Commit | Line | Data |
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328970de | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
fa60ce2c | 2 | /* |
6714d8e8 KH |
3 | * dlmdebug.c |
4 | * | |
5 | * debug functionality for the dlm | |
6 | * | |
c834cdb1 | 7 | * Copyright (C) 2004, 2008 Oracle. All rights reserved. |
6714d8e8 KH |
8 | */ |
9 | ||
10 | #include <linux/types.h> | |
11 | #include <linux/slab.h> | |
12 | #include <linux/highmem.h> | |
6714d8e8 KH |
13 | #include <linux/sysctl.h> |
14 | #include <linux/spinlock.h> | |
6325b4a2 | 15 | #include <linux/debugfs.h> |
afeacc8c | 16 | #include <linux/export.h> |
6714d8e8 | 17 | |
ca322fb6 MY |
18 | #include "../cluster/heartbeat.h" |
19 | #include "../cluster/nodemanager.h" | |
20 | #include "../cluster/tcp.h" | |
6714d8e8 KH |
21 | |
22 | #include "dlmapi.h" | |
23 | #include "dlmcommon.h" | |
6714d8e8 | 24 | #include "dlmdomain.h" |
6325b4a2 | 25 | #include "dlmdebug.h" |
6714d8e8 KH |
26 | |
27 | #define MLOG_MASK_PREFIX ML_DLM | |
ca322fb6 | 28 | #include "../cluster/masklog.h" |
6714d8e8 | 29 | |
95642e56 AB |
30 | static int stringify_lockname(const char *lockname, int locklen, char *buf, |
31 | int len); | |
c834cdb1 | 32 | |
6714d8e8 KH |
33 | void dlm_print_one_lock_resource(struct dlm_lock_resource *res) |
34 | { | |
6714d8e8 KH |
35 | spin_lock(&res->spinlock); |
36 | __dlm_print_one_lock_resource(res); | |
37 | spin_unlock(&res->spinlock); | |
38 | } | |
39 | ||
ba2bf218 KH |
40 | static void dlm_print_lockres_refmap(struct dlm_lock_resource *res) |
41 | { | |
42 | int bit; | |
43 | assert_spin_locked(&res->spinlock); | |
44 | ||
8f50eb97 | 45 | printk(" refmap nodes: [ "); |
ba2bf218 KH |
46 | bit = 0; |
47 | while (1) { | |
48 | bit = find_next_bit(res->refmap, O2NM_MAX_NODES, bit); | |
49 | if (bit >= O2NM_MAX_NODES) | |
50 | break; | |
8f50eb97 | 51 | printk("%u ", bit); |
ba2bf218 KH |
52 | bit++; |
53 | } | |
8f50eb97 | 54 | printk("], inflight=%u\n", res->inflight_locks); |
c834cdb1 SM |
55 | } |
56 | ||
57 | static void __dlm_print_lock(struct dlm_lock *lock) | |
58 | { | |
59 | spin_lock(&lock->spinlock); | |
60 | ||
8f50eb97 | 61 | printk(" type=%d, conv=%d, node=%u, cookie=%u:%llu, " |
c834cdb1 SM |
62 | "ref=%u, ast=(empty=%c,pend=%c), bast=(empty=%c,pend=%c), " |
63 | "pending=(conv=%c,lock=%c,cancel=%c,unlock=%c)\n", | |
64 | lock->ml.type, lock->ml.convert_type, lock->ml.node, | |
65 | dlm_get_lock_cookie_node(be64_to_cpu(lock->ml.cookie)), | |
66 | dlm_get_lock_cookie_seq(be64_to_cpu(lock->ml.cookie)), | |
2c935bc5 | 67 | kref_read(&lock->lock_refs), |
c834cdb1 SM |
68 | (list_empty(&lock->ast_list) ? 'y' : 'n'), |
69 | (lock->ast_pending ? 'y' : 'n'), | |
70 | (list_empty(&lock->bast_list) ? 'y' : 'n'), | |
71 | (lock->bast_pending ? 'y' : 'n'), | |
72 | (lock->convert_pending ? 'y' : 'n'), | |
73 | (lock->lock_pending ? 'y' : 'n'), | |
74 | (lock->cancel_pending ? 'y' : 'n'), | |
75 | (lock->unlock_pending ? 'y' : 'n')); | |
76 | ||
77 | spin_unlock(&lock->spinlock); | |
ba2bf218 KH |
78 | } |
79 | ||
6714d8e8 KH |
80 | void __dlm_print_one_lock_resource(struct dlm_lock_resource *res) |
81 | { | |
6714d8e8 | 82 | struct dlm_lock *lock; |
c834cdb1 | 83 | char buf[DLM_LOCKID_NAME_MAX]; |
6714d8e8 KH |
84 | |
85 | assert_spin_locked(&res->spinlock); | |
86 | ||
c834cdb1 | 87 | stringify_lockname(res->lockname.name, res->lockname.len, |
86a06aba | 88 | buf, sizeof(buf)); |
8f50eb97 | 89 | printk("lockres: %s, owner=%u, state=%u\n", |
c834cdb1 | 90 | buf, res->owner, res->state); |
8f50eb97 | 91 | printk(" last used: %lu, refcnt: %u, on purge list: %s\n", |
2c935bc5 | 92 | res->last_used, kref_read(&res->refs), |
c834cdb1 | 93 | list_empty(&res->purge) ? "no" : "yes"); |
8f50eb97 | 94 | printk(" on dirty list: %s, on reco list: %s, " |
c834cdb1 SM |
95 | "migrating pending: %s\n", |
96 | list_empty(&res->dirty) ? "no" : "yes", | |
97 | list_empty(&res->recovering) ? "no" : "yes", | |
98 | res->migration_pending ? "yes" : "no"); | |
8f50eb97 | 99 | printk(" inflight locks: %d, asts reserved: %d\n", |
c834cdb1 | 100 | res->inflight_locks, atomic_read(&res->asts_reserved)); |
ba2bf218 | 101 | dlm_print_lockres_refmap(res); |
8f50eb97 | 102 | printk(" granted queue:\n"); |
df53cd3b | 103 | list_for_each_entry(lock, &res->granted, list) { |
c834cdb1 | 104 | __dlm_print_lock(lock); |
6714d8e8 | 105 | } |
8f50eb97 | 106 | printk(" converting queue:\n"); |
df53cd3b | 107 | list_for_each_entry(lock, &res->converting, list) { |
