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715f6251 BB |
1 | /* |
2 | * This file is part of the SPL: Solaris Porting Layer. | |
3 | * | |
4 | * Copyright (c) 2008 Lawrence Livermore National Security, LLC. | |
5 | * Produced at Lawrence Livermore National Laboratory | |
6 | * Written by: | |
7 | * Brian Behlendorf <behlendorf1@llnl.gov>, | |
8 | * Herb Wartens <wartens2@llnl.gov>, | |
9 | * Jim Garlick <garlick@llnl.gov> | |
10 | * UCRL-CODE-235197 | |
11 | * | |
12 | * This is free software; you can redistribute it and/or modify it | |
13 | * under the terms of the GNU General Public License as published by | |
14 | * the Free Software Foundation; either version 2 of the License, or | |
15 | * (at your option) any later version. | |
16 | * | |
17 | * This is distributed in the hope that it will be useful, but WITHOUT | |
18 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
19 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
20 | * for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License along | |
23 | * with this program; if not, write to the Free Software Foundation, Inc., | |
24 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
25 | */ | |
26 | ||
04a479f7 | 27 | #include <sys/proc.h> |
57d1b188 BB |
28 | |
29 | #ifdef DEBUG_SUBSYSTEM | |
30 | #undef DEBUG_SUBSYSTEM | |
31 | #endif | |
32 | ||
33 | #define DEBUG_SUBSYSTEM S_PROC | |
34 | ||
404992e3 | 35 | #ifdef DEBUG_KMEM |
57d1b188 BB |
36 | static unsigned long table_min = 0; |
37 | static unsigned long table_max = ~0; | |
404992e3 BB |
38 | #endif |
39 | ||
40 | #ifdef CONFIG_SYSCTL | |
41 | static struct ctl_table_header *spl_header = NULL; | |
c30df9c8 BB |
42 | #endif /* CONFIG_SYSCTL */ |
43 | ||
57d86234 | 44 | #if defined(DEBUG_MUTEX) || defined(DEBUG_KMEM) || defined(DEBUG_KSTAT) |
c30df9c8 | 45 | static struct proc_dir_entry *proc_spl = NULL; |
404992e3 | 46 | #ifdef DEBUG_MUTEX |
c30df9c8 BB |
47 | static struct proc_dir_entry *proc_spl_mutex = NULL; |
48 | static struct proc_dir_entry *proc_spl_mutex_stats = NULL; | |
49 | #endif /* DEBUG_MUTEX */ | |
04a479f7 | 50 | #ifdef DEBUG_KMEM |
c30df9c8 | 51 | static struct proc_dir_entry *proc_spl_kmem = NULL; |
ff449ac4 | 52 | static struct proc_dir_entry *proc_spl_kmem_slab = NULL; |
c30df9c8 | 53 | #endif /* DEBUG_KMEM */ |
04a479f7 | 54 | #ifdef DEBUG_KSTAT |
c30df9c8 BB |
55 | struct proc_dir_entry *proc_spl_kstat = NULL; |
56 | #endif /* DEBUG_KSTAT */ | |
57 | #endif /* DEBUG_MUTEX || DEBUG_KMEM || DEBUG_KSTAT */ | |
57d1b188 | 58 | |
57d86234 BB |
59 | #ifdef HAVE_CTL_UNNUMBERED |
60 | ||
61 | #define CTL_SPL CTL_UNNUMBERED | |
62 | #define CTL_SPL_DEBUG CTL_UNNUMBERED | |
36b313da | 63 | #define CTL_SPL_VM CTL_UNNUMBERED |
57d86234 BB |
64 | #define CTL_SPL_MUTEX CTL_UNNUMBERED |
65 | #define CTL_SPL_KMEM CTL_UNNUMBERED | |
66 | #define CTL_SPL_KSTAT CTL_UNNUMBERED | |
67 | ||
68 | #define CTL_VERSION CTL_UNNUMBERED /* Version */ | |
69 | #define CTL_HOSTID CTL_UNNUMBERED /* Host id by /usr/bin/hostid */ | |
70 | #define CTL_HW_SERIAL CTL_UNNUMBERED /* HW serial number by hostid */ | |
71 | ||
72 | #define CTL_DEBUG_SUBSYS CTL_UNNUMBERED /* Debug subsystem */ | |
73 | #define CTL_DEBUG_MASK CTL_UNNUMBERED /* Debug mask */ | |
74 | #define CTL_DEBUG_PRINTK CTL_UNNUMBERED /* All messages to console */ | |
75 | #define CTL_DEBUG_MB CTL_UNNUMBERED /* Debug buffer size */ | |
76 | #define CTL_DEBUG_BINARY CTL_UNNUMBERED /* Binary data in buffer */ | |
77 | #define CTL_DEBUG_CATASTROPHE CTL_UNNUMBERED /* Set if BUG'd or panic'd */ | |
78 | #define CTL_DEBUG_PANIC_ON_BUG CTL_UNNUMBERED /* Should panic on BUG */ | |
79 | #define CTL_DEBUG_PATH CTL_UNNUMBERED /* Dump log location */ | |
80 | #define CTL_DEBUG_DUMP CTL_UNNUMBERED /* Dump debug buffer to file */ | |
81 | #define CTL_DEBUG_FORCE_BUG CTL_UNNUMBERED /* Hook to force a BUG */ | |
82 | #define CTL_DEBUG_STACK_SIZE CTL_UNNUMBERED /* Max observed stack size */ | |
83 | ||
84 | #define CTL_CONSOLE_RATELIMIT CTL_UNNUMBERED /* Ratelimit console messages */ | |
85 | #define CTL_CONSOLE_MAX_DELAY_CS CTL_UNNUMBERED /* Max delay skip messages */ | |
86 | #define CTL_CONSOLE_MIN_DELAY_CS CTL_UNNUMBERED /* Init delay skip messages */ | |
87 | #define CTL_CONSOLE_BACKOFF CTL_UNNUMBERED /* Delay increase factor */ | |
88 | ||
36b313da BB |
89 | #define CTL_VM_MINFREE CTL_UNNUMBERED /* Minimum free memory */ |
90 | #define CTL_VM_DESFREE CTL_UNNUMBERED /* Desired free memory */ | |
91 | #define CTL_VM_LOTSFREE CTL_UNNUMBERED /* Lots of free memory */ | |
92 | #define CTL_VM_NEEDFREE CTL_UNNUMBERED /* Need free memory */ | |
93 | #define CTL_VM_SWAPFS_MINFREE CTL_UNNUMBERED /* Minimum swapfs memory */ | |
36b313da | 94 | #define CTL_VM_SWAPFS_RESERVE CTL_UNNUMBERED /* Reserved swapfs memory */ |
4ab13d3b BB |
95 | #define CTL_VM_AVAILRMEM CTL_UNNUMBERED /* Easily available memory */ |
96 | #define CTL_VM_FREEMEM CTL_UNNUMBERED /* Free memory */ | |
97 | #define CTL_VM_PHYSMEM CTL_UNNUMBERED /* Total physical memory */ | |
36b313da | 98 | |
