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

// SPDX-License-Identifier: GPL-2.0
#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/math64.h>
#include <linux/ktime.h>

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

#include "super.h"

#ifdef CONFIG_DEBUG_FS

#include "mds_client.h"
#include "metric.h"

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

	if (!fsc->mdsc || !fsc->mdsc->mdsmap)
		return 0;
	mdsmap = fsc->mdsc->mdsmap;
	seq_printf(s, "epoch %d\n", mdsmap->m_epoch);
	seq_printf(s, "root %d\n", mdsmap->m_root);
	seq_printf(s, "max_mds %d\n", mdsmap->m_max_mds);
	seq_printf(s, "session_timeout %d\n", mdsmap->m_session_timeout);
	seq_printf(s, "session_autoclose %d\n", mdsmap->m_session_autoclose);
	for (i = 0; i < mdsmap->possible_max_rank; i++) {
		struct ceph_entity_addr *addr = &mdsmap->m_info[i].addr;
		int state = mdsmap->m_info[i].state;
		seq_printf(s, "\tmds%d\t%s\t(%s)\n", i,
			       ceph_pr_addr(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 = 0;
	u64 pathbase;
	char *path;

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

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

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

		if (test_bit(CEPH_MDS_R_GOT_UNSAFE, &req->r_req_flags))
			seq_puts(s, "\t(unsafe)");
		else
			seq_puts(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/%pd (%s)",
				   ceph_ino(d_inode(req->r_dentry->d_parent)),
				   req->r_dentry,
				   path ? path : "");
			spin_unlock(&req->r_dentry->d_lock);
			ceph_mdsc_free_path(path, pathlen);
		} else if (req->r_path1) {
			seq_printf(s, " #%llx/%s", req->r_ino1.ino,
				   req->r_path1);
		} else {
			seq_printf(s, " #%llx", req->r_ino1.ino);
		}

		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/%pd (%s)",
				   req->r_old_dentry_dir ?
				   ceph_ino(req->r_old_dentry_dir) : 0,
				   req->r_old_dentry,
				   path ? path : "");
			spin_unlock(&req->r_old_dentry->d_lock);
			ceph_mdsc_free_path(path, pathlen);
		} else if (req->r_path2 && req->r_op != CEPH_MDS_OP_SYMLINK) {
			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_puts(s, "\n");
	}
	mutex_unlock(&mdsc->mutex);

	return 0;
}

#define CEPH_METRIC_SHOW(name, total, avg, min, max, sq) {		\
	s64 _total, _avg, _min, _max, _sq, _st;				\
	_avg = ktime_to_us(avg);					\
	_min = ktime_to_us(min == KTIME_MAX ? 0 : min);			\
	_max = ktime_to_us(max);					\
	_total = total - 1;						\
	_sq = _total > 0 ? DIV64_U64_ROUND_CLOSEST(sq, _total) : 0;	\
	_st = int_sqrt64(_sq);						\
	_st = ktime_to_us(_st);						\
	seq_printf(s, "%-14s%-12lld%-16lld%-16lld%-16lld%lld\n",	\
		   name, total, _avg, _min, _max, _st);			\
}

static int metric_show(struct seq_file *s, void *p)
{
	struct ceph_fs_client *fsc = s->private;
	struct ceph_mds_client *mdsc = fsc->mdsc;
	struct ceph_client_metric *m = &mdsc->metric;
	int nr_caps = 0;
	s64 total, sum, avg, min, max, sq;

	seq_printf(s, "item          total       avg_lat(us)     min_lat(us)     max_lat(us)     stdev(us)\n");
	seq_printf(s, "-----------------------------------------------------------------------------------\n");

	spin_lock(&m->read_latency_lock);
	total = m->total_reads;
	sum = m->read_latency_sum;
	avg = total > 0 ? DIV64_U64_ROUND_CLOSEST(sum, total) : 0;
	min = m->read_latency_min;
	max = m->read_latency_max;
	sq = m->read_latency_sq_sum;
	spin_unlock(&m->read_latency_lock);
	CEPH_METRIC_SHOW("read", total, avg, min, max, sq);

	spin_lock(&m->write_latency_lock);
	total = m->total_writes;
	sum = m->write_latency_sum;
	avg = total > 0 ? DIV64_U64_ROUND_CLOSEST(sum, total) : 0;
	min = m->write_latency_min;
	max = m->write_latency_max;
	sq = m->write_latency_sq_sum;
	spin_unlock(&m->write_latency_lock);
	CEPH_METRIC_SHOW("write", total, avg, min, max, sq);

