Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * arch/s390/kernel/debug.c | |
3 | * S/390 debug facility | |
4 | * | |
5 | * Copyright (C) 1999, 2000 IBM Deutschland Entwicklung GmbH, | |
6 | * IBM Corporation | |
7 | * Author(s): Michael Holzheu (holzheu@de.ibm.com), | |
8 | * Holger Smolinski (Holger.Smolinski@de.ibm.com) | |
9 | * | |
10 | * Bugreports to: <Linux390@de.ibm.com> | |
11 | */ | |
12 | ||
13 | #include <linux/config.h> | |
14 | #include <linux/stddef.h> | |
15 | #include <linux/kernel.h> | |
16 | #include <linux/errno.h> | |
17 | #include <linux/slab.h> | |
18 | #include <linux/ctype.h> | |
19 | #include <linux/sysctl.h> | |
20 | #include <asm/uaccess.h> | |
21 | #include <asm/semaphore.h> | |
22 | ||
23 | #include <linux/module.h> | |
24 | #include <linux/init.h> | |
25 | ||
26 | #include <asm/debug.h> | |
27 | ||
28 | #define DEBUG_PROLOG_ENTRY -1 | |
29 | ||
30 | /* typedefs */ | |
31 | ||
32 | typedef struct file_private_info { | |
33 | loff_t offset; /* offset of last read in file */ | |
34 | int act_area; /* number of last formated area */ | |
35 | int act_entry; /* last formated entry (offset */ | |
36 | /* relative to beginning of last */ | |
37 | /* formated area) */ | |
38 | size_t act_entry_offset; /* up to this offset we copied */ | |
39 | /* in last read the last formated */ | |
40 | /* entry to userland */ | |
41 | char temp_buf[2048]; /* buffer for output */ | |
42 | debug_info_t *debug_info_org; /* original debug information */ | |
43 | debug_info_t *debug_info_snap; /* snapshot of debug information */ | |
44 | struct debug_view *view; /* used view of debug info */ | |
45 | } file_private_info_t; | |
46 | ||
47 | typedef struct | |
48 | { | |
49 | char *string; | |
50 | /* | |
51 | * This assumes that all args are converted into longs | |
52 | * on L/390 this is the case for all types of parameter | |
53 | * except of floats, and long long (32 bit) | |
54 | * | |
55 | */ | |
56 | long args[0]; | |
57 | } debug_sprintf_entry_t; | |
58 | ||
59 | ||
60 | extern void tod_to_timeval(uint64_t todval, struct timeval *xtime); | |
61 | ||
62 | /* internal function prototyes */ | |
63 | ||
64 | static int debug_init(void); | |
65 | static ssize_t debug_output(struct file *file, char __user *user_buf, | |
66 | size_t user_len, loff_t * offset); | |
67 | static ssize_t debug_input(struct file *file, const char __user *user_buf, | |
68 | size_t user_len, loff_t * offset); | |
69 | static int debug_open(struct inode *inode, struct file *file); | |
70 | static int debug_close(struct inode *inode, struct file *file); | |
71 | static debug_info_t* debug_info_create(char *name, int page_order, int nr_areas, int buf_size); | |
72 | static void debug_info_get(debug_info_t *); | |
73 | static void debug_info_put(debug_info_t *); | |
74 | static int debug_prolog_level_fn(debug_info_t * id, | |
75 | struct debug_view *view, char *out_buf); | |
76 | static int debug_input_level_fn(debug_info_t * id, struct debug_view *view, | |
77 | struct file *file, const char __user *user_buf, | |
78 | size_t user_buf_size, loff_t * offset); | |
79 | static int debug_input_flush_fn(debug_info_t * id, struct debug_view *view, | |
80 | struct file *file, const char __user *user_buf, | |
81 | size_t user_buf_size, loff_t * offset); | |
82 | static int debug_hex_ascii_format_fn(debug_info_t * id, struct debug_view *view, | |
83 | char *out_buf, const char *in_buf); | |
84 | static int debug_raw_format_fn(debug_info_t * id, | |
85 | struct debug_view *view, char *out_buf, | |
86 | const char *in_buf); | |
87 | static int debug_raw_header_fn(debug_info_t * id, struct debug_view *view, | |
88 | int area, debug_entry_t * entry, char *out_buf); | |
89 | ||
90 | static int debug_sprintf_format_fn(debug_info_t * id, struct debug_view *view, | |
91 | char *out_buf, debug_sprintf_entry_t *curr_event); | |
92 | ||
93 | /* globals */ | |
94 | ||
95 | struct debug_view debug_raw_view = { | |
96 | "raw", | |
97 | NULL, | |
98 | &debug_raw_header_fn, | |
99 | &debug_raw_format_fn, | |
100 | NULL, | |
101 | NULL | |
102 | }; | |
103 | ||
104 | struct debug_view debug_hex_ascii_view = { | |
105 | "hex_ascii", | |
106 | NULL, | |
107 | &debug_dflt_header_fn, | |
108 | &debug_hex_ascii_format_fn, | |
109 | NULL, | |
110 | NULL | |
111 | }; | |
112 | ||
113 | struct debug_view debug_level_view = { | |
114 | "level", | |
115 | &debug_prolog_level_fn, | |
116 | NULL, | |
117 | NULL, | |
118 | &debug_input_level_fn, | |
119 | NULL | |
120 | }; | |
121 | ||
122 | struct debug_view debug_flush_view = { | |
123 | "flush", | |
124 | NULL, | |
125 | NULL, | |
126 | NULL, | |
127 | &debug_input_flush_fn, | |
128 | NULL | |
129 | }; | |
130 | ||
131 | struct debug_view debug_sprintf_view = { | |
132 | "sprintf", | |
133 | NULL, | |
134 | &debug_dflt_header_fn, | |
135 | (debug_format_proc_t*)&debug_sprintf_format_fn, | |
136 | NULL, | |
137 | NULL | |
138 | }; | |
139 | ||
140 | ||
141 | unsigned int debug_feature_version = __DEBUG_FEATURE_VERSION; | |
142 | ||
143 | /* static globals */ | |
144 | ||
145 | static debug_info_t *debug_area_first = NULL; | |