57d86234 BB |
99 | #ifdef DEBUG_KMEM |
100 | #define CTL_KMEM_KMEMUSED CTL_UNNUMBERED /* Alloc'd kmem bytes */ | |
101 | #define CTL_KMEM_KMEMMAX CTL_UNNUMBERED /* Max alloc'd by kmem bytes */ | |
102 | #define CTL_KMEM_VMEMUSED CTL_UNNUMBERED /* Alloc'd vmem bytes */ | |
103 | #define CTL_KMEM_VMEMMAX CTL_UNNUMBERED /* Max alloc'd by vmem bytes */ | |
104 | #define CTL_KMEM_ALLOC_FAILED CTL_UNNUMBERED /* Cache allocations failed */ | |
105 | #endif | |
106 | ||
107 | #define CTL_MUTEX_STATS CTL_UNNUMBERED /* Global mutex statistics */ | |
108 | #define CTL_MUTEX_STATS_PER CTL_UNNUMBERED /* Per mutex statistics */ | |
109 | #define CTL_MUTEX_SPIN_MAX CTL_UNNUMBERED /* Max mutex spin iterations */ | |
110 | ||
111 | #else /* HAVE_CTL_UNNUMBERED */ | |
112 | ||
36b313da BB |
113 | enum { |
114 | CTL_SPL = 0x87, | |
115 | CTL_SPL_DEBUG = 0x88, | |
116 | CTL_SPL_VM = 0x89, | |
117 | CTL_SPL_MUTEX = 0x90, | |
118 | CTL_SPL_KMEM = 0x91, | |
119 | CTL_SPL_KSTAT = 0x92, | |
120 | }; | |
9ab1ac14 | 121 | |
57d1b188 | 122 | enum { |
36b313da BB |
123 | CTL_VERSION = 1, /* Version */ |
124 | CTL_HOSTID, /* Host id reported by /usr/bin/hostid */ | |
125 | CTL_HW_SERIAL, /* Hardware serial number from hostid */ | |
126 | ||
127 | CTL_DEBUG_SUBSYS, /* Debug subsystem */ | |
128 | CTL_DEBUG_MASK, /* Debug mask */ | |
129 | CTL_DEBUG_PRINTK, /* Force all messages to console */ | |
130 | CTL_DEBUG_MB, /* Debug buffer size */ | |
131 | CTL_DEBUG_BINARY, /* Include binary data in buffer */ | |
132 | CTL_DEBUG_CATASTROPHE, /* Set if we have BUG'd or panic'd */ | |
133 | CTL_DEBUG_PANIC_ON_BUG, /* Set if we should panic on BUG */ | |
134 | CTL_DEBUG_PATH, /* Dump log location */ | |
135 | CTL_DEBUG_DUMP, /* Dump debug buffer to file */ | |
136 | CTL_DEBUG_FORCE_BUG, /* Hook to force a BUG */ | |
137 | CTL_DEBUG_STACK_SIZE, /* Max observed stack size */ | |
138 | ||
139 | CTL_CONSOLE_RATELIMIT, /* Ratelimit console messages */ | |
140 | CTL_CONSOLE_MAX_DELAY_CS, /* Max delay which we skip messages */ | |
141 | CTL_CONSOLE_MIN_DELAY_CS, /* Init delay which we skip messages */ | |
142 | CTL_CONSOLE_BACKOFF, /* Delay increase factor */ | |
143 | ||
144 | CTL_VM_MINFREE, /* Minimum free memory threshold */ | |
145 | CTL_VM_DESFREE, /* Desired free memory threshold */ | |
146 | CTL_VM_LOTSFREE, /* Lots of free memory threshold */ | |
147 | CTL_VM_NEEDFREE, /* Need free memory deficit */ | |
148 | CTL_VM_SWAPFS_MINFREE, /* Minimum swapfs memory */ | |
36b313da | 149 | CTL_VM_SWAPFS_RESERVE, /* Reserved swapfs memory */ |
4ab13d3b BB |
150 | CTL_VM_AVAILRMEM, /* Easily available memory */ |
151 | CTL_VM_FREEMEM, /* Free memory */ | |
152 | CTL_VM_PHYSMEM, /* Total physical memory */ | |
9ab1ac14 | 153 | |
57d1b188 | 154 | #ifdef DEBUG_KMEM |
36b313da BB |
155 | CTL_KMEM_KMEMUSED, /* Alloc'd kmem bytes */ |
156 | CTL_KMEM_KMEMMAX, /* Max alloc'd by kmem bytes */ | |
157 | CTL_KMEM_VMEMUSED, /* Alloc'd vmem bytes */ | |
158 | CTL_KMEM_VMEMMAX, /* Max alloc'd by vmem bytes */ | |
57d1b188 | 159 | #endif |
9ab1ac14 | 160 | |
36b313da BB |
161 | CTL_MUTEX_STATS, /* Global mutex statistics */ |
162 | CTL_MUTEX_STATS_PER, /* Per mutex statistics */ | |
163 | CTL_MUTEX_SPIN_MAX, /* Maximum mutex spin iterations */ | |
57d1b188 | 164 | }; |
57d86234 | 165 | #endif /* HAVE_CTL_UNNUMBERED */ |
57d1b188 BB |
166 | |
167 | static int | |
168 | proc_copyin_string(char *kbuffer, int kbuffer_size, | |
169 | const char *ubuffer, int ubuffer_size) | |
170 | { | |
171 | int size; | |
172 | ||
173 | if (ubuffer_size > kbuffer_size) | |
174 | return -EOVERFLOW; | |
175 | ||
176 | if (copy_from_user((void *)kbuffer, (void *)ubuffer, ubuffer_size)) | |
177 | return -EFAULT; | |
178 | ||
179 | /* strip trailing whitespace */ | |
180 | size = strnlen(kbuffer, ubuffer_size); | |
181 | while (size-- >= 0) | |
182 | if (!isspace(kbuffer[size])) | |
183 | break; | |
184 | ||
185 | /* empty string */ | |
186 | if (size < 0) | |
187 | return -EINVAL; | |
188 | ||
189 | /* no space to terminate */ | |
190 | if (size == kbuffer_size) | |
191 | return -EOVERFLOW; | |
192 | ||
193 | kbuffer[size + 1] = 0; | |
194 | return 0; | |
195 | } | |
196 | ||
197 | static int | |
198 | proc_copyout_string(char *ubuffer, int ubuffer_size, | |
199 | const char *kbuffer, char *append) | |
200 | { | |
201 | /* NB if 'append' != NULL, it's a single character to append to the | |
202 | * copied out string - usually "\n", for /proc entries and | |
203 | * (i.e. a terminating zero byte) for sysctl entries | |
204 | */ | |
205 | int size = MIN(strlen(kbuffer), ubuffer_size); | |
206 | ||
207 | if (copy_to_user(ubuffer, kbuffer, size)) | |
208 | return -EFAULT; | |
209 | ||
210 | if (append != NULL && size < ubuffer_size) { | |
211 | if (copy_to_user(ubuffer + size, append, 1)) | |
212 | return -EFAULT; | |
213 | ||
214 | size++; | |
215 | } | |
216 | ||
217 | return size; | |
218 | } | |
219 | ||
220 | static int | |
221 | proc_dobitmasks(struct ctl_table *table, int write, struct file *filp, | |