	spin_lock(&m->metadata_latency_lock);
	total = m->total_metadatas;
	sum = m->metadata_latency_sum;
	avg = total > 0 ? DIV64_U64_ROUND_CLOSEST(sum, total) : 0;
	min = m->metadata_latency_min;
	max = m->metadata_latency_max;
	sq = m->metadata_latency_sq_sum;
	spin_unlock(&m->metadata_latency_lock);
	CEPH_METRIC_SHOW("metadata", total, avg, min, max, sq);

	seq_printf(s, "\n");
	seq_printf(s, "item          total           miss            hit\n");
	seq_printf(s, "-------------------------------------------------\n");

	seq_printf(s, "%-14s%-16lld%-16lld%lld\n", "d_lease",
		   atomic64_read(&m->total_dentries),
		   percpu_counter_sum(&m->d_lease_mis),
		   percpu_counter_sum(&m->d_lease_hit));

	nr_caps = atomic64_read(&m->total_caps);
	seq_printf(s, "%-14s%-16d%-16lld%lld\n", "caps", nr_caps,
		   percpu_counter_sum(&m->i_caps_mis),
		   percpu_counter_sum(&m->i_caps_hit));

	return 0;
}

static int caps_show_cb(struct inode *inode, struct ceph_cap *cap, void *p)
{
	struct seq_file *s = p;

	seq_printf(s, "0x%-17lx%-17s%-17s\n", inode->i_ino,
		   ceph_cap_string(cap->issued),
		   ceph_cap_string(cap->implemented));
	return 0;
}

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

	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\t%d\n\n",
		   total, avail, used, reserved, min);
	seq_printf(s, "ino                issued           implemented\n");
	seq_printf(s, "-----------------------------------------------\n");

	mutex_lock(&mdsc->mutex);
	for (i = 0; i < mdsc->max_sessions; i++) {
		struct ceph_mds_session *session;

		session = __ceph_lookup_mds_session(mdsc, i);
		if (!session)
			continue;
		mutex_unlock(&mdsc->mutex);
		mutex_lock(&session->s_mutex);
		ceph_iterate_session_caps(session, caps_show_cb, s);
		mutex_unlock(&session->s_mutex);
		ceph_put_mds_session(session);
		mutex_lock(&mdsc->mutex);
	}
	mutex_unlock(&mdsc->mutex);

	seq_printf(s, "\n\nWaiters:\n--------\n");
	seq_printf(s, "tgid         ino                need             want\n");
	seq_printf(s, "-----------------------------------------------------\n");

	spin_lock(&mdsc->caps_list_lock);
	list_for_each_entry(cw, &mdsc->cap_wait_list, list) {
		seq_printf(s, "%-13d0x%-17lx%-17s%-17s\n", cw->tgid, cw->ino,
				ceph_cap_string(cw->need),
				ceph_cap_string(cw->want));
	}
	spin_unlock(&mdsc->caps_list_lock);

	return 0;
}

static int mds_sessions_show(struct seq_file *s, void *ptr)
{
	struct ceph_fs_client *fsc = s->private;
	struct ceph_mds_client *mdsc = fsc->mdsc;
	struct ceph_auth_client *ac = fsc->client->monc.auth;
	struct ceph_options *opt = fsc->client->options;
	int mds;

	mutex_lock(&mdsc->mutex);

	/* The 'num' portion of an 'entity name' */
	seq_printf(s, "global_id %llu\n", ac->global_id);

	/* The -o name mount argument */
	seq_printf(s, "name \"%s\"\n", opt->name ? opt->name : "");

	/* The list of MDS session rank+state */
	for (mds = 0; mds < mdsc->max_sessions; mds++) {
		struct ceph_mds_session *session =
			__ceph_lookup_mds_session(mdsc, mds);
		if (!session) {
			continue;
		}
		mutex_unlock(&mdsc->mutex);
		seq_printf(s, "mds.%d %s\n",
				session->s_mds,
				ceph_session_state_name(session->s_state));

		ceph_put_mds_session(session);
		mutex_lock(&mdsc->mutex);
	}
	mutex_unlock(&mdsc->mutex);

	return 0;
}

DEFINE_SHOW_ATTRIBUTE(mdsmap);
DEFINE_SHOW_ATTRIBUTE(mdsc);
DEFINE_SHOW_ATTRIBUTE(caps);
DEFINE_SHOW_ATTRIBUTE(mds_sessions);
DEFINE_SHOW_ATTRIBUTE(metric);