c834cdb1 | 108 | __dlm_print_lock(lock); |
6714d8e8 | 109 | } |
8f50eb97 | 110 | printk(" blocked queue:\n"); |
df53cd3b | 111 | list_for_each_entry(lock, &res->blocked, list) { |
c834cdb1 | 112 | __dlm_print_lock(lock); |
6714d8e8 KH |
113 | } |
114 | } | |
115 | ||
116 | void dlm_print_one_lock(struct dlm_lock *lockid) | |
117 | { | |
118 | dlm_print_one_lock_resource(lockid->lockres); | |
119 | } | |
120 | EXPORT_SYMBOL_GPL(dlm_print_one_lock); | |
121 | ||
6714d8e8 KH |
122 | static const char *dlm_errnames[] = { |
123 | [DLM_NORMAL] = "DLM_NORMAL", | |
124 | [DLM_GRANTED] = "DLM_GRANTED", | |
125 | [DLM_DENIED] = "DLM_DENIED", | |
126 | [DLM_DENIED_NOLOCKS] = "DLM_DENIED_NOLOCKS", | |
127 | [DLM_WORKING] = "DLM_WORKING", | |
128 | [DLM_BLOCKED] = "DLM_BLOCKED", | |
129 | [DLM_BLOCKED_ORPHAN] = "DLM_BLOCKED_ORPHAN", | |
130 | [DLM_DENIED_GRACE_PERIOD] = "DLM_DENIED_GRACE_PERIOD", | |
131 | [DLM_SYSERR] = "DLM_SYSERR", | |
132 | [DLM_NOSUPPORT] = "DLM_NOSUPPORT", | |
133 | [DLM_CANCELGRANT] = "DLM_CANCELGRANT", | |
134 | [DLM_IVLOCKID] = "DLM_IVLOCKID", | |
135 | [DLM_SYNC] = "DLM_SYNC", | |
136 | [DLM_BADTYPE] = "DLM_BADTYPE", | |
137 | [DLM_BADRESOURCE] = "DLM_BADRESOURCE", | |
138 | [DLM_MAXHANDLES] = "DLM_MAXHANDLES", | |
139 | [DLM_NOCLINFO] = "DLM_NOCLINFO", | |
140 | [DLM_NOLOCKMGR] = "DLM_NOLOCKMGR", | |
141 | [DLM_NOPURGED] = "DLM_NOPURGED", | |
142 | [DLM_BADARGS] = "DLM_BADARGS", | |
143 | [DLM_VOID] = "DLM_VOID", | |
144 | [DLM_NOTQUEUED] = "DLM_NOTQUEUED", | |
145 | [DLM_IVBUFLEN] = "DLM_IVBUFLEN", | |
146 | [DLM_CVTUNGRANT] = "DLM_CVTUNGRANT", | |
147 | [DLM_BADPARAM] = "DLM_BADPARAM", | |
148 | [DLM_VALNOTVALID] = "DLM_VALNOTVALID", | |
149 | [DLM_REJECTED] = "DLM_REJECTED", | |
150 | [DLM_ABORT] = "DLM_ABORT", | |
151 | [DLM_CANCEL] = "DLM_CANCEL", | |
152 | [DLM_IVRESHANDLE] = "DLM_IVRESHANDLE", | |
153 | [DLM_DEADLOCK] = "DLM_DEADLOCK", | |
154 | [DLM_DENIED_NOASTS] = "DLM_DENIED_NOASTS", | |
155 | [DLM_FORWARD] = "DLM_FORWARD", | |
156 | [DLM_TIMEOUT] = "DLM_TIMEOUT", | |
157 | [DLM_IVGROUPID] = "DLM_IVGROUPID", | |
158 | [DLM_VERS_CONFLICT] = "DLM_VERS_CONFLICT", | |
159 | [DLM_BAD_DEVICE_PATH] = "DLM_BAD_DEVICE_PATH", | |
160 | [DLM_NO_DEVICE_PERMISSION] = "DLM_NO_DEVICE_PERMISSION", | |
161 | [DLM_NO_CONTROL_DEVICE ] = "DLM_NO_CONTROL_DEVICE ", | |
162 | [DLM_RECOVERING] = "DLM_RECOVERING", | |
163 | [DLM_MIGRATING] = "DLM_MIGRATING", | |
164 | [DLM_MAXSTATS] = "DLM_MAXSTATS", | |
165 | }; | |
166 | ||
167 | static const char *dlm_errmsgs[] = { | |
168 | [DLM_NORMAL] = "request in progress", | |
169 | [DLM_GRANTED] = "request granted", | |
170 | [DLM_DENIED] = "request denied", | |
171 | [DLM_DENIED_NOLOCKS] = "request denied, out of system resources", | |
172 | [DLM_WORKING] = "async request in progress", | |
173 | [DLM_BLOCKED] = "lock request blocked", | |
174 | [DLM_BLOCKED_ORPHAN] = "lock request blocked by a orphan lock", | |
175 | [DLM_DENIED_GRACE_PERIOD] = "topological change in progress", | |
176 | [DLM_SYSERR] = "system error", | |
177 | [DLM_NOSUPPORT] = "unsupported", | |
178 | [DLM_CANCELGRANT] = "can't cancel convert: already granted", | |
179 | [DLM_IVLOCKID] = "bad lockid", | |
180 | [DLM_SYNC] = "synchronous request granted", | |
181 | [DLM_BADTYPE] = "bad resource type", | |
182 | [DLM_BADRESOURCE] = "bad resource handle", | |
183 | [DLM_MAXHANDLES] = "no more resource handles", | |
184 | [DLM_NOCLINFO] = "can't contact cluster manager", | |
185 | [DLM_NOLOCKMGR] = "can't contact lock manager", | |
186 | [DLM_NOPURGED] = "can't contact purge daemon", | |
187 | [DLM_BADARGS] = "bad api args", | |
188 | [DLM_VOID] = "no status", | |
189 | [DLM_NOTQUEUED] = "NOQUEUE was specified and request failed", | |
190 | [DLM_IVBUFLEN] = "invalid resource name length", | |
191 | [DLM_CVTUNGRANT] = "attempted to convert ungranted lock", | |
192 | [DLM_BADPARAM] = "invalid lock mode specified", | |
193 | [DLM_VALNOTVALID] = "value block has been invalidated", | |
194 | [DLM_REJECTED] = "request rejected, unrecognized client", | |
195 | [DLM_ABORT] = "blocked lock request cancelled", | |
196 | [DLM_CANCEL] = "conversion request cancelled", | |
197 | [DLM_IVRESHANDLE] = "invalid resource handle", | |
198 | [DLM_DEADLOCK] = "deadlock recovery refused this request", | |
199 | [DLM_DENIED_NOASTS] = "failed to allocate AST", | |
200 | [DLM_FORWARD] = "request must wait for primary's response", | |
201 | [DLM_TIMEOUT] = "timeout value for lock has expired", | |
202 | [DLM_IVGROUPID] = "invalid group specification", | |