146 | static debug_info_t *debug_area_last = NULL; | |
147 | DECLARE_MUTEX(debug_lock); | |
148 | ||
149 | static int initialized; | |
150 | ||
151 | static struct file_operations debug_file_ops = { | |
152 | .owner = THIS_MODULE, | |
153 | .read = debug_output, | |
154 | .write = debug_input, | |
155 | .open = debug_open, | |
156 | .release = debug_close, | |
157 | }; | |
158 | ||
159 | static struct proc_dir_entry *debug_proc_root_entry; | |
160 | ||
161 | /* functions */ | |
162 | ||
163 | /* | |
164 | * debug_info_alloc | |
165 | * - alloc new debug-info | |
166 | */ | |
167 | ||
168 | static debug_info_t* debug_info_alloc(char *name, int page_order, | |
169 | int nr_areas, int buf_size) | |
170 | { | |
171 | debug_info_t* rc; | |
172 | int i; | |
173 | ||
174 | /* alloc everything */ | |
175 | ||
176 | rc = (debug_info_t*) kmalloc(sizeof(debug_info_t), GFP_ATOMIC); | |
177 | if(!rc) | |
178 | goto fail_malloc_rc; | |
179 | rc->active_entry = (int*)kmalloc(nr_areas * sizeof(int), GFP_ATOMIC); | |
180 | if(!rc->active_entry) | |
181 | goto fail_malloc_active_entry; | |
182 | memset(rc->active_entry, 0, nr_areas * sizeof(int)); | |
183 | rc->areas = (debug_entry_t **) kmalloc(nr_areas * | |
184 | sizeof(debug_entry_t *), | |
185 | GFP_ATOMIC); | |
186 | if (!rc->areas) | |
187 | goto fail_malloc_areas; | |
188 | for (i = 0; i < nr_areas; i++) { | |
189 | rc->areas[i] = (debug_entry_t *) __get_free_pages(GFP_ATOMIC, | |
190 | page_order); | |
191 | if (!rc->areas[i]) { | |
192 | for (i--; i >= 0; i--) { | |
193 | free_pages((unsigned long) rc->areas[i], | |
194 | page_order); | |
195 | } | |
196 | goto fail_malloc_areas2; | |
197 | } else { | |
198 | memset(rc->areas[i], 0, PAGE_SIZE << page_order); | |
199 | } | |
200 | } | |
201 | ||
202 | /* initialize members */ | |
203 | ||
204 | spin_lock_init(&rc->lock); | |
205 | rc->page_order = page_order; | |
206 | rc->nr_areas = nr_areas; | |
207 | rc->active_area = 0; | |
208 | rc->level = DEBUG_DEFAULT_LEVEL; | |
209 | rc->buf_size = buf_size; | |
210 | rc->entry_size = sizeof(debug_entry_t) + buf_size; | |
211 | strlcpy(rc->name, name, sizeof(rc->name)); | |
212 | memset(rc->views, 0, DEBUG_MAX_VIEWS * sizeof(struct debug_view *)); | |
213 | #ifdef CONFIG_PROC_FS | |
214 | memset(rc->proc_entries, 0 ,DEBUG_MAX_VIEWS * | |
215 | sizeof(struct proc_dir_entry*)); | |
216 | #endif /* CONFIG_PROC_FS */ | |
217 | atomic_set(&(rc->ref_count), 0); | |
218 | ||
219 | return rc; | |
220 | ||
221 | fail_malloc_areas2: | |
222 | kfree(rc->areas); | |
223 | fail_malloc_areas: | |
224 | kfree(rc->active_entry); | |
225 | fail_malloc_active_entry: | |
226 | kfree(rc); | |
227 | fail_malloc_rc: | |
228 | return NULL; | |
229 | } | |
230 | ||
231 | /* | |
232 | * debug_info_free | |
233 | * - free memory debug-info | |
234 | */ | |
235 | ||
236 | static void debug_info_free(debug_info_t* db_info){ | |
237 | int i; | |
238 | for (i = 0; i < db_info->nr_areas; i++) { | |
239 | free_pages((unsigned long) db_info->areas[i], | |
240 | db_info->page_order); | |
241 | } | |
242 | kfree(db_info->areas); | |
243 | kfree(db_info->active_entry); | |
244 | kfree(db_info); | |
245 | } | |
246 | ||
247 | /* | |
248 | * debug_info_create | |
249 | * - create new debug-info | |
250 | */ | |
251 | ||
252 | static debug_info_t* debug_info_create(char *name, int page_order, | |
253 | int nr_areas, int buf_size) | |
254 | { | |
255 | debug_info_t* rc; | |
256 | ||
257 | rc = debug_info_alloc(name, page_order, nr_areas, buf_size); | |
258 | if(!rc) | |
259 | goto out; | |
260 | ||
261 | ||
262 | /* create proc rood directory */ | |
263 | rc->proc_root_entry = proc_mkdir(rc->name, debug_proc_root_entry); | |
264 | ||
265 | /* append new element to linked list */ | |
266 | if (debug_area_first == NULL) { | |
267 | /* first element in list */ | |
268 | debug_area_first = rc; | |
269 | rc->prev = NULL; | |
270 | } else { | |
271 | /* append element to end of list */ | |
272 | debug_area_last->next = rc; | |
273 | rc->prev = debug_area_last; | |
274 | } | |
275 | debug_area_last = rc; | |
276 | rc->next = NULL; | |
277 | ||
278 | debug_info_get(rc); | |
279 | out: | |
280 | return rc; | |
281 | } | |
282 | ||
283 | /* | |
284 | * debug_info_copy | |
285 | * - copy debug-info | |
286 | */ | |
287 | ||
288 | static debug_info_t* debug_info_copy(debug_info_t* in) | |
289 | { | |
290 | int i; | |
291 | debug_info_t* rc; | |
292 | rc = debug_info_alloc(in->name, in->page_order, | |
293 | in->nr_areas, in->buf_size); | |
294 | if(!rc) | |
295 | goto out; | |
296 | ||
297 | for(i = 0; i < in->nr_areas; i++){ | |
298 | memcpy(rc->areas[i],in->areas[i], PAGE_SIZE << in->page_order); | |
299 | } | |
300 | out: | |
301 | return rc; | |
302 | } | |
303 | ||
304 | /* | |
305 | * debug_info_get | |
306 | * - increments reference count for debug-info | |
307 | */ | |
308 | ||
309 | static void debug_info_get(debug_info_t * db_info) | |
310 | { | |
311 | if (db_info) | |
312 | atomic_inc(&db_info->ref_count); | |
313 | } | |
314 | ||
315 | /* | |
316 | * debug_info_put: | |
