[linux-2.6-block.git] / fs / ceph / debugfs.c

#include <linux/ceph/ceph_debug.h>

#include <linux/device.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/ctype.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>

#include <linux/ceph/libceph.h>
#include <linux/ceph/mon_client.h>
#include <linux/ceph/auth.h>
#include <linux/ceph/debugfs.h>

#include "super.h"

#ifdef CONFIG_DEBUG_FS

#include "mds_client.h"

static int mdsmap_show(struct seq_file *s, void *p)
{
	int i;
	struct ceph_fs_client *fsc = s->private;

	if (fsc->mdsc == NULL || fsc->mdsc->mdsmap == NULL)
		return 0;
	seq_printf(s, "epoch %d\n", fsc->mdsc->mdsmap->m_epoch);
	seq_printf(s, "root %d\n", fsc->mdsc->mdsmap->m_root);
	seq_printf(s, "session_timeout %d\n",
		       fsc->mdsc->mdsmap->m_session_timeout);
	seq_printf(s, "session_autoclose %d\n",
		       fsc->mdsc->mdsmap->m_session_autoclose);
	for (i = 0; i < fsc->mdsc->mdsmap->m_max_mds; i++) {
		struct ceph_entity_addr *addr =
			&fsc->mdsc->mdsmap->m_info[i].addr;
		int state = fsc->mdsc->mdsmap->m_info[i].state;

		seq_printf(s, "\tmds%d\t%s\t(%s)\n", i,
			       ceph_pr_addr(&addr->in_addr),
			       ceph_mds_state_name(state));
	}
	return 0;
}

/*
 * mdsc debugfs
 */
static int mdsc_show(struct seq_file *s, void *p)
{
	struct ceph_fs_client *fsc = s->private;
	struct ceph_mds_client *mdsc = fsc->mdsc;
	struct ceph_mds_request *req;
	struct rb_node *rp;
	int pathlen;
	u64 pathbase;
	char *path;

	mutex_lock(&mdsc->mutex);
	for (rp = rb_first(&mdsc->request_tree); rp; rp = rb_next(rp)) {
		req = rb_entry(rp, struct ceph_mds_request, r_node);

		if (req->r_request && req->r_session)
			seq_printf(s, "%lld\tmds%d\t", req->r_tid,
				   req->r_session->s_mds);
		else if (!req->r_request)
			seq_printf(s, "%lld\t(no request)\t", req->r_tid);
		else
			seq_printf(s, "%lld\t(no session)\t", req->r_tid);

		seq_printf(s, "%s", ceph_mds_op_name(req->r_op));

		if (req->r_got_unsafe)
			seq_printf(s, "\t(unsafe)");
		else
			seq_printf(s, "\t");

		if (req->r_inode) {
			seq_printf(s, " #%llx", ceph_ino(req->r_inode));
		} else if (req->r_dentry) {
			path = ceph_mdsc_build_path(req->r_dentry, &pathlen,
						    &pathbase, 0);
			if (IS_ERR(path))
				path = NULL;
			spin_lock(&req->r_dentry->d_lock);
			seq_printf(s, " #%llx/%.*s (%s)",
				   ceph_ino(req->r_dentry->d_parent->d_inode),
				   req->r_dentry->d_name.len,
				   req->r_dentry->d_name.name,
				   path ? path : "");
			spin_unlock(&req->r_dentry->d_lock);
			kfree(path);
		} else if (req->r_path1) {
			seq_printf(s, " #%llx/%s", req->r_ino1.ino,
				   req->r_path1);
		}

		if (req->r_old_dentry) {
			path = ceph_mdsc_build_path(req->r_old_dentry, &pathlen,
						    &pathbase, 0);
			if (IS_ERR(path))
				path = NULL;
			spin_lock(&req->r_old_dentry->d_lock);
			seq_printf(s, " #%llx/%.*s (%s)",
			   ceph_ino(req->r_old_dentry_dir),
				   req->r_old_dentry->d_name.len,
				   req->r_old_dentry->d_name.name,
				   path ? path : "");
			spin_unlock(&req->r_old_dentry->d_lock);
			kfree(path);
		} else if (req->r_path2) {
			if (req->r_ino2.ino)
				seq_printf(s, " #%llx/%s", req->r_ino2.ino,
					   req->r_path2);
			else
				seq_printf(s, " %s", req->r_path2);
		}

		seq_printf(s, "\n");
	}
	mutex_unlock(&mdsc->mutex);