/*
 * 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_mds_sessions);
	debugfs_remove(fsc->debugfs_caps);
	debugfs_remove(fsc->debugfs_metric);
	debugfs_remove(fsc->debugfs_mdsc);
}

void ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
{
	char name[100];

	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);

	snprintf(name, sizeof(name), "../../bdi/%s",
		 bdi_dev_name(fsc->sb->s_bdi));
	fsc->debugfs_bdi =
		debugfs_create_symlink("bdi",
				       fsc->client->debugfs_dir,
				       name);

	fsc->debugfs_mdsmap = debugfs_create_file("mdsmap",
					0400,
					fsc->client->debugfs_dir,
					fsc,
					&mdsmap_fops);

	fsc->debugfs_mds_sessions = debugfs_create_file("mds_sessions",
					0400,
					fsc->client->debugfs_dir,
					fsc,
					&mds_sessions_fops);

	fsc->debugfs_mdsc = debugfs_create_file("mdsc",
						0400,
						fsc->client->debugfs_dir,
						fsc,
						&mdsc_fops);

	fsc->debugfs_metric = debugfs_create_file("metrics",
						  0400,
						  fsc->client->debugfs_dir,
						  fsc,
						  &metric_fops);

	fsc->debugfs_caps = debugfs_create_file("caps",
						0400,
						fsc->client->debugfs_dir,
						fsc,
						&caps_fops);
}


