[linux-block.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_LAT_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);			\
}

#define CEPH_SZ_METRIC_SHOW(name, total, avg, min, max, sum) {		\
	u64 _min = min == U64_MAX ? 0 : min;				\
	seq_printf(s, "%-14s%-12lld%-16llu%-16llu%-16llu%llu\n",	\
		   name, total, avg, _min, max, sum);			\
}

static int metrics_file_show(struct seq_file *s, void *p)
{
	struct ceph_fs_client *fsc = s->private;
	struct ceph_client_metric *m = &fsc->mdsc->metric;

	seq_printf(s, "item                               total\n");
	seq_printf(s, "------------------------------------------\n");
	seq_printf(s, "%-35s%lld\n", "total inodes",
		   percpu_counter_sum(&m->total_inodes));
	seq_printf(s, "%-35s%lld\n", "opened files",
		   atomic64_read(&m->opened_files));
	seq_printf(s, "%-35s%lld\n", "pinned i_caps",
		   atomic64_read(&m->total_caps));
	seq_printf(s, "%-35s%lld\n", "opened inodes",
		   percpu_counter_sum(&m->opened_inodes));
	return 0;
}

static const char * const metric_str[] = {
	"read",
	"write",
	"metadata",
	"copyfrom"
};
static int metrics_latency_show(struct seq_file *s, void *p)
{
	struct ceph_fs_client *fsc = s->private;
	struct ceph_client_metric *cm = &fsc->mdsc->metric;
	struct ceph_metric *m;
	s64 total, avg, min, max, sq;
	int i;

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

	for (i = 0; i < METRIC_MAX; i++) {
		m = &cm->metric[i];
		spin_lock(&m->lock);
		total = m->total;
		avg = m->latency_avg;
		min = m->latency_min;
		max = m->latency_max;
		sq = m->latency_sq_sum;
		spin_unlock(&m->lock);
		CEPH_LAT_METRIC_SHOW(metric_str[i], total, avg, min, max, sq);
	}

	return 0;
}

static int metrics_size_show(struct seq_file *s, void *p)
{
	struct ceph_fs_client *fsc = s->private;
	struct ceph_client_metric *cm = &fsc->mdsc->metric;
	struct ceph_metric *m;
	s64 total;
	u64 sum, avg, min, max;
	int i;

	seq_printf(s, "item          total       avg_sz(bytes)   min_sz(bytes)   max_sz(bytes)  total_sz(bytes)\n");
	seq_printf(s, "----------------------------------------------------------------------------------------\n");

	for (i = 0; i < METRIC_MAX; i++) {
		/* skip 'metadata' as it doesn't use the size metric */
		if (i == METRIC_METADATA)
			continue;
		m = &cm->metric[i];
		spin_lock(&m->lock);
		total = m->total;
		sum = m->size_sum;
		avg = total > 0 ? DIV64_U64_ROUND_CLOSEST(sum, total) : 0;
		min = m->size_min;
		max = m->size_max;
		spin_unlock(&m->lock);
		CEPH_SZ_METRIC_SHOW(metric_str[i], total, avg, min, max, sum);
	}

	return 0;
}

static int metrics_caps_show(struct seq_file *s, void *p)
{
	struct ceph_fs_client *fsc = s->private;
	struct ceph_client_metric *m = &fsc->mdsc->metric;
	int nr_caps = 0;

	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%-17llx%-3d%-17s%-17s\n", ceph_ino(inode),
		   cap->session->s_mds,
		   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              mds  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%-17llx%-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;
}

static int status_show(struct seq_file *s, void *p)
{
	struct ceph_fs_client *fsc = s->private;
	struct ceph_entity_inst *inst = &fsc->client->msgr.inst;
	struct ceph_entity_addr *client_addr = ceph_client_addr(fsc->client);

	seq_printf(s, "instance: %s.%lld %s/%u\n", ENTITY_NAME(inst->name),
		   ceph_pr_addr(client_addr), le32_to_cpu(client_addr->nonce));
	seq_printf(s, "blocklisted: %s\n", fsc->blocklisted ? "true" : "false");

	return 0;
}

DEFINE_SHOW_ATTRIBUTE(mdsmap);
DEFINE_SHOW_ATTRIBUTE(mdsc);
DEFINE_SHOW_ATTRIBUTE(caps);
DEFINE_SHOW_ATTRIBUTE(mds_sessions);
DEFINE_SHOW_ATTRIBUTE(status);
DEFINE_SHOW_ATTRIBUTE(metrics_file);
DEFINE_SHOW_ATTRIBUTE(metrics_latency);
DEFINE_SHOW_ATTRIBUTE(metrics_size);
DEFINE_SHOW_ATTRIBUTE(metrics_caps);