222 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
223 | { | |
224 | unsigned long *mask = table->data; | |
225 | int is_subsys = (mask == &spl_debug_subsys) ? 1 : 0; | |
226 | int is_printk = (mask == &spl_debug_printk) ? 1 : 0; | |
227 | int size = 512, rc; | |
228 | char *str; | |
229 | ENTRY; | |
230 | ||
231 | str = kmem_alloc(size, KM_SLEEP); | |
232 | if (str == NULL) | |
233 | RETURN(-ENOMEM); | |
234 | ||
235 | if (write) { | |
236 | rc = proc_copyin_string(str, size, buffer, *lenp); | |
237 | if (rc < 0) | |
238 | RETURN(rc); | |
239 | ||
240 | rc = spl_debug_str2mask(mask, str, is_subsys); | |
241 | /* Always print BUG/ASSERT to console, so keep this mask */ | |
242 | if (is_printk) | |
243 | *mask |= D_EMERG; | |
244 | ||
245 | *ppos += *lenp; | |
246 | } else { | |
247 | rc = spl_debug_mask2str(str, size, *mask, is_subsys); | |
248 | if (*ppos >= rc) | |
249 | rc = 0; | |
250 | else | |
251 | rc = proc_copyout_string(buffer, *lenp, | |
252 | str + *ppos, "\n"); | |
253 | if (rc >= 0) { | |
254 | *lenp = rc; | |
255 | *ppos += rc; | |
256 | } | |
257 | } | |
258 | ||
259 | kmem_free(str, size); | |
260 | RETURN(rc); | |
261 | } | |
262 | ||
263 | static int | |
264 | proc_debug_mb(struct ctl_table *table, int write, struct file *filp, | |
265 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
266 | { | |
267 | char str[32]; | |
268 | int rc, len; | |
269 | ENTRY; | |
270 | ||
271 | if (write) { | |
272 | rc = proc_copyin_string(str, sizeof(str), buffer, *lenp); | |
273 | if (rc < 0) | |
274 | RETURN(rc); | |
275 | ||
276 | rc = spl_debug_set_mb(simple_strtoul(str, NULL, 0)); | |
277 | *ppos += *lenp; | |
278 | } else { | |
279 | len = snprintf(str, sizeof(str), "%d", spl_debug_get_mb()); | |
280 | if (*ppos >= len) | |
281 | rc = 0; | |
282 | else | |
283 | rc = proc_copyout_string(buffer, *lenp, str + *ppos, "\n"); | |
284 | ||
285 | if (rc >= 0) { | |
286 | *lenp = rc; | |
287 | *ppos += rc; | |
288 | } | |
289 | } | |
290 | ||
291 | RETURN(rc); | |
292 | } | |
293 | ||
294 | static int | |
295 | proc_dump_kernel(struct ctl_table *table, int write, struct file *filp, | |
296 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
297 | { | |
298 | ENTRY; | |
299 | ||
300 | if (write) { | |
7fea96c0 | 301 | spl_debug_dumplog(0); |
57d1b188 BB |
302 | *ppos += *lenp; |
303 | } else { | |
304 | *lenp = 0; | |
305 | } | |
306 | ||
307 | RETURN(0); | |
308 | } | |
309 | ||
310 | static int | |
311 | proc_force_bug(struct ctl_table *table, int write, struct file *filp, | |
312 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
313 | { | |
314 | ENTRY; | |
315 | ||
316 | if (write) { | |
2fae1b3d BB |
317 | CERROR("Crashing due to forced SBUG\n"); |
318 | SBUG(); | |
57d1b188 BB |
319 | /* Unreachable */ |
320 | } else { | |
321 | *lenp = 0; | |
322 | } | |
323 | ||
324 | RETURN(0); | |
325 | } | |
326 | ||
327 | static int | |
328 | proc_console_max_delay_cs(struct ctl_table *table, int write, struct file *filp, | |
329 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
330 | { | |
331 | int rc, max_delay_cs; | |
332 | struct ctl_table dummy = *table; | |
333 | long d; | |
334 | ENTRY; | |
335 | ||
336 | dummy.data = &max_delay_cs; | |
337 | dummy.proc_handler = &proc_dointvec; | |
338 | ||
339 | if (write) { | |
340 | max_delay_cs = 0; | |
341 | rc = proc_dointvec(&dummy, write, filp, buffer, lenp, ppos); | |
342 | if (rc < 0) | |
343 | RETURN(rc); | |
344 | ||
345 | if (max_delay_cs <= 0) | |
346 | RETURN(-EINVAL); | |
347 | ||
348 | d = (max_delay_cs * HZ) / 100; | |
349 | if (d == 0 || d < spl_console_min_delay) | |
350 | RETURN(-EINVAL); | |
351 | ||
352 | spl_console_max_delay = d; | |
353 | } else { | |
354 | max_delay_cs = (spl_console_max_delay * 100) / HZ; | |
355 | rc = proc_dointvec(&dummy, write, filp, buffer, lenp, ppos); | |
356 | } | |
357 | ||
358 | RETURN(rc); | |
359 | } | |
360 | ||
361 | static int | |
362 | proc_console_min_delay_cs(struct ctl_table *table, int write, struct file *filp, | |
363 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
364 | { | |
365 | int rc, min_delay_cs; | |
366 | struct ctl_table dummy = *table; | |
367 | long d; | |
368 | ENTRY; | |
369 | ||
370 | dummy.data = &min_delay_cs; | |
371 | dummy.proc_handler = &proc_dointvec; | |
372 | ||
373 | if (write) { | |
374 | min_delay_cs = 0; | |
375 | rc = proc_dointvec(&dummy, write, filp, buffer, lenp, ppos); | |
376 | if (rc < 0) | |
377 | RETURN(rc); | |
378 | ||
379 | if (min_delay_cs <= 0) | |
380 | RETURN(-EINVAL); | |
381 | ||
382 | d = (min_delay_cs * HZ) / 100; | |
383 | if (d == 0 || d > spl_console_max_delay) | |
384 | RETURN(-EINVAL); | |
385 | ||
386 | spl_console_min_delay = d; | |
387 | } else { | |
388 | min_delay_cs = (spl_console_min_delay * 100) / HZ; | |
389 | rc = proc_dointvec(&dummy, write, filp, buffer, lenp, ppos); | |
390 | } | |
391 | ||
392 | RETURN(rc); | |
393 | } | |
394 | ||
395 | static int | |
396 | proc_console_backoff(struct ctl_table *table, int write, struct file *filp, | |
