[linux.git] / fs / xfs / quota / xfs_qm_stats.c

/*
 * Copyright (c) 2000-2003 Silicon Graphics, Inc.
 * All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it would be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write the Free Software Foundation,
 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
#include "xfs.h"
#include "xfs_fs.h"
#include "xfs_bit.h"
#include "xfs_log.h"
#include "xfs_inum.h"
#include "xfs_trans.h"
#include "xfs_sb.h"
#include "xfs_ag.h"
#include "xfs_dir2.h"
#include "xfs_alloc.h"
#include "xfs_dmapi.h"
#include "xfs_quota.h"
#include "xfs_mount.h"
#include "xfs_bmap_btree.h"
#include "xfs_alloc_btree.h"
#include "xfs_ialloc_btree.h"
#include "xfs_dir2_sf.h"
#include "xfs_attr_sf.h"
#include "xfs_dinode.h"
#include "xfs_inode.h"
#include "xfs_ialloc.h"
#include "xfs_itable.h"
#include "xfs_bmap.h"
#include "xfs_btree.h"
#include "xfs_rtalloc.h"
#include "xfs_error.h"
#include "xfs_rw.h"
#include "xfs_acl.h"
#include "xfs_attr.h"
#include "xfs_buf_item.h"
#include "xfs_qm.h"

struct xqmstats xqmstats;

STATIC int
xfs_qm_read_xfsquota(
	char		*buffer,
	char		**start,
	off_t		offset,
	int		count,
	int		*eof,
	void		*data)
{
	int		len;

	/* maximum; incore; ratio free to inuse; freelist */
	len = sprintf(buffer, "%d\t%d\t%d\t%u\n",
			ndquot,
			xfs_Gqm? atomic_read(&xfs_Gqm->qm_totaldquots) : 0,
			xfs_Gqm? xfs_Gqm->qm_dqfree_ratio : 0,
			xfs_Gqm? xfs_Gqm->qm_dqfreelist.qh_nelems : 0);

	if (offset >= len) {
		*start = buffer;
		*eof = 1;
		return 0;
	}
	*start = buffer + offset;
	if ((len -= offset) > count)
		return count;
	*eof = 1;

	return len;
}

STATIC int
xfs_qm_read_stats(
	char		*buffer,
	char		**start,
	off_t		offset,
	int		count,
	int		*eof,
	void		*data)
{
	int		len;

	/* quota performance statistics */
	len = sprintf(buffer, "qm %u %u %u %u %u %u %u %u\n",
			xqmstats.xs_qm_dqreclaims,
			xqmstats.xs_qm_dqreclaim_misses,
			xqmstats.xs_qm_dquot_dups,
			xqmstats.xs_qm_dqcachemisses,
			xqmstats.xs_qm_dqcachehits,
			xqmstats.xs_qm_dqwants,
			xqmstats.xs_qm_dqshake_reclaims,
			xqmstats.xs_qm_dqinact_reclaims);

	if (offset >= len) {
		*start = buffer;
		*eof = 1;
		return 0;
	}
	*start = buffer + offset;
	if ((len -= offset) > count)
		return count;
	*eof = 1;

	return len;
}

void
xfs_qm_init_procfs(void)
{
	create_proc_read_entry("fs/xfs/xqmstat", 0, NULL, xfs_qm_read_stats, NULL);
	create_proc_read_entry("fs/xfs/xqm", 0, NULL, xfs_qm_read_xfsquota, NULL);
}