/*
 * 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_status);
	debugfs_remove(fsc->debugfs_mdsc);
	debugfs_remove_recursive(fsc->debugfs_metrics_dir);
}

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

	fsc->debugfs_status = debugfs_create_file("status",
						  0400,
						  fsc->client->debugfs_dir,
						  fsc,
						  &status_fops);

	fsc->debugfs_metrics_dir = debugfs_create_dir("metrics",
						      fsc->client->debugfs_dir);

	debugfs_create_file("file", 0400, fsc->debugfs_metrics_dir, fsc,
			    &metrics_file_fops);
	debugfs_create_file("latency", 0400, fsc->debugfs_metrics_dir, fsc,
			    &metrics_latency_fops);
	debugfs_create_file("size", 0400, fsc->debugfs_metrics_dir, fsc,
			    &metrics_size_fops);
	debugfs_create_file("caps", 0400, fsc->debugfs_metrics_dir, fsc,
			    &metrics_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
903f4fec	130	#define CEPH_LAT_METRIC_SHOW(name, total, avg, min, max, sq) { \
97e27aaa XL	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
903f4fec XL	143	#define CEPH_SZ_METRIC_SHOW(name, total, avg, min, max, sum) { \
	144	u64 _min = min == U64_MAX ? 0 : min; \
	145	seq_printf(s, "%-14s%-12lld%-16llu%-16llu%-16llu%llu\n", \
	146	name, total, avg, _min, max, sum); \
	147	}
	148
cbed4ff7	149	static int metrics_file_show(struct seq_file s, void p)
f9009efa XL	150	{
f9009efa XL	151	struct ceph_fs_client *fsc = s->private;
cbed4ff7	152	struct ceph_client_metric *m = &fsc->mdsc->metric;
97e27aaa	153
1dd8d470 XL	154	seq_printf(s, "item total\n");
1dd8d470 XL	155	seq_printf(s, "------------------------------------------\n");
cbed4ff7 LH	156	seq_printf(s, "%-35s%lld\n", "total inodes",
	157	percpu_counter_sum(&m->total_inodes));
	158	seq_printf(s, "%-35s%lld\n", "opened files",
	159	atomic64_read(&m->opened_files));
	160	seq_printf(s, "%-35s%lld\n", "pinned i_caps",
	161	atomic64_read(&m->total_caps));
	162	seq_printf(s, "%-35s%lld\n", "opened inodes",
	163	percpu_counter_sum(&m->opened_inodes));
	164	return 0;
	165	}
	166
17e9fc9f LH	167	static const char * const metric_str[] = {
	168	"read",
	169	"write",
c02cb7bd LH	170	"metadata",
c02cb7bd LH	171	"copyfrom"
17e9fc9f	172	};
cbed4ff7 LH	173	static int metrics_latency_show(struct seq_file s, void p)
	174	{
	175	struct ceph_fs_client *fsc = s->private;
17e9fc9f LH	176	struct ceph_client_metric *cm = &fsc->mdsc->metric;
17e9fc9f LH	177	struct ceph_metric *m;
271251f8	178	s64 total, avg, min, max, sq;
17e9fc9f	179	int i;
cbed4ff7	180
97e27aaa XL	181	seq_printf(s, "item total avg_lat(us) min_lat(us) max_lat(us) stdev(us)\n");
	182	seq_printf(s, "-----------------------------------------------------------------------------------\n");
	183
17e9fc9f LH	184	for (i = 0; i < METRIC_MAX; i++) {
	185	m = &cm->metric[i];
	186	spin_lock(&m->lock);
	187	total = m->total;
271251f8	188	avg = m->latency_avg;
17e9fc9f LH	189	min = m->latency_min;
	190	max = m->latency_max;
	191	sq = m->latency_sq_sum;
	192	spin_unlock(&m->lock);
	193	CEPH_LAT_METRIC_SHOW(metric_str[i], total, avg, min, max, sq);
	194	}
903f4fec	195
cbed4ff7 LH	196	return 0;
	197	}
	198
	199	static int metrics_size_show(struct seq_file s, void p)