	return 0;
}

static int caps_show(struct seq_file *s, void *p)
{
	struct ceph_fs_client *fsc = s->private;
	int total, avail, used, reserved, min;

	ceph_reservation_status(fsc, &total, &avail, &used, &reserved, &min);
	seq_printf(s, "total\t\t%d\n"
		   "avail\t\t%d\n"
		   "used\t\t%d\n"
		   "reserved\t%d\n"
		   "min\t%d\n",
		   total, avail, used, reserved, min);
	return 0;
}

static int dentry_lru_show(struct seq_file *s, void *ptr)
{
	struct ceph_fs_client *fsc = s->private;
	struct ceph_mds_client *mdsc = fsc->mdsc;
	struct ceph_dentry_info *di;

	spin_lock(&mdsc->dentry_lru_lock);
	list_for_each_entry(di, &mdsc->dentry_lru, lru) {
		struct dentry *dentry = di->dentry;
		seq_printf(s, "%p %p\t%.*s\n",
			   di, dentry, dentry->d_name.len, dentry->d_name.name);
	}
	spin_unlock(&mdsc->dentry_lru_lock);

	return 0;
}

CEPH_DEFINE_SHOW_FUNC(mdsmap_show)
CEPH_DEFINE_SHOW_FUNC(mdsc_show)
CEPH_DEFINE_SHOW_FUNC(caps_show)
CEPH_DEFINE_SHOW_FUNC(dentry_lru_show)


/*
 * debugfs
 */
static int congestion_kb_set(void *data, u64 val)
{
	struct ceph_fs_client *fsc = (struct ceph_fs_client *)data;

	fsc->mount_options->congestion_kb = (int)val;
	return 0;
}

static int congestion_kb_get(void *data, u64 *val)
{
	struct ceph_fs_client *fsc = (struct ceph_fs_client *)data;

	*val = (u64)fsc->mount_options->congestion_kb;
	return 0;
}

DEFINE_SIMPLE_ATTRIBUTE(congestion_kb_fops, congestion_kb_get,
			congestion_kb_set, "%llu\n");


void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
{
	dout("ceph_fs_debugfs_cleanup\n");
	debugfs_remove(fsc->debugfs_bdi);
	debugfs_remove(fsc->debugfs_congestion_kb);
	debugfs_remove(fsc->debugfs_mdsmap);
	debugfs_remove(fsc->debugfs_caps);
	debugfs_remove(fsc->debugfs_mdsc);
	debugfs_remove(fsc->debugfs_dentry_lru);
}

int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
{
	char name[100];
	int err = -ENOMEM;

	dout("ceph_fs_debugfs_init\n");
	BUG_ON(!fsc->client->debugfs_dir);
	fsc->debugfs_congestion_kb =
		debugfs_create_file("writeback_congestion_kb",
				    0600,
				    fsc->client->debugfs_dir,
				    fsc,
				    &congestion_kb_fops);
	if (!fsc->debugfs_congestion_kb)
		goto out;

	snprintf(name, sizeof(name), "../../bdi/%s",
		 dev_name(fsc->backing_dev_info.dev));
	fsc->debugfs_bdi =
		debugfs_create_symlink("bdi",
				       fsc->client->debugfs_dir,
				       name);
	if (!fsc->debugfs_bdi)
		goto out;

	fsc->debugfs_mdsmap = debugfs_create_file("mdsmap",
					0600,
					fsc->client->debugfs_dir,
					fsc,
					&mdsmap_show_fops);
	if (!fsc->debugfs_mdsmap)
		goto out;

	fsc->debugfs_mdsc = debugfs_create_file("mdsc",
						0600,
						fsc->client->debugfs_dir,
						fsc,
						&mdsc_show_fops);
	if (!fsc->debugfs_mdsc)
		goto out;

	fsc->debugfs_caps = debugfs_create_file("caps",
						   0400,
						   fsc->client->debugfs_dir,
						   fsc,
						   &caps_show_fops);
	if (!fsc->debugfs_caps)
		goto out;

	fsc->debugfs_dentry_lru = debugfs_create_file("dentry_lru",
					0600,
					fsc->client->debugfs_dir,
					fsc,
					&dentry_lru_show_fops);
	if (!fsc->debugfs_dentry_lru)
		goto out;

	return 0;

