[deliverable/linux.git] / fs / ceph / debugfs.c

#include "ceph_debug.h"

#include <linux/device.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;

	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 (i = 0; i < client->osdc.osdmap->num_pools; i++) {
		struct ceph_pg_pool_info *pool =
			&client->osdc.osdmap->pg_pool[i];
		seq_printf(s, "pg_pool %d pg_num %d / %d, lpg_num %d / %d\n",
			   i, 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_statfs_request *req;
	u64 nexttid = 0;
	int got;
	struct ceph_mon_client *monc = &client->monc;

	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");

	while (nexttid < monc->last_tid) {
		got = radix_tree_gang_lookup(&monc->statfs_request_tree,
					     (void **)&req, nexttid, 1);
		if (got == 0)
			break;
		nexttid = req->tid + 1;

		seq_printf(s, "%lld statfs\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_request *req;
	u64 nexttid = 0;
	int got;
	struct ceph_mds_client *mdsc = &client->mdsc;
	int pathlen;
	u64 pathbase;
	char *path;

	mutex_lock(&mdsc->mutex);
	while (nexttid < mdsc->last_tid) {
		got = radix_tree_gang_lookup(&mdsc->request_tree,
					     (void **)&req, nexttid, 1);
		if (got == 0)
			break;
		nexttid = req->r_tid + 1;

		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", req->r_tid,
			   req->r_osd ? req->r_osd->o_osd : -1);

		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 = p;
	int total, avail, used, reserved;