397 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
398 | { | |
399 | int rc, backoff; | |
400 | struct ctl_table dummy = *table; | |
401 | ENTRY; | |
402 | ||
403 | dummy.data = &backoff; | |
404 | dummy.proc_handler = &proc_dointvec; | |
405 | ||
406 | if (write) { | |
407 | backoff = 0; | |
408 | rc = proc_dointvec(&dummy, write, filp, buffer, lenp, ppos); | |
409 | if (rc < 0) | |
410 | RETURN(rc); | |
411 | ||
412 | if (backoff <= 0) | |
413 | RETURN(-EINVAL); | |
414 | ||
415 | spl_console_backoff = backoff; | |
416 | } else { | |
417 | backoff = spl_console_backoff; | |
418 | rc = proc_dointvec(&dummy, write, filp, buffer, lenp, ppos); | |
419 | } | |
420 | ||
421 | RETURN(rc); | |
422 | } | |
423 | ||
c6dc93d6 | 424 | #ifdef DEBUG_KMEM |
57d1b188 BB |
425 | static int |
426 | proc_doatomic64(struct ctl_table *table, int write, struct file *filp, | |
427 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
428 | { | |
429 | int rc = 0; | |
430 | unsigned long min = 0, max = ~0, val; | |
431 | struct ctl_table dummy = *table; | |
432 | ENTRY; | |
433 | ||
434 | dummy.data = &val; | |
435 | dummy.proc_handler = &proc_dointvec; | |
436 | dummy.extra1 = &min; | |
437 | dummy.extra2 = &max; | |
438 | ||
439 | if (write) { | |
440 | *ppos += *lenp; | |
441 | } else { | |
550f1705 | 442 | val = atomic64_read((atomic64_t *)table->data); |
57d1b188 BB |
443 | rc = proc_doulongvec_minmax(&dummy, write, filp, |
444 | buffer, lenp, ppos); | |
445 | } | |
446 | ||
447 | RETURN(rc); | |
448 | } | |
c6dc93d6 | 449 | #endif /* DEBUG_KMEM */ |
57d1b188 BB |
450 | |
451 | static int | |
452 | proc_dohostid(struct ctl_table *table, int write, struct file *filp, | |
453 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
454 | { | |
455 | int len, rc = 0; | |
937879f1 | 456 | int32_t val; |
57d1b188 BB |
457 | char *end, str[32]; |
458 | ENTRY; | |
459 | ||
460 | if (write) { | |
461 | /* We can't use proc_doulongvec_minmax() in the write | |
462 | * case hear because hostid while a hex value has no | |
463 | * leading 0x which confuses the helper function. */ | |
464 | rc = proc_copyin_string(str, sizeof(str), buffer, *lenp); | |
465 | if (rc < 0) | |
466 | RETURN(rc); | |
467 | ||
937879f1 | 468 | val = simple_strtol(str, &end, 16); |
57d1b188 BB |
469 | if (str == end) |
470 | RETURN(-EINVAL); | |
471 | ||
937879f1 | 472 | spl_hostid = (long)val; |
99639e4a BB |
473 | (void)snprintf(hw_serial, HW_HOSTID_LEN-1, "%u", |
474 | (val >= 0) ? val : -val); | |
57d1b188 BB |
475 | *ppos += *lenp; |
476 | } else { | |
477 | len = snprintf(str, sizeof(str), "%lx", spl_hostid); | |
478 | if (*ppos >= len) | |
479 | rc = 0; | |
480 | else | |
481 | rc = proc_copyout_string(buffer, *lenp, str + *ppos, "\n"); | |
482 | ||
483 | if (rc >= 0) { | |
484 | *lenp = rc; | |
485 | *ppos += rc; | |
486 | } | |
487 | } | |
488 | ||
489 | RETURN(rc); | |
490 | } | |
491 | ||
4ab13d3b BB |
492 | static int |
493 | proc_doavailrmem(struct ctl_table *table, int write, struct file *filp, | |
494 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
495 | { | |
496 | int len, rc = 0; | |
497 | char str[32]; | |
498 | ENTRY; | |
499 | ||
500 | if (write) { | |
501 | *ppos += *lenp; | |
502 | } else { | |
503 | len = snprintf(str, sizeof(str), "%lu", (unsigned long)availrmem); | |
504 | if (*ppos >= len) | |
505 | rc = 0; | |
506 | else | |
507 | rc = proc_copyout_string(buffer, *lenp, str + *ppos, "\n"); | |
508 | ||
509 | if (rc >= 0) { | |
510 | *lenp = rc; | |
511 | *ppos += rc; | |
512 | } | |
513 | } | |
514 | ||
515 | RETURN(rc); | |
516 | } | |
517 | ||
518 | static int | |
519 | proc_dofreemem(struct ctl_table *table, int write, struct file *filp, | |
520 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
521 | { | |
522 | int len, rc = 0; | |
523 | char str[32]; | |
524 | ENTRY; | |
525 | ||
526 | if (write) { | |
527 | *ppos += *lenp; | |
528 | } else { | |
529 | len = snprintf(str, sizeof(str), "%lu", (unsigned long)freemem); | |
530 | if (*ppos >= len) | |
531 | rc = 0; | |
532 | else | |
533 | rc = proc_copyout_string(buffer, *lenp, str + *ppos, "\n"); | |
534 | ||
535 | if (rc >= 0) { | |
536 | *lenp = rc; | |
537 | *ppos += rc; | |
538 | } | |
539 | } | |
540 | ||
541 | RETURN(rc); | |
542 | } | |
543 | ||
9ab1ac14 BB |
544 | #ifdef DEBUG_MUTEX |
545 | static void | |
546 | mutex_seq_show_headers(struct seq_file *f) | |
547 | { | |
548 | seq_printf(f, "%-36s %-4s %-16s\t" | |
549 | "e_tot\te_nh\te_sp\te_sl\tte_tot\tte_nh\n", | |
550 | "name", "type", "owner"); | |
551 | } | |
552 | ||
553 | static int | |
554 | mutex_seq_show(struct seq_file *f, void *p) | |
555 | { | |
556 | kmutex_t *mp = p; | |
557 | char t = 'X'; | |
558 | int i; | |
559 | ||
560 | ASSERT(mp->km_magic == KM_MAGIC); | |
561 | ||
562 | switch (mp->km_type) { | |
563 | case MUTEX_DEFAULT: t = 'D'; break; | |
564 | case MUTEX_SPIN: t = 'S'; break; | |
565 | case MUTEX_ADAPTIVE: t = 'A'; break; | |
566 | default: | |
567 | SBUG(); | |
568 | } | |
