]>
Commit | Line | Data |
---|---|---|
715f6251 | 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 | 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 | 36 | static unsigned long table_min = 0; |
37 | static unsigned long table_max = ~0; | |
404992e3 | 38 | #endif |
39 | ||
40 | #ifdef CONFIG_SYSCTL | |
41 | static struct ctl_table_header *spl_header = NULL; | |
c30df9c8 | 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 | 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 | 55 | struct proc_dir_entry *proc_spl_kstat = NULL; |
56 | #endif /* DEBUG_KSTAT */ | |
57 | #endif /* DEBUG_MUTEX || DEBUG_KMEM || DEBUG_KSTAT */ | |
57d1b188 | 58 | |
57d86234 | 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 | 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 */ | |
d1ff2312 | 71 | #define CTL_KALLSYMS CTL_UNNUMBERED /* kallsyms_lookup_name addr */ |
57d86234 | 72 | |
73 | #define CTL_DEBUG_SUBSYS CTL_UNNUMBERED /* Debug subsystem */ | |
74 | #define CTL_DEBUG_MASK CTL_UNNUMBERED /* Debug mask */ | |
75 | #define CTL_DEBUG_PRINTK CTL_UNNUMBERED /* All messages to console */ | |
76 | #define CTL_DEBUG_MB CTL_UNNUMBERED /* Debug buffer size */ | |
77 | #define CTL_DEBUG_BINARY CTL_UNNUMBERED /* Binary data in buffer */ | |
78 | #define CTL_DEBUG_CATASTROPHE CTL_UNNUMBERED /* Set if BUG'd or panic'd */ | |
79 | #define CTL_DEBUG_PANIC_ON_BUG CTL_UNNUMBERED /* Should panic on BUG */ | |
80 | #define CTL_DEBUG_PATH CTL_UNNUMBERED /* Dump log location */ | |
81 | #define CTL_DEBUG_DUMP CTL_UNNUMBERED /* Dump debug buffer to file */ | |
82 | #define CTL_DEBUG_FORCE_BUG CTL_UNNUMBERED /* Hook to force a BUG */ | |
83 | #define CTL_DEBUG_STACK_SIZE CTL_UNNUMBERED /* Max observed stack size */ | |
84 | ||
85 | #define CTL_CONSOLE_RATELIMIT CTL_UNNUMBERED /* Ratelimit console messages */ | |
86 | #define CTL_CONSOLE_MAX_DELAY_CS CTL_UNNUMBERED /* Max delay skip messages */ | |
87 | #define CTL_CONSOLE_MIN_DELAY_CS CTL_UNNUMBERED /* Init delay skip messages */ | |
88 | #define CTL_CONSOLE_BACKOFF CTL_UNNUMBERED /* Delay increase factor */ | |
89 | ||
36b313da BB |
90 | #define CTL_VM_MINFREE CTL_UNNUMBERED /* Minimum free memory */ |
91 | #define CTL_VM_DESFREE CTL_UNNUMBERED /* Desired free memory */ | |
92 | #define CTL_VM_LOTSFREE CTL_UNNUMBERED /* Lots of free memory */ | |
93 | #define CTL_VM_NEEDFREE CTL_UNNUMBERED /* Need free memory */ | |
94 | #define CTL_VM_SWAPFS_MINFREE CTL_UNNUMBERED /* Minimum swapfs memory */ | |
36b313da | 95 | #define CTL_VM_SWAPFS_RESERVE CTL_UNNUMBERED /* Reserved swapfs memory */ |
4ab13d3b BB |
96 | #define CTL_VM_AVAILRMEM CTL_UNNUMBERED /* Easily available memory */ |
97 | #define CTL_VM_FREEMEM CTL_UNNUMBERED /* Free memory */ | |
98 | #define CTL_VM_PHYSMEM CTL_UNNUMBERED /* Total physical memory */ | |
36b313da | 99 | |
57d86234 | 100 | #ifdef DEBUG_KMEM |
101 | #define CTL_KMEM_KMEMUSED CTL_UNNUMBERED /* Alloc'd kmem bytes */ | |
102 | #define CTL_KMEM_KMEMMAX CTL_UNNUMBERED /* Max alloc'd by kmem bytes */ | |