	200	{
	201	struct ceph_fs_client *fsc = s->private;
17e9fc9f LH	202	struct ceph_client_metric *cm = &fsc->mdsc->metric;
17e9fc9f LH	203	struct ceph_metric *m;
cbed4ff7	204	s64 total;
17e9fc9f LH	205	u64 sum, avg, min, max;
17e9fc9f LH	206	int i;
cbed4ff7	207
903f4fec XL	208	seq_printf(s, "item total avg_sz(bytes) min_sz(bytes) max_sz(bytes) total_sz(bytes)\n");
	209	seq_printf(s, "----------------------------------------------------------------------------------------\n");
	210
17e9fc9f LH	211	for (i = 0; i < METRIC_MAX; i++) {
	212	/* skip 'metadata' as it doesn't use the size metric */
	213	if (i == METRIC_METADATA)
	214	continue;
	215	m = &cm->metric[i];
	216	spin_lock(&m->lock);
	217	total = m->total;
	218	sum = m->size_sum;
	219	avg = total > 0 ? DIV64_U64_ROUND_CLOSEST(sum, total) : 0;
	220	min = m->size_min;
	221	max = m->size_max;
	222	spin_unlock(&m->lock);
	223	CEPH_SZ_METRIC_SHOW(metric_str[i], total, avg, min, max, sum);
	224	}
70c94820	225
cbed4ff7 LH	226	return 0;
	227	}
	228
	229	static int metrics_caps_show(struct seq_file s, void p)
	230	{
	231	struct ceph_fs_client *fsc = s->private;
	232	struct ceph_client_metric *m = &fsc->mdsc->metric;
	233	int nr_caps = 0;
	234
f9009efa XL	235	seq_printf(s, "item total miss hit\n");
	236	seq_printf(s, "-------------------------------------------------\n");
	237
	238	seq_printf(s, "%-14s%-16lld%-16lld%lld\n", "d_lease",
	239	atomic64_read(&m->total_dentries),
	240	percpu_counter_sum(&m->d_lease_mis),
	241	percpu_counter_sum(&m->d_lease_hit));
	242
4f1d756d	243	nr_caps = atomic64_read(&m->total_caps);
1af16d54 XL	244	seq_printf(s, "%-14s%-16d%-16lld%lld\n", "caps", nr_caps,
	245	percpu_counter_sum(&m->i_caps_mis),
	246	percpu_counter_sum(&m->i_caps_hit));
	247
f9009efa XL	248	return 0;
	249	}
	250
ff4a80bf JL	251	static int caps_show_cb(struct inode inode, struct ceph_cap cap, void *p)
	252	{
	253	struct seq_file *s = p;
	254
3a8ebe0b YC	255	seq_printf(s, "0x%-17llx%-3d%-17s%-17s\n", ceph_ino(inode),
3a8ebe0b YC	256	cap->session->s_mds,
ff4a80bf JL	257	ceph_cap_string(cap->issued),
	258	ceph_cap_string(cap->implemented));
	259	return 0;
	260	}
	261
76aa844d SW	262	static int caps_show(struct seq_file s, void p)
76aa844d SW	263	{
3d14c5d2	264	struct ceph_fs_client *fsc = s->private;
ff4a80bf JL	265	struct ceph_mds_client *mdsc = fsc->mdsc;
ff4a80bf JL	266	int total, avail, used, reserved, min, i;
3a3430af	267	struct cap_wait *cw;
76aa844d	268
3d14c5d2	269	ceph_reservation_status(fsc, &total, &avail, &used, &reserved, &min);
76aa844d	270	seq_printf(s, "total\t\t%d\n"
85ccce43 SW	271	"avail\t\t%d\n"
	272	"used\t\t%d\n"
	273	"reserved\t%d\n"
ff4a80bf	274	"min\t\t%d\n\n",
85ccce43	275	total, avail, used, reserved, min);
3a8ebe0b YC	276	seq_printf(s, "ino mds issued implemented\n");
3a8ebe0b YC	277	seq_printf(s, "--------------------------------------------------\n");
ff4a80bf JL	278
	279	mutex_lock(&mdsc->mutex);
	280	for (i = 0; i < mdsc->max_sessions; i++) {
	281	struct ceph_mds_session *session;
	282
	283	session = __ceph_lookup_mds_session(mdsc, i);
	284	if (!session)
	285	continue;
	286	mutex_unlock(&mdsc->mutex);
	287	mutex_lock(&session->s_mutex);
