#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/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" static int mdsmap_show(struct seq_file *s, void *p){	int i;	struct ceph_fs_client *fsc = s->private; 	if (fsc->mdsc == NULL || fsc->mdsc->mdsmap == NULL)		return 0;	seq_printf(s, "epoch %d\n", fsc->mdsc->mdsmap->m_epoch);	seq_printf(s, "root %d\n", fsc->mdsc->mdsmap->m_root);	seq_printf(s, "session_timeout %d\n",		       fsc->mdsc->mdsmap->m_session_timeout);	seq_printf(s, "session_autoclose %d\n",		       fsc->mdsc->mdsmap->m_session_autoclose);	for (i = 0; i < fsc->mdsc->mdsmap->m_max_mds; i++) {		struct ceph_entity_addr *addr =			&fsc->mdsc->mdsmap->m_info[i].addr;		int state = fsc->mdsc->mdsmap->m_info[i].state; 		seq_printf(s, "\tmds%d\t%s\t(%s)\n", i,			       ceph_pr_addr(&addr->in_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;	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 (req->r_got_unsafe)			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);			kfree(path);		} 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);			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_puts(s, "\n");	}	mutex_unlock(&mdsc->mutex); 	return 0;} static int caps_show(struct seq_file *s, void *p){	struct ceph_fs_client *fsc = s->private;	int total, avail, used, reserved, min; 	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%d\n",		   total, avail, used, reserved, min);	return 0;} static int dentry_lru_show(struct seq_file *s, void *ptr){	struct ceph_fs_client *fsc = s->private;	struct ceph_mds_client *mdsc = fsc->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%pd\n",			   di, dentry, dentry);	}	spin_unlock(&mdsc->dentry_lru_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 = -1; 	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;} CEPH_DEFINE_SHOW_FUNC(mdsmap_show)CEPH_DEFINE_SHOW_FUNC(mdsc_show)CEPH_DEFINE_SHOW_FUNC(caps_show)CEPH_DEFINE_SHOW_FUNC(dentry_lru_show)CEPH_DEFINE_SHOW_FUNC(mds_sessions_show)  /* * 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_mdsc);	debugfs_remove(fsc->debugfs_dentry_lru);} int ceph_fs_debugfs_init(struct ceph_fs_client *fsc){	char name[100];	int err = -ENOMEM; 	dout("ceph_fs_debugfs_init\n");	BUG_ON(!fsc->client->debugfs_dir);	fsc->debugfs_congestion_kb =		debugfs_create_file("writeback_congestion_kb",				    0600,				    fsc->client->debugfs_dir,				    fsc,				    &congestion_kb_fops);	if (!fsc->debugfs_congestion_kb)		goto out; 	snprintf(name, sizeof(name), "../../bdi/%s",		 dev_name(fsc->backing_dev_info.dev));	fsc->debugfs_bdi =		debugfs_create_symlink("bdi",				       fsc->client->debugfs_dir,				       name);	if (!fsc->debugfs_bdi)		goto out; 	fsc->debugfs_mdsmap = debugfs_create_file("mdsmap",					0600,					fsc->client->debugfs_dir,					fsc,					&mdsmap_show_fops);	if (!fsc->debugfs_mdsmap)		goto out; 	fsc->debugfs_mds_sessions = debugfs_create_file("mds_sessions",					0600,					fsc->client->debugfs_dir,					fsc,					&mds_sessions_show_fops);	if (!fsc->debugfs_mds_sessions)		goto out; 	fsc->debugfs_mdsc = debugfs_create_file("mdsc",						0600,						fsc->client->debugfs_dir,						fsc,						&mdsc_show_fops);	if (!fsc->debugfs_mdsc)		goto out; 	fsc->debugfs_caps = debugfs_create_file("caps",						   0400,						   fsc->client->debugfs_dir,						   fsc,						   &caps_show_fops);	if (!fsc->debugfs_caps)		goto out; 	fsc->debugfs_dentry_lru = debugfs_create_file("dentry_lru",					0600,					fsc->client->debugfs_dir,					fsc,					&dentry_lru_show_fops);	if (!fsc->debugfs_dentry_lru)		goto out; 	return 0; out:	ceph_fs_debugfs_cleanup(fsc);	return err;}  #else  /* CONFIG_DEBUG_FS */ int ceph_fs_debugfs_init(struct ceph_fs_client *fsc){	return 0;} void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc){} #endif  /* CONFIG_DEBUG_FS */