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

Version: ~ [ linux-5.12-rc1 ] ~ [ linux-5.11.2 ] ~ [ linux-5.10.19 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.101 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.177 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.222 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.258 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.258 ] ~ [ 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 %d flags 0x%x\n", map->epoch, map->flags);
 66 
 67         for (n = rb_first(&map->pg_pools); n; n = rb_next(n)) {
 68                 struct ceph_pg_pool_info *pi =
 69                         rb_entry(n, struct ceph_pg_pool_info, node);
 70 
 71                 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",
 72                            pi->id, pi->name, pi->type, pi->size, pi->min_size,
 73                            pi->pg_num, pi->pg_num_mask, pi->flags,
 74                            pi->last_force_request_resend, pi->read_tier,
 75                            pi->write_tier);
 76         }
 77         for (i = 0; i < map->max_osd; i++) {
 78                 struct ceph_entity_addr *addr = &map->osd_addr[i];
 79                 int state = map->osd_state[i];
 80                 char sb[64];
 81 
 82                 seq_printf(s, "osd%d\t%s\t%3d%%\t(%s)\t%3d%%\n",
 83                            i, ceph_pr_addr(&addr->in_addr),
 84                            ((map->osd_weight[i]*100) >> 16),
 85                            ceph_osdmap_state_str(sb, sizeof(sb), state),
 86                            ((ceph_get_primary_affinity(map, i)*100) >> 16));
 87         }
 88         for (n = rb_first(&map->pg_temp); n; n = rb_next(n)) {
 89                 struct ceph_pg_mapping *pg =
 90                         rb_entry(n, struct ceph_pg_mapping, node);
 91 
 92                 seq_printf(s, "pg_temp %llu.%x [", pg->pgid.pool,
 93                            pg->pgid.seed);
 94                 for (i = 0; i < pg->pg_temp.len; i++)
 95                         seq_printf(s, "%s%d", (i == 0 ? "" : ","),
 96                                    pg->pg_temp.osds[i]);
 97                 seq_printf(s, "]\n");
 98         }
 99         for (n = rb_first(&map->primary_temp); n; n = rb_next(n)) {
100                 struct ceph_pg_mapping *pg =
101                         rb_entry(n, struct ceph_pg_mapping, node);
102 
103                 seq_printf(s, "primary_temp %llu.%x %d\n", pg->pgid.pool,
104                            pg->pgid.seed, pg->primary_temp.osd);
105         }
106 
107         up_read(&osdc->lock);
108         return 0;
109 }
110 
111 static int monc_show(struct seq_file *s, void *p)
112 {
113         struct ceph_client *client = s->private;
114         struct ceph_mon_generic_request *req;
115         struct ceph_mon_client *monc = &client->monc;
116         struct rb_node *rp;
117         int i;
118 
119         mutex_lock(&monc->mutex);
120 
121         for (i = 0; i < ARRAY_SIZE(monc->subs); i++) {
122                 seq_printf(s, "have %s %u", ceph_sub_str[i],
123                            monc->subs[i].have);
124                 if (monc->subs[i].want)
125                         seq_printf(s, " want %llu%s",
126                                    le64_to_cpu(monc->subs[i].item.start),
127                                    (monc->subs[i].item.flags &
128                                         CEPH_SUBSCRIBE_ONETIME ?  "" : "+"));
129                 seq_putc(s, '\n');
130         }
131         seq_printf(s, "fs_cluster_id %d\n", monc->fs_cluster_id);
132 
133         for (rp = rb_first(&monc->generic_request_tree); rp; rp = rb_next(rp)) {
134                 __u16 op;
135                 req = rb_entry(rp, struct ceph_mon_generic_request, node);
136                 op = le16_to_cpu(req->request->hdr.type);
137                 if (op == CEPH_MSG_STATFS)
138                         seq_printf(s, "%llu statfs\n", req->tid);
139                 else if (op == CEPH_MSG_MON_GET_VERSION)
140                         seq_printf(s, "%llu mon_get_version", req->tid);
141                 else
142                         seq_printf(s, "%llu unknown\n", req->tid);
143         }
144 
145         mutex_unlock(&monc->mutex);