569 | seq_printf(f, "%-36s %c ", mp->km_name, t); | |
570 | if (mp->km_owner) | |
571 | seq_printf(f, "%p\t", mp->km_owner); | |
572 | else | |
573 | seq_printf(f, "%-16s\t", "<not held>"); | |
574 | ||
575 | for (i = 0; i < MUTEX_STATS_SIZE; i++) | |
576 | seq_printf(f, "%d%c", mp->km_stats[i], | |
577 | (i + 1 == MUTEX_STATS_SIZE) ? '\n' : '\t'); | |
578 | ||
579 | return 0; | |
580 | } | |
581 | ||
582 | static void * | |
583 | mutex_seq_start(struct seq_file *f, loff_t *pos) | |
584 | { | |
585 | struct list_head *p; | |
586 | loff_t n = *pos; | |
587 | ENTRY; | |
588 | ||
404992e3 | 589 | spin_lock(&mutex_stats_lock); |
9ab1ac14 BB |
590 | if (!n) |
591 | mutex_seq_show_headers(f); | |
592 | ||
593 | p = mutex_stats_list.next; | |
594 | while (n--) { | |
595 | p = p->next; | |
596 | if (p == &mutex_stats_list) | |
597 | RETURN(NULL); | |
598 | } | |
599 | ||
600 | RETURN(list_entry(p, kmutex_t, km_list)); | |
601 | } | |
602 | ||
603 | static void * | |
604 | mutex_seq_next(struct seq_file *f, void *p, loff_t *pos) | |
605 | { | |
606 | kmutex_t *mp = p; | |
607 | ENTRY; | |
608 | ||
609 | ++*pos; | |
610 | RETURN((mp->km_list.next == &mutex_stats_list) ? | |
611 | NULL : list_entry(mp->km_list.next, kmutex_t, km_list)); | |
612 | } | |
613 | ||
614 | static void | |
615 | mutex_seq_stop(struct seq_file *f, void *v) | |
616 | { | |
404992e3 | 617 | spin_unlock(&mutex_stats_lock); |
9ab1ac14 BB |
618 | } |
619 | ||
620 | static struct seq_operations mutex_seq_ops = { | |
621 | .show = mutex_seq_show, | |
622 | .start = mutex_seq_start, | |
623 | .next = mutex_seq_next, | |
624 | .stop = mutex_seq_stop, | |
625 | }; | |
626 | ||
627 | static int | |
628 | proc_mutex_open(struct inode *inode, struct file *filp) | |
629 | { | |
630 | return seq_open(filp, &mutex_seq_ops); | |
631 | } | |
632 | ||
633 | static struct file_operations proc_mutex_operations = { | |
634 | .open = proc_mutex_open, | |
635 | .read = seq_read, | |
636 | .llseek = seq_lseek, | |
637 | .release = seq_release, | |
638 | }; | |
639 | #endif /* DEBUG_MUTEX */ | |
640 | ||
ff449ac4 BB |
641 | #ifdef DEBUG_KMEM |
642 | static void | |
643 | slab_seq_show_headers(struct seq_file *f) | |
644 | { | |
645 | seq_printf(f, "%-36s\n", "name"); | |
646 | } | |
647 | ||
648 | static int | |
649 | slab_seq_show(struct seq_file *f, void *p) | |
650 | { | |
651 | spl_kmem_cache_t *skc = p; | |
652 | ||
653 | ASSERT(skc->skc_magic == SKC_MAGIC); | |
654 | ||
655 | spin_lock(&skc->skc_lock); | |
656 | seq_printf(f, "%-36s ", skc->skc_name); | |
a1502d76 | 657 | seq_printf(f, "%u %u %u - %lu %lu %lu - %lu %lu %lu - %lu %lu %lu\n", |
ff449ac4 | 658 | (unsigned)skc->skc_obj_size, |
a1502d76 | 659 | (unsigned)skc->skc_slab_objs, |
ff449ac4 | 660 | (unsigned)skc->skc_slab_size, |
ff449ac4 BB |
661 | (long unsigned)skc->skc_slab_fail, |
662 | (long unsigned)skc->skc_slab_create, | |
663 | (long unsigned)skc->skc_slab_destroy, | |
664 | (long unsigned)skc->skc_slab_total, | |
665 | (long unsigned)skc->skc_slab_alloc, | |
666 | (long unsigned)skc->skc_slab_max, | |
667 | (long unsigned)skc->skc_obj_total, | |
668 | (long unsigned)skc->skc_obj_alloc, | |
a1502d76 | 669 | (long unsigned)skc->skc_obj_max); |
ff449ac4 BB |
670 | |
671 | spin_unlock(&skc->skc_lock); | |
672 | ||
673 | return 0; | |
674 | } | |
675 | ||
676 | static void * | |
677 | slab_seq_start(struct seq_file *f, loff_t *pos) | |
678 | { | |
679 | struct list_head *p; | |
680 | loff_t n = *pos; | |
681 | ENTRY; | |
682 | ||
683 | down_read(&spl_kmem_cache_sem); | |
684 | if (!n) | |
685 | slab_seq_show_headers(f); | |
686 | ||
687 | p = spl_kmem_cache_list.next; | |
688 | while (n--) { | |
689 | p = p->next; | |
690 | if (p == &spl_kmem_cache_list) | |
691 | RETURN(NULL); | |
692 | } | |
693 | ||
694 | RETURN(list_entry(p, spl_kmem_cache_t, skc_list)); | |
695 | } | |
696 | ||
697 | static void * | |
698 | slab_seq_next(struct seq_file *f, void *p, loff_t *pos) | |
699 | { | |
700 | spl_kmem_cache_t *skc = p; | |
701 | ENTRY; | |
702 | ||
703 | ++*pos; | |
704 | RETURN((skc->skc_list.next == &spl_kmem_cache_list) ? | |
705 | NULL : list_entry(skc->skc_list.next, spl_kmem_cache_t, skc_list)); | |
706 | } | |
707 | ||
708 | static void | |
709 | slab_seq_stop(struct seq_file *f, void *v) | |
710 | { | |
711 | up_read(&spl_kmem_cache_sem); | |
712 | } | |
713 | ||
714 | static struct seq_operations slab_seq_ops = { | |
715 | .show = slab_seq_show, | |
716 | .start = slab_seq_start, | |
717 | .next = slab_seq_next, | |
718 | .stop = slab_seq_stop, | |
719 | }; | |
720 | ||
721 | static int | |
722 | proc_slab_open(struct inode *inode, struct file *filp) | |
723 | { | |
724 | return seq_open(filp, &slab_seq_ops); | |
725 | } | |
726 | ||
727 | static struct file_operations proc_slab_operations = { | |
728 | .open = proc_slab_open, | |
729 | .read = seq_read, | |
730 | .llseek = seq_lseek, | |
731 | .release = seq_release, | |
732 | }; | |
733 | #endif /* DEBUG_KMEM */ | |
734 | ||
9ab1ac14 | 735 | static struct ctl_table spl_debug_table[] = { |
