[net-next-2.6.git] / fs / nfs / iostat.h

/*
 *  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)
{
	this_cpu_inc(server->io_stats->events[stat]);
}

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,
					long addend)
{
	this_cpu_add(server->io_stats->bytes[stat], addend);
}

static inline void nfs_add_stats(const struct inode *inode,
				 enum nfs_stat_bytecounters stat,
				 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,
					 long addend)
{
	this_cpu_add(NFS_SERVER(inode)->io_stats->fscache[stat], addend);
}
#endif

static inline struct nfs_iostats __percpu *nfs_alloc_iostats(void)
{
	return alloc_percpu(struct nfs_iostats);
}

static inline void nfs_free_iostats(struct nfs_iostats __percpu *stats)
{
	if (stats != NULL)
		free_percpu(stats);
}

#endif /* _NFS_IOSTAT */
Commit	Line	Data
d9ef5a8c CL	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	*
d9ef5a8c CL	8	*/
	9
	10	#ifndef _NFS_IOSTAT
	11	#define _NFS_IOSTAT
	12
d9ef5a8c CL	13	#include <linux/percpu.h>
d9ef5a8c CL	14	#include <linux/cache.h>
34e8f928	15	#include <linux/nfs_iostat.h>
d9ef5a8c CL	16
	17	struct nfs_iostats {
	18	unsigned long long bytes[__NFSIOS_BYTESMAX];
6a51091d DH	19	#ifdef CONFIG_NFS_FSCACHE
	20	unsigned long long fscache[__NFSIOS_FSCACHEMAX];
	21	#endif
d9ef5a8c CL	22	unsigned long events[__NFSIOS_COUNTSMAX];
	23	} ____cacheline_aligned;
	24
2e96d286	25	static inline void nfs_inc_server_stats(const struct nfs_server *server,
34e8f928	26	enum nfs_stat_eventcounters stat)
d9ef5a8c	27	{
fce22848	28	this_cpu_inc(server->io_stats->events[stat]);
d9ef5a8c CL	29	}
d9ef5a8c CL	30
2e96d286	31	static inline void nfs_inc_stats(const struct inode *inode,
34e8f928	32	enum nfs_stat_eventcounters stat)
006ea73e CL	33	{
	34	nfs_inc_server_stats(NFS_SERVER(inode), stat);
	35	}
	36
2e96d286	37	static inline void nfs_add_server_stats(const struct nfs_server *server,
34e8f928	38	enum nfs_stat_bytecounters stat,
dfe52c04	39	long addend)
d9ef5a8c	40	{
fce22848	41	this_cpu_add(server->io_stats->bytes[stat], addend);
d9ef5a8c CL	42	}
d9ef5a8c CL	43
2e96d286	44	static inline void nfs_add_stats(const struct inode *inode,
34e8f928	45	enum nfs_stat_bytecounters stat,
dfe52c04	46	long addend)
006ea73e CL	47	{
	48	nfs_add_server_stats(NFS_SERVER(inode), stat, addend);
	49	}
	50
6a51091d DH	51	#ifdef CONFIG_NFS_FSCACHE
	52	static inline void nfs_add_fscache_stats(struct inode *inode,
	53	enum nfs_stat_fscachecounters stat,
dfe52c04	54	long addend)
6a51091d	55	{
fce22848	56	this_cpu_add(NFS_SERVER(inode)->io_stats->fscache[stat], addend);
6a51091d DH	57	}
	58	#endif
	59
003cb608	60	static inline struct nfs_iostats __percpu *nfs_alloc_iostats(void)
d9ef5a8c CL	61	{
	62	return alloc_percpu(struct nfs_iostats);
	63	}
	64
003cb608	65	static inline void nfs_free_iostats(struct nfs_iostats __percpu *stats)
d9ef5a8c	66	{
01d0ae8b TM	67	if (stats != NULL)
01d0ae8b TM	68	free_percpu(stats);
d9ef5a8c CL	69	}
d9ef5a8c CL	70
34e8f928	71	#endif /* _NFS_IOSTAT */