	ceph_reservation_status(client, &total, &avail, &used, &reserved);
	seq_printf(s, "total\t\t%d\n"
		      "avail\t\t%d\n"
		      "used\t\t%d\n"
		      "reserved\t%d\n",
		   total, avail, used, reserved);
	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), FSID_FORMAT ".client%lld",
		 PR_FSID(&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>
76aa844d SW	4	#include <linux/module.h>
	5	#include <linux/ctype.h>
	6	#include <linux/debugfs.h>
	7	#include <linux/seq_file.h>
	8
	9	#include "super.h"
	10	#include "mds_client.h"
0743304d SW	11	#include "mon_client.h"
0743304d SW	12	#include "auth.h"
76aa844d	13
039934b8 SW	14	#ifdef CONFIG_DEBUG_FS
039934b8 SW	15
76aa844d SW	16	/*
	17	* Implement /sys/kernel/debug/ceph fun
	18	*
	19	* /sys/kernel/debug/ceph/client* - an instance of the ceph client
	20	* .../osdmap - current osdmap
	21	* .../mdsmap - current mdsmap
	22	* .../monmap - current monmap
	23	* .../osdc - active osd requests
	24	* .../mdsc - active mds requests
	25	* .../monc - mon client state
	26	* .../dentry_lru - dump contents of dentry lru
	27	* .../caps - expose cap (reservation) stats
06edf046	28	* .../bdi - symlink to ../../bdi/something
76aa844d SW	29	*/
	30
	31	static struct dentry *ceph_debugfs_dir;
	32
	33	static int monmap_show(struct seq_file s, void p)
	34	{
	35	int i;
	36	struct ceph_client *client = s->private;
	37
	38	if (client->monc.monmap == NULL)
	39	return 0;
	40
	41	seq_printf(s, "epoch %d\n", client->monc.monmap->epoch);
	42	for (i = 0; i < client->monc.monmap->num_mon; i++) {
	43	struct ceph_entity_inst *inst =
	44	&client->monc.monmap->mon_inst[i];
	45
	46	seq_printf(s, "\t%s%lld\t%s\n",
	47	ENTITY_NAME(inst->name),
	48	pr_addr(&inst->addr.in_addr));
	49	}
	50	return 0;
	51	}
	52
	53	static int mdsmap_show(struct seq_file s, void p)
	54	{
	55	int i;
	56	struct ceph_client *client = s->private;
	57
	58	if (client->mdsc.mdsmap == NULL)
	59	return 0;
	60	seq_printf(s, "epoch %d\n", client->mdsc.mdsmap->m_epoch);
	61	seq_printf(s, "root %d\n", client->mdsc.mdsmap->m_root);
	62	seq_printf(s, "session_timeout %d\n",
	63	client->mdsc.mdsmap->m_session_timeout);
	64	seq_printf(s, "session_autoclose %d\n",
	65	client->mdsc.mdsmap->m_session_autoclose);
	66	for (i = 0; i < client->mdsc.mdsmap->m_max_mds; i++) {
	67	struct ceph_entity_addr *addr =
	68	&client->mdsc.mdsmap->m_info[i].addr;
	69	int state = client->mdsc.mdsmap->m_info[i].state;
	70
	71	seq_printf(s, "\tmds%d\t%s\t(%s)\n", i, pr_addr(&addr->in_addr),
	72	ceph_mds_state_name(state));
	73	}
	74	return 0;
	75	}
	76
	77	static int osdmap_show(struct seq_file s, void p)
	78	{
	79	int i;
	80	struct ceph_client *client = s->private;
	81
	82	if (client->osdc.osdmap == NULL)
	83	return 0;
	84	seq_printf(s, "epoch %d\n", client->osdc.osdmap->epoch);
	85	seq_printf(s, "flags%s%s\n",
	86	(client->osdc.osdmap->flags & CEPH_OSDMAP_NEARFULL) ?
	87	" NEARFULL" : "",
	88	(client->osdc.osdmap->flags & CEPH_OSDMAP_FULL) ?
	89	" FULL" : "");
	90	for (i = 0; i < client->osdc.osdmap->num_pools; i++) {
	91	struct ceph_pg_pool_info *pool =
	92	&client->osdc.osdmap->pg_pool[i];
93	seq_printf(s, "pg_pool %d pg_num %d / %d, lpg_num %d / %d\n",
94	i, pool->v.pg_num, pool->pg_num_mask,
95	pool->v.lpg_num, pool->lpg_num_mask);
96	}
97	for (i = 0; i < client->osdc.osdmap->max_osd; i++) {
98	struct ceph_entity_addr *addr =
99	&client->osdc.osdmap->osd_addr[i];
100	int state = client->osdc.osdmap->osd_state[i];
101	char sb[64];
102
103	seq_printf(s, "\tosd%d\t%s\t%3d%%\t(%s)\n",
104	i, pr_addr(&addr->in_addr),
105	((client->osdc.osdmap->osd_weight[i]*100) >> 16),
106	ceph_osdmap_state_str(sb, sizeof(sb), state));
107	}
108	return 0;
109	}
110
111	static int monc_show(struct seq_file s, void p)
112	{
113	struct ceph_client *client = s->private;
114	struct ceph_mon_statfs_request *req;
115	u64 nexttid = 0;
116	int got;
117	struct ceph_mon_client *monc = &client->monc;
118
119	mutex_lock(&monc->mutex);
120
121	if (monc->have_mdsmap)
122	seq_printf(s, "have mdsmap %u\n", (unsigned)monc->have_mdsmap);
123	if (monc->have_osdmap)
124	seq_printf(s, "have osdmap %u\n", (unsigned)monc->have_osdmap);
125	if (monc->want_next_osdmap)
126	seq_printf(s, "want next osdmap\n");
