[net-next-2.6.git] / fs / ceph / debugfs.c

#include "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 "super.h"
#include "mds_client.h"
#include "mon_client.h"
#include "auth.h"

#ifdef CONFIG_DEBUG_FS

/*
 * Implement /sys/kernel/debug/ceph fun
 *
 * /sys/kernel/debug/ceph/client*  - an instance of the ceph client
 *      .../osdmap      - current osdmap
 *      .../mdsmap      - current mdsmap
 *      .../monmap      - current monmap
 *      .../osdc        - active osd requests
 *      .../mdsc        - active mds requests
 *      .../monc        - mon client state
 *      .../dentry_lru  - dump contents of dentry lru
 *      .../caps        - expose cap (reservation) stats
 *      .../bdi         - symlink to ../../bdi/something
 */

static struct dentry *ceph_debugfs_dir;

static int monmap_show(struct seq_file *s, void *p)
{
	int i;
	struct ceph_client *client = s->private;

	if (client->monc.monmap == NULL)
		return 0;

	seq_printf(s, "epoch %d\n", client->monc.monmap->epoch);
	for (i = 0; i < client->monc.monmap->num_mon; i++) {
		struct ceph_entity_inst *inst =
			&client->monc.monmap->mon_inst[i];

		seq_printf(s, "\t%s%lld\t%s\n",
			   ENTITY_NAME(inst->name),
			   pr_addr(&inst->addr.in_addr));
	}
	return 0;
}

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

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

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

static int osdmap_show(struct seq_file *s, void *p)
{
	int i;
	struct ceph_client *client = s->private;
	struct rb_node *n;

	if (client->osdc.osdmap == NULL)
		return 0;
	seq_printf(s, "epoch %d\n", client->osdc.osdmap->epoch);
	seq_printf(s, "flags%s%s\n",
		   (client->osdc.osdmap->flags & CEPH_OSDMAP_NEARFULL) ?
		   " NEARFULL" : "",
		   (client->osdc.osdmap->flags & CEPH_OSDMAP_FULL) ?
		   " FULL" : "");
	for (n = rb_first(&client->osdc.osdmap->pg_pools); n; n = rb_next(n)) {
		struct ceph_pg_pool_info *pool =
			rb_entry(n, struct ceph_pg_pool_info, node);
		seq_printf(s, "pg_pool %d pg_num %d / %d, lpg_num %d / %d\n",
			   pool->id, pool->v.pg_num, pool->pg_num_mask,
			   pool->v.lpg_num, pool->lpg_num_mask);
	}
	for (i = 0; i < client->osdc.osdmap->max_osd; i++) {
		struct ceph_entity_addr *addr =
			&client->osdc.osdmap->osd_addr[i];
		int state = client->osdc.osdmap->osd_state[i];
		char sb[64];

		seq_printf(s, "\tosd%d\t%s\t%3d%%\t(%s)\n",
			   i, pr_addr(&addr->in_addr),
			   ((client->osdc.osdmap->osd_weight[i]*100) >> 16),
			   ceph_osdmap_state_str(sb, sizeof(sb), state));
	}
	return 0;
}

static int monc_show(struct seq_file *s, void *p)
{
	struct ceph_client *client = s->private;
	struct ceph_mon_generic_request *req;
	struct ceph_mon_client *monc = &client->monc;
	struct rb_node *rp;

	mutex_lock(&monc->mutex);

	if (monc->have_mdsmap)
		seq_printf(s, "have mdsmap %u\n", (unsigned)monc->have_mdsmap);
	if (monc->have_osdmap)
		seq_printf(s, "have osdmap %u\n", (unsigned)monc->have_osdmap);
	if (monc->want_next_osdmap)
		seq_printf(s, "want next osdmap\n");

	for (rp = rb_first(&monc->generic_request_tree); rp; rp = rb_next(rp)) {
		__u16 op;
		req = rb_entry(rp, struct ceph_mon_generic_request, node);
		op = le16_to_cpu(req->request->hdr.type);
		if (op == CEPH_MSG_STATFS)
			seq_printf(s, "%lld statfs\n", req->tid);
		else
			seq_printf(s, "%lld unknown\n", req->tid);
	}

