[mirror_ubuntu-bionic-kernel.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>

#ifdef CONFIG_DEBUG_FS

#include "super.h"
#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)
			seq_printf(s, "%lld\tmds%d\t", req->r_tid, req->r_mds);
		else
			seq_printf(s, "%lld\t(no request)\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->d_parent->d_inode),
				   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");
	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;

	dout("a\n");

	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;

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

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

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

	dout("ea\n");
	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
039934b8 SW	15	#ifdef CONFIG_DEBUG_FS
039934b8 SW	16
3d14c5d2 YS	17	#include "super.h"
3d14c5d2 YS	18	#include "mds_client.h"
76aa844d SW	19
	20	static int mdsmap_show(struct seq_file s, void p)
	21	{
	22	int i;
3d14c5d2	23	struct ceph_fs_client *fsc = s->private;
76aa844d	24
3d14c5d2	25	if (fsc->mdsc == NULL \|\| fsc->mdsc->mdsmap == NULL)
76aa844d	26	return 0;
3d14c5d2 YS	27	seq_printf(s, "epoch %d\n", fsc->mdsc->mdsmap->m_epoch);
3d14c5d2 YS	28	seq_printf(s, "root %d\n", fsc->mdsc->mdsmap->m_root);
76aa844d	29	seq_printf(s, "session_timeout %d\n",
3d14c5d2	30	fsc->mdsc->mdsmap->m_session_timeout);
76aa844d	31	seq_printf(s, "session_autoclose %d\n",
3d14c5d2 YS	32	fsc->mdsc->mdsmap->m_session_autoclose);
3d14c5d2 YS	33	for (i = 0; i < fsc->mdsc->mdsmap->m_max_mds; i++) {
76aa844d	34	struct ceph_entity_addr *addr =
3d14c5d2 YS	35	&fsc->mdsc->mdsmap->m_info[i].addr;
3d14c5d2 YS	36	int state = fsc->mdsc->mdsmap->m_info[i].state;
76aa844d	37
3d14c5d2 YS	38	seq_printf(s, "\tmds%d\t%s\t(%s)\n", i,
3d14c5d2 YS	39	ceph_pr_addr(&addr->in_addr),
76aa844d SW	40	ceph_mds_state_name(state));
	41	}
	42	return 0;
	43	}
	44
3d14c5d2 YS	45	/*
	46	* mdsc debugfs
	47	*/
76aa844d SW	48	static int mdsc_show(struct seq_file s, void p)
76aa844d SW	49	{
3d14c5d2 YS	50	struct ceph_fs_client *fsc = s->private;
3d14c5d2 YS	51	struct ceph_mds_client *mdsc = fsc->mdsc;
44ca18f2 SW	52	struct ceph_mds_request *req;
44ca18f2 SW	53	struct rb_node *rp;
76aa844d SW	54	int pathlen;
	55	u64 pathbase;
	56	char *path;
	57
	58	mutex_lock(&mdsc->mutex);
44ca18f2 SW	59	for (rp = rb_first(&mdsc->request_tree); rp; rp = rb_next(rp)) {
44ca18f2 SW	60	req = rb_entry(rp, struct ceph_mds_request, r_node);
76aa844d SW	61
	62	if (req->r_request)
	63	seq_printf(s, "%lld\tmds%d\t", req->r_tid, req->r_mds);
	64	else
	65	seq_printf(s, "%lld\t(no request)\t", req->r_tid);
	66
	67	seq_printf(s, "%s", ceph_mds_op_name(req->r_op));
	68
	69	if (req->r_got_unsafe)
	70	seq_printf(s, "\t(unsafe)");
	71	else
	72	seq_printf(s, "\t");
	73
	74	if (req->r_inode) {
	75	seq_printf(s, " #%llx", ceph_ino(req->r_inode));
