[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);
			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 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);
f44c3890 DC	174	if (IS_ERR(path))
f44c3890 DC	175	path = NULL;
76aa844d SW	176	spin_lock(&req->r_dentry->d_lock);
	177	seq_printf(s, " #%llx/%.*s (%s)",
	178	ceph_ino(req->r_dentry->d_parent->d_inode),
	179	req->r_dentry->d_name.len,
	180	req->r_dentry->d_name.name,
	181	path ? path : "");
	182	spin_unlock(&req->r_dentry->d_lock);
	183	kfree(path);
	184	} else if (req->r_path1) {
	185	seq_printf(s, " #%llx/%s", req->r_ino1.ino,
	186	req->r_path1);
	187	}
	188
	189	if (req->r_old_dentry) {
	190	path = ceph_mdsc_build_path(req->r_old_dentry, &pathlen,
	191	&pathbase, 0);
f44c3890 DC	192	if (IS_ERR(path))
f44c3890 DC	193	path = NULL;
76aa844d SW	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
7740a42f SW	234	seq_printf(s, "%lld\tosd%d\t%d.%x\t", req->r_tid,
	235	req->r_osd ? req->r_osd->o_osd : -1,
	236	le32_to_cpu(req->r_pgid.pool),
	237	le16_to_cpu(req->r_pgid.ps));
76aa844d SW	238
	239	head = req->r_request->front.iov_base;
	240	op = (void *)(head + 1);
	241
	242	num_ops = le16_to_cpu(head->num_ops);
	243	olen = le32_to_cpu(head->object_len);
	244	seq_printf(s, "%.*s", olen,
	245	(const char *)(head->ops + num_ops));
	246
	247	if (req->r_reassert_version.epoch)
	248	seq_printf(s, "\t%u'%llu",
	249	(unsigned)le32_to_cpu(req->r_reassert_version.epoch),
	250	le64_to_cpu(req->r_reassert_version.version));
	251	else
	252	seq_printf(s, "\t");
	253
	254	for (i = 0; i < num_ops; i++) {
	255	opcode = le16_to_cpu(op->op);
	256	seq_printf(s, "\t%s", ceph_osd_op_name(opcode));
	257	op++;
	258	}
	259
	260	seq_printf(s, "\n");
	261	}
	262	mutex_unlock(&osdc->request_mutex);
	263	return 0;
	264	}
	265
	266	static int caps_show(struct seq_file s, void p)
	267	{
bfaf148e	268	struct ceph_client *client = s->private;
85ccce43	269	int total, avail, used, reserved, min;
76aa844d	270
85ccce43	271	ceph_reservation_status(client, &total, &avail, &used, &reserved, &min);
76aa844d	272	seq_printf(s, "total\t\t%d\n"
85ccce43 SW	273	"avail\t\t%d\n"
	274	"used\t\t%d\n"
	275	"reserved\t%d\n"
	276	"min\t%d\n",
	277	total, avail, used, reserved, min);
76aa844d SW	278	return 0;
	279	}
	280
	281	static int dentry_lru_show(struct seq_file s, void ptr)
	282	{
	283	struct ceph_client *client = s->private;
	284	struct ceph_mds_client *mdsc = &client->mdsc;
	285	struct ceph_dentry_info *di;
	286
	287	spin_lock(&mdsc->dentry_lru_lock);
	288	list_for_each_entry(di, &mdsc->dentry_lru, lru) {
	289	struct dentry *dentry = di->dentry;
	290	seq_printf(s, "%p %p\t%.*s\n",
	291	di, dentry, dentry->d_name.len, dentry->d_name.name);
	292	}
	293	spin_unlock(&mdsc->dentry_lru_lock);
	294
	295	return 0;
	296	}
	297
213c99ee	298	#define DEFINE_SHOW_FUNC(name) \
76aa844d SW	299	static int name##_open(struct inode inode, struct file file) \
	300	{ \
	301	struct seq_file *sf; \
	302	int ret; \
	303	\
	304	ret = single_open(file, name, NULL); \
	305	sf = file->private_data; \
	306	sf->private = inode->i_private; \
	307	return ret; \
	308	} \
	309	\
	310	static const struct file_operations name##_fops = { \
	311	.open = name##_open, \
	312	.read = seq_read, \
	313	.llseek = seq_lseek, \
	314	.release = single_release, \
	315	};
	316
	317	DEFINE_SHOW_FUNC(monmap_show)
	318	DEFINE_SHOW_FUNC(mdsmap_show)
	319	DEFINE_SHOW_FUNC(osdmap_show)
	320	DEFINE_SHOW_FUNC(monc_show)
	321	DEFINE_SHOW_FUNC(mdsc_show)
	322	DEFINE_SHOW_FUNC(osdc_show)
	323	DEFINE_SHOW_FUNC(dentry_lru_show)
	324	DEFINE_SHOW_FUNC(caps_show)
	325
2baba250 YS	326	static int congestion_kb_set(void *data, u64 val)
	327	{
	328	struct ceph_client client = (struct ceph_client )data;
	329
	330	if (client)
	331	client->mount_args->congestion_kb = (int)val;
	332
	333	return 0;
	334	}
	335
	336	static int congestion_kb_get(void data, u64 val)
	337	{
	338	struct ceph_client client = (struct ceph_client )data;
	339
	340	if (client)