	mutex_unlock(&monc->mutex);
	return 0;
}

static int mdsc_show(struct seq_file *s, void *p)
{
	struct ceph_client *client = s->private;
	struct ceph_mds_client *mdsc = &client->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);
			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);
			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 osdc_show(struct seq_file *s, void *pp)
{
	struct ceph_client *client = s->private;
	struct ceph_osd_client *osdc = &client->osdc;
	struct rb_node *p;

	mutex_lock(&osdc->request_mutex);
	for (p = rb_first(&osdc->requests); p; p = rb_next(p)) {
		struct ceph_osd_request *req;
		struct ceph_osd_request_head *head;
		struct ceph_osd_op *op;
		int num_ops;
		int opcode, olen;
		int i;

		req = rb_entry(p, struct ceph_osd_request, r_node);

		seq_printf(s, "%lld\tosd%d\t%d.%x\t", req->r_tid,
			   req->r_osd ? req->r_osd->o_osd : -1,
			   le32_to_cpu(req->r_pgid.pool),
			   le16_to_cpu(req->r_pgid.ps));

		head = req->r_request->front.iov_base;
		op = (void *)(head + 1);

		num_ops = le16_to_cpu(head->num_ops);
		olen = le32_to_cpu(head->object_len);
		seq_printf(s, "%.*s", olen,
			   (const char *)(head->ops + num_ops));

		if (req->r_reassert_version.epoch)
			seq_printf(s, "\t%u'%llu",
			   (unsigned)le32_to_cpu(req->r_reassert_version.epoch),
			   le64_to_cpu(req->r_reassert_version.version));
		else
			seq_printf(s, "\t");

		for (i = 0; i < num_ops; i++) {
			opcode = le16_to_cpu(op->op);
			seq_printf(s, "\t%s", ceph_osd_op_name(opcode));
			op++;
		}

		seq_printf(s, "\n");
	}
	mutex_unlock(&osdc->request_mutex);
	return 0;
}

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

	ceph_reservation_status(client, &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_client *client = s->private;
	struct ceph_mds_client *mdsc = &client->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;
}

#define DEFINE_SHOW_FUNC(name)						\
static int name##_open(struct inode *inode, struct file *file)		\
{									\
	struct seq_file *sf;						\
	int ret;							\
									\
	ret = single_open(file, name, NULL);				\
	sf = file->private_data;					\
	sf->private = inode->i_private;					\
	return ret;							\
}									\
									\
static const struct file_operations name##_fops = {			\
	.open		= name##_open,					\
	.read		= seq_read,					\
	.llseek		= seq_lseek,					\
	.release	= single_release,				\
};

DEFINE_SHOW_FUNC(monmap_show)
DEFINE_SHOW_FUNC(mdsmap_show)
DEFINE_SHOW_FUNC(osdmap_show)
DEFINE_SHOW_FUNC(monc_show)
DEFINE_SHOW_FUNC(mdsc_show)
DEFINE_SHOW_FUNC(osdc_show)
DEFINE_SHOW_FUNC(dentry_lru_show)
DEFINE_SHOW_FUNC(caps_show)

static int congestion_kb_set(void *data, u64 val)
{
	struct ceph_client *client = (struct ceph_client *)data;

	if (client)
		client->mount_args->congestion_kb = (int)val;

	return 0;
}

static int congestion_kb_get(void *data, u64 *val)
{
	struct ceph_client *client = (struct ceph_client *)data;

	if (client)
		*val = (u64)client->mount_args->congestion_kb;

	return 0;
}


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

int __init ceph_debugfs_init(void)
{
	ceph_debugfs_dir = debugfs_create_dir("ceph", NULL);
	if (!ceph_debugfs_dir)
		return -ENOMEM;
	return 0;
}

void ceph_debugfs_cleanup(void)
{
	debugfs_remove(ceph_debugfs_dir);
}

int ceph_debugfs_client_init(struct ceph_client *client)
{
	int ret = 0;
	char name[80];

	snprintf(name, sizeof(name), "%pU.client%lld", &client->fsid,
		 client->monc.auth->global_id);

	client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir);
	if (!client->debugfs_dir)
		goto out;

	client->monc.debugfs_file = debugfs_create_file("monc",
						      0600,
						      client->debugfs_dir,
						      client,
						      &monc_show_fops);
	if (!client->monc.debugfs_file)
		goto out;