57d1b188 BB |
736 | { |
737 | .ctl_name = CTL_DEBUG_SUBSYS, | |
9ab1ac14 | 738 | .procname = "subsystem", |
57d1b188 BB |
739 | .data = &spl_debug_subsys, |
740 | .maxlen = sizeof(unsigned long), | |
741 | .mode = 0644, | |
742 | .proc_handler = &proc_dobitmasks | |
743 | }, | |
744 | { | |
745 | .ctl_name = CTL_DEBUG_MASK, | |
9ab1ac14 | 746 | .procname = "mask", |
57d1b188 BB |
747 | .data = &spl_debug_mask, |
748 | .maxlen = sizeof(unsigned long), | |
749 | .mode = 0644, | |
750 | .proc_handler = &proc_dobitmasks | |
751 | }, | |
752 | { | |
753 | .ctl_name = CTL_DEBUG_PRINTK, | |
9ab1ac14 | 754 | .procname = "printk", |
57d1b188 BB |
755 | .data = &spl_debug_printk, |
756 | .maxlen = sizeof(unsigned long), | |
757 | .mode = 0644, | |
758 | .proc_handler = &proc_dobitmasks | |
759 | }, | |
760 | { | |
761 | .ctl_name = CTL_DEBUG_MB, | |
9ab1ac14 | 762 | .procname = "mb", |
57d1b188 BB |
763 | .mode = 0644, |
764 | .proc_handler = &proc_debug_mb, | |
765 | }, | |
766 | { | |
767 | .ctl_name = CTL_DEBUG_BINARY, | |
9ab1ac14 | 768 | .procname = "binary", |
57d1b188 BB |
769 | .data = &spl_debug_binary, |
770 | .maxlen = sizeof(int), | |
771 | .mode = 0644, | |
772 | .proc_handler = &proc_dointvec, | |
773 | }, | |
774 | { | |
775 | .ctl_name = CTL_DEBUG_CATASTROPHE, | |
776 | .procname = "catastrophe", | |
777 | .data = &spl_debug_catastrophe, | |
778 | .maxlen = sizeof(int), | |
779 | .mode = 0444, | |
780 | .proc_handler = &proc_dointvec, | |
781 | }, | |
782 | { | |
783 | .ctl_name = CTL_DEBUG_PANIC_ON_BUG, | |
784 | .procname = "panic_on_bug", | |
785 | .data = &spl_debug_panic_on_bug, | |
786 | .maxlen = sizeof(int), | |
787 | .mode = 0644, | |
788 | .proc_handler = &proc_dointvec | |
789 | }, | |
790 | { | |
791 | .ctl_name = CTL_DEBUG_PATH, | |
9ab1ac14 | 792 | .procname = "path", |
57d1b188 BB |
793 | .data = spl_debug_file_path, |
794 | .maxlen = sizeof(spl_debug_file_path), | |
795 | .mode = 0644, | |
796 | .proc_handler = &proc_dostring, | |
797 | }, | |
798 | { | |
799 | .ctl_name = CTL_DEBUG_DUMP, | |
9ab1ac14 | 800 | .procname = "dump", |
57d1b188 BB |
801 | .mode = 0200, |
802 | .proc_handler = &proc_dump_kernel, | |
803 | }, | |
804 | { .ctl_name = CTL_DEBUG_FORCE_BUG, | |
805 | .procname = "force_bug", | |
806 | .mode = 0200, | |
807 | .proc_handler = &proc_force_bug, | |
808 | }, | |
809 | { | |
810 | .ctl_name = CTL_CONSOLE_RATELIMIT, | |
811 | .procname = "console_ratelimit", | |
812 | .data = &spl_console_ratelimit, | |
813 | .maxlen = sizeof(int), | |
814 | .mode = 0644, | |
815 | .proc_handler = &proc_dointvec, | |
816 | }, | |
817 | { | |
818 | .ctl_name = CTL_CONSOLE_MAX_DELAY_CS, | |
819 | .procname = "console_max_delay_centisecs", | |
820 | .maxlen = sizeof(int), | |
821 | .mode = 0644, | |
822 | .proc_handler = &proc_console_max_delay_cs, | |
823 | }, | |
824 | { | |
825 | .ctl_name = CTL_CONSOLE_MIN_DELAY_CS, | |
826 | .procname = "console_min_delay_centisecs", | |
827 | .maxlen = sizeof(int), | |
828 | .mode = 0644, | |
829 | .proc_handler = &proc_console_min_delay_cs, | |
830 | }, | |
831 | { | |
832 | .ctl_name = CTL_CONSOLE_BACKOFF, | |
833 | .procname = "console_backoff", | |
834 | .maxlen = sizeof(int), | |
835 | .mode = 0644, | |
836 | .proc_handler = &proc_console_backoff, | |
837 | }, | |
838 | { | |
9ab1ac14 | 839 | .ctl_name = CTL_DEBUG_STACK_SIZE, |
57d1b188 BB |
840 | .procname = "stack_max", |
841 | .data = &spl_debug_stack, | |
842 | .maxlen = sizeof(int), | |
843 | .mode = 0444, | |
844 | .proc_handler = &proc_dointvec, | |
845 | }, | |
9ab1ac14 BB |
846 | {0}, |
847 | }; | |
848 | ||
36b313da BB |
849 | static struct ctl_table spl_vm_table[] = { |
850 | { | |
851 | .ctl_name = CTL_VM_MINFREE, | |
852 | .procname = "minfree", | |
853 | .data = &minfree, | |
854 | .maxlen = sizeof(int), | |
855 | .mode = 0644, | |
856 | .proc_handler = &proc_dointvec, | |
857 | }, | |
858 | { | |
859 | .ctl_name = CTL_VM_DESFREE, | |
860 | .procname = "desfree", | |
861 | .data = &desfree, | |
862 | .maxlen = sizeof(int), | |
863 | .mode = 0644, | |
864 | .proc_handler = &proc_dointvec, | |
865 | }, | |
866 | { | |
867 | .ctl_name = CTL_VM_LOTSFREE, | |
868 | .procname = "lotsfree", | |
869 | .data = &lotsfree, | |
870 | .maxlen = sizeof(int), | |
871 | .mode = 0644, | |
872 | .proc_handler = &proc_dointvec, | |
873 | }, | |
874 | { | |
875 | .ctl_name = CTL_VM_NEEDFREE, | |
876 | .procname = "needfree", | |
877 | .data = &needfree, | |
878 | .maxlen = sizeof(int), | |
879 | .mode = 0444, | |
880 | .proc_handler = &proc_dointvec, | |
881 | }, | |
882 | { | |
883 | .ctl_name = CTL_VM_SWAPFS_MINFREE, | |
884 | .procname = "swapfs_minfree", | |
885 | .data = &swapfs_minfree, | |
886 | .maxlen = sizeof(int), | |
887 | .mode = 0644, | |
888 | .proc_handler = &proc_dointvec, | |
889 | }, | |
36b313da BB |
890 | { |
891 | .ctl_name = CTL_VM_SWAPFS_RESERVE, | |
892 | .procname = "swapfs_reserve", | |
893 | .data = &swapfs_reserve, | |
894 | .maxlen = sizeof(int), | |
895 | .mode = 0644, | |