317 | * - decreases reference count for debug-info and frees it if necessary | |
318 | */ | |
319 | ||
320 | static void debug_info_put(debug_info_t *db_info) | |
321 | { | |
322 | int i; | |
323 | ||
324 | if (!db_info) | |
325 | return; | |
326 | if (atomic_dec_and_test(&db_info->ref_count)) { | |
327 | #ifdef DEBUG | |
328 | printk(KERN_INFO "debug: freeing debug area %p (%s)\n", | |
329 | db_info, db_info->name); | |
330 | #endif | |
331 | for (i = 0; i < DEBUG_MAX_VIEWS; i++) { | |
332 | if (db_info->views[i] == NULL) | |
333 | continue; | |
334 | #ifdef CONFIG_PROC_FS | |
335 | remove_proc_entry(db_info->proc_entries[i]->name, | |
336 | db_info->proc_root_entry); | |
337 | #endif | |
338 | } | |
339 | #ifdef CONFIG_PROC_FS | |
340 | remove_proc_entry(db_info->proc_root_entry->name, | |
341 | debug_proc_root_entry); | |
342 | #endif | |
343 | if(db_info == debug_area_first) | |
344 | debug_area_first = db_info->next; | |
345 | if(db_info == debug_area_last) | |
346 | debug_area_last = db_info->prev; | |
347 | if(db_info->prev) db_info->prev->next = db_info->next; | |
348 | if(db_info->next) db_info->next->prev = db_info->prev; | |
349 | debug_info_free(db_info); | |
350 | } | |
351 | } | |
352 | ||
353 | /* | |
354 | * debug_format_entry: | |
355 | * - format one debug entry and return size of formated data | |
356 | */ | |
357 | ||
358 | static int debug_format_entry(file_private_info_t *p_info) | |
359 | { | |
360 | debug_info_t *id_org = p_info->debug_info_org; | |
361 | debug_info_t *id_snap = p_info->debug_info_snap; | |
362 | struct debug_view *view = p_info->view; | |
363 | debug_entry_t *act_entry; | |
364 | size_t len = 0; | |
365 | if(p_info->act_entry == DEBUG_PROLOG_ENTRY){ | |
366 | /* print prolog */ | |
367 | if (view->prolog_proc) | |
368 | len += view->prolog_proc(id_org, view,p_info->temp_buf); | |
369 | goto out; | |
370 | } | |
371 | ||
372 | act_entry = (debug_entry_t *) ((char*)id_snap->areas[p_info->act_area] + | |
373 | p_info->act_entry); | |
374 | ||
375 | if (act_entry->id.stck == 0LL) | |
376 | goto out; /* empty entry */ | |
377 | if (view->header_proc) | |
378 | len += view->header_proc(id_org, view, p_info->act_area, | |
379 | act_entry, p_info->temp_buf + len); | |
380 | if (view->format_proc) | |
381 | len += view->format_proc(id_org, view, p_info->temp_buf + len, | |
382 | DEBUG_DATA(act_entry)); | |
383 | out: | |
384 | return len; | |
385 | } | |
386 | ||
387 | /* | |
388 | * debug_next_entry: | |
389 | * - goto next entry in p_info | |
390 | */ | |
391 | ||
392 | extern inline int debug_next_entry(file_private_info_t *p_info) | |
393 | { | |
394 | debug_info_t *id = p_info->debug_info_snap; | |
395 | if(p_info->act_entry == DEBUG_PROLOG_ENTRY){ | |
396 | p_info->act_entry = 0; | |
397 | goto out; | |
398 | } | |
399 | if ((p_info->act_entry += id->entry_size) | |
400 | > ((PAGE_SIZE << (id->page_order)) | |
401 | - id->entry_size)){ | |
402 | ||
403 | /* next area */ | |
404 | p_info->act_entry = 0; | |
405 | p_info->act_area++; | |
406 | if(p_info->act_area >= id->nr_areas) | |
407 | return 1; | |
408 | } | |
409 | out: | |
410 | return 0; | |
411 | } | |
412 | ||
413 | /* | |
414 | * debug_output: | |
415 | * - called for user read() | |
416 | * - copies formated debug entries to the user buffer | |
417 | */ | |
418 | ||
419 | static ssize_t debug_output(struct file *file, /* file descriptor */ | |
420 | char __user *user_buf, /* user buffer */ | |
421 | size_t len, /* length of buffer */ | |
422 | loff_t *offset) /* offset in the file */ | |
423 | { | |
424 | size_t count = 0; | |
425 | size_t entry_offset, size = 0; | |
426 | file_private_info_t *p_info; | |
427 | ||
428 | p_info = ((file_private_info_t *) file->private_data); | |
429 | if (*offset != p_info->offset) | |
430 | return -EPIPE; | |
431 | if(p_info->act_area >= p_info->debug_info_snap->nr_areas) | |
432 | return 0; | |
433 | ||
434 | entry_offset = p_info->act_entry_offset; | |
435 | ||
436 | while(count < len){ | |
437 | size = debug_format_entry(p_info); | |
438 | size = min((len - count), (size - entry_offset)); | |
439 | ||
440 | if(size){ | |
441 | if (copy_to_user(user_buf + count, | |
442 | p_info->temp_buf + entry_offset, size)) | |
443 | return -EFAULT; | |
444 | } | |
445 | count += size; | |
446 | entry_offset = 0; | |
447 | if(count != len) | |
448 | if(debug_next_entry(p_info)) | |
449 | goto out; | |
450 | } | |
451 | out: | |
452 | p_info->offset = *offset + count; | |
453 | p_info->act_entry_offset = size; | |
454 | *offset = p_info->offset; | |
455 | return count; | |
456 | } | |
457 | ||
458 | /* | |
459 | * debug_input: | |
460 | * - called for user write() | |
461 | * - calls input function of view | |
462 | */ | |
463 | ||
464 | static ssize_t debug_input(struct file *file, | |
465 | const char __user *user_buf, size_t length, | |
466 | loff_t *offset) | |
467 | { | |
468 | int rc = 0; | |
469 | file_private_info_t *p_info; | |
470 | ||
471 | down(&debug_lock); | |
472 | p_info = ((file_private_info_t *) file->private_data); | |
473 | if (p_info->view->input_proc) | |
