Add some new NFS I/O counters for FS-Cache doing things for NFS. A new line is emitted into /proc/pid/mountstats if caching is enabled that looks like: fsc: <rok> <rfl> <wok> <wfl> <unc> Where <rok> is the number of pages read successfully from the cache, <rfl> is the number of failed page reads against the cache, <wok> is the number of successful page writes to the cache, <wfl> is the number of failed page writes to the cache, and <unc> is the number of NFS pages that have been disconnected from the cache. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Steve Dickson <steved@redhat.com> Acked-by: Trond Myklebust <Trond.Myklebust@netapp.com> Acked-by: Al Viro <viro@zeniv.linux.org.uk> Tested-by: Daire Byrne <Daire.Byrne@framestore.com>
90 lines
2.0 KiB
C
90 lines
2.0 KiB
C
/*
|
|
* linux/fs/nfs/iostat.h
|
|
*
|
|
* Declarations for NFS client per-mount statistics
|
|
*
|
|
* Copyright (C) 2005, 2006 Chuck Lever <cel@netapp.com>
|
|
*
|
|
*/
|
|
|
|
#ifndef _NFS_IOSTAT
|
|
#define _NFS_IOSTAT
|
|
|
|
#include <linux/percpu.h>
|
|
#include <linux/cache.h>
|
|
#include <linux/nfs_iostat.h>
|
|
|
|
struct nfs_iostats {
|
|
unsigned long long bytes[__NFSIOS_BYTESMAX];
|
|
#ifdef CONFIG_NFS_FSCACHE
|
|
unsigned long long fscache[__NFSIOS_FSCACHEMAX];
|
|
#endif
|
|
unsigned long events[__NFSIOS_COUNTSMAX];
|
|
} ____cacheline_aligned;
|
|
|
|
static inline void nfs_inc_server_stats(const struct nfs_server *server,
|
|
enum nfs_stat_eventcounters stat)
|
|
{
|
|
struct nfs_iostats *iostats;
|
|
int cpu;
|
|
|
|
cpu = get_cpu();
|
|
iostats = per_cpu_ptr(server->io_stats, cpu);
|
|
iostats->events[stat]++;
|
|
put_cpu_no_resched();
|
|
}
|
|
|
|
static inline void nfs_inc_stats(const struct inode *inode,
|
|
enum nfs_stat_eventcounters stat)
|
|
{
|
|
nfs_inc_server_stats(NFS_SERVER(inode), stat);
|
|
}
|
|
|
|
static inline void nfs_add_server_stats(const struct nfs_server *server,
|
|
enum nfs_stat_bytecounters stat,
|
|
unsigned long addend)
|
|
{
|
|
struct nfs_iostats *iostats;
|
|
int cpu;
|
|
|
|
cpu = get_cpu();
|
|
iostats = per_cpu_ptr(server->io_stats, cpu);
|
|
iostats->bytes[stat] += addend;
|
|
put_cpu_no_resched();
|
|
}
|
|
|
|
static inline void nfs_add_stats(const struct inode *inode,
|
|
enum nfs_stat_bytecounters stat,
|
|
unsigned long addend)
|
|
{
|
|
nfs_add_server_stats(NFS_SERVER(inode), stat, addend);
|
|
}
|
|
|
|
#ifdef CONFIG_NFS_FSCACHE
|
|
static inline void nfs_add_fscache_stats(struct inode *inode,
|
|
enum nfs_stat_fscachecounters stat,
|
|
unsigned long addend)
|
|
{
|
|
struct nfs_iostats *iostats;
|
|
int cpu;
|
|
|
|
cpu = get_cpu();
|
|
iostats = per_cpu_ptr(NFS_SERVER(inode)->io_stats, cpu);
|
|
iostats->fscache[stat] += addend;
|
|
put_cpu_no_resched();
|
|
}
|
|
#endif
|
|
|
|
static inline struct nfs_iostats *nfs_alloc_iostats(void)
|
|
{
|
|
return alloc_percpu(struct nfs_iostats);
|
|
}
|
|
|
|
static inline void nfs_free_iostats(struct nfs_iostats *stats)
|
|
{
|
|
if (stats != NULL)
|
|
free_percpu(stats);
|
|
}
|
|
|
|
#endif /* _NFS_IOSTAT */
|