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TOMOYO Linux Cross Reference
Linux/net/ceph/debugfs.c

Version: ~ [ linux-5.12-rc7 ] ~ [ linux-5.11.13 ] ~ [ linux-5.10.29 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.111 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.186 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.230 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.266 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.266 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.18.140 ] ~ [ linux-3.16.85 ] ~ [ linux-3.14.79 ] ~ [ linux-3.12.74 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  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 #ifdef CONFIG_DEBUG_FS
 16 
 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  *      .../monmap      - current monmap
 23  *      .../osdc        - active osd requests
 24  *      .../monc        - mon client state
 25  *      .../client_options - libceph-only (i.e. not rbd or cephfs) options
 26  *      .../dentry_lru  - dump contents of dentry lru
 27  *      .../caps        - expose cap (reservation) stats
 28  *      .../bdi         - symlink to ../../bdi/something
 29  */
 30 
 31 static struct dentry *ceph_debugfs_dir;
 32 
 33 static int monmap_show(struct seq_file *s, void *p)
 34 {
 35         int i;
 36         struct ceph_client *client = s->private;
 37 
 38         if (client->monc.monmap == NULL)
 39                 return 0;
 40 
 41         seq_printf(s, "epoch %d\n", client->monc.monmap->epoch);
 42         for (i = 0; i < client->monc.monmap->num_mon; i++) {
 43                 struct ceph_entity_inst *inst =
 44                         &client->monc.monmap->mon_inst[i];
 45 
 46                 seq_printf(s, "\t%s%lld\t%s\n",
 47                            ENTITY_NAME(inst->name),
 48                            ceph_pr_addr(&inst->addr.in_addr));
 49         }
 50         return 0;
 51 }
 52 
 53 static int osdmap_show(struct seq_file *s, void *p)
 54 {
 55         int i;
 56         struct ceph_client *client = s->private;
 57         struct ceph_osd_client *osdc = &client->osdc;
 58         struct ceph_osdmap *map = osdc->osdmap;
 59         struct rb_node *n;
 60 
 61         if (map == NULL)
 62                 return 0;
 63 
 64         down_read(&osdc->lock);
 65         seq_printf(s, "epoch %u barrier %u flags 0x%x\n", map->epoch,
 66                         osdc->epoch_barrier, map->flags);
 67 
 68         for (n = rb_first(&map->pg_pools); n; n = rb_next(n)) {
 69                 struct ceph_pg_pool_info *pi =
 70                         rb_entry(n, struct ceph_pg_pool_info, node);
 71 
 72                 seq_printf(s, "pool %lld '%s' type %d size %d min_size %d pg_num %u pg_num_mask %d flags 0x%llx lfor %u read_tier %lld write_tier %lld\n",
 73                            pi->id, pi->name, pi->type, pi->size, pi->min_size,
 74                            pi->pg_num, pi->pg_num_mask, pi->flags,
 75                            pi->last_force_request_resend, pi->read_tier,
 76                            pi->write_tier);
 77         }
 78         for (i = 0; i < map->max_osd; i++) {
 79                 struct ceph_entity_addr *addr = &map->osd_addr[i];
 80                 int state = map->osd_state[i];
 81                 char sb[64];
 82 
 83                 seq_printf(s, "osd%d\t%s\t%3d%%\t(%s)\t%3d%%\n",
 84                            i, ceph_pr_addr(&addr->in_addr),
 85                            ((map->osd_weight[i]*100) >> 16),
 86                            ceph_osdmap_state_str(sb, sizeof(sb), state),
 87                            ((ceph_get_primary_affinity(map, i)*100) >> 16));
 88         }
 89         for (n = rb_first(&map->pg_temp); n; n = rb_next(n)) {
 90                 struct ceph_pg_mapping *pg =
 91                         rb_entry(n, struct ceph_pg_mapping, node);
 92 
 93                 seq_printf(s, "pg_temp %llu.%x [", pg->pgid.pool,
 94                            pg->pgid.seed);
 95                 for (i = 0; i < pg->pg_temp.len; i++)
 96                         seq_printf(s, "%s%d", (i == 0 ? "" : ","),
 97                                    pg->pg_temp.osds[i]);
 98                 seq_printf(s, "]\n");
 99         }
100         for (n = rb_first(&map->primary_temp); n; n = rb_next(n)) {
101                 struct ceph_pg_mapping *pg =
102                         rb_entry(n, struct ceph_pg_mapping, node);
103 
104                 seq_printf(s, "primary_temp %llu.%x %d\n", pg->pgid.pool,
105                            pg->pgid.seed, pg->primary_temp.osd);
106         }
107 
108         up_read(&osdc->lock);
109         return 0;
110 }
111 
112 static int monc_show(struct seq_file *s, void *p)
113 {
114         struct ceph_client *client = s->private;
115         struct ceph_mon_generic_request *req;
116         struct ceph_mon_client *monc = &client->monc;
117         struct rb_node *rp;
118         int i;
119 
120         mutex_lock(&monc->mutex);
121 
122         for (i = 0; i < ARRAY_SIZE(monc->subs); i++) {