void
xfs_qm_cleanup_procfs(void)
{
	remove_proc_entry("fs/xfs/xqm", NULL);
	remove_proc_entry("fs/xfs/xqmstat", NULL);
}
Commit	Line	Data
1da177e4	1	/*
4ce3121f NS	2	* Copyright (c) 2000-2003 Silicon Graphics, Inc.
4ce3121f NS	3	* All Rights Reserved.
1da177e4	4	*
4ce3121f NS	5	* This program is free software; you can redistribute it and/or
4ce3121f NS	6	* modify it under the terms of the GNU General Public License as
1da177e4 LT	7	* published by the Free Software Foundation.
1da177e4 LT	8	*
4ce3121f NS	9	* This program is distributed in the hope that it would be useful,
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	* GNU General Public License for more details.
1da177e4	13	*
4ce3121f NS	14	* You should have received a copy of the GNU General Public License
	15	* along with this program; if not, write the Free Software Foundation,
	16	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
1da177e4	17	*/
1da177e4 LT	18	#include "xfs.h"
1da177e4 LT	19	#include "xfs_fs.h"
a844f451	20	#include "xfs_bit.h"
1da177e4	21	#include "xfs_log.h"
a844f451	22	#include "xfs_inum.h"
1da177e4 LT	23	#include "xfs_trans.h"
1da177e4 LT	24	#include "xfs_sb.h"
a844f451	25	#include "xfs_ag.h"
1da177e4 LT	26	#include "xfs_dir2.h"
	27	#include "xfs_alloc.h"
	28	#include "xfs_dmapi.h"
	29	#include "xfs_quota.h"
	30	#include "xfs_mount.h"
1da177e4	31	#include "xfs_bmap_btree.h"
a844f451	32	#include "xfs_alloc_btree.h"
1da177e4	33	#include "xfs_ialloc_btree.h"
1da177e4	34	#include "xfs_dir2_sf.h"
a844f451	35	#include "xfs_attr_sf.h"
1da177e4 LT	36	#include "xfs_dinode.h"
1da177e4 LT	37	#include "xfs_inode.h"
a844f451 NS	38	#include "xfs_ialloc.h"
a844f451 NS	39	#include "xfs_itable.h"
1da177e4	40	#include "xfs_bmap.h"
a844f451	41	#include "xfs_btree.h"
1da177e4 LT	42	#include "xfs_rtalloc.h"
1da177e4 LT	43	#include "xfs_error.h"
1da177e4 LT	44	#include "xfs_rw.h"
1da177e4 LT	45	#include "xfs_acl.h"
1da177e4 LT	46	#include "xfs_attr.h"
1da177e4 LT	47	#include "xfs_buf_item.h"
1da177e4 LT	48	#include "xfs_qm.h"
	49
	50	struct xqmstats xqmstats;
	51
	52	STATIC int
	53	xfs_qm_read_xfsquota(
	54	char *buffer,
	55	char **start,
	56	off_t offset,
	57	int count,
	58	int *eof,
	59	void *data)
	60	{
	61	int len;
	62
	63	/* maximum; incore; ratio free to inuse; freelist */
	64	len = sprintf(buffer, "%d\t%d\t%d\t%u\n",
	65	ndquot,
	66	xfs_Gqm? atomic_read(&xfs_Gqm->qm_totaldquots) : 0,
	67	xfs_Gqm? xfs_Gqm->qm_dqfree_ratio : 0,
	68	xfs_Gqm? xfs_Gqm->qm_dqfreelist.qh_nelems : 0);
	69
	70	if (offset >= len) {
	71	*start = buffer;
	72	*eof = 1;
	73	return 0;
	74	}
	75	*start = buffer + offset;
	76	if ((len -= offset) > count)
	77	return count;
	78	*eof = 1;
	79
	80	return len;
	81	}
	82
	83	STATIC int
	84	xfs_qm_read_stats(
	85	char *buffer,
	86	char **start,
	87	off_t offset,
	88	int count,
	89	int *eof,
	90	void *data)
	91	{
	92	int len;
	93
	94	/* quota performance statistics */
	95	len = sprintf(buffer, "qm %u %u %u %u %u %u %u %u\n",
	96	xqmstats.xs_qm_dqreclaims,
	97	xqmstats.xs_qm_dqreclaim_misses,
	98	xqmstats.xs_qm_dquot_dups,
	99	xqmstats.xs_qm_dqcachemisses,
	100	xqmstats.xs_qm_dqcachehits,
	101	xqmstats.xs_qm_dqwants,
	102	xqmstats.xs_qm_dqshake_reclaims,
	103	xqmstats.xs_qm_dqinact_reclaims);
	104
	105	if (offset >= len) {
	106	*start = buffer;
	107	*eof = 1;
	108	return 0;
	109	}
	110	*start = buffer + offset;
	111	if ((len -= offset) > count)
112	return count;
113	*eof = 1;
114
115	return len;
116	}
117
118	void
119	xfs_qm_init_procfs(void)
120	{
121	create_proc_read_entry("fs/xfs/xqmstat", 0, NULL, xfs_qm_read_stats, NULL);
122	create_proc_read_entry("fs/xfs/xqm", 0, NULL, xfs_qm_read_xfsquota, NULL);
123	}
124
125	void
126	xfs_qm_cleanup_procfs(void)
127	{
128	remove_proc_entry("fs/xfs/xqm", NULL);
129	remove_proc_entry("fs/xfs/xqmstat", NULL);
130	}