	288	ceph_iterate_session_caps(session, caps_show_cb, s);
	289	mutex_unlock(&session->s_mutex);
	290	ceph_put_mds_session(session);
	291	mutex_lock(&mdsc->mutex);
	292	}
	293	mutex_unlock(&mdsc->mutex);
	294
3a3430af JL	295	seq_printf(s, "\n\nWaiters:\n--------\n");
	296	seq_printf(s, "tgid ino need want\n");
	297	seq_printf(s, "-----------------------------------------------------\n");
	298
	299	spin_lock(&mdsc->caps_list_lock);
	300	list_for_each_entry(cw, &mdsc->cap_wait_list, list) {
ebce3eb2	301	seq_printf(s, "%-13d0x%-17llx%-17s%-17s\n", cw->tgid, cw->ino,
3a3430af JL	302	ceph_cap_string(cw->need),
	303	ceph_cap_string(cw->want));
	304	}
	305	spin_unlock(&mdsc->caps_list_lock);
	306
76aa844d SW	307	return 0;
	308	}
	309
14ed9703 JS	310	static int mds_sessions_show(struct seq_file s, void ptr)
	311	{
	312	struct ceph_fs_client *fsc = s->private;
	313	struct ceph_mds_client *mdsc = fsc->mdsc;
	314	struct ceph_auth_client *ac = fsc->client->monc.auth;
	315	struct ceph_options *opt = fsc->client->options;
2c81ef28	316	int mds;
14ed9703 JS	317
	318	mutex_lock(&mdsc->mutex);
	319
	320	/* The 'num' portion of an 'entity name' */
	321	seq_printf(s, "global_id %llu\n", ac->global_id);
	322
	323	/* The -o name mount argument */
	324	seq_printf(s, "name \"%s\"\n", opt->name ? opt->name : "");
	325
	326	/* The list of MDS session rank+state */
	327	for (mds = 0; mds < mdsc->max_sessions; mds++) {
	328	struct ceph_mds_session *session =
	329	__ceph_lookup_mds_session(mdsc, mds);
	330	if (!session) {
	331	continue;
	332	}
	333	mutex_unlock(&mdsc->mutex);
	334	seq_printf(s, "mds.%d %s\n",
	335	session->s_mds,
	336	ceph_session_state_name(session->s_state));
	337
	338	ceph_put_mds_session(session);
	339	mutex_lock(&mdsc->mutex);
	340	}
	341	mutex_unlock(&mdsc->mutex);
	342
	343	return 0;
	344	}
	345
247b1f19 XL	346	static int status_show(struct seq_file s, void p)
	347	{
	348	struct ceph_fs_client *fsc = s->private;
	349	struct ceph_entity_inst *inst = &fsc->client->msgr.inst;
	350	struct ceph_entity_addr *client_addr = ceph_client_addr(fsc->client);
	351
	352	seq_printf(s, "instance: %s.%lld %s/%u\n", ENTITY_NAME(inst->name),
	353	ceph_pr_addr(client_addr), le32_to_cpu(client_addr->nonce));
	354	seq_printf(s, "blocklisted: %s\n", fsc->blocklisted ? "true" : "false");
	355
	356	return 0;
	357	}
	358
072eaf3c ID	359	DEFINE_SHOW_ATTRIBUTE(mdsmap);
	360	DEFINE_SHOW_ATTRIBUTE(mdsc);
	361	DEFINE_SHOW_ATTRIBUTE(caps);
	362	DEFINE_SHOW_ATTRIBUTE(mds_sessions);
247b1f19	363	DEFINE_SHOW_ATTRIBUTE(status);
cbed4ff7 LH	364	DEFINE_SHOW_ATTRIBUTE(metrics_file);
	365	DEFINE_SHOW_ATTRIBUTE(metrics_latency);
	366	DEFINE_SHOW_ATTRIBUTE(metrics_size);
	367	DEFINE_SHOW_ATTRIBUTE(metrics_caps);
3d14c5d2	368
76aa844d	369
3d14c5d2 YS	370	/*
	371	* debugfs
	372	*/
2baba250 YS	373	static int congestion_kb_set(void *data, u64 val)
2baba250 YS	374	{
3d14c5d2	375	struct ceph_fs_client fsc = (struct ceph_fs_client )data;
2baba250	376
3d14c5d2	377	fsc->mount_options->congestion_kb = (int)val;
2baba250 YS	378	return 0;
	379	}
	380
	381	static int congestion_kb_get(void data, u64 val)
	382	{
3d14c5d2	383	struct ceph_fs_client fsc = (struct ceph_fs_client )data;