474 | rc = p_info->view->input_proc(p_info->debug_info_org, | |
475 | p_info->view, file, user_buf, | |
476 | length, offset); | |
477 | else | |
478 | rc = -EPERM; | |
479 | up(&debug_lock); | |
480 | return rc; /* number of input characters */ | |
481 | } | |
482 | ||
483 | /* | |
484 | * debug_open: | |
485 | * - called for user open() | |
486 | * - copies formated output to private_data area of the file | |
487 | * handle | |
488 | */ | |
489 | ||
490 | static int debug_open(struct inode *inode, struct file *file) | |
491 | { | |
492 | int i = 0, rc = 0; | |
493 | file_private_info_t *p_info; | |
494 | debug_info_t *debug_info, *debug_info_snapshot; | |
495 | ||
496 | #ifdef DEBUG | |
497 | printk("debug_open\n"); | |
498 | #endif | |
499 | down(&debug_lock); | |
500 | ||
501 | /* find debug log and view */ | |
502 | ||
503 | debug_info = debug_area_first; | |
504 | while(debug_info != NULL){ | |
505 | for (i = 0; i < DEBUG_MAX_VIEWS; i++) { | |
506 | if (debug_info->views[i] == NULL) | |
507 | continue; | |
508 | else if (debug_info->proc_entries[i] == | |
509 | PDE(file->f_dentry->d_inode)) { | |
510 | goto found; /* found view ! */ | |
511 | } | |
512 | } | |
513 | debug_info = debug_info->next; | |
514 | } | |
515 | /* no entry found */ | |
516 | rc = -EINVAL; | |
517 | goto out; | |
518 | ||
519 | found: | |
520 | ||
521 | /* make snapshot of current debug areas to get it consistent */ | |
522 | ||
523 | debug_info_snapshot = debug_info_copy(debug_info); | |
524 | ||
525 | if(!debug_info_snapshot){ | |
526 | #ifdef DEBUG | |
527 | printk(KERN_ERR "debug_open: debug_info_copy failed (out of mem)\n"); | |
528 | #endif | |
529 | rc = -ENOMEM; | |
530 | goto out; | |
531 | } | |
532 | ||
533 | if ((file->private_data = | |
534 | kmalloc(sizeof(file_private_info_t), GFP_ATOMIC)) == 0) { | |
535 | #ifdef DEBUG | |
536 | printk(KERN_ERR "debug_open: kmalloc failed\n"); | |
537 | #endif | |
538 | debug_info_free(debug_info_snapshot); | |
539 | rc = -ENOMEM; | |
540 | goto out; | |
541 | } | |
542 | p_info = (file_private_info_t *) file->private_data; | |
543 | p_info->offset = 0; | |
544 | p_info->debug_info_snap = debug_info_snapshot; | |
545 | p_info->debug_info_org = debug_info; | |
546 | p_info->view = debug_info->views[i]; | |
547 | p_info->act_area = 0; | |
548 | p_info->act_entry = DEBUG_PROLOG_ENTRY; | |
549 | p_info->act_entry_offset = 0; | |
550 | ||
551 | debug_info_get(debug_info); | |
552 | ||
553 | out: | |
554 | up(&debug_lock); | |
555 | return rc; | |
556 | } | |
557 | ||
558 | /* | |
559 | * debug_close: | |
560 | * - called for user close() | |
561 | * - deletes private_data area of the file handle | |
562 | */ | |
563 | ||
564 | static int debug_close(struct inode *inode, struct file *file) | |
565 | { | |
566 | file_private_info_t *p_info; | |
567 | #ifdef DEBUG | |
568 | printk("debug_close\n"); | |
569 | #endif | |
570 | p_info = (file_private_info_t *) file->private_data; | |
571 | debug_info_free(p_info->debug_info_snap); | |
572 | debug_info_put(p_info->debug_info_org); | |
573 | kfree(file->private_data); | |
574 | return 0; /* success */ | |
575 | } | |
576 | ||
577 | /* | |
578 | * debug_register: | |
579 | * - creates and initializes debug area for the caller | |
580 | * - returns handle for debug area | |
581 | */ | |
582 | ||
583 | debug_info_t *debug_register | |
584 | (char *name, int page_order, int nr_areas, int buf_size) | |
585 | { | |
586 | debug_info_t *rc = NULL; | |
587 | ||
588 | if (!initialized) | |
589 | BUG(); | |
590 | down(&debug_lock); | |
591 | ||
592 | /* create new debug_info */ | |
593 | ||
594 | rc = debug_info_create(name, page_order, nr_areas, buf_size); | |
595 | if(!rc) | |
596 | goto out; | |
597 | debug_register_view(rc, &debug_level_view); | |
598 | debug_register_view(rc, &debug_flush_view); | |
599 | #ifdef DEBUG | |
600 | printk(KERN_INFO | |
601 | "debug: reserved %d areas of %d pages for debugging %s\n", | |
602 | nr_areas, 1 << page_order, rc->name); | |
603 | #endif | |
604 | out: | |
605 | if (rc == NULL){ | |
606 | printk(KERN_ERR "debug: debug_register failed for %s\n",name); | |
607 | } | |
608 | up(&debug_lock); | |
609 | return rc; | |
610 | } | |
611 | ||
612 | /* | |
613 | * debug_unregister: | |
614 | * - give back debug area | |
615 | */ | |
616 | ||
617 | void debug_unregister(debug_info_t * id) | |
618 | { | |
619 | if (!id) | |
620 | goto out; | |
621 | down(&debug_lock); | |
622 | #ifdef DEBUG | |
623 | printk(KERN_INFO "debug: unregistering %s\n", id->name); | |
624 | #endif | |
625 | debug_info_put(id); | |
626 | up(&debug_lock); | |
627 | ||
628 | out: | |
629 | return; | |
630 | } | |
631 | ||
632 | /* | |
633 | * debug_set_level: | |
634 | * - set actual debug level | |
635 | */ | |
636 | ||
637 | void debug_set_level(debug_info_t* id, int new_level) | |
638 | { | |
639 | unsigned long flags; | |
640 | if(!id) | |
641 | return; | |
642 | spin_lock_irqsave(&id->lock,flags); | |
643 | if(new_level == DEBUG_OFF_LEVEL){ | |
644 | id->level = DEBUG_OFF_LEVEL; | |
645 | printk(KERN_INFO "debug: %s: switched off\n",id->name); | |