#else  /* CONFIG_DEBUG_FS */

void ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
{
}

void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
{
}

#endif  /* CONFIG_DEBUG_FS */
Commit	Line	Data
b2441318	1	// SPDX-License-Identifier: GPL-2.0
3d14c5d2	2	#include <linux/ceph/ceph_debug.h>
76aa844d	3
06edf046	4	#include <linux/device.h>
5a0e3ad6	5	#include <linux/slab.h>
76aa844d SW	6	#include <linux/module.h>
	7	#include <linux/ctype.h>
	8	#include <linux/debugfs.h>
	9	#include <linux/seq_file.h>
97e27aaa XL	10	#include <linux/math64.h>
97e27aaa XL	11	#include <linux/ktime.h>
76aa844d	12
3d14c5d2 YS	13	#include <linux/ceph/libceph.h>
	14	#include <linux/ceph/mon_client.h>
	15	#include <linux/ceph/auth.h>
	16	#include <linux/ceph/debugfs.h>
76aa844d	17
6f453ed6 RD	18	#include "super.h"
6f453ed6 RD	19
039934b8 SW	20	#ifdef CONFIG_DEBUG_FS
039934b8 SW	21
3d14c5d2	22	#include "mds_client.h"
97e27aaa	23	#include "metric.h"
76aa844d SW	24
	25	static int mdsmap_show(struct seq_file s, void p)
	26	{
	27	int i;
3d14c5d2	28	struct ceph_fs_client *fsc = s->private;
76201b63	29	struct ceph_mdsmap *mdsmap;
76aa844d	30
d37b1d99	31	if (!fsc->mdsc \|\| !fsc->mdsc->mdsmap)
76aa844d	32	return 0;
76201b63 YZ	33	mdsmap = fsc->mdsc->mdsmap;
	34	seq_printf(s, "epoch %d\n", mdsmap->m_epoch);
	35	seq_printf(s, "root %d\n", mdsmap->m_root);
	36	seq_printf(s, "max_mds %d\n", mdsmap->m_max_mds);
	37	seq_printf(s, "session_timeout %d\n", mdsmap->m_session_timeout);
	38	seq_printf(s, "session_autoclose %d\n", mdsmap->m_session_autoclose);
b38c9eb4	39	for (i = 0; i < mdsmap->possible_max_rank; i++) {
76201b63 YZ	40	struct ceph_entity_addr *addr = &mdsmap->m_info[i].addr;
76201b63 YZ	41	int state = mdsmap->m_info[i].state;
3d14c5d2	42	seq_printf(s, "\tmds%d\t%s\t(%s)\n", i,
b726ec97	43	ceph_pr_addr(addr),
76aa844d SW	44	ceph_mds_state_name(state));
	45	}
	46	return 0;
	47	}
	48
3d14c5d2 YS	49	/*
	50	* mdsc debugfs
	51	*/
76aa844d SW	52	static int mdsc_show(struct seq_file s, void p)
76aa844d SW	53	{
3d14c5d2 YS	54	struct ceph_fs_client *fsc = s->private;
3d14c5d2 YS	55	struct ceph_mds_client *mdsc = fsc->mdsc;
44ca18f2 SW	56	struct ceph_mds_request *req;
44ca18f2 SW	57	struct rb_node *rp;
13c41737	58	int pathlen = 0;
76aa844d SW	59	u64 pathbase;
	60	char *path;
	61
	62	mutex_lock(&mdsc->mutex);
44ca18f2 SW	63	for (rp = rb_first(&mdsc->request_tree); rp; rp = rb_next(rp)) {
44ca18f2 SW	64	req = rb_entry(rp, struct ceph_mds_request, r_node);
76aa844d	65
4af25fdd SW	66	if (req->r_request && req->r_session)
	67	seq_printf(s, "%lld\tmds%d\t", req->r_tid,
	68	req->r_session->s_mds);
	69	else if (!req->r_request)
76aa844d	70	seq_printf(s, "%lld\t(no request)\t", req->r_tid);
4af25fdd SW	71	else
4af25fdd SW	72	seq_printf(s, "%lld\t(no session)\t", req->r_tid);
76aa844d SW	73
	74	seq_printf(s, "%s", ceph_mds_op_name(req->r_op));
	75
bc2de10d	76	if (test_bit(CEPH_MDS_R_GOT_UNSAFE, &req->r_req_flags))
3364d113	77	seq_puts(s, "\t(unsafe)");
76aa844d	78	else
3364d113	79	seq_puts(s, "\t");
76aa844d SW	80
	81	if (req->r_inode) {
	82	seq_printf(s, " #%llx", ceph_ino(req->r_inode));
	83	} else if (req->r_dentry) {
	84	path = ceph_mdsc_build_path(req->r_dentry, &pathlen,
	85	&pathbase, 0);
f44c3890 DC	86	if (IS_ERR(path))
f44c3890 DC	87	path = NULL;
76aa844d	88	spin_lock(&req->r_dentry->d_lock);
a455589f	89	seq_printf(s, " #%llx/%pd (%s)",
2b0143b5	90	ceph_ino(d_inode(req->r_dentry->d_parent)),
a455589f	91	req->r_dentry,