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

	client->osdc.debugfs_file = debugfs_create_file("osdc",
						      0600,
						      client->debugfs_dir,
						      client,
						      &osdc_show_fops);
	if (!client->osdc.debugfs_file)
		goto out;

	client->debugfs_monmap = debugfs_create_file("monmap",
					0600,
					client->debugfs_dir,
					client,
					&monmap_show_fops);
	if (!client->debugfs_monmap)
		goto out;

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

	client->debugfs_osdmap = debugfs_create_file("osdmap",
					0600,
					client->debugfs_dir,
					client,
					&osdmap_show_fops);
	if (!client->debugfs_osdmap)
		goto out;

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

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

	client->debugfs_congestion_kb =
		debugfs_create_file("writeback_congestion_kb",
				    0600,
				    client->debugfs_dir,
				    client,
				    &congestion_kb_fops);
	if (!client->debugfs_congestion_kb)
		goto out;

	sprintf(name, "../../bdi/%s", dev_name(client->sb->s_bdi->dev));
	client->debugfs_bdi = debugfs_create_symlink("bdi", client->debugfs_dir,
						     name);

	return 0;

out:
	ceph_debugfs_client_cleanup(client);
	return ret;
}

void ceph_debugfs_client_cleanup(struct ceph_client *client)
{
	debugfs_remove(client->debugfs_bdi);
	debugfs_remove(client->debugfs_caps);
	debugfs_remove(client->debugfs_dentry_lru);
	debugfs_remove(client->debugfs_osdmap);
	debugfs_remove(client->debugfs_mdsmap);
	debugfs_remove(client->debugfs_monmap);
	debugfs_remove(client->osdc.debugfs_file);
	debugfs_remove(client->mdsc.debugfs_file);
	debugfs_remove(client->monc.debugfs_file);
	debugfs_remove(client->debugfs_congestion_kb);
	debugfs_remove(client->debugfs_dir);
}