103 | #define CTL_KMEM_VMEMUSED CTL_UNNUMBERED /* Alloc'd vmem bytes */ | |
104 | #define CTL_KMEM_VMEMMAX CTL_UNNUMBERED /* Max alloc'd by vmem bytes */ | |
105 | #define CTL_KMEM_ALLOC_FAILED CTL_UNNUMBERED /* Cache allocations failed */ | |
106 | #endif | |
107 | ||
108 | #define CTL_MUTEX_STATS CTL_UNNUMBERED /* Global mutex statistics */ | |
109 | #define CTL_MUTEX_STATS_PER CTL_UNNUMBERED /* Per mutex statistics */ | |
110 | #define CTL_MUTEX_SPIN_MAX CTL_UNNUMBERED /* Max mutex spin iterations */ | |
111 | ||
112 | #else /* HAVE_CTL_UNNUMBERED */ | |
113 | ||
36b313da BB |
114 | enum { |
115 | CTL_SPL = 0x87, | |
116 | CTL_SPL_DEBUG = 0x88, | |
117 | CTL_SPL_VM = 0x89, | |
118 | CTL_SPL_MUTEX = 0x90, | |
119 | CTL_SPL_KMEM = 0x91, | |
120 | CTL_SPL_KSTAT = 0x92, | |
121 | }; | |
9ab1ac14 | 122 | |
57d1b188 | 123 | enum { |
36b313da BB |
124 | CTL_VERSION = 1, /* Version */ |
125 | CTL_HOSTID, /* Host id reported by /usr/bin/hostid */ | |
126 | CTL_HW_SERIAL, /* Hardware serial number from hostid */ | |
d1ff2312 | 127 | CTL_KALLSYMS, /* Address of kallsyms_lookup_name */ |
36b313da BB |
128 | |
129 | CTL_DEBUG_SUBSYS, /* Debug subsystem */ | |
130 | CTL_DEBUG_MASK, /* Debug mask */ | |
131 | CTL_DEBUG_PRINTK, /* Force all messages to console */ | |
132 | CTL_DEBUG_MB, /* Debug buffer size */ | |
133 | CTL_DEBUG_BINARY, /* Include binary data in buffer */ | |
134 | CTL_DEBUG_CATASTROPHE, /* Set if we have BUG'd or panic'd */ | |
135 | CTL_DEBUG_PANIC_ON_BUG, /* Set if we should panic on BUG */ | |
136 | CTL_DEBUG_PATH, /* Dump log location */ | |
137 | CTL_DEBUG_DUMP, /* Dump debug buffer to file */ | |
138 | CTL_DEBUG_FORCE_BUG, /* Hook to force a BUG */ | |
139 | CTL_DEBUG_STACK_SIZE, /* Max observed stack size */ | |
140 | ||
141 | CTL_CONSOLE_RATELIMIT, /* Ratelimit console messages */ | |
142 | CTL_CONSOLE_MAX_DELAY_CS, /* Max delay which we skip messages */ | |
143 | CTL_CONSOLE_MIN_DELAY_CS, /* Init delay which we skip messages */ | |
144 | CTL_CONSOLE_BACKOFF, /* Delay increase factor */ | |
145 | ||
146 | CTL_VM_MINFREE, /* Minimum free memory threshold */ | |
147 | CTL_VM_DESFREE, /* Desired free memory threshold */ | |
148 | CTL_VM_LOTSFREE, /* Lots of free memory threshold */ | |
149 | CTL_VM_NEEDFREE, /* Need free memory deficit */ | |
150 | CTL_VM_SWAPFS_MINFREE, /* Minimum swapfs memory */ | |
36b313da | 151 | CTL_VM_SWAPFS_RESERVE, /* Reserved swapfs memory */ |
4ab13d3b BB |
152 | CTL_VM_AVAILRMEM, /* Easily available memory */ |
153 | CTL_VM_FREEMEM, /* Free memory */ | |
154 | CTL_VM_PHYSMEM, /* Total physical memory */ | |
9ab1ac14 | 155 | |
57d1b188 | 156 | #ifdef DEBUG_KMEM |
36b313da BB |
157 | CTL_KMEM_KMEMUSED, /* Alloc'd kmem bytes */ |
158 | CTL_KMEM_KMEMMAX, /* Max alloc'd by kmem bytes */ | |
159 | CTL_KMEM_VMEMUSED, /* Alloc'd vmem bytes */ | |
160 | CTL_KMEM_VMEMMAX, /* Max alloc'd by vmem bytes */ | |
57d1b188 | 161 | #endif |
9ab1ac14 | 162 | |
36b313da BB |
163 | CTL_MUTEX_STATS, /* Global mutex statistics */ |