76aa844d SW	92	path ? path : "");
76aa844d SW	93	spin_unlock(&req->r_dentry->d_lock);
f77f21bb	94	ceph_mdsc_free_path(path, pathlen);
76aa844d SW	95	} else if (req->r_path1) {
	96	seq_printf(s, " #%llx/%s", req->r_ino1.ino,
	97	req->r_path1);
c137a32a YZ	98	} else {
c137a32a YZ	99	seq_printf(s, " #%llx", req->r_ino1.ino);
76aa844d SW	100	}
	101
	102	if (req->r_old_dentry) {
	103	path = ceph_mdsc_build_path(req->r_old_dentry, &pathlen,
	104	&pathbase, 0);
f44c3890 DC	105	if (IS_ERR(path))
f44c3890 DC	106	path = NULL;
76aa844d	107	spin_lock(&req->r_old_dentry->d_lock);
a455589f	108	seq_printf(s, " #%llx/%pd (%s)",
844d87c3 SW	109	req->r_old_dentry_dir ?
844d87c3 SW	110	ceph_ino(req->r_old_dentry_dir) : 0,
a455589f	111	req->r_old_dentry,
76aa844d SW	112	path ? path : "");
76aa844d SW	113	spin_unlock(&req->r_old_dentry->d_lock);
f77f21bb	114	ceph_mdsc_free_path(path, pathlen);
aeda081c	115	} else if (req->r_path2 && req->r_op != CEPH_MDS_OP_SYMLINK) {
76aa844d SW	116	if (req->r_ino2.ino)
	117	seq_printf(s, " #%llx/%s", req->r_ino2.ino,
	118	req->r_path2);
	119	else
	120	seq_printf(s, " %s", req->r_path2);
	121	}
	122
3364d113	123	seq_puts(s, "\n");
76aa844d SW	124	}
	125	mutex_unlock(&mdsc->mutex);
	126
	127	return 0;
	128	}
	129
97e27aaa XL	130	#define CEPH_METRIC_SHOW(name, total, avg, min, max, sq) { \
	131	s64 _total, _avg, _min, _max, _sq, _st; \
	132	_avg = ktime_to_us(avg); \
	133	_min = ktime_to_us(min == KTIME_MAX ? 0 : min); \
	134	_max = ktime_to_us(max); \
	135	_total = total - 1; \
	136	_sq = _total > 0 ? DIV64_U64_ROUND_CLOSEST(sq, _total) : 0; \
	137	_st = int_sqrt64(_sq); \
	138	_st = ktime_to_us(_st); \
	139	seq_printf(s, "%-14s%-12lld%-16lld%-16lld%-16lld%lld\n", \
	140	name, total, _avg, _min, _max, _st); \
	141	}
	142
f9009efa XL	143	static int metric_show(struct seq_file s, void p)
	144	{
	145	struct ceph_fs_client *fsc = s->private;
	146	struct ceph_mds_client *mdsc = fsc->mdsc;
	147	struct ceph_client_metric *m = &mdsc->metric;
4f1d756d	148	int nr_caps = 0;
97e27aaa XL	149	s64 total, sum, avg, min, max, sq;
	150
	151	seq_printf(s, "item total avg_lat(us) min_lat(us) max_lat(us) stdev(us)\n");
	152	seq_printf(s, "-----------------------------------------------------------------------------------\n");
	153
	154	spin_lock(&m->read_latency_lock);
	155	total = m->total_reads;
	156	sum = m->read_latency_sum;
	157	avg = total > 0 ? DIV64_U64_ROUND_CLOSEST(sum, total) : 0;
	158	min = m->read_latency_min;
	159	max = m->read_latency_max;
	160	sq = m->read_latency_sq_sum;
	161	spin_unlock(&m->read_latency_lock);
	162	CEPH_METRIC_SHOW("read", total, avg, min, max, sq);
	163
	164	spin_lock(&m->write_latency_lock);
	165	total = m->total_writes;
	166	sum = m->write_latency_sum;
	167	avg = total > 0 ? DIV64_U64_ROUND_CLOSEST(sum, total) : 0;
	168	min = m->write_latency_min;
	169	max = m->write_latency_max;
	170	sq = m->write_latency_sq_sum;
	171	spin_unlock(&m->write_latency_lock);
	172	CEPH_METRIC_SHOW("write", total, avg, min, max, sq);
	173
70c94820 XL	174	spin_lock(&m->metadata_latency_lock);
	175	total = m->total_metadatas;
	176	sum = m->metadata_latency_sum;
	177	avg = total > 0 ? DIV64_U64_ROUND_CLOSEST(sum, total) : 0;
	178	min = m->metadata_latency_min;
	179	max = m->metadata_latency_max;
	180	sq = m->metadata_latency_sq_sum;
	181	spin_unlock(&m->metadata_latency_lock);
	182	CEPH_METRIC_SHOW("metadata", total, avg, min, max, sq);
	183
97e27aaa	184	seq_printf(s, "\n");