out:
	ceph_fs_debugfs_cleanup(fsc);
	return err;
}


#else  /* CONFIG_DEBUG_FS */

int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
{
	return 0;
}

void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
{
}

#endif  /* CONFIG_DEBUG_FS */
Commit	Line	Data
3d14c5d2	1	#include <linux/ceph/ceph_debug.h>
76aa844d	2
06edf046	3	#include <linux/device.h>
5a0e3ad6	4	#include <linux/slab.h>
76aa844d SW	5	#include <linux/module.h>
	6	#include <linux/ctype.h>
	7	#include <linux/debugfs.h>
	8	#include <linux/seq_file.h>
	9
3d14c5d2 YS	10	#include <linux/ceph/libceph.h>
	11	#include <linux/ceph/mon_client.h>
	12	#include <linux/ceph/auth.h>
	13	#include <linux/ceph/debugfs.h>
76aa844d	14
6f453ed6 RD	15	#include "super.h"
6f453ed6 RD	16
039934b8 SW	17	#ifdef CONFIG_DEBUG_FS
039934b8 SW	18
3d14c5d2	19	#include "mds_client.h"
76aa844d SW	20
	21	static int mdsmap_show(struct seq_file s, void p)
	22	{
	23	int i;
3d14c5d2	24	struct ceph_fs_client *fsc = s->private;
76aa844d	25
3d14c5d2	26	if (fsc->mdsc == NULL \|\| fsc->mdsc->mdsmap == NULL)
76aa844d	27	return 0;
3d14c5d2 YS	28	seq_printf(s, "epoch %d\n", fsc->mdsc->mdsmap->m_epoch);
3d14c5d2 YS	29	seq_printf(s, "root %d\n", fsc->mdsc->mdsmap->m_root);
76aa844d	30	seq_printf(s, "session_timeout %d\n",
3d14c5d2	31	fsc->mdsc->mdsmap->m_session_timeout);
76aa844d	32	seq_printf(s, "session_autoclose %d\n",
3d14c5d2 YS	33	fsc->mdsc->mdsmap->m_session_autoclose);
3d14c5d2 YS	34	for (i = 0; i < fsc->mdsc->mdsmap->m_max_mds; i++) {
76aa844d	35	struct ceph_entity_addr *addr =
3d14c5d2 YS	36	&fsc->mdsc->mdsmap->m_info[i].addr;
3d14c5d2 YS	37	int state = fsc->mdsc->mdsmap->m_info[i].state;
76aa844d	38
3d14c5d2 YS	39	seq_printf(s, "\tmds%d\t%s\t(%s)\n", i,
3d14c5d2 YS	40	ceph_pr_addr(&addr->in_addr),
76aa844d SW	41	ceph_mds_state_name(state));
	42	}
	43	return 0;
	44	}
	45
3d14c5d2 YS	46	/*
	47	* mdsc debugfs
	48	*/
76aa844d SW	49	static int mdsc_show(struct seq_file s, void p)
76aa844d SW	50	{
3d14c5d2 YS	51	struct ceph_fs_client *fsc = s->private;
3d14c5d2 YS	52	struct ceph_mds_client *mdsc = fsc->mdsc;
44ca18f2 SW	53	struct ceph_mds_request *req;
44ca18f2 SW	54	struct rb_node *rp;
76aa844d SW	55	int pathlen;
	56	u64 pathbase;
	57	char *path;
	58
	59	mutex_lock(&mdsc->mutex);
44ca18f2 SW	60	for (rp = rb_first(&mdsc->request_tree); rp; rp = rb_next(rp)) {
44ca18f2 SW	61	req = rb_entry(rp, struct ceph_mds_request, r_node);
76aa844d	62
4af25fdd SW	63	if (req->r_request && req->r_session)
	64	seq_printf(s, "%lld\tmds%d\t", req->r_tid,
	65	req->r_session->s_mds);
	66	else if (!req->r_request)
76aa844d	67	seq_printf(s, "%lld\t(no request)\t", req->r_tid);
4af25fdd SW	68	else
4af25fdd SW	69	seq_printf(s, "%lld\t(no session)\t", req->r_tid);
76aa844d SW	70
	71	seq_printf(s, "%s", ceph_mds_op_name(req->r_op));
	72
	73	if (req->r_got_unsafe)
	74	seq_printf(s, "\t(unsafe)");
	75	else
	76	seq_printf(s, "\t");
	77
	78	if (req->r_inode) {
	79	seq_printf(s, " #%llx", ceph_ino(req->r_inode));