164 | CTL_MUTEX_STATS_PER, /* Per mutex statistics */ | |
165 | CTL_MUTEX_SPIN_MAX, /* Maximum mutex spin iterations */ | |
57d1b188 | 166 | }; |
57d86234 | 167 | #endif /* HAVE_CTL_UNNUMBERED */ |
57d1b188 | 168 | |
169 | static int | |
170 | proc_copyin_string(char *kbuffer, int kbuffer_size, | |
171 | const char *ubuffer, int ubuffer_size) | |
172 | { | |
173 | int size; | |
174 | ||
175 | if (ubuffer_size > kbuffer_size) | |
176 | return -EOVERFLOW; | |
177 | ||
178 | if (copy_from_user((void *)kbuffer, (void *)ubuffer, ubuffer_size)) | |
179 | return -EFAULT; | |
180 | ||
181 | /* strip trailing whitespace */ | |
182 | size = strnlen(kbuffer, ubuffer_size); | |
183 | while (size-- >= 0) | |
184 | if (!isspace(kbuffer[size])) | |
185 | break; | |
186 | ||
187 | /* empty string */ | |
188 | if (size < 0) | |
189 | return -EINVAL; | |
190 | ||
191 | /* no space to terminate */ | |
192 | if (size == kbuffer_size) | |
193 | return -EOVERFLOW; | |
194 | ||
195 | kbuffer[size + 1] = 0; | |
196 | return 0; | |
197 | } | |
198 | ||
199 | static int | |
200 | proc_copyout_string(char *ubuffer, int ubuffer_size, | |
201 | const char *kbuffer, char *append) | |
202 | { | |
203 | /* NB if 'append' != NULL, it's a single character to append to the | |
204 | * copied out string - usually "\n", for /proc entries and | |
205 | * (i.e. a terminating zero byte) for sysctl entries | |
206 | */ | |
207 | int size = MIN(strlen(kbuffer), ubuffer_size); | |
208 | ||
209 | if (copy_to_user(ubuffer, kbuffer, size)) | |
210 | return -EFAULT; | |
211 | ||
212 | if (append != NULL && size < ubuffer_size) { | |
213 | if (copy_to_user(ubuffer + size, append, 1)) | |
214 | return -EFAULT; | |
215 | ||
216 | size++; | |
217 | } | |
218 | ||
219 | return size; | |
220 | } | |
221 | ||
222 | static int | |
223 | proc_dobitmasks(struct ctl_table *table, int write, struct file *filp, | |
224 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
225 | { | |
226 | unsigned long *mask = table->data; | |
227 | int is_subsys = (mask == &spl_debug_subsys) ? 1 : 0; | |
228 | int is_printk = (mask == &spl_debug_printk) ? 1 : 0; | |
229 | int size = 512, rc; | |
230 | char *str; | |
231 | ENTRY; | |
232 | ||
233 | str = kmem_alloc(size, KM_SLEEP); | |
234 | if (str == NULL) | |
235 | RETURN(-ENOMEM); | |
236 | ||
237 | if (write) { | |
238 | rc = proc_copyin_string(str, size, buffer, *lenp); | |
239 | if (rc < 0) | |
240 | RETURN(rc); | |
241 | ||
242 | rc = spl_debug_str2mask(mask, str, is_subsys); | |
243 | /* Always print BUG/ASSERT to console, so keep this mask */ | |
244 | if (is_printk) | |
245 | *mask |= D_EMERG; | |
246 | ||
247 | *ppos += *lenp; | |
248 | } else { | |
249 | rc = spl_debug_mask2str(str, size, *mask, is_subsys); | |
250 | if (*ppos >= rc) | |
251 | rc = 0; | |
252 | else | |
253 | rc = proc_copyout_string(buffer, *lenp, | |
254 | str + *ppos, "\n"); | |
255 | if (rc >= 0) { | |
256 | *lenp = rc; | |
257 | *ppos += rc; | |
258 | } | |
259 | } | |
260 | ||
261 | kmem_free(str, size); | |
262 | RETURN(rc); | |