	341	*val = (u64)client->mount_args->congestion_kb;
	342
	343	return 0;
	344	}
	345
	346
	347	DEFINE_SIMPLE_ATTRIBUTE(congestion_kb_fops, congestion_kb_get,
	348	congestion_kb_set, "%llu\n");
	349
76aa844d SW	350	int __init ceph_debugfs_init(void)
	351	{
	352	ceph_debugfs_dir = debugfs_create_dir("ceph", NULL);
	353	if (!ceph_debugfs_dir)
	354	return -ENOMEM;
	355	return 0;
	356	}
	357
	358	void ceph_debugfs_cleanup(void)
	359	{
	360	debugfs_remove(ceph_debugfs_dir);
	361	}
	362
	363	int ceph_debugfs_client_init(struct ceph_client *client)
	364	{
	365	int ret = 0;
	366	char name[80];
	367
a8b763a9 SW	368	snprintf(name, sizeof(name), "%pU.client%lld", &client->fsid,
a8b763a9 SW	369	client->monc.auth->global_id);
76aa844d SW	370
	371	client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir);
	372	if (!client->debugfs_dir)
	373	goto out;
	374
	375	client->monc.debugfs_file = debugfs_create_file("monc",
	376	0600,
	377	client->debugfs_dir,
	378	client,
	379	&monc_show_fops);
	380	if (!client->monc.debugfs_file)
	381	goto out;
	382
	383	client->mdsc.debugfs_file = debugfs_create_file("mdsc",
	384	0600,
	385	client->debugfs_dir,
	386	client,
	387	&mdsc_show_fops);
	388	if (!client->mdsc.debugfs_file)
	389	goto out;
	390
	391	client->osdc.debugfs_file = debugfs_create_file("osdc",
	392	0600,
	393	client->debugfs_dir,
	394	client,
	395	&osdc_show_fops);
	396	if (!client->osdc.debugfs_file)
	397	goto out;
	398
	399	client->debugfs_monmap = debugfs_create_file("monmap",
	400	0600,
	401	client->debugfs_dir,
	402	client,
	403	&monmap_show_fops);
	404	if (!client->debugfs_monmap)
	405	goto out;
	406
	407	client->debugfs_mdsmap = debugfs_create_file("mdsmap",
	408	0600,
	409	client->debugfs_dir,
	410	client,
	411	&mdsmap_show_fops);
	412	if (!client->debugfs_mdsmap)
	413	goto out;
	414
	415	client->debugfs_osdmap = debugfs_create_file("osdmap",
	416	0600,
	417	client->debugfs_dir,
	418	client,
	419	&osdmap_show_fops);
	420	if (!client->debugfs_osdmap)
	421	goto out;
	422
	423	client->debugfs_dentry_lru = debugfs_create_file("dentry_lru",
	424	0600,
	425	client->debugfs_dir,
	426	client,
	427	&dentry_lru_show_fops);
	428	if (!client->debugfs_dentry_lru)
	429	goto out;
	430
	431	client->debugfs_caps = debugfs_create_file("caps",
	432	0400,
	433	client->debugfs_dir,
434	client,
435	&caps_show_fops);
436	if (!client->debugfs_caps)
437	goto out;
438
213c99ee SW	439	client->debugfs_congestion_kb =
	440	debugfs_create_file("writeback_congestion_kb",
	441	0600,
	442	client->debugfs_dir,
	443	client,
	444	&congestion_kb_fops);
2baba250 YS	445	if (!client->debugfs_congestion_kb)
	446	goto out;
	447
06edf046 SW	448	sprintf(name, "../../bdi/%s", dev_name(client->sb->s_bdi->dev));
	449	client->debugfs_bdi = debugfs_create_symlink("bdi", client->debugfs_dir,
	450	name);
	451
76aa844d SW	452	return 0;
	453
	454	out:
	455	ceph_debugfs_client_cleanup(client);
	456	return ret;
	457	}
	458
	459	void ceph_debugfs_client_cleanup(struct ceph_client *client)
	460	{
06edf046	461	debugfs_remove(client->debugfs_bdi);
76aa844d SW	462	debugfs_remove(client->debugfs_caps);
	463	debugfs_remove(client->debugfs_dentry_lru);
	464	debugfs_remove(client->debugfs_osdmap);
	465	debugfs_remove(client->debugfs_mdsmap);
	466	debugfs_remove(client->debugfs_monmap);
	467	debugfs_remove(client->osdc.debugfs_file);
	468	debugfs_remove(client->mdsc.debugfs_file);
	469	debugfs_remove(client->monc.debugfs_file);
2baba250	470	debugfs_remove(client->debugfs_congestion_kb);
76aa844d SW	471	debugfs_remove(client->debugfs_dir);
	472	}
	473
213c99ee	474	#else /* CONFIG_DEBUG_FS */
039934b8 SW	475
	476	int __init ceph_debugfs_init(void)
	477	{
	478	return 0;
	479	}
	480
	481	void ceph_debugfs_cleanup(void)
	482	{
	483	}
	484
	485	int ceph_debugfs_client_init(struct ceph_client *client)
	486	{
	487	return 0;
	488	}
	489
	490	void ceph_debugfs_client_cleanup(struct ceph_client *client)
	491	{
	492	}
	493
213c99ee	494	#endif /* CONFIG_DEBUG_FS */