Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#include <linux/ceph/ceph_debug.h>
2
3#include <linux/device.h>
4#include <linux/slab.h>
5#include <linux/module.h>
6#include <linux/ctype.h>
7#include <linux/debugfs.h>
8#include <linux/seq_file.h>
9
10#include <linux/ceph/libceph.h>
11#include <linux/ceph/mon_client.h>
12#include <linux/ceph/auth.h>
13#include <linux/ceph/debugfs.h>
14
15#include "super.h"
16
17#ifdef CONFIG_DEBUG_FS
18
19#include "mds_client.h"
20
21static int mdsmap_show(struct seq_file *s, void *p)
22{
23 int i;
24 struct ceph_fs_client *fsc = s->private;
25
26 if (fsc->mdsc == NULL || fsc->mdsc->mdsmap == NULL)
27 return 0;
28 seq_printf(s, "epoch %d\n", fsc->mdsc->mdsmap->m_epoch);
29 seq_printf(s, "root %d\n", fsc->mdsc->mdsmap->m_root);
30 seq_printf(s, "session_timeout %d\n",
31 fsc->mdsc->mdsmap->m_session_timeout);
32 seq_printf(s, "session_autoclose %d\n",
33 fsc->mdsc->mdsmap->m_session_autoclose);
34 for (i = 0; i < fsc->mdsc->mdsmap->m_max_mds; i++) {
35 struct ceph_entity_addr *addr =
36 &fsc->mdsc->mdsmap->m_info[i].addr;
37 int state = fsc->mdsc->mdsmap->m_info[i].state;
38
39 seq_printf(s, "\tmds%d\t%s\t(%s)\n", i,
40 ceph_pr_addr(&addr->in_addr),
41 ceph_mds_state_name(state));
42 }
43 return 0;
44}
45
46/*
47 * mdsc debugfs
48 */
49static int mdsc_show(struct seq_file *s, void *p)
50{
51 struct ceph_fs_client *fsc = s->private;
52 struct ceph_mds_client *mdsc = fsc->mdsc;
53 struct ceph_mds_request *req;
54 struct rb_node *rp;
55 int pathlen;
56 u64 pathbase;
57 char *path;
58
59 mutex_lock(&mdsc->mutex);
60 for (rp = rb_first(&mdsc->request_tree); rp; rp = rb_next(rp)) {
61 req = rb_entry(rp, struct ceph_mds_request, r_node);
62
63 if (req->r_request && req->r_session)
64 seq_printf(s, "%lld\tmds%d\t", req->r_tid,
65 req->r_session->s_mds);
66 else if (!req->r_request)
67 seq_printf(s, "%lld\t(no request)\t", req->r_tid);
68 else
69 seq_printf(s, "%lld\t(no session)\t", req->r_tid);
70
71 seq_printf(s, "%s", ceph_mds_op_name(req->r_op));
72
73 if (req->r_got_unsafe)
74 seq_puts(s, "\t(unsafe)");
75 else
76 seq_puts(s, "\t");
77
78 if (req->r_inode) {
79 seq_printf(s, " #%llx", ceph_ino(req->r_inode));
80 } else if (req->r_dentry) {
81 path = ceph_mdsc_build_path(req->r_dentry, &pathlen,
82 &pathbase, 0);
83 if (IS_ERR(path))
84 path = NULL;
85 spin_lock(&req->r_dentry->d_lock);
86 seq_printf(s, " #%llx/%.*s (%s)",
87 ceph_ino(req->r_dentry->d_parent->d_inode),
88 req->r_dentry->d_name.len,
89 req->r_dentry->d_name.name,
90 path ? path : "");
91 spin_unlock(&req->r_dentry->d_lock);
92 kfree(path);
93 } else if (req->r_path1) {
94 seq_printf(s, " #%llx/%s", req->r_ino1.ino,
95 req->r_path1);
96 } else {
97 seq_printf(s, " #%llx", req->r_ino1.ino);
98 }
99
100 if (req->r_old_dentry) {
101 path = ceph_mdsc_build_path(req->r_old_dentry, &pathlen,
102 &pathbase, 0);
103 if (IS_ERR(path))
104 path = NULL;
105 spin_lock(&req->r_old_dentry->d_lock);
106 seq_printf(s, " #%llx/%.*s (%s)",
107 req->r_old_dentry_dir ?