263 | } | |
264 | ||
265 | static int | |
266 | proc_debug_mb(struct ctl_table *table, int write, struct file *filp, | |
267 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
268 | { | |
269 | char str[32]; | |
270 | int rc, len; | |
271 | ENTRY; | |
272 | ||
273 | if (write) { | |
274 | rc = proc_copyin_string(str, sizeof(str), buffer, *lenp); | |
275 | if (rc < 0) | |
276 | RETURN(rc); | |
277 | ||
278 | rc = spl_debug_set_mb(simple_strtoul(str, NULL, 0)); | |
279 | *ppos += *lenp; | |
280 | } else { | |
281 | len = snprintf(str, sizeof(str), "%d", spl_debug_get_mb()); | |
282 | if (*ppos >= len) | |
283 | rc = 0; | |
284 | else | |
285 | rc = proc_copyout_string(buffer, *lenp, str + *ppos, "\n"); | |
286 | ||
287 | if (rc >= 0) { | |
288 | *lenp = rc; | |
289 | *ppos += rc; | |
290 | } | |
291 | } | |
292 | ||
293 | RETURN(rc); | |
294 | } | |
295 | ||
296 | static int | |
297 | proc_dump_kernel(struct ctl_table *table, int write, struct file *filp, | |
298 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
299 | { | |
300 | ENTRY; | |
301 | ||
302 | if (write) { | |
7fea96c0 | 303 | spl_debug_dumplog(0); |
57d1b188 | 304 | *ppos += *lenp; |
305 | } else { | |
306 | *lenp = 0; | |
307 | } | |
308 | ||
309 | RETURN(0); | |
310 | } | |
311 | ||
312 | static int | |
313 | proc_force_bug(struct ctl_table *table, int write, struct file *filp, | |
314 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
315 | { | |
316 | ENTRY; | |
317 | ||
318 | if (write) { | |
2fae1b3d | 319 | CERROR("Crashing due to forced SBUG\n"); |
320 | SBUG(); | |
57d1b188 | 321 | /* Unreachable */ |
322 | } else { | |
323 | *lenp = 0; | |
324 | } | |
325 | ||
326 | RETURN(0); | |
327 | } | |
328 | ||
329 | static int | |
330 | proc_console_max_delay_cs(struct ctl_table *table, int write, struct file *filp, | |
331 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
332 | { | |
333 | int rc, max_delay_cs; | |
334 | struct ctl_table dummy = *table; | |
335 | long d; | |
336 | ENTRY; | |
337 | ||
338 | dummy.data = &max_delay_cs; | |
339 | dummy.proc_handler = &proc_dointvec; | |
340 | ||
341 | if (write) { | |
342 | max_delay_cs = 0; | |
343 | rc = proc_dointvec(&dummy, write, filp, buffer, lenp, ppos); | |
344 | if (rc < 0) | |
345 | RETURN(rc); | |
346 | ||
347 | if (max_delay_cs <= 0) | |
348 | RETURN(-EINVAL); | |
349 | ||
350 | d = (max_delay_cs * HZ) / 100; | |
351 | if (d == 0 || d < spl_console_min_delay) | |
352 | RETURN(-EINVAL); | |
353 | ||
354 | spl_console_max_delay = d; | |
355 | } else { | |
356 | max_delay_cs = (spl_console_max_delay * 100) / HZ; | |
357 | rc = proc_dointvec(&dummy, write, filp, buffer, lenp, ppos); | |
358 | } | |
359 | ||
360 | RETURN(rc); | |
361 | } | |
362 | ||
363 | static int | |
364 | proc_console_min_delay_cs(struct ctl_table *table, int write, struct file *filp, | |
365 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
366 | { | |
367 | int rc, min_delay_cs; | |
368 | struct ctl_table dummy = *table; | |
369 | long d; | |
370 | ENTRY; | |