#else  /* CONFIG_DEBUG_FS */

int __init ceph_debugfs_init(void)
{
	return 0;
}

void ceph_debugfs_cleanup(void)
{
}

int ceph_debugfs_client_init(struct ceph_client *client)
{
	return 0;
}

void ceph_debugfs_client_cleanup(struct ceph_client *client)
{
}

#endif  /* CONFIG_DEBUG_FS */
Commit	Line	Data
76aa844d SW	1	#include "ceph_debug.h"
76aa844d SW	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
	10	#include "super.h"
	11	#include "mds_client.h"
0743304d SW	12	#include "mon_client.h"
0743304d SW	13	#include "auth.h"
76aa844d	14
039934b8 SW	15	#ifdef CONFIG_DEBUG_FS
039934b8 SW	16
76aa844d SW	17	/*
	18	* Implement /sys/kernel/debug/ceph fun
	19	*
	20	* /sys/kernel/debug/ceph/client* - an instance of the ceph client
	21	* .../osdmap - current osdmap
	22	* .../mdsmap - current mdsmap
	23	* .../monmap - current monmap
	24	* .../osdc - active osd requests
	25	* .../mdsc - active mds requests
	26	* .../monc - mon client state
	27	* .../dentry_lru - dump contents of dentry lru
	28	* .../caps - expose cap (reservation) stats
06edf046	29	* .../bdi - symlink to ../../bdi/something
76aa844d SW	30	*/
	31
	32	static struct dentry *ceph_debugfs_dir;
	33
	34	static int monmap_show(struct seq_file s, void p)
	35	{
	36	int i;
	37	struct ceph_client *client = s->private;
	38
	39	if (client->monc.monmap == NULL)
	40	return 0;
	41
	42	seq_printf(s, "epoch %d\n", client->monc.monmap->epoch);
	43	for (i = 0; i < client->monc.monmap->num_mon; i++) {
	44	struct ceph_entity_inst *inst =
	45	&client->monc.monmap->mon_inst[i];
	46
	47	seq_printf(s, "\t%s%lld\t%s\n",
	48	ENTITY_NAME(inst->name),
	49	pr_addr(&inst->addr.in_addr));
	50	}
	51	return 0;
	52	}
	53
	54	static int mdsmap_show(struct seq_file s, void p)
	55	{
	56	int i;
	57	struct ceph_client *client = s->private;
	58
	59	if (client->mdsc.mdsmap == NULL)
	60	return 0;
	61	seq_printf(s, "epoch %d\n", client->mdsc.mdsmap->m_epoch);
	62	seq_printf(s, "root %d\n", client->mdsc.mdsmap->m_root);
	63	seq_printf(s, "session_timeout %d\n",
	64	client->mdsc.mdsmap->m_session_timeout);
	65	seq_printf(s, "session_autoclose %d\n",
	66	client->mdsc.mdsmap->m_session_autoclose);
	67	for (i = 0; i < client->mdsc.mdsmap->m_max_mds; i++) {
	68	struct ceph_entity_addr *addr =
	69	&client->mdsc.mdsmap->m_info[i].addr;
	70	int state = client->mdsc.mdsmap->m_info[i].state;
	71
	72	seq_printf(s, "\tmds%d\t%s\t(%s)\n", i, pr_addr(&addr->in_addr),
	73	ceph_mds_state_name(state));
	74	}
	75	return 0;
	76	}
	77
	78	static int osdmap_show(struct seq_file s, void p)
	79	{
	80	int i;
	81	struct ceph_client *client = s->private;
4fc51be8	82	struct rb_node *n;
76aa844d SW	83
	84	if (client->osdc.osdmap == NULL)
	85	return 0;
	86	seq_printf(s, "epoch %d\n", client->osdc.osdmap->epoch);
	87	seq_printf(s, "flags%s%s\n",
	88	(client->osdc.osdmap->flags & CEPH_OSDMAP_NEARFULL) ?
	89	" NEARFULL" : "",
	90	(client->osdc.osdmap->flags & CEPH_OSDMAP_FULL) ?
	91	" FULL" : "");
4fc51be8	92	for (n = rb_first(&client->osdc.osdmap->pg_pools); n; n = rb_next(n)) {
76aa844d	93	struct ceph_pg_pool_info *pool =
4fc51be8	94	rb_entry(n, struct ceph_pg_pool_info, node);
76aa844d	95	seq_printf(s, "pg_pool %d pg_num %d / %d, lpg_num %d / %d\n",
4fc51be8	96	pool->id, pool->v.pg_num, pool->pg_num_mask,
76aa844d SW	97	pool->v.lpg_num, pool->lpg_num_mask);
	98	}
	99	for (i = 0; i < client->osdc.osdmap->max_osd; i++) {
	100	struct ceph_entity_addr *addr =
	101	&client->osdc.osdmap->osd_addr[i];
	102	int state = client->osdc.osdmap->osd_state[i];
	103	char sb[64];
	104
	105	seq_printf(s, "\tosd%d\t%s\t%3d%%\t(%s)\n",
	106	i, pr_addr(&addr->in_addr),
