[GitHub/mt8127/android_kernel_alcatel_ttab.git] / fs / xfs / xfs_stats.c

/*
 * Copyright (c) 2000-2003,2005 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 <linux/proc_fs.h>

DEFINE_PER_CPU(struct xfsstats, xfsstats);

static int counter_val(int idx)
{
	int val = 0, cpu;

	for_each_possible_cpu(cpu)
		val += *(((__u32 *)&per_cpu(xfsstats, cpu) + idx));
	return val;
}

static int xfs_stat_proc_show(struct seq_file *m, void *v)
{
	int		i, j;
	__uint64_t	xs_xstrat_bytes = 0;
	__uint64_t	xs_write_bytes = 0;
	__uint64_t	xs_read_bytes = 0;

	static const struct xstats_entry {
		char	*desc;
		int	endpoint;
	} xstats[] = {
		{ "extent_alloc",	XFSSTAT_END_EXTENT_ALLOC	},
		{ "abt",		XFSSTAT_END_ALLOC_BTREE		},
		{ "blk_map",		XFSSTAT_END_BLOCK_MAPPING	},
		{ "bmbt",		XFSSTAT_END_BLOCK_MAP_BTREE	},
		{ "dir",		XFSSTAT_END_DIRECTORY_OPS	},
		{ "trans",		XFSSTAT_END_TRANSACTIONS	},
		{ "ig",			XFSSTAT_END_INODE_OPS		},
		{ "log",		XFSSTAT_END_LOG_OPS		},
		{ "push_ail",		XFSSTAT_END_TAIL_PUSHING	},
		{ "xstrat",		XFSSTAT_END_WRITE_CONVERT	},
		{ "rw",			XFSSTAT_END_READ_WRITE_OPS	},
		{ "attr",		XFSSTAT_END_ATTRIBUTE_OPS	},
		{ "icluster",		XFSSTAT_END_INODE_CLUSTER	},
		{ "vnodes",		XFSSTAT_END_VNODE_OPS		},
		{ "buf",		XFSSTAT_END_BUF			},
		{ "abtb2",		XFSSTAT_END_ABTB_V2		},
		{ "abtc2",		XFSSTAT_END_ABTC_V2		},
		{ "bmbt2",		XFSSTAT_END_BMBT_V2		},
		{ "ibt2",		XFSSTAT_END_IBT_V2		},
		/* we print both series of quota information together */
		{ "qm",			XFSSTAT_END_QM			},
	};

	/* Loop over all stats groups */
	for (i = j = 0; i < ARRAY_SIZE(xstats); i++) {
		seq_printf(m, "%s", xstats[i].desc);
		/* inner loop does each group */
		for (; j < xstats[i].endpoint; j++)
			seq_printf(m, " %u", counter_val(j));
		seq_putc(m, '\n');
	}
	/* extra precision counters */
	for_each_possible_cpu(i) {
		xs_xstrat_bytes += per_cpu(xfsstats, i).xs_xstrat_bytes;
		xs_write_bytes += per_cpu(xfsstats, i).xs_write_bytes;
		xs_read_bytes += per_cpu(xfsstats, i).xs_read_bytes;
	}

	seq_printf(m, "xpc %Lu %Lu %Lu\n",
			xs_xstrat_bytes, xs_write_bytes, xs_read_bytes);
	seq_printf(m, "debug %u\n",
#if defined(DEBUG)
		1);
#else
		0);
#endif
	return 0;
}

static int xfs_stat_proc_open(struct inode *inode, struct file *file)
{
	return single_open(file, xfs_stat_proc_show, NULL);
}

static const struct file_operations xfs_stat_proc_fops = {
	.owner		= THIS_MODULE,
	.open		= xfs_stat_proc_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= single_release,
};

/* legacy quota interfaces */
#ifdef CONFIG_XFS_QUOTA
static int xqm_proc_show(struct seq_file *m, void *v)
{
	/* maximum; incore; ratio free to inuse; freelist */
	seq_printf(m, "%d\t%d\t%d\t%u\n",
			0,
			counter_val(XFSSTAT_END_XQMSTAT),
			0,
			counter_val(XFSSTAT_END_XQMSTAT + 1));
	return 0;
}

static int xqm_proc_open(struct inode *inode, struct file *file)
{
	return single_open(file, xqm_proc_show, NULL);
}

static const struct file_operations xqm_proc_fops = {
	.owner		= THIS_MODULE,
	.open		= xqm_proc_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= single_release,
};