	76	} else if (req->r_dentry) {
	77	path = ceph_mdsc_build_path(req->r_dentry, &pathlen,
	78	&pathbase, 0);
f44c3890 DC	79	if (IS_ERR(path))
f44c3890 DC	80	path = NULL;
76aa844d SW	81	spin_lock(&req->r_dentry->d_lock);
	82	seq_printf(s, " #%llx/%.*s (%s)",
	83	ceph_ino(req->r_dentry->d_parent->d_inode),
	84	req->r_dentry->d_name.len,
	85	req->r_dentry->d_name.name,
	86	path ? path : "");
	87	spin_unlock(&req->r_dentry->d_lock);
	88	kfree(path);
	89	} else if (req->r_path1) {
	90	seq_printf(s, " #%llx/%s", req->r_ino1.ino,
	91	req->r_path1);
	92	}
	93
	94	if (req->r_old_dentry) {
	95	path = ceph_mdsc_build_path(req->r_old_dentry, &pathlen,
	96	&pathbase, 0);
f44c3890 DC	97	if (IS_ERR(path))
f44c3890 DC	98	path = NULL;
76aa844d SW	99	spin_lock(&req->r_old_dentry->d_lock);
	100	seq_printf(s, " #%llx/%.*s (%s)",
	101	ceph_ino(req->r_old_dentry->d_parent->d_inode),
	102	req->r_old_dentry->d_name.len,
	103	req->r_old_dentry->d_name.name,
	104	path ? path : "");
	105	spin_unlock(&req->r_old_dentry->d_lock);
	106	kfree(path);
	107	} else if (req->r_path2) {
	108	if (req->r_ino2.ino)
	109	seq_printf(s, " #%llx/%s", req->r_ino2.ino,
	110	req->r_path2);
	111	else
	112	seq_printf(s, " %s", req->r_path2);
	113	}
	114
	115	seq_printf(s, "\n");
	116	}
	117	mutex_unlock(&mdsc->mutex);
	118
	119	return 0;
	120	}
	121
76aa844d SW	122	static int caps_show(struct seq_file s, void p)
76aa844d SW	123	{
3d14c5d2	124	struct ceph_fs_client *fsc = s->private;
85ccce43	125	int total, avail, used, reserved, min;
76aa844d	126
3d14c5d2	127	ceph_reservation_status(fsc, &total, &avail, &used, &reserved, &min);
76aa844d	128	seq_printf(s, "total\t\t%d\n"
85ccce43 SW	129	"avail\t\t%d\n"
	130	"used\t\t%d\n"
	131	"reserved\t%d\n"
	132	"min\t%d\n",
	133	total, avail, used, reserved, min);
76aa844d SW	134	return 0;
	135	}
	136
	137	static int dentry_lru_show(struct seq_file s, void ptr)
	138	{
3d14c5d2 YS	139	struct ceph_fs_client *fsc = s->private;
3d14c5d2 YS	140	struct ceph_mds_client *mdsc = fsc->mdsc;
76aa844d SW	141	struct ceph_dentry_info *di;
	142
	143	spin_lock(&mdsc->dentry_lru_lock);
	144	list_for_each_entry(di, &mdsc->dentry_lru, lru) {
	145	struct dentry *dentry = di->dentry;
	146	seq_printf(s, "%p %p\t%.*s\n",
	147	di, dentry, dentry->d_name.len, dentry->d_name.name);
	148	}
	149	spin_unlock(&mdsc->dentry_lru_lock);
	150
	151	return 0;
	152	}
	153
3d14c5d2 YS	154	CEPH_DEFINE_SHOW_FUNC(mdsmap_show)
	155	CEPH_DEFINE_SHOW_FUNC(mdsc_show)
	156	CEPH_DEFINE_SHOW_FUNC(caps_show)
	157	CEPH_DEFINE_SHOW_FUNC(dentry_lru_show)
	158
76aa844d	159
3d14c5d2 YS	160	/*
	161	* debugfs
	162	*/
2baba250 YS	163	static int congestion_kb_set(void *data, u64 val)
2baba250 YS	164	{
3d14c5d2	165	struct ceph_fs_client fsc = (struct ceph_fs_client )data;
2baba250	166
3d14c5d2	167	fsc->mount_options->congestion_kb = (int)val;
2baba250 YS	168	return 0;
	169	}
	170