146         return 0;
147 }
148 
149 static void dump_target(struct seq_file *s, struct ceph_osd_request_target *t)
150 {
151         int i;
152 
153         seq_printf(s, "osd%d\t%llu.%x\t[", t->osd, t->pgid.pool, t->pgid.seed);
154         for (i = 0; i < t->up.size; i++)
155                 seq_printf(s, "%s%d", (!i ? "" : ","), t->up.osds[i]);
156         seq_printf(s, "]/%d\t[", t->up.primary);
157         for (i = 0; i < t->acting.size; i++)
158                 seq_printf(s, "%s%d", (!i ? "" : ","), t->acting.osds[i]);
159         seq_printf(s, "]/%d\t%*pE\t0x%x", t->acting.primary,
160                    t->target_oid.name_len, t->target_oid.name, t->flags);
161         if (t->paused)
162                 seq_puts(s, "\tP");
163 }
164 
165 static void dump_request(struct seq_file *s, struct ceph_osd_request *req)
166 {
167         int i;
168 
169         seq_printf(s, "%llu\t", req->r_tid);
170         dump_target(s, &req->r_t);
171 
172         seq_printf(s, "\t%d\t%u'%llu", req->r_attempts,
173                    le32_to_cpu(req->r_replay_version.epoch),
174                    le64_to_cpu(req->r_replay_version.version));
175 
176         for (i = 0; i < req->r_num_ops; i++) {
177                 struct ceph_osd_req_op *op = &req->r_ops[i];
178 
179                 seq_printf(s, "%s%s", (i == 0 ? "\t" : ","),
180                            ceph_osd_op_name(op->op));
181                 if (op->op == CEPH_OSD_OP_WATCH)
182                         seq_printf(s, "-%s",
183                                    ceph_osd_watch_op_name(op->watch.op));
184         }
185 
186         seq_putc(s, '\n');
187 }
188 
189 static void dump_requests(struct seq_file *s, struct ceph_osd *osd)
190 {
191         struct rb_node *n;
192 
193         mutex_lock(&osd->lock);
194         for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) {
195                 struct ceph_osd_request *req =
196                     rb_entry(n, struct ceph_osd_request, r_node);
197 
198                 dump_request(s, req);
199         }
200 
201         mutex_unlock(&osd->lock);
202 }
203 
204 static void dump_linger_request(struct seq_file *s,
205                                 struct ceph_osd_linger_request *lreq)
206 {
207         seq_printf(s, "%llu\t", lreq->linger_id);
208         dump_target(s, &lreq->t);
209 
210         seq_printf(s, "\t%u\t%s%s/%d\n", lreq->register_gen,
211                    lreq->is_watch ? "W" : "N", lreq->committed ? "C" : "",
212                    lreq->last_error);
213 }
214 
215 static void dump_linger_requests(struct seq_file *s, struct ceph_osd *osd)
216 {
217         struct rb_node *n;
218 
219         mutex_lock(&osd->lock);
220         for (n = rb_first(&osd->o_linger_requests); n; n = rb_next(n)) {
221                 struct ceph_osd_linger_request *lreq =
222                     rb_entry(n, struct ceph_osd_linger_request, node);
223 
224                 dump_linger_request(s, lreq);
225         }
226 
227         mutex_unlock(&osd->lock);
228 }
229 
230 static int osdc_show(struct seq_file *s, void *pp)
231 {
232         struct ceph_client *client = s->private;
233         struct ceph_osd_client *osdc = &client->osdc;
234         struct rb_node *n;
235 
236         down_read(&osdc->lock);
237         seq_printf(s, "REQUESTS %d homeless %d\n",
238                    atomic_read(&osdc->num_requests),
239                    atomic_read(&osdc->num_homeless));
240         for (n = rb_first(&osdc->osds); n; n = rb_next(n)) {
241                 struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node);
242 
243                 dump_requests(s, osd);
244         }
245         dump_requests(s, &osdc->homeless_osd);
246 
247         seq_puts(s, "LINGER REQUESTS\n");
248         for (n = rb_first(&osdc->osds); n; n = rb_next(n)) {
249                 struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node);
250 
251                 dump_linger_requests(s, osd);
252         }
253         dump_linger_requests(s, &osdc->homeless_osd);
254 
255         up_read(&osdc->lock);
256         return 0;
257 }
258 
259 static int client_options_show(struct seq_file *s, void *p)
260 {
261         struct ceph_client *client = s->private;
262         int ret;
263 
264         ret = ceph_print_client_options(s, client);