108 ceph_ino(req->r_old_dentry_dir) : 0,
109 req->r_old_dentry->d_name.len,
110 req->r_old_dentry->d_name.name,
111 path ? path : "");
112 spin_unlock(&req->r_old_dentry->d_lock);
113 kfree(path);
114 } else if (req->r_path2) {
115 if (req->r_ino2.ino)
116 seq_printf(s, " #%llx/%s", req->r_ino2.ino,
117 req->r_path2);
118 else
119 seq_printf(s, " %s", req->r_path2);
120 }
121
122 seq_puts(s, "\n");
123 }
124 mutex_unlock(&mdsc->mutex);
125
126 return 0;
127}
128
129static int caps_show(struct seq_file *s, void *p)
130{
131 struct ceph_fs_client *fsc = s->private;
132 int total, avail, used, reserved, min;
133
134 ceph_reservation_status(fsc, &total, &avail, &used, &reserved, &min);
135 seq_printf(s, "total\t\t%d\n"
136 "avail\t\t%d\n"
137 "used\t\t%d\n"
138 "reserved\t%d\n"
139 "min\t%d\n",
140 total, avail, used, reserved, min);
141 return 0;
142}
143
144static int dentry_lru_show(struct seq_file *s, void *ptr)
145{
146 struct ceph_fs_client *fsc = s->private;
147 struct ceph_mds_client *mdsc = fsc->mdsc;
148 struct ceph_dentry_info *di;
149
150 spin_lock(&mdsc->dentry_lru_lock);
151 list_for_each_entry(di, &mdsc->dentry_lru, lru) {
152 struct dentry *dentry = di->dentry;
153 seq_printf(s, "%p %p\t%.*s\n",
154 di, dentry, dentry->d_name.len, dentry->d_name.name);
155 }
156 spin_unlock(&mdsc->dentry_lru_lock);
157
158 return 0;
159}
160
161static int mds_sessions_show(struct seq_file *s, void *ptr)
162{
163 struct ceph_fs_client *fsc = s->private;
164 struct ceph_mds_client *mdsc = fsc->mdsc;
165 struct ceph_auth_client *ac = fsc->client->monc.auth;
166 struct ceph_options *opt = fsc->client->options;
167 int mds = -1;
168
169 mutex_lock(&mdsc->mutex);
170
171 /* The 'num' portion of an 'entity name' */
172 seq_printf(s, "global_id %llu\n", ac->global_id);
173
174 /* The -o name mount argument */
175 seq_printf(s, "name \"%s\"\n", opt->name ? opt->name : "");
176
177 /* The list of MDS session rank+state */
178 for (mds = 0; mds < mdsc->max_sessions; mds++) {
179 struct ceph_mds_session *session =
180 __ceph_lookup_mds_session(mdsc, mds);
181 if (!session) {
182 continue;
183 }
184 mutex_unlock(&mdsc->mutex);
185 seq_printf(s, "mds.%d %s\n",
186 session->s_mds,
187 ceph_session_state_name(session->s_state));
188
189 ceph_put_mds_session(session);
190 mutex_lock(&mdsc->mutex);
191 }
192 mutex_unlock(&mdsc->mutex);
193
194 return 0;
195}
196
197CEPH_DEFINE_SHOW_FUNC(mdsmap_show)
198CEPH_DEFINE_SHOW_FUNC(mdsc_show)
199CEPH_DEFINE_SHOW_FUNC(caps_show)
200CEPH_DEFINE_SHOW_FUNC(dentry_lru_show)
201CEPH_DEFINE_SHOW_FUNC(mds_sessions_show)
202
203
204/*
205 * debugfs
206 */
207static int congestion_kb_set(void *data, u64 val)
208{