203 | [DLM_VERS_CONFLICT] = "version conflicts prevent request handling", | |
204 | [DLM_BAD_DEVICE_PATH] = "Locks device does not exist or path wrong", | |
205 | [DLM_NO_DEVICE_PERMISSION] = "Client has insufficient perms for device", | |
206 | [DLM_NO_CONTROL_DEVICE] = "Cannot set options on opened device ", | |
207 | [DLM_RECOVERING] = "lock resource being recovered", | |
208 | [DLM_MIGRATING] = "lock resource being migrated", | |
209 | [DLM_MAXSTATS] = "invalid error number", | |
210 | }; | |
211 | ||
212 | const char *dlm_errmsg(enum dlm_status err) | |
213 | { | |
214 | if (err >= DLM_MAXSTATS || err < 0) | |
215 | return dlm_errmsgs[DLM_MAXSTATS]; | |
216 | return dlm_errmsgs[err]; | |
217 | } | |
218 | EXPORT_SYMBOL_GPL(dlm_errmsg); | |
219 | ||
220 | const char *dlm_errname(enum dlm_status err) | |
221 | { | |
222 | if (err >= DLM_MAXSTATS || err < 0) | |
223 | return dlm_errnames[DLM_MAXSTATS]; | |
224 | return dlm_errnames[err]; | |
225 | } | |
226 | EXPORT_SYMBOL_GPL(dlm_errname); | |
6325b4a2 | 227 | |
4e3d24ed SM |
228 | /* NOTE: This function converts a lockname into a string. It uses knowledge |
229 | * of the format of the lockname that should be outside the purview of the dlm. | |
230 | * We are adding only to make dlm debugging slightly easier. | |
231 | * | |
232 | * For more on lockname formats, please refer to dlmglue.c and ocfs2_lockid.h. | |
233 | */ | |
95642e56 AB |
234 | static int stringify_lockname(const char *lockname, int locklen, char *buf, |
235 | int len) | |
4e3d24ed SM |
236 | { |
237 | int out = 0; | |
238 | __be64 inode_blkno_be; | |
239 | ||
240 | #define OCFS2_DENTRY_LOCK_INO_START 18 | |
241 | if (*lockname == 'N') { | |
242 | memcpy((__be64 *)&inode_blkno_be, | |
243 | (char *)&lockname[OCFS2_DENTRY_LOCK_INO_START], | |
244 | sizeof(__be64)); | |
d293d3af | 245 | out += scnprintf(buf + out, len - out, "%.*s%08x", |
4e3d24ed SM |
246 | OCFS2_DENTRY_LOCK_INO_START - 1, lockname, |
247 | (unsigned int)be64_to_cpu(inode_blkno_be)); | |
248 | } else | |
d293d3af | 249 | out += scnprintf(buf + out, len - out, "%.*s", |
4e3d24ed SM |
250 | locklen, lockname); |
251 | return out; | |
252 | } | |
253 | ||
e5a0334c SM |
254 | static int stringify_nodemap(unsigned long *nodemap, int maxnodes, |
255 | char *buf, int len) | |
256 | { | |
257 | int out = 0; | |
258 | int i = -1; | |
259 | ||
260 | while ((i = find_next_bit(nodemap, maxnodes, i + 1)) < maxnodes) | |
d293d3af | 261 | out += scnprintf(buf + out, len - out, "%d ", i); |
e5a0334c SM |
262 | |
263 | return out; | |
264 | } | |
265 | ||
266 | static int dump_mle(struct dlm_master_list_entry *mle, char *buf, int len) | |
267 | { | |
268 | int out = 0; | |
e5a0334c SM |
269 | char *mle_type; |
270 | ||
e5a0334c SM |
271 | if (mle->type == DLM_MLE_BLOCK) |
272 | mle_type = "BLK"; | |
273 | else if (mle->type == DLM_MLE_MASTER) | |
274 | mle_type = "MAS"; | |
275 | else | |
276 | mle_type = "MIG"; | |
277 | ||
7141514b | 278 | out += stringify_lockname(mle->mname, mle->mnamelen, buf + out, len - out); |
d293d3af | 279 | out += scnprintf(buf + out, len - out, |
e5a0334c SM |
280 | "\t%3s\tmas=%3u\tnew=%3u\tevt=%1d\tuse=%1d\tref=%3d\n", |
281 | mle_type, mle->master, mle->new_master, | |
282 | !list_empty(&mle->hb_events), | |
283 | !!mle->inuse, | |
2c935bc5 | 284 | kref_read(&mle->mle_refs)); |
e5a0334c | 285 | |
d293d3af | 286 | out += scnprintf(buf + out, len - out, "Maybe="); |
e5a0334c SM |
287 | out += stringify_nodemap(mle->maybe_map, O2NM_MAX_NODES, |
288 | buf + out, len - out); | |
d293d3af | 289 | out += scnprintf(buf + out, len - out, "\n"); |
e5a0334c | 290 | |
d293d3af | 291 | out += scnprintf(buf + out, len - out, "Vote="); |
e5a0334c SM |
292 | out += stringify_nodemap(mle->vote_map, O2NM_MAX_NODES, |
293 | buf + out, len - out); | |
d293d3af | 294 | out += scnprintf(buf + out, len - out, "\n"); |
e5a0334c | 295 | |
d293d3af | 296 | out += scnprintf(buf + out, len - out, "Response="); |
e5a0334c SM |
297 | out += stringify_nodemap(mle->response_map, O2NM_MAX_NODES, |
298 | buf + out, len - out); | |
d293d3af | 299 | out += scnprintf(buf + out, len - out, "\n"); |
e5a0334c | 300 | |
d293d3af | 301 | out += scnprintf(buf + out, len - out, "Node="); |
e5a0334c SM |
302 | out += stringify_nodemap(mle->node_map, O2NM_MAX_NODES, |
303 | buf + out, len - out); | |
d293d3af | 304 | out += scnprintf(buf + out, len - out, "\n"); |
e5a0334c | 305 | |
d293d3af | 306 | out += scnprintf(buf + out, len - out, "\n"); |