	80	} else if (req->r_dentry) {
	81	path = ceph_mdsc_build_path(req->r_dentry, &pathlen,
	82	&pathbase, 0);
f44c3890 DC	83	if (IS_ERR(path))
f44c3890 DC	84	path = NULL;
76aa844d SW	85	spin_lock(&req->r_dentry->d_lock);
	86	seq_printf(s, " #%llx/%.*s (%s)",
	87	ceph_ino(req->r_dentry->d_parent->d_inode),
	88	req->r_dentry->d_name.len,
	89	req->r_dentry->d_name.name,
	90	path ? path : "");
	91	spin_unlock(&req->r_dentry->d_lock);
	92	kfree(path);
	93	} else if (req->r_path1) {
	94	seq_printf(s, " #%llx/%s", req->r_ino1.ino,
	95	req->r_path1);
	96	}
	97
	98	if (req->r_old_dentry) {
	99	path = ceph_mdsc_build_path(req->r_old_dentry, &pathlen,
	100	&pathbase, 0);
f44c3890 DC	101	if (IS_ERR(path))
f44c3890 DC	102	path = NULL;
76aa844d SW	103	spin_lock(&req->r_old_dentry->d_lock);
76aa844d SW	104	seq_printf(s, " #%llx/%.*s (%s)",
41b02e1f	105	ceph_ino(req->r_old_dentry_dir),
76aa844d SW	106	req->r_old_dentry->d_name.len,
	107	req->r_old_dentry->d_name.name,
	108	path ? path : "");
	109	spin_unlock(&req->r_old_dentry->d_lock);
	110	kfree(path);
	111	} else if (req->r_path2) {
	112	if (req->r_ino2.ino)
	113	seq_printf(s, " #%llx/%s", req->r_ino2.ino,
	114	req->r_path2);
	115	else
	116	seq_printf(s, " %s", req->r_path2);
	117	}
	118
	119	seq_printf(s, "\n");
	120	}
	121	mutex_unlock(&mdsc->mutex);
	122
	123	return 0;
	124	}
	125
76aa844d SW	126	static int caps_show(struct seq_file s, void p)
76aa844d SW	127	{
3d14c5d2	128	struct ceph_fs_client *fsc = s->private;
85ccce43	129	int total, avail, used, reserved, min;
76aa844d	130
3d14c5d2	131	ceph_reservation_status(fsc, &total, &avail, &used, &reserved, &min);
76aa844d	132	seq_printf(s, "total\t\t%d\n"
85ccce43 SW	133	"avail\t\t%d\n"
	134	"used\t\t%d\n"
	135	"reserved\t%d\n"
	136	"min\t%d\n",
	137	total, avail, used, reserved, min);
76aa844d SW	138	return 0;
	139	}
	140
	141	static int dentry_lru_show(struct seq_file s, void ptr)
	142	{
3d14c5d2 YS	143	struct ceph_fs_client *fsc = s->private;
3d14c5d2 YS	144	struct ceph_mds_client *mdsc = fsc->mdsc;
76aa844d SW	145	struct ceph_dentry_info *di;
	146
	147	spin_lock(&mdsc->dentry_lru_lock);
	148	list_for_each_entry(di, &mdsc->dentry_lru, lru) {
	149	struct dentry *dentry = di->dentry;
	150	seq_printf(s, "%p %p\t%.*s\n",
	151	di, dentry, dentry->d_name.len, dentry->d_name.name);
	152	}
	153	spin_unlock(&mdsc->dentry_lru_lock);
	154
	155	return 0;
	156	}
	157
3d14c5d2 YS	158	CEPH_DEFINE_SHOW_FUNC(mdsmap_show)
	159	CEPH_DEFINE_SHOW_FUNC(mdsc_show)
	160	CEPH_DEFINE_SHOW_FUNC(caps_show)
	161	CEPH_DEFINE_SHOW_FUNC(dentry_lru_show)
	162
76aa844d	163
3d14c5d2 YS	164	/*
	165	* debugfs
	166	*/
2baba250 YS	167	static int congestion_kb_set(void *data, u64 val)
2baba250 YS	168	{
3d14c5d2	169	struct ceph_fs_client fsc = (struct ceph_fs_client )data;
2baba250	170
3d14c5d2	171	fsc->mount_options->congestion_kb = (int)val;
2baba250 YS	172	return 0;
	173	}
	174
	175	static int congestion_kb_get(void data, u64 val)
	176	{