123                 seq_printf(s, "have %s %u", ceph_sub_str[i],
124                            monc->subs[i].have);
125                 if (monc->subs[i].want)
126                         seq_printf(s, " want %llu%s",
127                                    le64_to_cpu(monc->subs[i].item.start),
128                                    (monc->subs[i].item.flags &
129                                         CEPH_SUBSCRIBE_ONETIME ?  "" : "+"));
130                 seq_putc(s, '\n');
131         }
132         seq_printf(s, "fs_cluster_id %d\n", monc->fs_cluster_id);
133 
134         for (rp = rb_first(&monc->generic_request_tree); rp; rp = rb_next(rp)) {
135                 __u16 op;
136                 req = rb_entry(rp, struct ceph_mon_generic_request, node);
137                 op = le16_to_cpu(req->request->hdr.type);
138                 if (op == CEPH_MSG_STATFS)
139                         seq_printf(s, "%llu statfs\n", req->tid);
140                 else if (op == CEPH_MSG_MON_GET_VERSION)
141                         seq_printf(s, "%llu mon_get_version", req->tid);
142                 else
143                         seq_printf(s, "%llu unknown\n", req->tid);
144         }
145 
146         mutex_unlock(&monc->mutex);
147         return 0;
148 }
149 
150 static void dump_target(struct seq_file *s, struct ceph_osd_request_target *t)
151 {
152         int i;
153 
154         seq_printf(s, "osd%d\t%llu.%x\t[", t->osd, t->pgid.pool, t->pgid.seed);
155         for (i = 0; i < t->up.size; i++)
156                 seq_printf(s, "%s%d", (!i ? "" : ","), t->up.osds[i]);
157         seq_printf(s, "]/%d\t[", t->up.primary);
158         for (i = 0; i < t->acting.size; i++)
159                 seq_printf(s, "%s%d", (!i ? "" : ","), t->acting.osds[i]);
160         seq_printf(s, "]/%d\t", t->acting.primary);
161         if (t->target_oloc.pool_ns) {
162                 seq_printf(s, "%*pE/%*pE\t0x%x",
163                         (int)t->target_oloc.pool_ns->len,
164                         t->target_oloc.pool_ns->str,
165                         t->target_oid.name_len, t->target_oid.name, t->flags);
166         } else {
167                 seq_printf(s, "%*pE\t0x%x", t->target_oid.name_len,
168                         t->target_oid.name, t->flags);
169         }
170         if (t->paused)
171                 seq_puts(s, "\tP");
172 }
173 
174 static void dump_request(struct seq_file *s, struct ceph_osd_request *req)
175 {
176         int i;
177 
178         seq_printf(s, "%llu\t", req->r_tid);
179         dump_target(s, &req->r_t);
180 
181         seq_printf(s, "\t%d", req->r_attempts);
182 
183         for (i = 0; i < req->r_num_ops; i++) {
184                 struct ceph_osd_req_op *op = &req->r_ops[i];
185 
186                 seq_printf(s, "%s%s", (i == 0 ? "\t" : ","),
187                            ceph_osd_op_name(op->op));
188                 if (op->op == CEPH_OSD_OP_WATCH)
189                         seq_printf(s, "-%s",
190                                    ceph_osd_watch_op_name(op->watch.op));
191         }
192 
193         seq_putc(s, '\n');
194 }
195 
196 static void dump_requests(struct seq_file *s, struct ceph_osd *osd)
197 {
198         struct rb_node *n;
199 
200         mutex_lock(&osd->lock);
201         for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) {
202                 struct ceph_osd_request *req =
203                     rb_entry(n, struct ceph_osd_request, r_node);
204 
205                 dump_request(s, req);
206         }
207 
208         mutex_unlock(&osd->lock);
209 }
210 
211 static void dump_linger_request(struct seq_file *s,
212                                 struct ceph_osd_linger_request *lreq)
213 {
214         seq_printf(s, "%llu\t", lreq->linger_id);
215         dump_target(s, &lreq->t);
216 
217         seq_printf(s, "\t%u\t%s%s/%d\n", lreq->register_gen,
218                    lreq->is_watch ? "W" : "N", lreq->committed ? "C" : "",
219                    lreq->last_error);
220 }
221 
222 static void dump_linger_requests(struct seq_file *s, struct ceph_osd *osd)
223 {
224         struct rb_node *n;
225 
226         mutex_lock(&osd->lock);
227         for (n = rb_first(&osd->o_linger_requests); n; n = rb_next(n)) {
228                 struct ceph_osd_linger_request *lreq =
229                     rb_entry(n, struct ceph_osd_linger_request, node);
230 
231                 dump_linger_request(s, lreq);
232         }
233 
234         mutex_unlock(&osd->lock);
235 }
236 
237 static int osdc_show(struct seq_file *s, void *pp)
238 {
239         struct ceph_client *client = s->private;
240         struct ceph_osd_client *osdc = &client->osdc;
241         struct rb_node *n;
242 
243         down_read(&osdc->lock);
244         seq_printf(s, "REQUESTS %d homeless %d\n",
245                    atomic_read(&osdc->num_requests),
246                    atomic_read(&osdc->num_homeless));
247         for (n = rb_first(&osdc->osds); n; n = rb_next(n)) {