209 struct ceph_fs_client *fsc = (struct ceph_fs_client *)data;
210
211 fsc->mount_options->congestion_kb = (int)val;
212 return 0;
213}
214
215static int congestion_kb_get(void *data, u64 *val)
216{
217 struct ceph_fs_client *fsc = (struct ceph_fs_client *)data;
218
219 *val = (u64)fsc->mount_options->congestion_kb;
220 return 0;
221}
222
223DEFINE_SIMPLE_ATTRIBUTE(congestion_kb_fops, congestion_kb_get,
224 congestion_kb_set, "%llu\n");
225
226
227void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
228{
229 dout("ceph_fs_debugfs_cleanup\n");
230 debugfs_remove(fsc->debugfs_bdi);
231 debugfs_remove(fsc->debugfs_congestion_kb);
232 debugfs_remove(fsc->debugfs_mdsmap);
233 debugfs_remove(fsc->debugfs_mds_sessions);
234 debugfs_remove(fsc->debugfs_caps);
235 debugfs_remove(fsc->debugfs_mdsc);
236 debugfs_remove(fsc->debugfs_dentry_lru);
237}
238
239int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
240{
241 char name[100];
242 int err = -ENOMEM;
243
244 dout("ceph_fs_debugfs_init\n");
245 BUG_ON(!fsc->client->debugfs_dir);
246 fsc->debugfs_congestion_kb =
247 debugfs_create_file("writeback_congestion_kb",
248 0600,
249 fsc->client->debugfs_dir,
250 fsc,
251 &congestion_kb_fops);
252 if (!fsc->debugfs_congestion_kb)
253 goto out;
254
255 snprintf(name, sizeof(name), "../../bdi/%s",
256 dev_name(fsc->backing_dev_info.dev));
257 fsc->debugfs_bdi =
258 debugfs_create_symlink("bdi",
259 fsc->client->debugfs_dir,
260 name);
261 if (!fsc->debugfs_bdi)
262 goto out;
263
264 fsc->debugfs_mdsmap = debugfs_create_file("mdsmap",
265 0600,
266 fsc->client->debugfs_dir,
267 fsc,
268 &mdsmap_show_fops);
269 if (!fsc->debugfs_mdsmap)
270 goto out;
271
272 fsc->debugfs_mds_sessions = debugfs_create_file("mds_sessions",
273 0600,
274 fsc->client->debugfs_dir,
275 fsc,
276 &mds_sessions_show_fops);
277 if (!fsc->debugfs_mds_sessions)
278 goto out;
279
280 fsc->debugfs_mdsc = debugfs_create_file("mdsc",
281 0600,
282 fsc->client->debugfs_dir,
283 fsc,
284 &mdsc_show_fops);
285 if (!fsc->debugfs_mdsc)
286 goto out;
287
288 fsc->debugfs_caps = debugfs_create_file("caps",
289 0400,
290 fsc->client->debugfs_dir,
291 fsc,
292 &caps_show_fops);
293 if (!fsc->debugfs_caps)
294 goto out;
295
296 fsc->debugfs_dentry_lru = debugfs_create_file("dentry_lru",
297 0600,
298 fsc->client->debugfs_dir,
299 fsc,
300 &dentry_lru_show_fops);
301 if (!fsc->debugfs_dentry_lru)
302 goto out;
303
304 return 0;
305
306out:
307 ceph_fs_debugfs_cleanup(fsc);
308 return err;
309}
310
311
312#else /* CONFIG_DEBUG_FS */
313
314int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
315{
316 return 0;
317}
318
319void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
320{
321}
322
323#endif /* CONFIG_DEBUG_FS */