e5a0334c SM |
307 | |
308 | return out; | |
309 | } | |
310 | ||
311 | void dlm_print_one_mle(struct dlm_master_list_entry *mle) | |
312 | { | |
313 | char *buf; | |
314 | ||
99986576 | 315 | buf = (char *) get_zeroed_page(GFP_ATOMIC); |
e5a0334c SM |
316 | if (buf) { |
317 | dump_mle(mle, buf, PAGE_SIZE - 1); | |
318 | free_page((unsigned long)buf); | |
319 | } | |
320 | } | |
321 | ||
322 | #ifdef CONFIG_DEBUG_FS | |
323 | ||
1a5c4e2a | 324 | static struct dentry *dlm_debugfs_root; |
e5a0334c | 325 | |
6325b4a2 | 326 | #define DLM_DEBUGFS_DIR "o2dlm" |
007dce53 | 327 | #define DLM_DEBUGFS_DLM_STATE "dlm_state" |
4e3d24ed | 328 | #define DLM_DEBUGFS_LOCKING_STATE "locking_state" |
d0129ace | 329 | #define DLM_DEBUGFS_MLE_STATE "mle_state" |
7209300a | 330 | #define DLM_DEBUGFS_PURGE_LIST "purge_list" |
007dce53 SM |
331 | |
332 | /* begin - utils funcs */ | |
02bd9c39 | 333 | static int debug_release(struct inode *inode, struct file *file) |
007dce53 | 334 | { |
02bd9c39 SM |
335 | free_page((unsigned long)file->private_data); |
336 | return 0; | |
007dce53 SM |
337 | } |
338 | ||
02bd9c39 SM |
339 | static ssize_t debug_read(struct file *file, char __user *buf, |
340 | size_t nbytes, loff_t *ppos) | |
007dce53 | 341 | { |
02bd9c39 SM |
342 | return simple_read_from_buffer(buf, nbytes, ppos, file->private_data, |
343 | i_size_read(file->f_mapping->host)); | |
007dce53 SM |
344 | } |
345 | /* end - util funcs */ | |
346 | ||
7209300a | 347 | /* begin - purge list funcs */ |
02bd9c39 | 348 | static int debug_purgelist_print(struct dlm_ctxt *dlm, char *buf, int len) |
7209300a SM |
349 | { |
350 | struct dlm_lock_resource *res; | |
351 | int out = 0; | |
352 | unsigned long total = 0; | |
353 | ||
d293d3af | 354 | out += scnprintf(buf + out, len - out, |
7209300a SM |
355 | "Dumping Purgelist for Domain: %s\n", dlm->name); |
356 | ||
357 | spin_lock(&dlm->spinlock); | |
358 | list_for_each_entry(res, &dlm->purge_list, purge) { | |
359 | ++total; | |
02bd9c39 | 360 | if (len - out < 100) |
7209300a SM |
361 | continue; |
362 | spin_lock(&res->spinlock); | |
363 | out += stringify_lockname(res->lockname.name, | |
364 | res->lockname.len, | |
02bd9c39 | 365 | buf + out, len - out); |
d293d3af | 366 | out += scnprintf(buf + out, len - out, "\t%ld\n", |
7209300a SM |
367 | (jiffies - res->last_used)/HZ); |
368 | spin_unlock(&res->spinlock); | |
369 | } | |
370 | spin_unlock(&dlm->spinlock); | |
371 | ||
d293d3af | 372 | out += scnprintf(buf + out, len - out, "Total on list: %lu\n", total); |
7209300a SM |
373 | |
374 | return out; | |
375 | } | |
376 | ||
377 | static int debug_purgelist_open(struct inode *inode, struct file *file) | |
378 | { | |
379 | struct dlm_ctxt *dlm = inode->i_private; | |
02bd9c39 | 380 | char *buf = NULL; |
7209300a | 381 | |
02bd9c39 SM |
382 | buf = (char *) get_zeroed_page(GFP_NOFS); |
383 | if (!buf) | |
7209300a SM |
384 | goto bail; |
385 | ||
02bd9c39 | 386 | i_size_write(inode, debug_purgelist_print(dlm, buf, PAGE_SIZE - 1)); |
7209300a | 387 | |
02bd9c39 | 388 | file->private_data = buf; |
7209300a SM |
389 | |
390 | return 0; | |
391 | bail: | |
392 | return -ENOMEM; | |
393 | } | |
394 | ||
828c0950 | 395 | static const struct file_operations debug_purgelist_fops = { |
7209300a | 396 | .open = debug_purgelist_open, |
02bd9c39 SM |
397 | .release = debug_release, |
398 | .read = debug_read, | |
399 | .llseek = generic_file_llseek, | |
7209300a SM |
400 | }; |
401 | /* end - purge list funcs */ | |
402 | ||
d0129ace | 403 | /* begin - debug mle funcs */ |
02bd9c39 | 404 | static int debug_mle_print(struct dlm_ctxt *dlm, char *buf, int len) |
d0129ace SM |
405 | { |
406 | struct dlm_master_list_entry *mle; | |
2ed6c750 | 407 | struct hlist_head *bucket; |
2ed6c750 | 408 | int i, out = 0; |
93f3b86f | 409 | unsigned long total = 0, longest = 0, bucket_count = 0; |
d0129ace | 410 | |
d293d3af | 411 | out += scnprintf(buf + out, len - out, |
d0129ace SM |
412 | "Dumping MLEs for Domain: %s\n", dlm->name); |
413 | ||
414 | spin_lock(&dlm->master_lock); | |
2ed6c750 SM |
415 | for (i = 0; i < DLM_HASH_BUCKETS; i++) { |
416 | bucket = dlm_master_hash(dlm, i); | |
df53cd3b | 417 | hlist_for_each_entry(mle, bucket, master_hash_node) { |
2ed6c750 | 418 | ++total; |
93f3b86f | 419 | ++bucket_count; |
02bd9c39 | 420 | if (len - out < 200) |
2ed6c750 | 421 | continue; |
02bd9c39 | 422 | out += dump_mle(mle, buf + out, len - out); |
2ed6c750 | 423 | } |
93f3b86f JB |
424 | longest = max(longest, bucket_count); |