f9009efa XL	185	seq_printf(s, "item total miss hit\n");
	186	seq_printf(s, "-------------------------------------------------\n");
	187
	188	seq_printf(s, "%-14s%-16lld%-16lld%lld\n", "d_lease",
	189	atomic64_read(&m->total_dentries),
	190	percpu_counter_sum(&m->d_lease_mis),
	191	percpu_counter_sum(&m->d_lease_hit));
	192
4f1d756d	193	nr_caps = atomic64_read(&m->total_caps);
1af16d54 XL	194	seq_printf(s, "%-14s%-16d%-16lld%lld\n", "caps", nr_caps,
	195	percpu_counter_sum(&m->i_caps_mis),
	196	percpu_counter_sum(&m->i_caps_hit));
	197
f9009efa XL	198	return 0;
	199	}
	200
ff4a80bf JL	201	static int caps_show_cb(struct inode inode, struct ceph_cap cap, void *p)
	202	{
	203	struct seq_file *s = p;
	204
	205	seq_printf(s, "0x%-17lx%-17s%-17s\n", inode->i_ino,
	206	ceph_cap_string(cap->issued),
	207	ceph_cap_string(cap->implemented));
	208	return 0;
	209	}
	210
76aa844d SW	211	static int caps_show(struct seq_file s, void p)
76aa844d SW	212	{
3d14c5d2	213	struct ceph_fs_client *fsc = s->private;
ff4a80bf JL	214	struct ceph_mds_client *mdsc = fsc->mdsc;
ff4a80bf JL	215	int total, avail, used, reserved, min, i;
3a3430af	216	struct cap_wait *cw;
76aa844d	217
3d14c5d2	218	ceph_reservation_status(fsc, &total, &avail, &used, &reserved, &min);
76aa844d	219	seq_printf(s, "total\t\t%d\n"
85ccce43 SW	220	"avail\t\t%d\n"
	221	"used\t\t%d\n"
	222	"reserved\t%d\n"
ff4a80bf	223	"min\t\t%d\n\n",
85ccce43	224	total, avail, used, reserved, min);
ff4a80bf JL	225	seq_printf(s, "ino issued implemented\n");
	226	seq_printf(s, "-----------------------------------------------\n");
	227
	228	mutex_lock(&mdsc->mutex);
	229	for (i = 0; i < mdsc->max_sessions; i++) {
	230	struct ceph_mds_session *session;
	231
	232	session = __ceph_lookup_mds_session(mdsc, i);
	233	if (!session)
	234	continue;
	235	mutex_unlock(&mdsc->mutex);
	236	mutex_lock(&session->s_mutex);
	237	ceph_iterate_session_caps(session, caps_show_cb, s);
	238	mutex_unlock(&session->s_mutex);
	239	ceph_put_mds_session(session);
	240	mutex_lock(&mdsc->mutex);
	241	}
	242	mutex_unlock(&mdsc->mutex);
	243
3a3430af JL	244	seq_printf(s, "\n\nWaiters:\n--------\n");
	245	seq_printf(s, "tgid ino need want\n");
	246	seq_printf(s, "-----------------------------------------------------\n");
	247
	248	spin_lock(&mdsc->caps_list_lock);
	249	list_for_each_entry(cw, &mdsc->cap_wait_list, list) {
	250	seq_printf(s, "%-13d0x%-17lx%-17s%-17s\n", cw->tgid, cw->ino,
	251	ceph_cap_string(cw->need),
	252	ceph_cap_string(cw->want));
	253	}
	254	spin_unlock(&mdsc->caps_list_lock);
	255
76aa844d SW	256	return 0;
	257	}
	258
14ed9703 JS	259	static int mds_sessions_show(struct seq_file s, void ptr)
	260	{
	261	struct ceph_fs_client *fsc = s->private;
	262	struct ceph_mds_client *mdsc = fsc->mdsc;
	263	struct ceph_auth_client *ac = fsc->client->monc.auth;
	264	struct ceph_options *opt = fsc->client->options;
2c81ef28	265	int mds;
14ed9703 JS	266
	267	mutex_lock(&mdsc->mutex);
	268
	269	/* The 'num' portion of an 'entity name' */
	270	seq_printf(s, "global_id %llu\n", ac->global_id);
	271
	272	/* The -o name mount argument */
	273	seq_printf(s, "name \"%s\"\n", opt->name ? opt->name : "");
	274
	275	/* The list of MDS session rank+state */
	276	for (mds = 0; mds < mdsc->max_sessions; mds++) {
	277	struct ceph_mds_session *session =
	278	__ceph_lookup_mds_session(mdsc, mds);
	279	if (!session) {
	280	continue;
	281	}
	282	mutex_unlock(&mdsc->mutex);
	283	seq_printf(s, "mds.%d %s\n",