371 | ||
372 | dummy.data = &min_delay_cs; | |
373 | dummy.proc_handler = &proc_dointvec; | |
374 | ||
375 | if (write) { | |
376 | min_delay_cs = 0; | |
377 | rc = proc_dointvec(&dummy, write, filp, buffer, lenp, ppos); | |
378 | if (rc < 0) | |
379 | RETURN(rc); | |
380 | ||
381 | if (min_delay_cs <= 0) | |
382 | RETURN(-EINVAL); | |
383 | ||
384 | d = (min_delay_cs * HZ) / 100; | |
385 | if (d == 0 || d > spl_console_max_delay) | |
386 | RETURN(-EINVAL); | |
387 | ||
388 | spl_console_min_delay = d; | |
389 | } else { | |
390 | min_delay_cs = (spl_console_min_delay * 100) / HZ; | |
391 | rc = proc_dointvec(&dummy, write, filp, buffer, lenp, ppos); | |
392 | } | |
393 | ||
394 | RETURN(rc); | |
395 | } | |
396 | ||
397 | static int | |
398 | proc_console_backoff(struct ctl_table *table, int write, struct file *filp, | |
399 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
400 | { | |
401 | int rc, backoff; | |
402 | struct ctl_table dummy = *table; | |
403 | ENTRY; | |
404 | ||
405 | dummy.data = &backoff; | |
406 | dummy.proc_handler = &proc_dointvec; | |
407 | ||
408 | if (write) { | |
409 | backoff = 0; | |
410 | rc = proc_dointvec(&dummy, write, filp, buffer, lenp, ppos); | |
411 | if (rc < 0) | |
412 | RETURN(rc); | |
413 | ||
414 | if (backoff <= 0) | |
415 | RETURN(-EINVAL); | |
416 | ||
417 | spl_console_backoff = backoff; | |
418 | } else { | |
419 | backoff = spl_console_backoff; | |
420 | rc = proc_dointvec(&dummy, write, filp, buffer, lenp, ppos); | |
421 | } | |
422 | ||
423 | RETURN(rc); | |
424 | } | |
425 | ||
c6dc93d6 | 426 | #ifdef DEBUG_KMEM |
57d1b188 | 427 | static int |
428 | proc_doatomic64(struct ctl_table *table, int write, struct file *filp, | |
429 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
430 | { | |
431 | int rc = 0; | |
432 | unsigned long min = 0, max = ~0, val; | |
433 | struct ctl_table dummy = *table; | |
434 | ENTRY; | |
435 | ||
436 | dummy.data = &val; | |
437 | dummy.proc_handler = &proc_dointvec; | |
438 | dummy.extra1 = &min; | |
439 | dummy.extra2 = &max; | |
440 | ||
441 | if (write) { | |
442 | *ppos += *lenp; | |
443 | } else { | |
550f1705 | 444 | val = atomic64_read((atomic64_t *)table->data); |
57d1b188 | 445 | rc = proc_doulongvec_minmax(&dummy, write, filp, |
446 | buffer, lenp, ppos); | |
447 | } | |
448 | ||
449 | RETURN(rc); | |
450 | } | |
c6dc93d6 | 451 | #endif /* DEBUG_KMEM */ |
57d1b188 | 452 | |
453 | static int | |
454 | proc_dohostid(struct ctl_table *table, int write, struct file *filp, | |
455 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
456 | { | |
457 | int len, rc = 0; | |
937879f1 | 458 | int32_t val; |
57d1b188 | 459 | char *end, str[32]; |
460 | ENTRY; | |
461 | ||
462 | if (write) { | |
463 | /* We can't use proc_doulongvec_minmax() in the write | |
464 | * case hear because hostid while a hex value has no | |
465 | * leading 0x which confuses the helper function. */ | |
466 | rc = proc_copyin_string(str, sizeof(str), buffer, *lenp); | |
467 | if (rc < 0) | |