646 | } else if ((new_level > DEBUG_MAX_LEVEL) || (new_level < 0)) { | |
647 | printk(KERN_INFO | |
648 | "debug: %s: level %i is out of range (%i - %i)\n", | |
649 | id->name, new_level, 0, DEBUG_MAX_LEVEL); | |
650 | } else { | |
651 | id->level = new_level; | |
652 | #ifdef DEBUG | |
653 | printk(KERN_INFO | |
654 | "debug: %s: new level %i\n",id->name,id->level); | |
655 | #endif | |
656 | } | |
657 | spin_unlock_irqrestore(&id->lock,flags); | |
658 | } | |
659 | ||
660 | ||
661 | /* | |
662 | * proceed_active_entry: | |
663 | * - set active entry to next in the ring buffer | |
664 | */ | |
665 | ||
666 | extern inline void proceed_active_entry(debug_info_t * id) | |
667 | { | |
668 | if ((id->active_entry[id->active_area] += id->entry_size) | |
669 | > ((PAGE_SIZE << (id->page_order)) - id->entry_size)) | |
670 | id->active_entry[id->active_area] = 0; | |
671 | } | |
672 | ||
673 | /* | |
674 | * proceed_active_area: | |
675 | * - set active area to next in the ring buffer | |
676 | */ | |
677 | ||
678 | extern inline void proceed_active_area(debug_info_t * id) | |
679 | { | |
680 | id->active_area++; | |
681 | id->active_area = id->active_area % id->nr_areas; | |
682 | } | |
683 | ||
684 | /* | |
685 | * get_active_entry: | |
686 | */ | |
687 | ||
688 | extern inline debug_entry_t *get_active_entry(debug_info_t * id) | |
689 | { | |
690 | return (debug_entry_t *) ((char *) id->areas[id->active_area] + | |
691 | id->active_entry[id->active_area]); | |
692 | } | |
693 | ||
694 | /* | |
695 | * debug_finish_entry: | |
696 | * - set timestamp, caller address, cpu number etc. | |
697 | */ | |
698 | ||
699 | extern inline void debug_finish_entry(debug_info_t * id, debug_entry_t* active, | |
700 | int level, int exception) | |
701 | { | |
702 | STCK(active->id.stck); | |
703 | active->id.fields.cpuid = smp_processor_id(); | |
704 | active->caller = __builtin_return_address(0); | |
705 | active->id.fields.exception = exception; | |
706 | active->id.fields.level = level; | |
707 | proceed_active_entry(id); | |
708 | if(exception) | |
709 | proceed_active_area(id); | |
710 | } | |
711 | ||
712 | static int debug_stoppable=1; | |
713 | static int debug_active=1; | |
714 | ||
715 | #define CTL_S390DBF 5677 | |
716 | #define CTL_S390DBF_STOPPABLE 5678 | |
717 | #define CTL_S390DBF_ACTIVE 5679 | |
718 | ||
719 | /* | |
720 | * proc handler for the running debug_active sysctl | |
721 | * always allow read, allow write only if debug_stoppable is set or | |
722 | * if debug_active is already off | |
723 | */ | |
724 | static int s390dbf_procactive(ctl_table *table, int write, struct file *filp, | |
725 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
726 | { | |
727 | if (!write || debug_stoppable || !debug_active) | |
728 | return proc_dointvec(table, write, filp, buffer, lenp, ppos); | |
729 | else | |
730 | return 0; | |
731 | } | |
732 | ||
733 | ||
734 | static struct ctl_table s390dbf_table[] = { | |
735 | { | |
736 | .ctl_name = CTL_S390DBF_STOPPABLE, | |
737 | .procname = "debug_stoppable", | |
738 | .data = &debug_stoppable, | |
739 | .maxlen = sizeof(int), | |
740 | .mode = S_IRUGO | S_IWUSR, | |
741 | .proc_handler = &proc_dointvec, | |
742 | .strategy = &sysctl_intvec, | |
743 | }, | |
744 | { | |
745 | .ctl_name = CTL_S390DBF_ACTIVE, | |
746 | .procname = "debug_active", | |
747 | .data = &debug_active, | |
748 | .maxlen = sizeof(int), | |
749 | .mode = S_IRUGO | S_IWUSR, | |
750 | .proc_handler = &s390dbf_procactive, | |
751 | .strategy = &sysctl_intvec, | |
752 | }, | |
753 | { .ctl_name = 0 } | |
754 | }; | |
755 | ||
756 | static struct ctl_table s390dbf_dir_table[] = { | |
757 | { | |
758 | .ctl_name = CTL_S390DBF, | |
759 | .procname = "s390dbf", | |
760 | .maxlen = 0, | |
761 | .mode = S_IRUGO | S_IXUGO, | |
762 | .child = s390dbf_table, | |
763 | }, | |
764 | { .ctl_name = 0 } | |
765 | }; | |
766 | ||
767 | struct ctl_table_header *s390dbf_sysctl_header; | |
768 | ||
769 | void debug_stop_all(void) | |
770 | { | |
771 | if (debug_stoppable) | |
772 | debug_active = 0; | |
773 | } | |
774 | ||
775 | ||
776 | /* | |
777 | * debug_event_common: | |
778 | * - write debug entry with given size | |
779 | */ | |
780 | ||
781 | debug_entry_t *debug_event_common(debug_info_t * id, int level, const void *buf, | |
782 | int len) | |
783 | { | |
784 | unsigned long flags; | |
785 | debug_entry_t *active; | |
786 | ||
787 | if (!debug_active) | |
788 | return NULL; | |
789 | spin_lock_irqsave(&id->lock, flags); | |
790 | active = get_active_entry(id); | |
791 | memset(DEBUG_DATA(active), 0, id->buf_size); | |
792 | memcpy(DEBUG_DATA(active), buf, min(len, id->buf_size)); | |
793 | debug_finish_entry(id, active, level, 0); | |
794 | spin_unlock_irqrestore(&id->lock, flags); | |
795 | ||
796 | return active; | |
797 | } | |
798 | ||
799 | /* | |
800 | * debug_exception_common: | |
801 | * - write debug entry with given size and switch to next debug area | |
802 | */ | |
803 | ||
804 | debug_entry_t *debug_exception_common(debug_info_t * id, int level, | |
805 | const void *buf, int len) | |
806 | { | |