425 | bucket_count = 0; | |
d0129ace SM |
426 | } |
427 | spin_unlock(&dlm->master_lock); | |
428 | ||
d293d3af | 429 | out += scnprintf(buf + out, len - out, |
79c83ea1 | 430 | "Total: %lu, Longest: %lu\n", total, longest); |
d0129ace SM |
431 | return out; |
432 | } | |
433 | ||
434 | static int debug_mle_open(struct inode *inode, struct file *file) | |
435 | { | |
436 | struct dlm_ctxt *dlm = inode->i_private; | |
02bd9c39 | 437 | char *buf = NULL; |
d0129ace | 438 | |
02bd9c39 SM |
439 | buf = (char *) get_zeroed_page(GFP_NOFS); |
440 | if (!buf) | |
d0129ace SM |
441 | goto bail; |
442 | ||
02bd9c39 | 443 | i_size_write(inode, debug_mle_print(dlm, buf, PAGE_SIZE - 1)); |
d0129ace | 444 | |
02bd9c39 | 445 | file->private_data = buf; |
d0129ace SM |
446 | |
447 | return 0; | |
448 | bail: | |
449 | return -ENOMEM; | |
450 | } | |
451 | ||
828c0950 | 452 | static const struct file_operations debug_mle_fops = { |
d0129ace | 453 | .open = debug_mle_open, |
02bd9c39 SM |
454 | .release = debug_release, |
455 | .read = debug_read, | |
456 | .llseek = generic_file_llseek, | |
d0129ace SM |
457 | }; |
458 | ||
459 | /* end - debug mle funcs */ | |
460 | ||
4e3d24ed SM |
461 | /* begin - debug lockres funcs */ |
462 | static int dump_lock(struct dlm_lock *lock, int list_type, char *buf, int len) | |
463 | { | |
464 | int out; | |
465 | ||
466 | #define DEBUG_LOCK_VERSION 1 | |
467 | spin_lock(&lock->spinlock); | |
d293d3af | 468 | out = scnprintf(buf, len, "LOCK:%d,%d,%d,%d,%d,%d:%lld,%d,%d,%d,%d,%d," |
4e3d24ed SM |
469 | "%d,%d,%d,%d\n", |
470 | DEBUG_LOCK_VERSION, | |
471 | list_type, lock->ml.type, lock->ml.convert_type, | |
472 | lock->ml.node, | |
473 | dlm_get_lock_cookie_node(be64_to_cpu(lock->ml.cookie)), | |
474 | dlm_get_lock_cookie_seq(be64_to_cpu(lock->ml.cookie)), | |
475 | !list_empty(&lock->ast_list), | |
476 | !list_empty(&lock->bast_list), | |
477 | lock->ast_pending, lock->bast_pending, | |
478 | lock->convert_pending, lock->lock_pending, | |
479 | lock->cancel_pending, lock->unlock_pending, | |
2c935bc5 | 480 | kref_read(&lock->lock_refs)); |
4e3d24ed SM |
481 | spin_unlock(&lock->spinlock); |
482 | ||
483 | return out; | |
484 | } | |
485 | ||
486 | static int dump_lockres(struct dlm_lock_resource *res, char *buf, int len) | |
487 | { | |
488 | struct dlm_lock *lock; | |
489 | int i; | |
490 | int out = 0; | |
491 | ||
d293d3af | 492 | out += scnprintf(buf + out, len - out, "NAME:"); |
4e3d24ed SM |
493 | out += stringify_lockname(res->lockname.name, res->lockname.len, |
494 | buf + out, len - out); | |
d293d3af | 495 | out += scnprintf(buf + out, len - out, "\n"); |
4e3d24ed SM |
496 | |
497 | #define DEBUG_LRES_VERSION 1 | |
d293d3af | 498 | out += scnprintf(buf + out, len - out, |
4e3d24ed SM |
499 | "LRES:%d,%d,%d,%ld,%d,%d,%d,%d,%d,%d,%d\n", |
500 | DEBUG_LRES_VERSION, | |
501 | res->owner, res->state, res->last_used, | |
502 | !list_empty(&res->purge), | |
503 | !list_empty(&res->dirty), | |
504 | !list_empty(&res->recovering), | |
505 | res->inflight_locks, res->migration_pending, | |
506 | atomic_read(&res->asts_reserved), | |
2c935bc5 | 507 | kref_read(&res->refs)); |
4e3d24ed SM |
508 | |
509 | /* refmap */ | |
d293d3af | 510 | out += scnprintf(buf + out, len - out, "RMAP:"); |
4e3d24ed SM |
511 | out += stringify_nodemap(res->refmap, O2NM_MAX_NODES, |
512 | buf + out, len - out); | |
d293d3af | 513 | out += scnprintf(buf + out, len - out, "\n"); |
4e3d24ed SM |
514 | |
515 | /* lvb */ | |
d293d3af | 516 | out += scnprintf(buf + out, len - out, "LVBX:"); |
4e3d24ed | 517 | for (i = 0; i < DLM_LVB_LEN; i++) |
d293d3af | 518 | out += scnprintf(buf + out, len - out, |
4e3d24ed | 519 | "%02x", (unsigned char)res->lvb[i]); |
d293d3af | 520 | out += scnprintf(buf + out, len - out, "\n"); |
4e3d24ed SM |
521 | |
522 | /* granted */ | |
523 | list_for_each_entry(lock, &res->granted, list) | |
524 | out += dump_lock(lock, 0, buf + out, len - out); | |
525 | ||
526 | /* converting */ | |
527 | list_for_each_entry(lock, &res->converting, list) | |
528 | out += dump_lock(lock, 1, buf + out, len - out); | |
529 | ||
530 | /* blocked */ | |
531 | list_for_each_entry(lock, &res->blocked, list) | |
532 | out += dump_lock(lock, 2, buf + out, len - out); | |
533 | ||
d293d3af | 534 | out += scnprintf(buf + out, len - out, "\n"); |
4e3d24ed SM |
535 | |
536 | return out; | |
537 | } | |
538 | ||
539 | static void *lockres_seq_start(struct seq_file *m, loff_t *pos) | |
540 | { | |