	107	((client->osdc.osdmap->osd_weight[i]*100) >> 16),
	108	ceph_osdmap_state_str(sb, sizeof(sb), state));
	109	}
	110	return 0;
	111	}
	112
	113	static int monc_show(struct seq_file s, void p)
	114	{
	115	struct ceph_client *client = s->private;
f8c76f6f	116	struct ceph_mon_generic_request *req;
76aa844d	117	struct ceph_mon_client *monc = &client->monc;
85ff03f6	118	struct rb_node *rp;
76aa844d SW	119
	120	mutex_lock(&monc->mutex);
	121
	122	if (monc->have_mdsmap)
	123	seq_printf(s, "have mdsmap %u\n", (unsigned)monc->have_mdsmap);
	124	if (monc->have_osdmap)
	125	seq_printf(s, "have osdmap %u\n", (unsigned)monc->have_osdmap);
	126	if (monc->want_next_osdmap)
	127	seq_printf(s, "want next osdmap\n");
	128
f8c76f6f YS	129	for (rp = rb_first(&monc->generic_request_tree); rp; rp = rb_next(rp)) {
	130	__u16 op;
	131	req = rb_entry(rp, struct ceph_mon_generic_request, node);
	132	op = le16_to_cpu(req->request->hdr.type);
	133	if (op == CEPH_MSG_STATFS)
	134	seq_printf(s, "%lld statfs\n", req->tid);
	135	else
	136	seq_printf(s, "%lld unknown\n", req->tid);
76aa844d	137	}
76aa844d	138
85ff03f6	139	mutex_unlock(&monc->mutex);
76aa844d SW	140	return 0;
	141	}
	142
	143	static int mdsc_show(struct seq_file s, void p)
	144	{
	145	struct ceph_client *client = s->private;
76aa844d	146	struct ceph_mds_client *mdsc = &client->mdsc;
44ca18f2 SW	147	struct ceph_mds_request *req;
44ca18f2 SW	148	struct rb_node *rp;
76aa844d SW	149	int pathlen;
	150	u64 pathbase;
	151	char *path;
	152
	153	mutex_lock(&mdsc->mutex);
44ca18f2 SW	154	for (rp = rb_first(&mdsc->request_tree); rp; rp = rb_next(rp)) {
44ca18f2 SW	155	req = rb_entry(rp, struct ceph_mds_request, r_node);
76aa844d SW	156
	157	if (req->r_request)
	158	seq_printf(s, "%lld\tmds%d\t", req->r_tid, req->r_mds);
	159	else
	160	seq_printf(s, "%lld\t(no request)\t", req->r_tid);
	161
	162	seq_printf(s, "%s", ceph_mds_op_name(req->r_op));
	163
	164	if (req->r_got_unsafe)
	165	seq_printf(s, "\t(unsafe)");
	166	else
	167	seq_printf(s, "\t");
	168
	169	if (req->r_inode) {
	170	seq_printf(s, " #%llx", ceph_ino(req->r_inode));
	171	} else if (req->r_dentry) {
	172	path = ceph_mdsc_build_path(req->r_dentry, &pathlen,
	173	&pathbase, 0);
	174	spin_lock(&req->r_dentry->d_lock);
	175	seq_printf(s, " #%llx/%.*s (%s)",
	176	ceph_ino(req->r_dentry->d_parent->d_inode),
	177	req->r_dentry->d_name.len,
	178	req->r_dentry->d_name.name,
	179	path ? path : "");
	180	spin_unlock(&req->r_dentry->d_lock);
	181	kfree(path);
	182	} else if (req->r_path1) {
	183	seq_printf(s, " #%llx/%s", req->r_ino1.ino,
	184	req->r_path1);
	185	}
	186
	187	if (req->r_old_dentry) {
	188	path = ceph_mdsc_build_path(req->r_old_dentry, &pathlen,
	189	&pathbase, 0);
	190	spin_lock(&req->r_old_dentry->d_lock);
	191	seq_printf(s, " #%llx/%.*s (%s)",
	192	ceph_ino(req->r_old_dentry->d_parent->d_inode),
	193	req->r_old_dentry->d_name.len,
	194	req->r_old_dentry->d_name.name,
	195	path ? path : "");
	196	spin_unlock(&req->r_old_dentry->d_lock);
	197	kfree(path);
	198	} else if (req->r_path2) {
	199	if (req->r_ino2.ino)
	200	seq_printf(s, " #%llx/%s", req->r_ino2.ino,
	201	req->r_path2);
	202	else
	203	seq_printf(s, " %s", req->r_path2);
	204	}
	205
	206	seq_printf(s, "\n");
	207	}
	208	mutex_unlock(&mdsc->mutex);
	209
	210	return 0;
	211	}
	212
	213	static int osdc_show(struct seq_file s, void pp)
	214	{
	215	struct ceph_client *client = s->private;
	216	struct ceph_osd_client *osdc = &client->osdc;
	217	struct rb_node *p;
	218
	219	mutex_lock(&osdc->request_mutex);
220	for (p = rb_first(&osdc->requests); p; p = rb_next(p)) {
221	struct ceph_osd_request *req;