807 | unsigned long flags; | |
808 | debug_entry_t *active; | |
809 | ||
810 | if (!debug_active) | |
811 | return NULL; | |
812 | spin_lock_irqsave(&id->lock, flags); | |
813 | active = get_active_entry(id); | |
814 | memset(DEBUG_DATA(active), 0, id->buf_size); | |
815 | memcpy(DEBUG_DATA(active), buf, min(len, id->buf_size)); | |
816 | debug_finish_entry(id, active, level, 1); | |
817 | spin_unlock_irqrestore(&id->lock, flags); | |
818 | ||
819 | return active; | |
820 | } | |
821 | ||
822 | /* | |
823 | * counts arguments in format string for sprintf view | |
824 | */ | |
825 | ||
826 | extern inline int debug_count_numargs(char *string) | |
827 | { | |
828 | int numargs=0; | |
829 | ||
830 | while(*string) { | |
831 | if(*string++=='%') | |
832 | numargs++; | |
833 | } | |
834 | return(numargs); | |
835 | } | |
836 | ||
837 | /* | |
838 | * debug_sprintf_event: | |
839 | */ | |
840 | ||
841 | debug_entry_t *debug_sprintf_event(debug_info_t* id, | |
842 | int level,char *string,...) | |
843 | { | |
844 | va_list ap; | |
845 | int numargs,idx; | |
846 | unsigned long flags; | |
847 | debug_sprintf_entry_t *curr_event; | |
848 | debug_entry_t *active; | |
849 | ||
850 | if((!id) || (level > id->level)) | |
851 | return NULL; | |
852 | if (!debug_active) | |
853 | return NULL; | |
854 | numargs=debug_count_numargs(string); | |
855 | ||
856 | spin_lock_irqsave(&id->lock, flags); | |
857 | active = get_active_entry(id); | |
858 | curr_event=(debug_sprintf_entry_t *) DEBUG_DATA(active); | |
859 | va_start(ap,string); | |
860 | curr_event->string=string; | |
861 | for(idx=0;idx<min(numargs,(int)(id->buf_size / sizeof(long))-1);idx++) | |
862 | curr_event->args[idx]=va_arg(ap,long); | |
863 | va_end(ap); | |
864 | debug_finish_entry(id, active, level, 0); | |
865 | spin_unlock_irqrestore(&id->lock, flags); | |
866 | ||
867 | return active; | |
868 | } | |
869 | ||
870 | /* | |
871 | * debug_sprintf_exception: | |
872 | */ | |
873 | ||
874 | debug_entry_t *debug_sprintf_exception(debug_info_t* id, | |
875 | int level,char *string,...) | |
876 | { | |
877 | va_list ap; | |
878 | int numargs,idx; | |
879 | unsigned long flags; | |
880 | debug_sprintf_entry_t *curr_event; | |
881 | debug_entry_t *active; | |
882 | ||
883 | if((!id) || (level > id->level)) | |
884 | return NULL; | |
885 | if (!debug_active) | |
886 | return NULL; | |
887 | ||
888 | numargs=debug_count_numargs(string); | |
889 | ||
890 | spin_lock_irqsave(&id->lock, flags); | |
891 | active = get_active_entry(id); | |
892 | curr_event=(debug_sprintf_entry_t *)DEBUG_DATA(active); | |
893 | va_start(ap,string); | |
894 | curr_event->string=string; | |
895 | for(idx=0;idx<min(numargs,(int)(id->buf_size / sizeof(long))-1);idx++) | |
896 | curr_event->args[idx]=va_arg(ap,long); | |
897 | va_end(ap); | |
898 | debug_finish_entry(id, active, level, 1); | |
899 | spin_unlock_irqrestore(&id->lock, flags); | |
900 | ||
901 | return active; | |
902 | } | |
903 | ||
904 | /* | |
905 | * debug_init: | |
906 | * - is called exactly once to initialize the debug feature | |
907 | */ | |
908 | ||
909 | static int __init debug_init(void) | |
910 | { | |
911 | int rc = 0; | |
912 | ||
913 | s390dbf_sysctl_header = register_sysctl_table(s390dbf_dir_table, 1); | |
914 | down(&debug_lock); | |
915 | #ifdef CONFIG_PROC_FS | |
916 | debug_proc_root_entry = proc_mkdir(DEBUG_DIR_ROOT, NULL); | |
917 | #endif /* CONFIG_PROC_FS */ | |
918 | printk(KERN_INFO "debug: Initialization complete\n"); | |
919 | initialized = 1; | |
920 | up(&debug_lock); | |
921 | ||
922 | return rc; | |
923 | } | |
924 | ||
925 | /* | |
926 | * debug_register_view: | |
927 | */ | |
928 | ||
929 | int debug_register_view(debug_info_t * id, struct debug_view *view) | |
930 | { | |
931 | int rc = 0; | |
932 | int i; | |
933 | unsigned long flags; | |
934 | mode_t mode = S_IFREG; | |
935 | struct proc_dir_entry *pde; | |
936 | ||
937 | if (!id) | |
938 | goto out; | |
939 | if (view->prolog_proc || view->format_proc || view->header_proc) | |
940 | mode |= S_IRUSR; | |
941 | if (view->input_proc) | |
942 | mode |= S_IWUSR; | |
943 | pde = create_proc_entry(view->name, mode, id->proc_root_entry); | |
944 | if (!pde){ | |
945 | printk(KERN_WARNING "debug: create_proc_entry() failed! Cannot register view %s/%s\n", id->name,view->name); | |
946 | rc = -1; | |
947 | goto out; | |
948 | } | |
949 | ||
950 | spin_lock_irqsave(&id->lock, flags); | |
951 | for (i = 0; i < DEBUG_MAX_VIEWS; i++) { | |
952 | if (id->views[i] == NULL) | |
953 | break; | |
954 | } | |
955 | if (i == DEBUG_MAX_VIEWS) { | |
956 | printk(KERN_WARNING "debug: cannot register view %s/%s\n", | |
957 | id->name,view->name); | |
958 | printk(KERN_WARNING | |
959 | "debug: maximum number of views reached (%i)!\n", i); | |
960 | remove_proc_entry(pde->name, id->proc_root_entry); | |
961 | rc = -1; | |
962 | } | |
963 | else { | |
964 | id->views[i] = view; | |
965 | pde->proc_fops = &debug_file_ops; | |
966 | id->proc_entries[i] = pde; | |
967 | } | |
968 | spin_unlock_irqrestore(&id->lock, flags); | |
969 | out: | |
970 | return rc; | |
971 | } | |
972 | ||