896 | .proc_handler = &proc_dointvec, | |
897 | }, | |
898 | { | |
899 | .ctl_name = CTL_VM_AVAILRMEM, | |
900 | .procname = "availrmem", | |
4ab13d3b BB |
901 | .mode = 0444, |
902 | .proc_handler = &proc_doavailrmem, | |
903 | }, | |
904 | { | |
905 | .ctl_name = CTL_VM_FREEMEM, | |
906 | .procname = "freemem", | |
907 | .data = (void *)2, | |
908 | .maxlen = sizeof(int), | |
909 | .mode = 0444, | |
910 | .proc_handler = &proc_dofreemem, | |
911 | }, | |
912 | { | |
913 | .ctl_name = CTL_VM_PHYSMEM, | |
914 | .procname = "physmem", | |
915 | .data = &physmem, | |
36b313da BB |
916 | .maxlen = sizeof(int), |
917 | .mode = 0444, | |
918 | .proc_handler = &proc_dointvec, | |
919 | }, | |
920 | {0}, | |
921 | }; | |
922 | ||
9ab1ac14 BB |
923 | #ifdef DEBUG_MUTEX |
924 | static struct ctl_table spl_mutex_table[] = { | |
925 | { | |
926 | .ctl_name = CTL_MUTEX_STATS, | |
927 | .procname = "stats", | |
928 | .data = &mutex_stats, | |
929 | .maxlen = sizeof(int) * MUTEX_STATS_SIZE, | |
930 | .mode = 0444, | |
931 | .proc_handler = &proc_dointvec, | |
932 | }, | |
933 | { | |
934 | .ctl_name = CTL_MUTEX_SPIN_MAX, | |
935 | .procname = "spin_max", | |
936 | .data = &mutex_spin_max, | |
937 | .maxlen = sizeof(int), | |
938 | .mode = 0644, | |
939 | .proc_handler = &proc_dointvec, | |
940 | }, | |
941 | {0}, | |
942 | }; | |
943 | #endif /* DEBUG_MUTEX */ | |
944 | ||
57d1b188 | 945 | #ifdef DEBUG_KMEM |
9ab1ac14 | 946 | static struct ctl_table spl_kmem_table[] = { |
57d1b188 BB |
947 | { |
948 | .ctl_name = CTL_KMEM_KMEMUSED, | |
949 | .procname = "kmem_used", | |
950 | .data = &kmem_alloc_used, | |
951 | .maxlen = sizeof(atomic64_t), | |
952 | .mode = 0444, | |
953 | .proc_handler = &proc_doatomic64, | |
954 | }, | |
955 | { | |
956 | .ctl_name = CTL_KMEM_KMEMMAX, | |
957 | .procname = "kmem_max", | |
958 | .data = &kmem_alloc_max, | |
959 | .maxlen = sizeof(unsigned long), | |
960 | .extra1 = &table_min, | |
961 | .extra2 = &table_max, | |
962 | .mode = 0444, | |
963 | .proc_handler = &proc_doulongvec_minmax, | |
964 | }, | |
965 | { | |
966 | .ctl_name = CTL_KMEM_VMEMUSED, | |
967 | .procname = "vmem_used", | |
968 | .data = &vmem_alloc_used, | |
969 | .maxlen = sizeof(atomic64_t), | |
970 | .mode = 0444, | |
971 | .proc_handler = &proc_doatomic64, | |
972 | }, | |
973 | { | |
974 | .ctl_name = CTL_KMEM_VMEMMAX, | |
975 | .procname = "vmem_max", | |
976 | .data = &vmem_alloc_max, | |
977 | .maxlen = sizeof(unsigned long), | |
978 | .extra1 = &table_min, | |
979 | .extra2 = &table_max, | |
980 | .mode = 0444, | |
981 | .proc_handler = &proc_doulongvec_minmax, | |
982 | }, | |
9ab1ac14 BB |
983 | {0}, |
984 | }; | |
04a479f7 BB |
985 | #endif /* DEBUG_KMEM */ |
986 | ||
987 | #ifdef DEBUG_KSTAT | |
988 | static struct ctl_table spl_kstat_table[] = { | |
989 | {0}, | |
990 | }; | |
991 | #endif /* DEBUG_KSTAT */ | |
9ab1ac14 BB |
992 | |
993 | static struct ctl_table spl_table[] = { | |
994 | /* NB No .strategy entries have been provided since | |
995 | * sysctl(8) prefers to go via /proc for portability. | |
996 | */ | |
997 | { | |
998 | .ctl_name = CTL_VERSION, | |
999 | .procname = "version", | |
1000 | .data = spl_version, | |
1001 | .maxlen = sizeof(spl_version), | |
1002 | .mode = 0444, | |
1003 | .proc_handler = &proc_dostring, | |
1004 | }, | |
57d1b188 BB |
1005 | { |
1006 | .ctl_name = CTL_HOSTID, | |
1007 | .procname = "hostid", | |
1008 | .data = &spl_hostid, | |
1009 | .maxlen = sizeof(unsigned long), | |
1010 | .mode = 0644, | |
1011 | .proc_handler = &proc_dohostid, | |
1012 | }, | |
1013 | { | |
1014 | .ctl_name = CTL_HW_SERIAL, | |
1015 | .procname = "hw_serial", | |
937879f1 BB |
1016 | .data = hw_serial, |
1017 | .maxlen = sizeof(hw_serial), | |
57d1b188 BB |
1018 | .mode = 0444, |
1019 | .proc_handler = &proc_dostring, | |
1020 | }, | |
9ab1ac14 BB |
1021 | { |
1022 | .ctl_name = CTL_SPL_DEBUG, | |
1023 | .procname = "debug", | |
1024 | .mode = 0555, | |
1025 | .child = spl_debug_table, | |
1026 | }, | |
36b313da BB |
1027 | { |
1028 | .ctl_name = CTL_SPL_VM, | |
1029 | .procname = "vm", | |
1030 | .mode = 0555, | |
1031 | .child = spl_vm_table, | |
1032 | }, | |
9ab1ac14 BB |
1033 | #ifdef DEBUG_MUTEX |
1034 | { | |
1035 | .ctl_name = CTL_SPL_MUTEX, | |
1036 | .procname = "mutex", | |
1037 | .mode = 0555, | |
1038 | .child = spl_mutex_table, | |
1039 | }, | |
1040 | #endif | |
1041 | #ifdef DEBUG_KMEM | |
1042 | { | |
1043 | .ctl_name = CTL_SPL_KMEM, | |
1044 | .procname = "kmem", | |
1045 | .mode = 0555, | |
1046 | .child = spl_kmem_table, | |
1047 | }, | |
04a479f7 BB |
1048 | #endif |
1049 | #ifdef DEBUG_KSTAT | |
1050 | { | |
1051 | .ctl_name = CTL_SPL_KSTAT, | |
1052 | .procname = "kstat", | |
1053 | .mode = 0555, | |
1054 | .child = spl_kstat_table, | |
1055 | }, | |
9ab1ac14 | 1056 | #endif |
57d1b188 BB |
1057 | { 0 }, |
1058 | }; | |
1059 | ||
9ab1ac14 | 1060 | static struct ctl_table spl_dir[] = { |
57d1b188 BB |
1061 | { |
1062 | .ctl_name = CTL_SPL, | |
1063 | .procname = "spl", | |
1064 | .mode = 0555, | |