/* legacy quota stats interface no 2 */
static int xqmstat_proc_show(struct seq_file *m, void *v)
{
	int j;

	seq_printf(m, "qm");
	for (j = XFSSTAT_END_IBT_V2; j < XFSSTAT_END_XQMSTAT; j++)
		seq_printf(m, " %u", counter_val(j));
	seq_putc(m, '\n');
	return 0;
}

static int xqmstat_proc_open(struct inode *inode, struct file *file)
{
	return single_open(file, xqmstat_proc_show, NULL);
}

static const struct file_operations xqmstat_proc_fops = {
	.owner		= THIS_MODULE,
	.open		= xqmstat_proc_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= single_release,
};
#endif /* CONFIG_XFS_QUOTA */

int
xfs_init_procfs(void)
{
	if (!proc_mkdir("fs/xfs", NULL))
		goto out;

	if (!proc_create("fs/xfs/stat", 0, NULL,
			 &xfs_stat_proc_fops))
		goto out_remove_xfs_dir;
#ifdef CONFIG_XFS_QUOTA
	if (!proc_create("fs/xfs/xqmstat", 0, NULL,
			 &xqmstat_proc_fops))
		goto out_remove_stat_file;
	if (!proc_create("fs/xfs/xqm", 0, NULL,
			 &xqm_proc_fops))
		goto out_remove_xqmstat_file;
#endif
	return 0;

#ifdef CONFIG_XFS_QUOTA
 out_remove_xqmstat_file:
	remove_proc_entry("fs/xfs/xqmstat", NULL);
 out_remove_stat_file:
	remove_proc_entry("fs/xfs/stat", NULL);
#endif
 out_remove_xfs_dir:
	remove_proc_entry("fs/xfs", NULL);
 out:
	return -ENOMEM;
}