2baba250	384
3d14c5d2	385	*val = (u64)fsc->mount_options->congestion_kb;
2baba250 YS	386	return 0;
	387	}
	388
2baba250 YS	389	DEFINE_SIMPLE_ATTRIBUTE(congestion_kb_fops, congestion_kb_get,
	390	congestion_kb_set, "%llu\n");
	391
76aa844d	392
3d14c5d2	393	void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
76aa844d	394	{
3d14c5d2 YS	395	dout("ceph_fs_debugfs_cleanup\n");
	396	debugfs_remove(fsc->debugfs_bdi);
	397	debugfs_remove(fsc->debugfs_congestion_kb);
	398	debugfs_remove(fsc->debugfs_mdsmap);
14ed9703	399	debugfs_remove(fsc->debugfs_mds_sessions);
3d14c5d2	400	debugfs_remove(fsc->debugfs_caps);
cbed4ff7	401	debugfs_remove(fsc->debugfs_status);
3d14c5d2	402	debugfs_remove(fsc->debugfs_mdsc);
cbed4ff7	403	debugfs_remove_recursive(fsc->debugfs_metrics_dir);
76aa844d SW	404	}
76aa844d SW	405
1a829ff2	406	void ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
76aa844d	407	{
3d14c5d2	408	char name[100];
76aa844d	409
3d14c5d2 YS	410	dout("ceph_fs_debugfs_init\n");
	411	fsc->debugfs_congestion_kb =
	412	debugfs_create_file("writeback_congestion_kb",
	413	0600,
	414	fsc->client->debugfs_dir,
	415	fsc,
	416	&congestion_kb_fops);
76aa844d	417
3d14c5d2	418	snprintf(name, sizeof(name), "../../bdi/%s",
d51cfc53	419	bdi_dev_name(fsc->sb->s_bdi));
3d14c5d2 YS	420	fsc->debugfs_bdi =
	421	debugfs_create_symlink("bdi",
	422	fsc->client->debugfs_dir,
	423	name);
76aa844d	424
3d14c5d2	425	fsc->debugfs_mdsmap = debugfs_create_file("mdsmap",
11e1478d	426	0400,
3d14c5d2 YS	427	fsc->client->debugfs_dir,
3d14c5d2 YS	428	fsc,
072eaf3c	429	&mdsmap_fops);
76aa844d	430
14ed9703	431	fsc->debugfs_mds_sessions = debugfs_create_file("mds_sessions",
11e1478d	432	0400,
14ed9703 JS	433	fsc->client->debugfs_dir,
14ed9703 JS	434	fsc,
072eaf3c	435	&mds_sessions_fops);
14ed9703	436
3d14c5d2	437	fsc->debugfs_mdsc = debugfs_create_file("mdsc",
11e1478d	438	0400,
3d14c5d2 YS	439	fsc->client->debugfs_dir,
3d14c5d2 YS	440	fsc,
072eaf3c	441	&mdsc_fops);
76aa844d	442
3d14c5d2	443	fsc->debugfs_caps = debugfs_create_file("caps",
f9009efa XL	444	0400,
	445	fsc->client->debugfs_dir,
	446	fsc,
	447	&caps_fops);
247b1f19 XL	448
	449	fsc->debugfs_status = debugfs_create_file("status",
	450	0400,
	451	fsc->client->debugfs_dir,
	452	fsc,
	453	&status_fops);
cbed4ff7 LH	454
	455	fsc->debugfs_metrics_dir = debugfs_create_dir("metrics",
	456	fsc->client->debugfs_dir);
	457
	458	debugfs_create_file("file", 0400, fsc->debugfs_metrics_dir, fsc,
	459	&metrics_file_fops);
	460	debugfs_create_file("latency", 0400, fsc->debugfs_metrics_dir, fsc,
	461	&metrics_latency_fops);
	462	debugfs_create_file("size", 0400, fsc->debugfs_metrics_dir, fsc,
	463	&metrics_size_fops);
	464	debugfs_create_file("caps", 0400, fsc->debugfs_metrics_dir, fsc,
	465	&metrics_caps_fops);
76aa844d SW	466	}
76aa844d SW	467
76aa844d	468
213c99ee	469	#else /* CONFIG_DEBUG_FS */
039934b8	470
1a829ff2	471	void ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
039934b8	472	{
039934b8 SW	473	}
039934b8 SW	474
3d14c5d2	475	void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
039934b8 SW	476	{
	477	}
	478
213c99ee	479	#endif /* CONFIG_DEBUG_FS */