248                 struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node);
249 
250                 dump_requests(s, osd);
251         }
252         dump_requests(s, &osdc->homeless_osd);
253 
254         seq_puts(s, "LINGER REQUESTS\n");
255         for (n = rb_first(&osdc->osds); n; n = rb_next(n)) {
256                 struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node);
257 
258                 dump_linger_requests(s, osd);
259         }
260         dump_linger_requests(s, &osdc->homeless_osd);
261 
262         up_read(&osdc->lock);
263         return 0;
264 }
265 
266 static int client_options_show(struct seq_file *s, void *p)
267 {
268         struct ceph_client *client = s->private;
269         int ret;
270 
271         ret = ceph_print_client_options(s, client);
272         if (ret)
273                 return ret;
274 
275         seq_putc(s, '\n');
276         return 0;
277 }
278 
279 CEPH_DEFINE_SHOW_FUNC(monmap_show)
280 CEPH_DEFINE_SHOW_FUNC(osdmap_show)
281 CEPH_DEFINE_SHOW_FUNC(monc_show)
282 CEPH_DEFINE_SHOW_FUNC(osdc_show)
283 CEPH_DEFINE_SHOW_FUNC(client_options_show)
284 
285 int ceph_debugfs_init(void)
286 {
287         ceph_debugfs_dir = debugfs_create_dir("ceph", NULL);
288         if (!ceph_debugfs_dir)
289                 return -ENOMEM;
290         return 0;
291 }
292 
293 void ceph_debugfs_cleanup(void)
294 {
295         debugfs_remove(ceph_debugfs_dir);
296 }
297 
298 int ceph_debugfs_client_init(struct ceph_client *client)
299 {
300         int ret = -ENOMEM;
301         char name[80];
302 
303         snprintf(name, sizeof(name), "%pU.client%lld", &client->fsid,
304                  client->monc.auth->global_id);
305 
306         dout("ceph_debugfs_client_init %p %s\n", client, name);
307 
308         BUG_ON(client->debugfs_dir);
309         client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir);
310         if (!client->debugfs_dir)
311                 goto out;
312 
313         client->monc.debugfs_file = debugfs_create_file("monc",
314                                                       0600,
315                                                       client->debugfs_dir,
316                                                       client,
317                                                       &monc_show_fops);
318         if (!client->monc.debugfs_file)
319                 goto out;
320 
321         client->osdc.debugfs_file = debugfs_create_file("osdc",
322                                                       0600,
323                                                       client->debugfs_dir,
324                                                       client,
325                                                       &osdc_show_fops);
326         if (!client->osdc.debugfs_file)
327                 goto out;
328 
329         client->debugfs_monmap = debugfs_create_file("monmap",
330                                         0600,
331                                         client->debugfs_dir,
332                                         client,
333                                         &monmap_show_fops);
334         if (!client->debugfs_monmap)
335                 goto out;
336 
337         client->debugfs_osdmap = debugfs_create_file("osdmap",
338                                         0600,
339                                         client->debugfs_dir,
340                                         client,
341                                         &osdmap_show_fops);
342         if (!client->debugfs_osdmap)
343                 goto out;
344 
345         client->debugfs_options = debugfs_create_file("client_options",
346                                         0600,
347                                         client->debugfs_dir,
348                                         client,
349                                         &client_options_show_fops);
350         if (!client->debugfs_options)
351                 goto out;
352 
353         return 0;
354 
355 out:
356         ceph_debugfs_client_cleanup(client);
357         return ret;
358 }
359 
360 void ceph_debugfs_client_cleanup(struct ceph_client *client)
361 {
362         dout("ceph_debugfs_client_cleanup %p\n", client);
363         debugfs_remove(client->debugfs_options);
364         debugfs_remove(client->debugfs_osdmap);
365         debugfs_remove(client->debugfs_monmap);
366         debugfs_remove(client->osdc.debugfs_file);
367         debugfs_remove(client->monc.debugfs_file);
368         debugfs_remove(client->debugfs_dir);
369 }
370 
371 #else  /* CONFIG_DEBUG_FS */
372 
373 int ceph_debugfs_init(void)
374 {
375         return 0;
376 }
377 
378 void ceph_debugfs_cleanup(void)
379 {
380 }
381 
382 int ceph_debugfs_client_init(struct ceph_client *client)
383 {
384         return 0;
385 }
386 
387 void ceph_debugfs_client_cleanup(struct ceph_client *client)
388 {
389 }
390 
391 #endif  /* CONFIG_DEBUG_FS */
392 
393 EXPORT_SYMBOL(ceph_debugfs_init);
394 EXPORT_SYMBOL(ceph_debugfs_cleanup);
395 

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