	284	session->s_mds,
	285	ceph_session_state_name(session->s_state));
	286
	287	ceph_put_mds_session(session);
	288	mutex_lock(&mdsc->mutex);
	289	}
	290	mutex_unlock(&mdsc->mutex);
	291
	292	return 0;
	293	}
	294
072eaf3c ID	295	DEFINE_SHOW_ATTRIBUTE(mdsmap);
	296	DEFINE_SHOW_ATTRIBUTE(mdsc);
	297	DEFINE_SHOW_ATTRIBUTE(caps);
	298	DEFINE_SHOW_ATTRIBUTE(mds_sessions);
f9009efa	299	DEFINE_SHOW_ATTRIBUTE(metric);
3d14c5d2	300
76aa844d	301
3d14c5d2 YS	302	/*
	303	* debugfs
	304	*/
2baba250 YS	305	static int congestion_kb_set(void *data, u64 val)
2baba250 YS	306	{
3d14c5d2	307	struct ceph_fs_client fsc = (struct ceph_fs_client )data;
2baba250	308
3d14c5d2	309	fsc->mount_options->congestion_kb = (int)val;
2baba250 YS	310	return 0;
	311	}
	312
	313	static int congestion_kb_get(void data, u64 val)
	314	{
3d14c5d2	315	struct ceph_fs_client fsc = (struct ceph_fs_client )data;
2baba250	316
3d14c5d2	317	*val = (u64)fsc->mount_options->congestion_kb;
2baba250 YS	318	return 0;
	319	}
	320
2baba250 YS	321	DEFINE_SIMPLE_ATTRIBUTE(congestion_kb_fops, congestion_kb_get,
	322	congestion_kb_set, "%llu\n");
	323
76aa844d	324
3d14c5d2	325	void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
76aa844d	326	{
3d14c5d2 YS	327	dout("ceph_fs_debugfs_cleanup\n");
	328	debugfs_remove(fsc->debugfs_bdi);
	329	debugfs_remove(fsc->debugfs_congestion_kb);
	330	debugfs_remove(fsc->debugfs_mdsmap);
14ed9703	331	debugfs_remove(fsc->debugfs_mds_sessions);
3d14c5d2	332	debugfs_remove(fsc->debugfs_caps);
f9009efa	333	debugfs_remove(fsc->debugfs_metric);
3d14c5d2	334	debugfs_remove(fsc->debugfs_mdsc);
76aa844d SW	335	}
76aa844d SW	336
1a829ff2	337	void ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
76aa844d	338	{
3d14c5d2	339	char name[100];
76aa844d	340
3d14c5d2 YS	341	dout("ceph_fs_debugfs_init\n");
	342	fsc->debugfs_congestion_kb =
	343	debugfs_create_file("writeback_congestion_kb",
	344	0600,
	345	fsc->client->debugfs_dir,
	346	fsc,
	347	&congestion_kb_fops);
76aa844d	348
3d14c5d2	349	snprintf(name, sizeof(name), "../../bdi/%s",
d51cfc53	350	bdi_dev_name(fsc->sb->s_bdi));
3d14c5d2 YS	351	fsc->debugfs_bdi =
	352	debugfs_create_symlink("bdi",
	353	fsc->client->debugfs_dir,
	354	name);
76aa844d	355
3d14c5d2	356	fsc->debugfs_mdsmap = debugfs_create_file("mdsmap",
11e1478d	357	0400,
3d14c5d2 YS	358	fsc->client->debugfs_dir,
3d14c5d2 YS	359	fsc,
072eaf3c	360	&mdsmap_fops);
76aa844d	361
14ed9703	362	fsc->debugfs_mds_sessions = debugfs_create_file("mds_sessions",
11e1478d	363	0400,
14ed9703 JS	364	fsc->client->debugfs_dir,
14ed9703 JS	365	fsc,
072eaf3c	366	&mds_sessions_fops);
14ed9703	367
3d14c5d2	368	fsc->debugfs_mdsc = debugfs_create_file("mdsc",
11e1478d	369	0400,
3d14c5d2 YS	370	fsc->client->debugfs_dir,
3d14c5d2 YS	371	fsc,
072eaf3c	372	&mdsc_fops);
76aa844d	373
f9009efa XL	374	fsc->debugfs_metric = debugfs_create_file("metrics",
	375	0400,
	376	fsc->client->debugfs_dir,
	377	fsc,
	378	&metric_fops);
	379
3d14c5d2	380	fsc->debugfs_caps = debugfs_create_file("caps",
f9009efa XL	381	0400,
	382	fsc->client->debugfs_dir,
	383	fsc,
	384	&caps_fops);
76aa844d SW	385	}
76aa844d SW	386
76aa844d	387
213c99ee	388	#else /* CONFIG_DEBUG_FS */
039934b8	389
1a829ff2	390	void ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
039934b8	391	{
039934b8 SW	392	}
039934b8 SW	393
3d14c5d2	394	void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
039934b8 SW	395	{
	396	}
	397
213c99ee	398	#endif /* CONFIG_DEBUG_FS */