973 | /* | |
974 | * debug_unregister_view: | |
975 | */ | |
976 | ||
977 | int debug_unregister_view(debug_info_t * id, struct debug_view *view) | |
978 | { | |
979 | int rc = 0; | |
980 | int i; | |
981 | unsigned long flags; | |
982 | ||
983 | if (!id) | |
984 | goto out; | |
985 | spin_lock_irqsave(&id->lock, flags); | |
986 | for (i = 0; i < DEBUG_MAX_VIEWS; i++) { | |
987 | if (id->views[i] == view) | |
988 | break; | |
989 | } | |
990 | if (i == DEBUG_MAX_VIEWS) | |
991 | rc = -1; | |
992 | else { | |
993 | #ifdef CONFIG_PROC_FS | |
994 | remove_proc_entry(id->proc_entries[i]->name, | |
995 | id->proc_root_entry); | |
996 | #endif | |
997 | id->views[i] = NULL; | |
998 | rc = 0; | |
999 | } | |
1000 | spin_unlock_irqrestore(&id->lock, flags); | |
1001 | out: | |
1002 | return rc; | |
1003 | } | |
1004 | ||
1005 | /* | |
1006 | * functions for debug-views | |
1007 | *********************************** | |
1008 | */ | |
1009 | ||
1010 | /* | |
1011 | * prints out actual debug level | |
1012 | */ | |
1013 | ||
1014 | static int debug_prolog_level_fn(debug_info_t * id, | |
1015 | struct debug_view *view, char *out_buf) | |
1016 | { | |
1017 | int rc = 0; | |
1018 | ||
1019 | if(id->level == -1) rc = sprintf(out_buf,"-\n"); | |
1020 | else rc = sprintf(out_buf, "%i\n", id->level); | |
1021 | return rc; | |
1022 | } | |
1023 | ||
1024 | /* | |
1025 | * reads new debug level | |
1026 | */ | |
1027 | ||
1028 | static int debug_input_level_fn(debug_info_t * id, struct debug_view *view, | |
1029 | struct file *file, const char __user *user_buf, | |
1030 | size_t in_buf_size, loff_t * offset) | |
1031 | { | |
1032 | char input_buf[1]; | |
1033 | int rc = in_buf_size; | |
1034 | ||
1035 | if (*offset != 0) | |
1036 | goto out; | |
1037 | if (copy_from_user(input_buf, user_buf, 1)){ | |
1038 | rc = -EFAULT; | |
1039 | goto out; | |
1040 | } | |
1041 | if (isdigit(input_buf[0])) { | |
1042 | int new_level = ((int) input_buf[0] - (int) '0'); | |
1043 | debug_set_level(id, new_level); | |
1044 | } else if(input_buf[0] == '-') { | |
1045 | debug_set_level(id, DEBUG_OFF_LEVEL); | |
1046 | } else { | |
1047 | printk(KERN_INFO "debug: level `%c` is not valid\n", | |
1048 | input_buf[0]); | |
1049 | } | |
1050 | out: | |
1051 | *offset += in_buf_size; | |
1052 | return rc; /* number of input characters */ | |
1053 | } | |
1054 | ||
1055 | ||
1056 | /* | |
1057 | * flushes debug areas | |
1058 | */ | |
1059 | ||
1060 | void debug_flush(debug_info_t* id, int area) | |
1061 | { | |
1062 | unsigned long flags; | |
1063 | int i; | |
1064 | ||
1065 | if(!id) | |
1066 | return; | |
1067 | spin_lock_irqsave(&id->lock,flags); | |
1068 | if(area == DEBUG_FLUSH_ALL){ | |
1069 | id->active_area = 0; | |
1070 | memset(id->active_entry, 0, id->nr_areas * sizeof(int)); | |
1071 | for (i = 0; i < id->nr_areas; i++) | |
1072 | memset(id->areas[i], 0, PAGE_SIZE << id->page_order); | |
1073 | printk(KERN_INFO "debug: %s: all areas flushed\n",id->name); | |
1074 | } else if(area >= 0 && area < id->nr_areas) { | |
1075 | id->active_entry[area] = 0; | |
1076 | memset(id->areas[area], 0, PAGE_SIZE << id->page_order); | |
1077 | printk(KERN_INFO | |
1078 | "debug: %s: area %i has been flushed\n", | |
1079 | id->name, area); | |
1080 | } else { | |
1081 | printk(KERN_INFO | |
1082 | "debug: %s: area %i cannot be flushed (range: %i - %i)\n", | |
1083 | id->name, area, 0, id->nr_areas-1); | |
1084 | } | |
1085 | spin_unlock_irqrestore(&id->lock,flags); | |
1086 | } | |
1087 | ||
1088 | /* | |
1089 | * view function: flushes debug areas | |
1090 | */ | |
1091 | ||
1092 | static int debug_input_flush_fn(debug_info_t * id, struct debug_view *view, | |
1093 | struct file *file, const char __user *user_buf, | |
1094 | size_t in_buf_size, loff_t * offset) | |
1095 | { | |
1096 | char input_buf[1]; | |
1097 | int rc = in_buf_size; | |
1098 | ||
1099 | if (*offset != 0) | |
1100 | goto out; | |
1101 | if (copy_from_user(input_buf, user_buf, 1)){ | |
1102 | rc = -EFAULT; | |
1103 | goto out; | |
1104 | } | |
1105 | if(input_buf[0] == '-') { | |
1106 | debug_flush(id, DEBUG_FLUSH_ALL); | |
1107 | goto out; | |
1108 | } | |
1109 | if (isdigit(input_buf[0])) { | |
1110 | int area = ((int) input_buf[0] - (int) '0'); | |
1111 | debug_flush(id, area); | |
1112 | goto out; | |
1113 | } | |
1114 | ||
1115 | printk(KERN_INFO "debug: area `%c` is not valid\n", input_buf[0]); | |
1116 | ||
1117 | out: | |
1118 | *offset += in_buf_size; | |
1119 | return rc; /* number of input characters */ | |
1120 | } | |
1121 | ||
1122 | /* | |
1123 | * prints debug header in raw format | |
1124 | */ | |
1125 | ||
1126 | int debug_raw_header_fn(debug_info_t * id, struct debug_view *view, | |
1127 | int area, debug_entry_t * entry, char *out_buf) | |
1128 | { | |
1129 | int rc; | |
1130 | ||
1131 | rc = sizeof(debug_entry_t); | |
1132 | memcpy(out_buf,entry,sizeof(debug_entry_t)); | |
1133 | return rc; | |
1134 | } | |
1135 | ||
1136 | /* | |
1137 | * prints debug data in raw format | |
1138 | */ | |
1139 | ||
1140 | static int debug_raw_format_fn(debug_info_t * id, struct debug_view *view, | |