222	struct ceph_osd_request_head *head;
223	struct ceph_osd_op *op;
224	int num_ops;
225	int opcode, olen;
226	int i;
227
228	req = rb_entry(p, struct ceph_osd_request, r_node);
229
7740a42f SW	230	seq_printf(s, "%lld\tosd%d\t%d.%x\t", req->r_tid,
	231	req->r_osd ? req->r_osd->o_osd : -1,
	232	le32_to_cpu(req->r_pgid.pool),
	233	le16_to_cpu(req->r_pgid.ps));
76aa844d SW	234
	235	head = req->r_request->front.iov_base;
	236	op = (void *)(head + 1);
	237
	238	num_ops = le16_to_cpu(head->num_ops);
	239	olen = le32_to_cpu(head->object_len);
	240	seq_printf(s, "%.*s", olen,
	241	(const char *)(head->ops + num_ops));
	242
	243	if (req->r_reassert_version.epoch)
	244	seq_printf(s, "\t%u'%llu",
	245	(unsigned)le32_to_cpu(req->r_reassert_version.epoch),
	246	le64_to_cpu(req->r_reassert_version.version));
	247	else
	248	seq_printf(s, "\t");
	249
	250	for (i = 0; i < num_ops; i++) {
	251	opcode = le16_to_cpu(op->op);
	252	seq_printf(s, "\t%s", ceph_osd_op_name(opcode));
	253	op++;
	254	}
	255
	256	seq_printf(s, "\n");
	257	}
	258	mutex_unlock(&osdc->request_mutex);
	259	return 0;
	260	}
	261
	262	static int caps_show(struct seq_file s, void p)
	263	{
bfaf148e	264	struct ceph_client *client = s->private;
85ccce43	265	int total, avail, used, reserved, min;
76aa844d	266
85ccce43	267	ceph_reservation_status(client, &total, &avail, &used, &reserved, &min);
76aa844d	268	seq_printf(s, "total\t\t%d\n"
85ccce43 SW	269	"avail\t\t%d\n"
	270	"used\t\t%d\n"
	271	"reserved\t%d\n"
	272	"min\t%d\n",
	273	total, avail, used, reserved, min);
76aa844d SW	274	return 0;
	275	}
	276
	277	static int dentry_lru_show(struct seq_file s, void ptr)
	278	{
	279	struct ceph_client *client = s->private;
	280	struct ceph_mds_client *mdsc = &client->mdsc;
	281	struct ceph_dentry_info *di;
	282
	283	spin_lock(&mdsc->dentry_lru_lock);
	284	list_for_each_entry(di, &mdsc->dentry_lru, lru) {
	285	struct dentry *dentry = di->dentry;
	286	seq_printf(s, "%p %p\t%.*s\n",
	287	di, dentry, dentry->d_name.len, dentry->d_name.name);
	288	}
	289	spin_unlock(&mdsc->dentry_lru_lock);
	290
	291	return 0;
	292	}
	293
213c99ee	294	#define DEFINE_SHOW_FUNC(name) \
76aa844d SW	295	static int name##_open(struct inode inode, struct file file) \
	296	{ \
	297	struct seq_file *sf; \
	298	int ret; \
	299	\
	300	ret = single_open(file, name, NULL); \
	301	sf = file->private_data; \
	302	sf->private = inode->i_private; \
	303	return ret; \
	304	} \
	305	\
	306	static const struct file_operations name##_fops = { \
	307	.open = name##_open, \
	308	.read = seq_read, \
	309	.llseek = seq_lseek, \
	310	.release = single_release, \
	311	};
	312
	313	DEFINE_SHOW_FUNC(monmap_show)
	314	DEFINE_SHOW_FUNC(mdsmap_show)
	315	DEFINE_SHOW_FUNC(osdmap_show)
	316	DEFINE_SHOW_FUNC(monc_show)
	317	DEFINE_SHOW_FUNC(mdsc_show)
	318	DEFINE_SHOW_FUNC(osdc_show)
	319	DEFINE_SHOW_FUNC(dentry_lru_show)
	320	DEFINE_SHOW_FUNC(caps_show)
	321
2baba250 YS	322	static int congestion_kb_set(void *data, u64 val)
	323	{
	324	struct ceph_client client = (struct ceph_client )data;
	325
	326	if (client)
	327	client->mount_args->congestion_kb = (int)val;
	328
	329	return 0;
	330	}
	331
	332	static int congestion_kb_get(void data, u64 val)
	333	{
	334	struct ceph_client client = (struct ceph_client )data;
	335
	336	if (client)
	337	*val = (u64)client->mount_args->congestion_kb;
	338
	339	return 0;
	340	}
	341
	342
	343	DEFINE_SIMPLE_ATTRIBUTE(congestion_kb_fops, congestion_kb_get,
	344	congestion_kb_set, "%llu\n");
	345
76aa844d SW	346	int __init ceph_debugfs_init(void)
	347	{
	348	ceph_debugfs_dir = debugfs_create_dir("ceph", NULL);
	349	if (!ceph_debugfs_dir)