541 | struct debug_lockres *dl = m->private; | |
542 | struct dlm_ctxt *dlm = dl->dl_ctxt; | |
b0d4f817 | 543 | struct dlm_lock_resource *oldres = dl->dl_res; |
b02da32b | 544 | struct dlm_lock_resource *res = NULL, *iter; |
b0d4f817 | 545 | struct list_head *track_list; |
4e3d24ed | 546 | |
b0d4f817 SM |
547 | spin_lock(&dlm->track_lock); |
548 | if (oldres) | |
549 | track_list = &oldres->tracking; | |
228ac635 | 550 | else { |
b0d4f817 | 551 | track_list = &dlm->tracking_list; |
228ac635 TY |
552 | if (list_empty(track_list)) { |
553 | dl = NULL; | |
554 | spin_unlock(&dlm->track_lock); | |
555 | goto bail; | |
556 | } | |
557 | } | |
4e3d24ed | 558 | |
b02da32b JK |
559 | list_for_each_entry(iter, track_list, tracking) { |
560 | if (&iter->tracking != &dlm->tracking_list) { | |
561 | dlm_lockres_get(iter); | |
562 | res = iter; | |
563 | } | |
b0d4f817 | 564 | break; |
4e3d24ed | 565 | } |
b0d4f817 | 566 | spin_unlock(&dlm->track_lock); |
4e3d24ed | 567 | |
b0d4f817 SM |
568 | if (oldres) |
569 | dlm_lockres_put(oldres); | |
4e3d24ed | 570 | |
b0d4f817 SM |
571 | dl->dl_res = res; |
572 | ||
573 | if (res) { | |
574 | spin_lock(&res->spinlock); | |
575 | dump_lockres(res, dl->dl_buf, dl->dl_len - 1); | |
576 | spin_unlock(&res->spinlock); | |
577 | } else | |
578 | dl = NULL; | |
4e3d24ed | 579 | |
228ac635 | 580 | bail: |
b0d4f817 | 581 | /* passed to seq_show */ |
4e3d24ed SM |
582 | return dl; |
583 | } | |
584 | ||
585 | static void lockres_seq_stop(struct seq_file *m, void *v) | |
586 | { | |
587 | } | |
588 | ||
589 | static void *lockres_seq_next(struct seq_file *m, void *v, loff_t *pos) | |
590 | { | |
591 | return NULL; | |
592 | } | |
593 | ||
594 | static int lockres_seq_show(struct seq_file *s, void *v) | |
595 | { | |
596 | struct debug_lockres *dl = (struct debug_lockres *)v; | |
597 | ||
598 | seq_printf(s, "%s", dl->dl_buf); | |
599 | ||
600 | return 0; | |
601 | } | |
602 | ||
88e9d34c | 603 | static const struct seq_operations debug_lockres_ops = { |
4e3d24ed SM |
604 | .start = lockres_seq_start, |
605 | .stop = lockres_seq_stop, | |
606 | .next = lockres_seq_next, | |
607 | .show = lockres_seq_show, | |
608 | }; | |
609 | ||
610 | static int debug_lockres_open(struct inode *inode, struct file *file) | |
611 | { | |
612 | struct dlm_ctxt *dlm = inode->i_private; | |
8f9ac032 RJ |
613 | struct debug_lockres *dl; |
614 | void *buf; | |
4e3d24ed | 615 | |
8f9ac032 RJ |
616 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); |
617 | if (!buf) | |
4e3d24ed | 618 | goto bail; |
4e3d24ed | 619 | |
8f9ac032 RJ |
620 | dl = __seq_open_private(file, &debug_lockres_ops, sizeof(*dl)); |
621 | if (!dl) | |
622 | goto bailfree; | |
4e3d24ed | 623 | |
8f9ac032 RJ |
624 | dl->dl_len = PAGE_SIZE; |
625 | dl->dl_buf = buf; | |
4e3d24ed SM |
626 | |
627 | dlm_grab(dlm); | |
628 | dl->dl_ctxt = dlm; | |
629 | ||
630 | return 0; | |
8f9ac032 RJ |
631 | |
632 | bailfree: | |
633 | kfree(buf); | |
4e3d24ed | 634 | bail: |
8f9ac032 RJ |
635 | mlog_errno(-ENOMEM); |
636 | return -ENOMEM; | |
4e3d24ed SM |
637 | } |
638 | ||
639 | static int debug_lockres_release(struct inode *inode, struct file *file) | |
640 | { | |
33fa1d90 | 641 | struct seq_file *seq = file->private_data; |
4e3d24ed SM |
642 | struct debug_lockres *dl = (struct debug_lockres *)seq->private; |
643 | ||
644 | if (dl->dl_res) | |
645 | dlm_lockres_put(dl->dl_res); | |
646 | dlm_put(dl->dl_ctxt); | |
647 | kfree(dl->dl_buf); | |
648 | return seq_release_private(inode, file); | |
649 | } | |
650 | ||
828c0950 | 651 | static const struct file_operations debug_lockres_fops = { |
4e3d24ed SM |
652 | .open = debug_lockres_open, |
653 | .release = debug_lockres_release, | |
654 | .read = seq_read, | |
655 | .llseek = seq_lseek, | |
656 | }; | |
657 | /* end - debug lockres funcs */ | |
658 | ||
007dce53 | 659 | /* begin - debug state funcs */ |
02bd9c39 | 660 | static int debug_state_print(struct dlm_ctxt *dlm, char *buf, int len) |
007dce53 SM |
661 | { |
662 | int out = 0; | |
663 | struct dlm_reco_node_data *node; | |
664 | char *state; | |
e64ff146 SM |
665 | int cur_mles = 0, tot_mles = 0; |
666 | int i; | |
007dce53 SM |
667 | |
668 | spin_lock(&dlm->spinlock); | |
669 | ||
670 | switch (dlm->dlm_state) { | |
671 | case DLM_CTXT_NEW: | |
672 | state = "NEW"; break; | |
673 | case DLM_CTXT_JOINED: | |
674 | state = "JOINED"; break; | |
675 | case DLM_CTXT_IN_SHUTDOWN: | |
676 | state = "SHUTDOWN"; break; | |
677 | case DLM_CTXT_LEAVING: | |