1141 | char *out_buf, const char *in_buf) | |
1142 | { | |
1143 | int rc; | |
1144 | ||
1145 | rc = id->buf_size; | |
1146 | memcpy(out_buf, in_buf, id->buf_size); | |
1147 | return rc; | |
1148 | } | |
1149 | ||
1150 | /* | |
1151 | * prints debug data in hex/ascii format | |
1152 | */ | |
1153 | ||
1154 | static int debug_hex_ascii_format_fn(debug_info_t * id, struct debug_view *view, | |
1155 | char *out_buf, const char *in_buf) | |
1156 | { | |
1157 | int i, rc = 0; | |
1158 | ||
1159 | for (i = 0; i < id->buf_size; i++) { | |
1160 | rc += sprintf(out_buf + rc, "%02x ", | |
1161 | ((unsigned char *) in_buf)[i]); | |
1162 | } | |
1163 | rc += sprintf(out_buf + rc, "| "); | |
1164 | for (i = 0; i < id->buf_size; i++) { | |
1165 | unsigned char c = in_buf[i]; | |
1166 | if (!isprint(c)) | |
1167 | rc += sprintf(out_buf + rc, "."); | |
1168 | else | |
1169 | rc += sprintf(out_buf + rc, "%c", c); | |
1170 | } | |
1171 | rc += sprintf(out_buf + rc, "\n"); | |
1172 | return rc; | |
1173 | } | |
1174 | ||
1175 | /* | |
1176 | * prints header for debug entry | |
1177 | */ | |
1178 | ||
1179 | int debug_dflt_header_fn(debug_info_t * id, struct debug_view *view, | |
1180 | int area, debug_entry_t * entry, char *out_buf) | |
1181 | { | |
1182 | struct timeval time_val; | |
1183 | unsigned long long time; | |
1184 | char *except_str; | |
1185 | unsigned long caller; | |
1186 | int rc = 0; | |
1187 | unsigned int level; | |
1188 | ||
1189 | level = entry->id.fields.level; | |
1190 | time = entry->id.stck; | |
1191 | /* adjust todclock to 1970 */ | |
1192 | time -= 0x8126d60e46000000LL - (0x3c26700LL * 1000000 * 4096); | |
1193 | tod_to_timeval(time, &time_val); | |
1194 | ||
1195 | if (entry->id.fields.exception) | |
1196 | except_str = "*"; | |
1197 | else | |
1198 | except_str = "-"; | |
1199 | caller = ((unsigned long) entry->caller) & PSW_ADDR_INSN; | |
1200 | rc += sprintf(out_buf, "%02i %011lu:%06lu %1u %1s %02i %p ", | |
1201 | area, time_val.tv_sec, time_val.tv_usec, level, | |
1202 | except_str, entry->id.fields.cpuid, (void *) caller); | |
1203 | return rc; | |
1204 | } | |
1205 | ||
1206 | /* | |
1207 | * prints debug data sprintf-formated: | |
1208 | * debug_sprinf_event/exception calls must be used together with this view | |
1209 | */ | |
1210 | ||
1211 | #define DEBUG_SPRINTF_MAX_ARGS 10 | |
1212 | ||
1213 | int debug_sprintf_format_fn(debug_info_t * id, struct debug_view *view, | |
1214 | char *out_buf, debug_sprintf_entry_t *curr_event) | |
1215 | { | |
1216 | int num_longs, num_used_args = 0,i, rc = 0; | |
1217 | int index[DEBUG_SPRINTF_MAX_ARGS]; | |
1218 | ||
1219 | /* count of longs fit into one entry */ | |
1220 | num_longs = id->buf_size / sizeof(long); | |
1221 | ||
1222 | if(num_longs < 1) | |
1223 | goto out; /* bufsize of entry too small */ | |
1224 | if(num_longs == 1) { | |
1225 | /* no args, we use only the string */ | |
1226 | strcpy(out_buf, curr_event->string); | |
1227 | rc = strlen(curr_event->string); | |
1228 | goto out; | |
1229 | } | |
1230 | ||
1231 | /* number of arguments used for sprintf (without the format string) */ | |
1232 | num_used_args = min(DEBUG_SPRINTF_MAX_ARGS, (num_longs - 1)); | |
1233 | ||
1234 | memset(index,0, DEBUG_SPRINTF_MAX_ARGS * sizeof(int)); | |
1235 | ||
1236 | for(i = 0; i < num_used_args; i++) | |
1237 | index[i] = i; | |
1238 | ||
1239 | rc = sprintf(out_buf, curr_event->string, curr_event->args[index[0]], | |
1240 | curr_event->args[index[1]], curr_event->args[index[2]], | |
1241 | curr_event->args[index[3]], curr_event->args[index[4]], | |
1242 | curr_event->args[index[5]], curr_event->args[index[6]], | |
1243 | curr_event->args[index[7]], curr_event->args[index[8]], | |
1244 | curr_event->args[index[9]]); | |
1245 | ||
1246 | out: | |
1247 | ||
1248 | return rc; | |
1249 | } | |
1250 | ||
1251 | /* | |
1252 | * clean up module | |
1253 | */ | |
1254 | void __exit debug_exit(void) | |
1255 | { | |
1256 | #ifdef DEBUG | |
1257 | printk("debug_cleanup_module: \n"); | |
1258 | #endif | |
1259 | #ifdef CONFIG_PROC_FS | |
1260 | remove_proc_entry(debug_proc_root_entry->name, NULL); | |
1261 | #endif /* CONFIG_PROC_FS */ | |
1262 | unregister_sysctl_table(s390dbf_sysctl_header); | |
1263 | return; | |
1264 | } | |
1265 | ||
1266 | /* | |
1267 | * module definitions | |
1268 | */ | |
1269 | core_initcall(debug_init); | |
1270 | module_exit(debug_exit); | |
1271 | MODULE_LICENSE("GPL"); | |
1272 | ||
1273 | EXPORT_SYMBOL(debug_register); | |
1274 | EXPORT_SYMBOL(debug_unregister); | |
1275 | EXPORT_SYMBOL(debug_set_level); | |
1276 | EXPORT_SYMBOL(debug_stop_all); | |
1277 | EXPORT_SYMBOL(debug_register_view); | |
1278 | EXPORT_SYMBOL(debug_unregister_view); | |
1279 | EXPORT_SYMBOL(debug_event_common); | |
1280 | EXPORT_SYMBOL(debug_exception_common); | |
1281 | EXPORT_SYMBOL(debug_hex_ascii_view); | |
1282 | EXPORT_SYMBOL(debug_raw_view); | |
1283 | EXPORT_SYMBOL(debug_dflt_header_fn); | |
1284 | EXPORT_SYMBOL(debug_sprintf_view); | |
1285 | EXPORT_SYMBOL(debug_sprintf_exception); | |
1286 | EXPORT_SYMBOL(debug_sprintf_event); |