127
128	while (nexttid < monc->last_tid) {
129	got = radix_tree_gang_lookup(&monc->statfs_request_tree,
130	(void **)&req, nexttid, 1);
131	if (got == 0)
132	break;
133	nexttid = req->tid + 1;
134
135	seq_printf(s, "%lld statfs\n", req->tid);
136	}
137	mutex_unlock(&monc->mutex);
138
139	return 0;
140	}
141
142	static int mdsc_show(struct seq_file s, void p)
143	{
144	struct ceph_client *client = s->private;
145	struct ceph_mds_request *req;
146	u64 nexttid = 0;
147	int got;
148	struct ceph_mds_client *mdsc = &client->mdsc;
149	int pathlen;
150	u64 pathbase;
151	char *path;
152
153	mutex_lock(&mdsc->mutex);
154	while (nexttid < mdsc->last_tid) {
155	got = radix_tree_gang_lookup(&mdsc->request_tree,
156	(void **)&req, nexttid, 1);
157	if (got == 0)
158	break;
159	nexttid = req->r_tid + 1;
160
161	if (req->r_request)
162	seq_printf(s, "%lld\tmds%d\t", req->r_tid, req->r_mds);
163	else
164	seq_printf(s, "%lld\t(no request)\t", req->r_tid);
165
166	seq_printf(s, "%s", ceph_mds_op_name(req->r_op));
167
168	if (req->r_got_unsafe)
169	seq_printf(s, "\t(unsafe)");
170	else
171	seq_printf(s, "\t");
172
173	if (req->r_inode) {
174	seq_printf(s, " #%llx", ceph_ino(req->r_inode));
175	} else if (req->r_dentry) {
176	path = ceph_mdsc_build_path(req->r_dentry, &pathlen,
177	&pathbase, 0);
178	spin_lock(&req->r_dentry->d_lock);
179	seq_printf(s, " #%llx/%.*s (%s)",
180	ceph_ino(req->r_dentry->d_parent->d_inode),
181	req->r_dentry->d_name.len,
182	req->r_dentry->d_name.name,
183	path ? path : "");
184	spin_unlock(&req->r_dentry->d_lock);
185	kfree(path);
186	} else if (req->r_path1) {
187	seq_printf(s, " #%llx/%s", req->r_ino1.ino,
188	req->r_path1);
189	}
190
191	if (req->r_old_dentry) {
192	path = ceph_mdsc_build_path(req->r_old_dentry, &pathlen,
193	&pathbase, 0);
194	spin_lock(&req->r_old_dentry->d_lock);
195	seq_printf(s, " #%llx/%.*s (%s)",
196	ceph_ino(req->r_old_dentry->d_parent->d_inode),
197	req->r_old_dentry->d_name.len,
198	req->r_old_dentry->d_name.name,
199	path ? path : "");
200	spin_unlock(&req->r_old_dentry->d_lock);
201	kfree(path);
202	} else if (req->r_path2) {
203	if (req->r_ino2.ino)
204	seq_printf(s, " #%llx/%s", req->r_ino2.ino,
205	req->r_path2);
206	else
207	seq_printf(s, " %s", req->r_path2);
208	}
209
210	seq_printf(s, "\n");
211	}
212	mutex_unlock(&mdsc->mutex);
213
214	return 0;
215	}
216
217	static int osdc_show(struct seq_file s, void pp)
218	{
219	struct ceph_client *client = s->private;
220	struct ceph_osd_client *osdc = &client->osdc;
221	struct rb_node *p;
222
223	mutex_lock(&osdc->request_mutex);
224	for (p = rb_first(&osdc->requests); p; p = rb_next(p)) {
225	struct ceph_osd_request *req;
226	struct ceph_osd_request_head *head;
227	struct ceph_osd_op *op;
228	int num_ops;
229	int opcode, olen;
230	int i;
231
232	req = rb_entry(p, struct ceph_osd_request, r_node);
233
234	seq_printf(s, "%lld\tosd%d\t", req->r_tid,
235	req->r_osd ? req->r_osd->o_osd : -1);
236
237	head = req->r_request->front.iov_base;
238	op = (void *)(head + 1);
239
240	num_ops = le16_to_cpu(head->num_ops);
241	olen = le32_to_cpu(head->object_len);
242	seq_printf(s, "%.*s", olen,
243	(const char *)(head->ops + num_ops));
244
245	if (req->r_reassert_version.epoch)
246	seq_printf(s, "\t%u'%llu",
247	(unsigned)le32_to_cpu(req->r_reassert_version.epoch),
248	le64_to_cpu(req->r_reassert_version.version));
249	else
250	seq_printf(s, "\t");
251
252	for (i = 0; i < num_ops; i++) {
253	opcode = le16_to_cpu(op->op);
254	seq_printf(s, "\t%s", ceph_osd_op_name(opcode));
255	op++;
256	}
257
258	seq_printf(s, "\n");
259	}
260	mutex_unlock(&osdc->request_mutex);
261	return 0;
262	}
263
264	static int caps_show(struct seq_file s, void p)
265	{
266	struct ceph_client *client = p;
267	int total, avail, used, reserved;
268
269	ceph_reservation_status(client, &total, &avail, &used, &reserved);
270	seq_printf(s, "total\t\t%d\n"
271	"avail\t\t%d\n"
272	"used\t\t%d\n"
273	"reserved\t%d\n",
274	total, avail, used, reserved);
275	return 0;
276	}
277
278	static int dentry_lru_show(struct seq_file s, void ptr)
279	{
280	struct ceph_client *client = s->private;
281	struct ceph_mds_client *mdsc = &client->mdsc;
282	struct ceph_dentry_info *di;