678 | state = "LEAVING"; break; | |
679 | default: | |
680 | state = "UNKNOWN"; break; | |
681 | } | |
682 | ||
683 | /* Domain: xxxxxxxxxx Key: 0xdfbac769 */ | |
d293d3af | 684 | out += scnprintf(buf + out, len - out, |
b1365d0b SM |
685 | "Domain: %s Key: 0x%08x Protocol: %d.%d\n", |
686 | dlm->name, dlm->key, dlm->dlm_locking_proto.pv_major, | |
687 | dlm->dlm_locking_proto.pv_minor); | |
007dce53 SM |
688 | |
689 | /* Thread Pid: xxx Node: xxx State: xxxxx */ | |
d293d3af | 690 | out += scnprintf(buf + out, len - out, |
007dce53 | 691 | "Thread Pid: %d Node: %d State: %s\n", |
37096a79 | 692 | task_pid_nr(dlm->dlm_thread_task), dlm->node_num, state); |
007dce53 SM |
693 | |
694 | /* Number of Joins: xxx Joining Node: xxx */ | |
d293d3af | 695 | out += scnprintf(buf + out, len - out, |
007dce53 SM |
696 | "Number of Joins: %d Joining Node: %d\n", |
697 | dlm->num_joins, dlm->joining_node); | |
698 | ||
699 | /* Domain Map: xx xx xx */ | |
d293d3af | 700 | out += scnprintf(buf + out, len - out, "Domain Map: "); |
007dce53 | 701 | out += stringify_nodemap(dlm->domain_map, O2NM_MAX_NODES, |
02bd9c39 | 702 | buf + out, len - out); |
d293d3af | 703 | out += scnprintf(buf + out, len - out, "\n"); |
007dce53 | 704 | |
bddefdee | 705 | /* Exit Domain Map: xx xx xx */ |
d293d3af | 706 | out += scnprintf(buf + out, len - out, "Exit Domain Map: "); |
bddefdee SM |
707 | out += stringify_nodemap(dlm->exit_domain_map, O2NM_MAX_NODES, |
708 | buf + out, len - out); | |
d293d3af | 709 | out += scnprintf(buf + out, len - out, "\n"); |
bddefdee | 710 | |
007dce53 | 711 | /* Live Map: xx xx xx */ |
d293d3af | 712 | out += scnprintf(buf + out, len - out, "Live Map: "); |
007dce53 | 713 | out += stringify_nodemap(dlm->live_nodes_map, O2NM_MAX_NODES, |
02bd9c39 | 714 | buf + out, len - out); |
d293d3af | 715 | out += scnprintf(buf + out, len - out, "\n"); |
007dce53 | 716 | |
e64ff146 | 717 | /* Lock Resources: xxx (xxx) */ |
d293d3af | 718 | out += scnprintf(buf + out, len - out, |
e64ff146 SM |
719 | "Lock Resources: %d (%d)\n", |
720 | atomic_read(&dlm->res_cur_count), | |
721 | atomic_read(&dlm->res_tot_count)); | |
722 | ||
723 | for (i = 0; i < DLM_MLE_NUM_TYPES; ++i) | |
724 | tot_mles += atomic_read(&dlm->mle_tot_count[i]); | |
725 | ||
726 | for (i = 0; i < DLM_MLE_NUM_TYPES; ++i) | |
727 | cur_mles += atomic_read(&dlm->mle_cur_count[i]); | |
728 | ||
729 | /* MLEs: xxx (xxx) */ | |
d293d3af | 730 | out += scnprintf(buf + out, len - out, |
e64ff146 SM |
731 | "MLEs: %d (%d)\n", cur_mles, tot_mles); |
732 | ||
733 | /* Blocking: xxx (xxx) */ | |
d293d3af | 734 | out += scnprintf(buf + out, len - out, |
e64ff146 SM |
735 | " Blocking: %d (%d)\n", |
736 | atomic_read(&dlm->mle_cur_count[DLM_MLE_BLOCK]), | |
737 | atomic_read(&dlm->mle_tot_count[DLM_MLE_BLOCK])); | |
738 | ||
739 | /* Mastery: xxx (xxx) */ | |
d293d3af | 740 | out += scnprintf(buf + out, len - out, |
e64ff146 SM |
741 | " Mastery: %d (%d)\n", |
742 | atomic_read(&dlm->mle_cur_count[DLM_MLE_MASTER]), | |
743 | atomic_read(&dlm->mle_tot_count[DLM_MLE_MASTER])); | |
744 | ||
745 | /* Migration: xxx (xxx) */ | |
d293d3af | 746 | out += scnprintf(buf + out, len - out, |
e64ff146 SM |
747 | " Migration: %d (%d)\n", |
748 | atomic_read(&dlm->mle_cur_count[DLM_MLE_MIGRATION]), | |
749 | atomic_read(&dlm->mle_tot_count[DLM_MLE_MIGRATION])); | |
750 | ||
007dce53 | 751 | /* Lists: Dirty=Empty Purge=InUse PendingASTs=Empty ... */ |
d293d3af | 752 | out += scnprintf(buf + out, len - out, |
007dce53 | 753 | "Lists: Dirty=%s Purge=%s PendingASTs=%s " |
2ed6c750 | 754 | "PendingBASTs=%s\n", |
007dce53 SM |
755 | (list_empty(&dlm->dirty_list) ? "Empty" : "InUse"), |
756 | (list_empty(&dlm->purge_list) ? "Empty" : "InUse"), | |
757 | (list_empty(&dlm->pending_asts) ? "Empty" : "InUse"), | |
2ed6c750 | 758 | (list_empty(&dlm->pending_basts) ? "Empty" : "InUse")); |
007dce53 SM |
759 | |
760 | /* Purge Count: xxx Refs: xxx */ | |
d293d3af | 761 | out += scnprintf(buf + out, len - out, |
007dce53 | 762 | "Purge Count: %d Refs: %d\n", dlm->purge_count, |
2c935bc5 | 763 | kref_read(&dlm->dlm_refs)); |
007dce53 SM |
764 | |
765 | /* Dead Node: xxx */ | |
d293d3af | 766 | out += scnprintf(buf + out, len - out, |
007dce53 SM |
767 | "Dead Node: %d\n", dlm->reco.dead_node); |
768 | ||
769 | /* What about DLM_RECO_STATE_FINALIZE? */ | |
770 | if (dlm->reco.state == DLM_RECO_STATE_ACTIVE) | |
771 | state = "ACTIVE"; | |
772 | else | |
773 | state = "INACTIVE"; | |
774 | ||