	350	return -ENOMEM;
	351	return 0;
	352	}
	353
	354	void ceph_debugfs_cleanup(void)
	355	{
	356	debugfs_remove(ceph_debugfs_dir);
	357	}
	358
	359	int ceph_debugfs_client_init(struct ceph_client *client)
	360	{
	361	int ret = 0;
	362	char name[80];
	363
a8b763a9 SW	364	snprintf(name, sizeof(name), "%pU.client%lld", &client->fsid,
a8b763a9 SW	365	client->monc.auth->global_id);
76aa844d SW	366
	367	client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir);
	368	if (!client->debugfs_dir)
	369	goto out;
	370
	371	client->monc.debugfs_file = debugfs_create_file("monc",
	372	0600,
	373	client->debugfs_dir,
	374	client,
	375	&monc_show_fops);
	376	if (!client->monc.debugfs_file)
	377	goto out;
	378
	379	client->mdsc.debugfs_file = debugfs_create_file("mdsc",
	380	0600,
	381	client->debugfs_dir,
	382	client,
	383	&mdsc_show_fops);
	384	if (!client->mdsc.debugfs_file)
	385	goto out;
	386
	387	client->osdc.debugfs_file = debugfs_create_file("osdc",
	388	0600,
	389	client->debugfs_dir,
	390	client,
	391	&osdc_show_fops);
	392	if (!client->osdc.debugfs_file)
	393	goto out;
	394
	395	client->debugfs_monmap = debugfs_create_file("monmap",
	396	0600,
	397	client->debugfs_dir,
	398	client,
	399	&monmap_show_fops);
	400	if (!client->debugfs_monmap)
	401	goto out;
	402
	403	client->debugfs_mdsmap = debugfs_create_file("mdsmap",
	404	0600,
	405	client->debugfs_dir,
	406	client,
	407	&mdsmap_show_fops);
	408	if (!client->debugfs_mdsmap)
	409	goto out;
	410
	411	client->debugfs_osdmap = debugfs_create_file("osdmap",
	412	0600,
	413	client->debugfs_dir,
	414	client,
	415	&osdmap_show_fops);
	416	if (!client->debugfs_osdmap)
	417	goto out;
	418
	419	client->debugfs_dentry_lru = debugfs_create_file("dentry_lru",
	420	0600,
	421	client->debugfs_dir,
	422	client,
	423	&dentry_lru_show_fops);
	424	if (!client->debugfs_dentry_lru)
	425	goto out;
	426
	427	client->debugfs_caps = debugfs_create_file("caps",
	428	0400,
	429	client->debugfs_dir,
430	client,
431	&caps_show_fops);
432	if (!client->debugfs_caps)
433	goto out;
434
213c99ee SW	435	client->debugfs_congestion_kb =
	436	debugfs_create_file("writeback_congestion_kb",
	437	0600,
	438	client->debugfs_dir,
	439	client,
	440	&congestion_kb_fops);
2baba250 YS	441	if (!client->debugfs_congestion_kb)
	442	goto out;
	443
06edf046 SW	444	sprintf(name, "../../bdi/%s", dev_name(client->sb->s_bdi->dev));
	445	client->debugfs_bdi = debugfs_create_symlink("bdi", client->debugfs_dir,
	446	name);
	447
76aa844d SW	448	return 0;
	449
	450	out:
	451	ceph_debugfs_client_cleanup(client);
	452	return ret;
	453	}
	454
	455	void ceph_debugfs_client_cleanup(struct ceph_client *client)
	456	{
06edf046	457	debugfs_remove(client->debugfs_bdi);
76aa844d SW	458	debugfs_remove(client->debugfs_caps);
	459	debugfs_remove(client->debugfs_dentry_lru);
	460	debugfs_remove(client->debugfs_osdmap);
	461	debugfs_remove(client->debugfs_mdsmap);
	462	debugfs_remove(client->debugfs_monmap);
	463	debugfs_remove(client->osdc.debugfs_file);
	464	debugfs_remove(client->mdsc.debugfs_file);
	465	debugfs_remove(client->monc.debugfs_file);
2baba250	466	debugfs_remove(client->debugfs_congestion_kb);
76aa844d SW	467	debugfs_remove(client->debugfs_dir);
	468	}
	469
213c99ee	470	#else /* CONFIG_DEBUG_FS */
039934b8 SW	471
	472	int __init ceph_debugfs_init(void)
	473	{
	474	return 0;
	475	}
	476
	477	void ceph_debugfs_cleanup(void)
	478	{
	479	}
	480
	481	int ceph_debugfs_client_init(struct ceph_client *client)
	482	{
	483	return 0;
	484	}
	485
	486	void ceph_debugfs_client_cleanup(struct ceph_client *client)
	487	{
	488	}
	489
213c99ee	490	#endif /* CONFIG_DEBUG_FS */