265         if (ret)
266                 return ret;
267 
268         seq_putc(s, '\n');
269         return 0;
270 }
271 
272 CEPH_DEFINE_SHOW_FUNC(monmap_show)
273 CEPH_DEFINE_SHOW_FUNC(osdmap_show)
274 CEPH_DEFINE_SHOW_FUNC(monc_show)
275 CEPH_DEFINE_SHOW_FUNC(osdc_show)
276 CEPH_DEFINE_SHOW_FUNC(client_options_show)
277 
278 int ceph_debugfs_init(void)
279 {
280         ceph_debugfs_dir = debugfs_create_dir("ceph", NULL);
281         if (!ceph_debugfs_dir)
282                 return -ENOMEM;
283         return 0;
284 }
285 
286 void ceph_debugfs_cleanup(void)
287 {
288         debugfs_remove(ceph_debugfs_dir);
289 }
290 
291 int ceph_debugfs_client_init(struct ceph_client *client)
292 {
293         int ret = -ENOMEM;
294         char name[80];
295 
296         snprintf(name, sizeof(name), "%pU.client%lld", &client->fsid,
297                  client->monc.auth->global_id);
298 
299         dout("ceph_debugfs_client_init %p %s\n", client, name);
300 
301         BUG_ON(client->debugfs_dir);
302         client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir);
303         if (!client->debugfs_dir)
304                 goto out;
305 
306         client->monc.debugfs_file = debugfs_create_file("monc",
307                                                       0600,
308                                                       client->debugfs_dir,
309                                                       client,
310                                                       &monc_show_fops);
311         if (!client->monc.debugfs_file)
312                 goto out;
313 
314         client->osdc.debugfs_file = debugfs_create_file("osdc",
315                                                       0600,
316                                                       client->debugfs_dir,
317                                                       client,
318                                                       &osdc_show_fops);
319         if (!client->osdc.debugfs_file)
320                 goto out;
321 
322         client->debugfs_monmap = debugfs_create_file("monmap",
323                                         0600,
324                                         client->debugfs_dir,
325                                         client,
326                                         &monmap_show_fops);
327         if (!client->debugfs_monmap)
328                 goto out;
329 
330         client->debugfs_osdmap = debugfs_create_file("osdmap",
331                                         0600,
332                                         client->debugfs_dir,
333                                         client,
334                                         &osdmap_show_fops);
335         if (!client->debugfs_osdmap)
336                 goto out;
337 
338         client->debugfs_options = debugfs_create_file("client_options",
339                                         0600,
340                                         client->debugfs_dir,
341                                         client,
342                                         &client_options_show_fops);
343         if (!client->debugfs_options)
344                 goto out;
345 
346         return 0;
347 
348 out:
349         ceph_debugfs_client_cleanup(client);
350         return ret;
351 }
352 
353 void ceph_debugfs_client_cleanup(struct ceph_client *client)
354 {
355         dout("ceph_debugfs_client_cleanup %p\n", client);
356         debugfs_remove(client->debugfs_options);
357         debugfs_remove(client->debugfs_osdmap);
358         debugfs_remove(client->debugfs_monmap);
359         debugfs_remove(client->osdc.debugfs_file);
360         debugfs_remove(client->monc.debugfs_file);
361         debugfs_remove(client->debugfs_dir);
362 }
363 
364 #else  /* CONFIG_DEBUG_FS */
365 
366 int ceph_debugfs_init(void)
367 {
368         return 0;
369 }
370 
371 void ceph_debugfs_cleanup(void)
372 {
373 }
374 
375 int ceph_debugfs_client_init(struct ceph_client *client)
376 {
377         return 0;
378 }
379 
380 void ceph_debugfs_client_cleanup(struct ceph_client *client)
381 {
382 }
383 
384 #endif  /* CONFIG_DEBUG_FS */
385 
386 EXPORT_SYMBOL(ceph_debugfs_init);
387 EXPORT_SYMBOL(ceph_debugfs_cleanup);
388 

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