775 | /* Recovery Pid: xxxx Master: xxx State: xxxx */ | |
d293d3af | 776 | out += scnprintf(buf + out, len - out, |
007dce53 | 777 | "Recovery Pid: %d Master: %d State: %s\n", |
37096a79 | 778 | task_pid_nr(dlm->dlm_reco_thread_task), |
007dce53 SM |
779 | dlm->reco.new_master, state); |
780 | ||
781 | /* Recovery Map: xx xx */ | |
d293d3af | 782 | out += scnprintf(buf + out, len - out, "Recovery Map: "); |
007dce53 | 783 | out += stringify_nodemap(dlm->recovery_map, O2NM_MAX_NODES, |
02bd9c39 | 784 | buf + out, len - out); |
d293d3af | 785 | out += scnprintf(buf + out, len - out, "\n"); |
007dce53 SM |
786 | |
787 | /* Recovery Node State: */ | |
d293d3af | 788 | out += scnprintf(buf + out, len - out, "Recovery Node State:\n"); |
007dce53 SM |
789 | list_for_each_entry(node, &dlm->reco.node_data, list) { |
790 | switch (node->state) { | |
791 | case DLM_RECO_NODE_DATA_INIT: | |
792 | state = "INIT"; | |
793 | break; | |
794 | case DLM_RECO_NODE_DATA_REQUESTING: | |
795 | state = "REQUESTING"; | |
796 | break; | |
797 | case DLM_RECO_NODE_DATA_DEAD: | |
798 | state = "DEAD"; | |
799 | break; | |
800 | case DLM_RECO_NODE_DATA_RECEIVING: | |
801 | state = "RECEIVING"; | |
802 | break; | |
803 | case DLM_RECO_NODE_DATA_REQUESTED: | |
804 | state = "REQUESTED"; | |
805 | break; | |
806 | case DLM_RECO_NODE_DATA_DONE: | |
807 | state = "DONE"; | |
808 | break; | |
809 | case DLM_RECO_NODE_DATA_FINALIZE_SENT: | |
810 | state = "FINALIZE-SENT"; | |
811 | break; | |
812 | default: | |
813 | state = "BAD"; | |
814 | break; | |
815 | } | |
d293d3af | 816 | out += scnprintf(buf + out, len - out, "\t%u - %s\n", |
007dce53 SM |
817 | node->node_num, state); |
818 | } | |
819 | ||
820 | spin_unlock(&dlm->spinlock); | |
821 | ||
822 | return out; | |
823 | } | |
824 | ||
825 | static int debug_state_open(struct inode *inode, struct file *file) | |
826 | { | |
827 | struct dlm_ctxt *dlm = inode->i_private; | |
02bd9c39 | 828 | char *buf = NULL; |
007dce53 | 829 | |
02bd9c39 SM |
830 | buf = (char *) get_zeroed_page(GFP_NOFS); |
831 | if (!buf) | |
007dce53 SM |
832 | goto bail; |
833 | ||
02bd9c39 | 834 | i_size_write(inode, debug_state_print(dlm, buf, PAGE_SIZE - 1)); |
007dce53 | 835 | |
02bd9c39 | 836 | file->private_data = buf; |
007dce53 SM |
837 | |
838 | return 0; | |
839 | bail: | |
840 | return -ENOMEM; | |
841 | } | |
842 | ||
828c0950 | 843 | static const struct file_operations debug_state_fops = { |
007dce53 | 844 | .open = debug_state_open, |
02bd9c39 SM |
845 | .release = debug_release, |
846 | .read = debug_read, | |
847 | .llseek = generic_file_llseek, | |
007dce53 SM |
848 | }; |
849 | /* end - debug state funcs */ | |
850 | ||
851 | /* files in subroot */ | |
e581595e | 852 | void dlm_debug_init(struct dlm_ctxt *dlm) |
007dce53 | 853 | { |
007dce53 | 854 | /* for dumping dlm_ctxt */ |
5e7a3ed9 GKH |
855 | debugfs_create_file(DLM_DEBUGFS_DLM_STATE, S_IFREG|S_IRUSR, |
856 | dlm->dlm_debugfs_subroot, dlm, &debug_state_fops); | |
007dce53 | 857 | |
4e3d24ed | 858 | /* for dumping lockres */ |
5e7a3ed9 GKH |
859 | debugfs_create_file(DLM_DEBUGFS_LOCKING_STATE, S_IFREG|S_IRUSR, |
860 | dlm->dlm_debugfs_subroot, dlm, &debug_lockres_fops); | |
4e3d24ed | 861 | |
d0129ace | 862 | /* for dumping mles */ |
5e7a3ed9 GKH |
863 | debugfs_create_file(DLM_DEBUGFS_MLE_STATE, S_IFREG|S_IRUSR, |
864 | dlm->dlm_debugfs_subroot, dlm, &debug_mle_fops); | |
d0129ace | 865 | |
7209300a | 866 | /* for dumping lockres on the purge list */ |
5e7a3ed9 GKH |
867 | debugfs_create_file(DLM_DEBUGFS_PURGE_LIST, S_IFREG|S_IRUSR, |
868 | dlm->dlm_debugfs_subroot, dlm, | |
869 | &debug_purgelist_fops); | |
007dce53 | 870 | } |
6325b4a2 SM |
871 | |
872 | /* subroot - domain dir */ | |
5e7a3ed9 | 873 | void dlm_create_debugfs_subroot(struct dlm_ctxt *dlm) |
6325b4a2 | 874 | { |
e581595e GKH |
875 | dlm->dlm_debugfs_subroot = debugfs_create_dir(dlm->name, |
876 | dlm_debugfs_root); | |
6325b4a2 SM |
877 | } |
878 | ||
879 | void dlm_destroy_debugfs_subroot(struct dlm_ctxt *dlm) | |
880 | { | |
5e7a3ed9 | 881 | debugfs_remove_recursive(dlm->dlm_debugfs_subroot); |
6325b4a2 SM |
882 | } |
883 | ||
884 | /* debugfs root */ | |
e581595e | 885 | void dlm_create_debugfs_root(void) |
6325b4a2 SM |
886 | { |
887 | dlm_debugfs_root = debugfs_create_dir(DLM_DEBUGFS_DIR, NULL); | |
6325b4a2 SM |
888 | } |
889 | ||
890 | void dlm_destroy_debugfs_root(void) | |
891 | { | |
37096a79 | 892 | debugfs_remove(dlm_debugfs_root); |
6325b4a2 SM |
893 | } |
894 | #endif /* CONFIG_DEBUG_FS */ |