	171	static int congestion_kb_get(void data, u64 val)
	172	{
3d14c5d2	173	struct ceph_fs_client fsc = (struct ceph_fs_client )data;
2baba250	174
3d14c5d2	175	*val = (u64)fsc->mount_options->congestion_kb;
2baba250 YS	176	return 0;
	177	}
	178
2baba250 YS	179	DEFINE_SIMPLE_ATTRIBUTE(congestion_kb_fops, congestion_kb_get,
	180	congestion_kb_set, "%llu\n");
	181
76aa844d	182
3d14c5d2	183	void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
76aa844d	184	{
3d14c5d2 YS	185	dout("ceph_fs_debugfs_cleanup\n");
	186	debugfs_remove(fsc->debugfs_bdi);
	187	debugfs_remove(fsc->debugfs_congestion_kb);
	188	debugfs_remove(fsc->debugfs_mdsmap);
	189	debugfs_remove(fsc->debugfs_caps);
	190	debugfs_remove(fsc->debugfs_mdsc);
	191	debugfs_remove(fsc->debugfs_dentry_lru);
76aa844d SW	192	}
76aa844d SW	193
3d14c5d2	194	int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
76aa844d	195	{
3d14c5d2 YS	196	char name[100];
3d14c5d2 YS	197	int err = -ENOMEM;
76aa844d	198
3d14c5d2 YS	199	dout("ceph_fs_debugfs_init\n");
	200	fsc->debugfs_congestion_kb =
	201	debugfs_create_file("writeback_congestion_kb",
	202	0600,
	203	fsc->client->debugfs_dir,
	204	fsc,
	205	&congestion_kb_fops);
	206	if (!fsc->debugfs_congestion_kb)
76aa844d SW	207	goto out;
76aa844d SW	208
3d14c5d2	209	dout("a\n");
76aa844d	210
3d14c5d2 YS	211	snprintf(name, sizeof(name), "../../bdi/%s",
	212	dev_name(fsc->backing_dev_info.dev));
	213	fsc->debugfs_bdi =
	214	debugfs_create_symlink("bdi",
	215	fsc->client->debugfs_dir,
	216	name);
	217	if (!fsc->debugfs_bdi)
76aa844d SW	218	goto out;
76aa844d SW	219
3d14c5d2 YS	220	dout("b\n");
3d14c5d2 YS	221	fsc->debugfs_mdsmap = debugfs_create_file("mdsmap",
76aa844d	222	0600,
3d14c5d2 YS	223	fsc->client->debugfs_dir,
3d14c5d2 YS	224	fsc,
76aa844d	225	&mdsmap_show_fops);
3d14c5d2	226	if (!fsc->debugfs_mdsmap)
76aa844d SW	227	goto out;
76aa844d SW	228
3d14c5d2 YS	229	dout("ca\n");
	230	fsc->debugfs_mdsc = debugfs_create_file("mdsc",
	231	0600,
	232	fsc->client->debugfs_dir,
	233	fsc,
	234	&mdsc_show_fops);
	235	if (!fsc->debugfs_mdsc)
76aa844d SW	236	goto out;
76aa844d SW	237
3d14c5d2 YS	238	dout("da\n");
3d14c5d2 YS	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	dout("ea\n");
	248	fsc->debugfs_dentry_lru = debugfs_create_file("dentry_lru",
	249	0600,
	250	fsc->client->debugfs_dir,
	251	fsc,
	252	&dentry_lru_show_fops);
	253	if (!fsc->debugfs_dentry_lru)
2baba250 YS	254	goto out;
2baba250 YS	255
76aa844d SW	256	return 0;
	257
	258	out:
3d14c5d2 YS	259	ceph_fs_debugfs_cleanup(fsc);
3d14c5d2 YS	260	return err;
76aa844d SW	261	}
76aa844d SW	262
76aa844d	263
213c99ee	264	#else /* CONFIG_DEBUG_FS */
039934b8	265
3d14c5d2	266	int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
039934b8 SW	267	{
	268	return 0;
	269	}
	270
3d14c5d2	271	void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
039934b8 SW	272	{
	273	}
	274
213c99ee	275	#endif /* CONFIG_DEBUG_FS */