1065 | .child = spl_table, | |
1066 | }, | |
57d86234 BB |
1067 | { 0 } |
1068 | }; | |
1069 | ||
1070 | static struct ctl_table spl_root[] = { | |
1071 | { | |
1072 | .ctl_name = CTL_KERN, | |
1073 | .procname = "kernel", | |
1074 | .mode = 0555, | |
1075 | .child = spl_dir, | |
1076 | }, | |
1077 | { 0 } | |
57d1b188 BB |
1078 | }; |
1079 | ||
404992e3 BB |
1080 | static int |
1081 | proc_dir_entry_match(int len, const char *name, struct proc_dir_entry *de) | |
1082 | { | |
1083 | if (de->namelen != len) | |
1084 | return 0; | |
1085 | ||
1086 | return !memcmp(name, de->name, len); | |
1087 | } | |
1088 | ||
04a479f7 | 1089 | struct proc_dir_entry * |
404992e3 BB |
1090 | proc_dir_entry_find(struct proc_dir_entry *root, const char *str) |
1091 | { | |
1092 | struct proc_dir_entry *de; | |
1093 | ||
1094 | for (de = root->subdir; de; de = de->next) | |
1095 | if (proc_dir_entry_match(strlen(str), str, de)) | |
1096 | return de; | |
1097 | ||
1098 | return NULL; | |
1099 | } | |
1100 | ||
04a479f7 BB |
1101 | int |
1102 | proc_dir_entries(struct proc_dir_entry *root) | |
1103 | { | |
1104 | struct proc_dir_entry *de; | |
1105 | int i = 0; | |
1106 | ||
1107 | for (de = root->subdir; de; de = de->next) | |
1108 | i++; | |
1109 | ||
1110 | return i; | |
1111 | } | |
1112 | ||
57d1b188 BB |
1113 | int |
1114 | proc_init(void) | |
1115 | { | |
404992e3 | 1116 | int rc = 0; |
57d1b188 BB |
1117 | ENTRY; |
1118 | ||
1119 | #ifdef CONFIG_SYSCTL | |
57d86234 | 1120 | spl_header = spl_register_sysctl_table(spl_root, 0); |
57d1b188 BB |
1121 | if (spl_header == NULL) |
1122 | RETURN(-EUNATCH); | |
c30df9c8 | 1123 | #endif /* CONFIG_SYSCTL */ |
9ab1ac14 | 1124 | |
57d86234 | 1125 | #if defined(DEBUG_MUTEX) || defined(DEBUG_KMEM) || defined(DEBUG_KSTAT) |
c30df9c8 BB |
1126 | proc_spl = proc_mkdir("spl", NULL); |
1127 | if (proc_spl == NULL) | |
404992e3 BB |
1128 | GOTO(out, rc = -EUNATCH); |
1129 | ||
9ab1ac14 | 1130 | #ifdef DEBUG_MUTEX |
c30df9c8 BB |
1131 | proc_spl_mutex = proc_mkdir("mutex", proc_spl); |
1132 | if (proc_spl_mutex == NULL) | |
404992e3 BB |
1133 | GOTO(out, rc = -EUNATCH); |
1134 | ||
c30df9c8 BB |
1135 | proc_spl_mutex_stats = create_proc_entry("stats_per", 0444, |
1136 | proc_spl_mutex); | |
1137 | if (proc_spl_mutex_stats == NULL) | |
404992e3 BB |
1138 | GOTO(out, rc = -EUNATCH); |
1139 | ||
c30df9c8 | 1140 | proc_spl_mutex_stats->proc_fops = &proc_mutex_operations; |
9ab1ac14 | 1141 | #endif /* DEBUG_MUTEX */ |
04a479f7 BB |
1142 | |
1143 | #ifdef DEBUG_KMEM | |
c30df9c8 BB |
1144 | proc_spl_kmem = proc_mkdir("kmem", proc_spl); |
1145 | if (proc_spl_kmem == NULL) | |
1146 | GOTO(out, rc = -EUNATCH); | |
ff449ac4 BB |
1147 | |
1148 | proc_spl_kmem_slab = create_proc_entry("slab", 0444, proc_spl_kmem); | |
1149 | if (proc_spl_kmem_slab == NULL) | |
1150 | GOTO(out, rc = -EUNATCH); | |
1151 | ||
1152 | proc_spl_kmem_slab->proc_fops = &proc_slab_operations; | |
04a479f7 BB |
1153 | #endif /* DEBUG_KMEM */ |
1154 | ||
1155 | #ifdef DEBUG_KSTAT | |
c30df9c8 BB |
1156 | proc_spl_kstat = proc_mkdir("kstat", proc_spl); |
1157 | if (proc_spl_kstat == NULL) | |
1158 | GOTO(out, rc = -EUNATCH); | |
04a479f7 BB |
1159 | #endif /* DEBUG_KSTAT */ |
1160 | ||
404992e3 | 1161 | out: |
c30df9c8 BB |
1162 | if (rc) { |
1163 | remove_proc_entry("kstat", proc_spl); | |
ff449ac4 BB |
1164 | #ifdef DEBUG_KMEM |
1165 | remove_proc_entry("slab", proc_spl_kmem); | |
1166 | #endif | |
c30df9c8 | 1167 | remove_proc_entry("kmem", proc_spl); |
4afaaefa | 1168 | #ifdef DEBUG_MUTEX |
c30df9c8 | 1169 | remove_proc_entry("stats_per", proc_spl_mutex); |
4afaaefa | 1170 | #endif |
c30df9c8 | 1171 | remove_proc_entry("mutex", proc_spl); |
a02118a8 | 1172 | remove_proc_entry("spl", NULL); |
c30df9c8 BB |
1173 | #ifdef CONFIG_SYSCTL |
1174 | spl_unregister_sysctl_table(spl_header); | |
404992e3 | 1175 | #endif /* CONFIG_SYSCTL */ |
c30df9c8 BB |
1176 | } |
1177 | #endif /* DEBUG_MUTEX || DEBUG_KMEM || DEBUG_KSTAT */ | |
1178 | ||
404992e3 | 1179 | RETURN(rc); |
57d1b188 BB |
1180 | } |
1181 | ||
1182 | void | |
1183 | proc_fini(void) | |
1184 | { | |
1185 | ENTRY; | |
1186 | ||
c30df9c8 BB |
1187 | #if defined(DEBUG_MUTEX) || defined(DEBUG_KMEM) || defined(DEBUG_KSTAT) |
1188 | remove_proc_entry("kstat", proc_spl); | |
ff449ac4 BB |
1189 | #ifdef DEBUG_KMEM |
1190 | remove_proc_entry("slab", proc_spl_kmem); | |
1191 | #endif | |
c30df9c8 | 1192 | remove_proc_entry("kmem", proc_spl); |
4afaaefa | 1193 | #ifdef DEBUG_MUTEX |
c30df9c8 | 1194 | remove_proc_entry("stats_per", proc_spl_mutex); |
4afaaefa | 1195 | #endif |
c30df9c8 | 1196 | remove_proc_entry("mutex", proc_spl); |
a02118a8 | 1197 | remove_proc_entry("spl", NULL); |
c30df9c8 BB |
1198 | #endif /* DEBUG_MUTEX || DEBUG_KMEM || DEBUG_KSTAT */ |
1199 | ||
57d1b188 BB |
1200 | #ifdef CONFIG_SYSCTL |
1201 | ASSERT(spl_header != NULL); | |
57d86234 | 1202 | spl_unregister_sysctl_table(spl_header); |
c30df9c8 BB |
1203 | #endif /* CONFIG_SYSCTL */ |
1204 | ||
57d1b188 BB |
1205 | EXIT; |
1206 | } |