void
xfs_cleanup_procfs(void)
{
#ifdef CONFIG_XFS_QUOTA
	remove_proc_entry("fs/xfs/xqm", NULL);
	remove_proc_entry("fs/xfs/xqmstat", NULL);
#endif
	remove_proc_entry("fs/xfs/stat", NULL);
	remove_proc_entry("fs/xfs", NULL);
}
Commit	Line	Data
1da177e4	1	/*
7b718769 NS	2	* Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
7b718769 NS	3	* All Rights Reserved.
1da177e4	4	*
7b718769 NS	5	* This program is free software; you can redistribute it and/or
7b718769 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	*
7b718769 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	*
7b718769 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"
	19	#include <linux/proc_fs.h>
	20
	21	DEFINE_PER_CPU(struct xfsstats, xfsstats);
	22
48776fd2 CH	23	static int counter_val(int idx)
	24	{
	25	int val = 0, cpu;
	26
	27	for_each_possible_cpu(cpu)
	28	val += (((__u32 )&per_cpu(xfsstats, cpu) + idx));
	29	return val;
	30	}
	31
361735fd	32	static int xfs_stat_proc_show(struct seq_file m, void v)
1da177e4	33	{
48776fd2	34	int i, j;
1da177e4 LT	35	__uint64_t xs_xstrat_bytes = 0;
	36	__uint64_t xs_write_bytes = 0;
	37	__uint64_t xs_read_bytes = 0;
	38
1df84c93	39	static const struct xstats_entry {
1da177e4 LT	40	char *desc;
	41	int endpoint;
	42	} xstats[] = {
	43	{ "extent_alloc", XFSSTAT_END_EXTENT_ALLOC },
	44	{ "abt", XFSSTAT_END_ALLOC_BTREE },
	45	{ "blk_map", XFSSTAT_END_BLOCK_MAPPING },
	46	{ "bmbt", XFSSTAT_END_BLOCK_MAP_BTREE },
	47	{ "dir", XFSSTAT_END_DIRECTORY_OPS },
	48	{ "trans", XFSSTAT_END_TRANSACTIONS },
	49	{ "ig", XFSSTAT_END_INODE_OPS },
	50	{ "log", XFSSTAT_END_LOG_OPS },
	51	{ "push_ail", XFSSTAT_END_TAIL_PUSHING },
	52	{ "xstrat", XFSSTAT_END_WRITE_CONVERT },
	53	{ "rw", XFSSTAT_END_READ_WRITE_OPS },
	54	{ "attr", XFSSTAT_END_ATTRIBUTE_OPS },
	55	{ "icluster", XFSSTAT_END_INODE_CLUSTER },
	56	{ "vnodes", XFSSTAT_END_VNODE_OPS },
	57	{ "buf", XFSSTAT_END_BUF },
854929f0 DC	58	{ "abtb2", XFSSTAT_END_ABTB_V2 },
	59	{ "abtc2", XFSSTAT_END_ABTC_V2 },
	60	{ "bmbt2", XFSSTAT_END_BMBT_V2 },
	61	{ "ibt2", XFSSTAT_END_IBT_V2 },
48776fd2 CH	62	/* we print both series of quota information together */
48776fd2 CH	63	{ "qm", XFSSTAT_END_QM },
1da177e4 LT	64	};
	65
	66	/* Loop over all stats groups */
48776fd2	67	for (i = j = 0; i < ARRAY_SIZE(xstats); i++) {
361735fd	68	seq_printf(m, "%s", xstats[i].desc);
1da177e4	69	/* inner loop does each group */
48776fd2 CH	70	for (; j < xstats[i].endpoint; j++)
48776fd2 CH	71	seq_printf(m, " %u", counter_val(j));
361735fd	72	seq_putc(m, '\n');
1da177e4 LT	73	}
1da177e4 LT	74	/* extra precision counters */
6f0419e0	75	for_each_possible_cpu(i) {
1da177e4 LT	76	xs_xstrat_bytes += per_cpu(xfsstats, i).xs_xstrat_bytes;
	77	xs_write_bytes += per_cpu(xfsstats, i).xs_write_bytes;
	78	xs_read_bytes += per_cpu(xfsstats, i).xs_read_bytes;
	79	}
	80
361735fd	81	seq_printf(m, "xpc %Lu %Lu %Lu\n",
1da177e4	82	xs_xstrat_bytes, xs_write_bytes, xs_read_bytes);
361735fd	83	seq_printf(m, "debug %u\n",
1da177e4 LT	84	#if defined(DEBUG)
	85	1);
	86	#else
	87	0);
	88	#endif
361735fd AD	89	return 0;
361735fd AD	90	}
1da177e4	91
361735fd AD	92	static int xfs_stat_proc_open(struct inode inode, struct file file)
	93	{
	94	return single_open(file, xfs_stat_proc_show, NULL);
1da177e4 LT	95	}
1da177e4 LT	96
361735fd AD	97	static const struct file_operations xfs_stat_proc_fops = {
	98	.owner = THIS_MODULE,
	99	.open = xfs_stat_proc_open,
	100	.read = seq_read,
	101	.llseek = seq_lseek,
	102	.release = single_release,
	103	};
	104
48776fd2 CH	105	/* legacy quota interfaces */
	106	#ifdef CONFIG_XFS_QUOTA
	107	static int xqm_proc_show(struct seq_file m, void v)
	108	{
	109	/* maximum; incore; ratio free to inuse; freelist */
	110	seq_printf(m, "%d\t%d\t%d\t%u\n",
	111	0,
	112	counter_val(XFSSTAT_END_XQMSTAT),
	113	0,
	114	counter_val(XFSSTAT_END_XQMSTAT + 1));
	115	return 0;
	116	}
	117
	118	static int xqm_proc_open(struct inode inode, struct file file)
	119	{
	120	return single_open(file, xqm_proc_show, NULL);
	121	}
	122
	123	static const struct file_operations xqm_proc_fops = {
	124	.owner = THIS_MODULE,
	125	.open = xqm_proc_open,
	126	.read = seq_read,
	127	.llseek = seq_lseek,
	128	.release = single_release,
	129	};
	130
	131	/* legacy quota stats interface no 2 */
	132	static int xqmstat_proc_show(struct seq_file m, void v)
	133	{
	134	int j;
	135
	136	seq_printf(m, "qm");
	137	for (j = XFSSTAT_END_IBT_V2; j < XFSSTAT_END_XQMSTAT; j++)
	138	seq_printf(m, " %u", counter_val(j));
	139	seq_putc(m, '\n');
	140	return 0;
	141	}
	142
	143	static int xqmstat_proc_open(struct inode inode, struct file file)
	144	{
	145	return single_open(file, xqmstat_proc_show, NULL);
	146	}
	147
	148	static const struct file_operations xqmstat_proc_fops = {
	149	.owner = THIS_MODULE,
	150	.open = xqmstat_proc_open,
	151	.read = seq_read,
	152	.llseek = seq_lseek,
	153	.release = single_release,
	154	};
	155	#endif /* CONFIG_XFS_QUOTA */
	156
9f8868ff	157	int
1da177e4 LT	158	xfs_init_procfs(void)
	159	{
	160	if (!proc_mkdir("fs/xfs", NULL))
9f8868ff CH	161	goto out;
9f8868ff CH	162
361735fd AD	163	if (!proc_create("fs/xfs/stat", 0, NULL,
361735fd AD	164	&xfs_stat_proc_fops))
48776fd2 CH	165	goto out_remove_xfs_dir;
	166	#ifdef CONFIG_XFS_QUOTA
	167	if (!proc_create("fs/xfs/xqmstat", 0, NULL,
	168	&xqmstat_proc_fops))
	169	goto out_remove_stat_file;
	170	if (!proc_create("fs/xfs/xqm", 0, NULL,
	171	&xqm_proc_fops))
	172	goto out_remove_xqmstat_file;
	173	#endif
9f8868ff CH	174	return 0;
9f8868ff CH	175
48776fd2 CH	176	#ifdef CONFIG_XFS_QUOTA
	177	out_remove_xqmstat_file:
	178	remove_proc_entry("fs/xfs/xqmstat", NULL);
	179	out_remove_stat_file:
	180	remove_proc_entry("fs/xfs/stat", NULL);
	181	#endif
	182	out_remove_xfs_dir:
9f8868ff CH	183	remove_proc_entry("fs/xfs", NULL);
	184	out:
	185	return -ENOMEM;
1da177e4 LT	186	}
	187
	188	void
	189	xfs_cleanup_procfs(void)
	190	{
48776fd2 CH	191	#ifdef CONFIG_XFS_QUOTA
	192	remove_proc_entry("fs/xfs/xqm", NULL);
	193	remove_proc_entry("fs/xfs/xqmstat", NULL);
	194	#endif
1da177e4 LT	195	remove_proc_entry("fs/xfs/stat", NULL);
	196	remove_proc_entry("fs/xfs", NULL);
	197	}