283
284	spin_lock(&mdsc->dentry_lru_lock);
285	list_for_each_entry(di, &mdsc->dentry_lru, lru) {
286	struct dentry *dentry = di->dentry;
287	seq_printf(s, "%p %p\t%.*s\n",
288	di, dentry, dentry->d_name.len, dentry->d_name.name);
289	}
290	spin_unlock(&mdsc->dentry_lru_lock);
291
292	return 0;
293	}
294
295	#define DEFINE_SHOW_FUNC(name) \
296	static int name##_open(struct inode inode, struct file file) \
297	{ \
298	struct seq_file *sf; \
299	int ret; \
300	\
301	ret = single_open(file, name, NULL); \
302	sf = file->private_data; \
303	sf->private = inode->i_private; \
304	return ret; \
305	} \
306	\
307	static const struct file_operations name##_fops = { \
308	.open = name##_open, \
309	.read = seq_read, \
310	.llseek = seq_lseek, \
311	.release = single_release, \
312	};
313
314	DEFINE_SHOW_FUNC(monmap_show)
315	DEFINE_SHOW_FUNC(mdsmap_show)
316	DEFINE_SHOW_FUNC(osdmap_show)
317	DEFINE_SHOW_FUNC(monc_show)
318	DEFINE_SHOW_FUNC(mdsc_show)
319	DEFINE_SHOW_FUNC(osdc_show)
320	DEFINE_SHOW_FUNC(dentry_lru_show)
321	DEFINE_SHOW_FUNC(caps_show)
322
2baba250 YS	323	static int congestion_kb_set(void *data, u64 val)
	324	{
	325	struct ceph_client client = (struct ceph_client )data;
	326
	327	if (client)
	328	client->mount_args->congestion_kb = (int)val;
	329
	330	return 0;
	331	}
	332
	333	static int congestion_kb_get(void data, u64 val)
	334	{
	335	struct ceph_client client = (struct ceph_client )data;
	336
	337	if (client)
	338	*val = (u64)client->mount_args->congestion_kb;
	339
	340	return 0;
	341	}
	342
	343
	344	DEFINE_SIMPLE_ATTRIBUTE(congestion_kb_fops, congestion_kb_get,
	345	congestion_kb_set, "%llu\n");
	346
76aa844d SW	347	int __init ceph_debugfs_init(void)
	348	{
	349	ceph_debugfs_dir = debugfs_create_dir("ceph", NULL);
	350	if (!ceph_debugfs_dir)
	351	return -ENOMEM;
	352	return 0;
	353	}
	354
	355	void ceph_debugfs_cleanup(void)
	356	{
	357	debugfs_remove(ceph_debugfs_dir);
	358	}
	359
	360	int ceph_debugfs_client_init(struct ceph_client *client)
	361	{
	362	int ret = 0;
	363	char name[80];
	364
	365	snprintf(name, sizeof(name), FSID_FORMAT ".client%lld",
0743304d	366	PR_FSID(&client->fsid), client->monc.auth->global_id);
76aa844d SW	367
	368	client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir);
	369	if (!client->debugfs_dir)
	370	goto out;
	371
	372	client->monc.debugfs_file = debugfs_create_file("monc",
	373	0600,
	374	client->debugfs_dir,
	375	client,
	376	&monc_show_fops);
	377	if (!client->monc.debugfs_file)
	378	goto out;
	379
	380	client->mdsc.debugfs_file = debugfs_create_file("mdsc",
	381	0600,
	382	client->debugfs_dir,
	383	client,
	384	&mdsc_show_fops);
	385	if (!client->mdsc.debugfs_file)
	386	goto out;
	387
	388	client->osdc.debugfs_file = debugfs_create_file("osdc",
	389	0600,
	390	client->debugfs_dir,
	391	client,
	392	&osdc_show_fops);
	393	if (!client->osdc.debugfs_file)
	394	goto out;
	395
	396	client->debugfs_monmap = debugfs_create_file("monmap",
	397	0600,
	398	client->debugfs_dir,
	399	client,
	400	&monmap_show_fops);
	401	if (!client->debugfs_monmap)
	402	goto out;
	403
	404	client->debugfs_mdsmap = debugfs_create_file("mdsmap",
	405	0600,
	406	client->debugfs_dir,
	407	client,
	408	&mdsmap_show_fops);
	409	if (!client->debugfs_mdsmap)
	410	goto out;
	411
	412	client->debugfs_osdmap = debugfs_create_file("osdmap",
	413	0600,
	414	client->debugfs_dir,
	415	client,
	416	&osdmap_show_fops);
	417	if (!client->debugfs_osdmap)
	418	goto out;
	419
	420	client->debugfs_dentry_lru = debugfs_create_file("dentry_lru",
	421	0600,
	422	client->debugfs_dir,
	423	client,
	424	&dentry_lru_show_fops);
	425	if (!client->debugfs_dentry_lru)
	426	goto out;
	427
	428	client->debugfs_caps = debugfs_create_file("caps",
	429	0400,
	430	client->debugfs_dir,
431	client,
432	&caps_show_fops);
433	if (!client->debugfs_caps)
434	goto out;
435
2baba250 YS	436	client->debugfs_congestion_kb = debugfs_create_file("writeback_congestion_kb",
	437	0600,
	438	client->debugfs_dir,
	439	client,
	440	&congestion_kb_fops);
	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
039934b8 SW	470	#else // CONFIG_DEBUG_FS
	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
	490	#endif // CONFIG_DEBUG_FS