3d14c5d2	177	struct ceph_fs_client fsc = (struct ceph_fs_client )data;
2baba250	178
3d14c5d2	179	*val = (u64)fsc->mount_options->congestion_kb;
2baba250 YS	180	return 0;
	181	}
	182
2baba250 YS	183	DEFINE_SIMPLE_ATTRIBUTE(congestion_kb_fops, congestion_kb_get,
	184	congestion_kb_set, "%llu\n");
	185
76aa844d	186
3d14c5d2	187	void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
76aa844d	188	{
3d14c5d2 YS	189	dout("ceph_fs_debugfs_cleanup\n");
	190	debugfs_remove(fsc->debugfs_bdi);
	191	debugfs_remove(fsc->debugfs_congestion_kb);
	192	debugfs_remove(fsc->debugfs_mdsmap);
	193	debugfs_remove(fsc->debugfs_caps);
	194	debugfs_remove(fsc->debugfs_mdsc);
	195	debugfs_remove(fsc->debugfs_dentry_lru);
76aa844d SW	196	}
76aa844d SW	197
3d14c5d2	198	int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
76aa844d	199	{
3d14c5d2 YS	200	char name[100];
3d14c5d2 YS	201	int err = -ENOMEM;
76aa844d	202
3d14c5d2	203	dout("ceph_fs_debugfs_init\n");
d1c338a5	204	BUG_ON(!fsc->client->debugfs_dir);
3d14c5d2 YS	205	fsc->debugfs_congestion_kb =
	206	debugfs_create_file("writeback_congestion_kb",
	207	0600,
	208	fsc->client->debugfs_dir,
	209	fsc,
	210	&congestion_kb_fops);
	211	if (!fsc->debugfs_congestion_kb)
76aa844d SW	212	goto out;
76aa844d SW	213
3d14c5d2 YS	214	snprintf(name, sizeof(name), "../../bdi/%s",
	215	dev_name(fsc->backing_dev_info.dev));
	216	fsc->debugfs_bdi =
	217	debugfs_create_symlink("bdi",
	218	fsc->client->debugfs_dir,
	219	name);
	220	if (!fsc->debugfs_bdi)
76aa844d SW	221	goto out;
76aa844d SW	222
3d14c5d2	223	fsc->debugfs_mdsmap = debugfs_create_file("mdsmap",
76aa844d	224	0600,
3d14c5d2 YS	225	fsc->client->debugfs_dir,
3d14c5d2 YS	226	fsc,
76aa844d	227	&mdsmap_show_fops);
3d14c5d2	228	if (!fsc->debugfs_mdsmap)
76aa844d SW	229	goto out;
76aa844d SW	230
3d14c5d2 YS	231	fsc->debugfs_mdsc = debugfs_create_file("mdsc",
	232	0600,
	233	fsc->client->debugfs_dir,
	234	fsc,
	235	&mdsc_show_fops);
	236	if (!fsc->debugfs_mdsc)
76aa844d SW	237	goto out;
76aa844d SW	238
3d14c5d2	239	fsc->debugfs_caps = debugfs_create_file("caps",
76aa844d	240	0400,
3d14c5d2 YS	241	fsc->client->debugfs_dir,
3d14c5d2 YS	242	fsc,
76aa844d	243	&caps_show_fops);
3d14c5d2	244	if (!fsc->debugfs_caps)
76aa844d SW	245	goto out;
76aa844d SW	246
3d14c5d2 YS	247	fsc->debugfs_dentry_lru = debugfs_create_file("dentry_lru",
	248	0600,
	249	fsc->client->debugfs_dir,
	250	fsc,
	251	&dentry_lru_show_fops);
	252	if (!fsc->debugfs_dentry_lru)
2baba250 YS	253	goto out;
2baba250 YS	254
76aa844d SW	255	return 0;
	256
	257	out:
3d14c5d2 YS	258	ceph_fs_debugfs_cleanup(fsc);
3d14c5d2 YS	259	return err;
76aa844d SW	260	}
76aa844d SW	261
76aa844d	262
213c99ee	263	#else /* CONFIG_DEBUG_FS */
039934b8	264
3d14c5d2	265	int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
039934b8 SW	266	{
	267	return 0;
	268	}
	269
3d14c5d2	270	void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
039934b8 SW	271	{
	272	}
	273
213c99ee	274	#endif /* CONFIG_DEBUG_FS */