468 | RETURN(rc); | |
469 | ||
937879f1 | 470 | val = simple_strtol(str, &end, 16); |
57d1b188 | 471 | if (str == end) |
472 | RETURN(-EINVAL); | |
473 | ||
937879f1 | 474 | spl_hostid = (long)val; |
99639e4a BB |
475 | (void)snprintf(hw_serial, HW_HOSTID_LEN-1, "%u", |
476 | (val >= 0) ? val : -val); | |
57d1b188 | 477 | *ppos += *lenp; |
478 | } else { | |
479 | len = snprintf(str, sizeof(str), "%lx", spl_hostid); | |
480 | if (*ppos >= len) | |
481 | rc = 0; | |
482 | else | |
483 | rc = proc_copyout_string(buffer, *lenp, str + *ppos, "\n"); | |
484 | ||
485 | if (rc >= 0) { | |
486 | *lenp = rc; | |
487 | *ppos += rc; | |
488 | } | |
489 | } | |
490 | ||
491 | RETURN(rc); | |
492 | } | |
493 | ||
d1ff2312 BB |
494 | #ifndef HAVE_KALLSYMS_LOOKUP_NAME |
495 | static int | |
496 | proc_dokallsyms_lookup_name(struct ctl_table *table, int write, | |
497 | struct file *filp, void __user *buffer, | |
498 | size_t *lenp, loff_t *ppos) { | |
499 | int len, rc = 0; | |
500 | char *end, str[32]; | |
501 | ENTRY; | |
502 | ||
503 | if (write) { | |
504 | /* This may only be set once at module load time */ | |
505 | if (spl_kallsyms_lookup_name_fn) | |
506 | RETURN(-EEXIST); | |
507 | ||
508 | /* We can't use proc_doulongvec_minmax() in the write | |
509 | * case hear because the address while a hex value has no | |
510 | * leading 0x which confuses the helper function. */ | |
511 | rc = proc_copyin_string(str, sizeof(str), buffer, *lenp); | |
512 | if (rc < 0) | |
513 | RETURN(rc); | |
514 | ||
515 | spl_kallsyms_lookup_name_fn = | |
516 | (kallsyms_lookup_name_t)simple_strtoul(str, &end, 16); | |
517 | if (str == end) | |
518 | RETURN(-EINVAL); | |
519 | ||
520 | *ppos += *lenp; | |
521 | } else { | |
522 | len = snprintf(str, sizeof(str), "%lx", | |
523 | (unsigned long)spl_kallsyms_lookup_name_fn); | |
524 | if (*ppos >= len) | |
525 | rc = 0; | |
526 | else | |
527 | rc = proc_copyout_string(buffer,*lenp,str+*ppos,"\n"); | |
528 | ||
529 | if (rc >= 0) { | |
530 | *lenp = rc; | |
531 | *ppos += rc; | |
532 | } | |
533 | } | |
534 | ||
535 | RETURN(rc); | |
536 | } | |
537 | #endif /* HAVE_KALLSYMS_LOOKUP_NAME */ | |
538 | ||
4ab13d3b BB |
539 | static int |
540 | proc_doavailrmem(struct ctl_table *table, int write, struct file *filp, | |
541 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
542 | { | |
543 | int len, rc = 0; | |
544 | char str[32]; | |
545 | ENTRY; | |
546 | ||
547 | if (write) { | |
548 | *ppos += *lenp; | |
549 | } else { | |
550 | len = snprintf(str, sizeof(str), "%lu", (unsigned long)availrmem); | |
551 | if (*ppos >= len) | |
552 | rc = 0; | |
553 | else | |
554 | rc = proc_copyout_string(buffer, *lenp, str + *ppos, "\n"); | |
555 | ||
556 | if (rc >= 0) { | |
557 | *lenp = rc; | |
558 | *ppos += rc; | |
559 | } | |
560 | } | |
561 | ||
562 | RETURN(rc); | |
563 | } | |
564 | ||
565 | static int | |
566 | proc_dofreemem(struct ctl_table *table, int write, struct file *filp, | |
567 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
568 | { | |
569 | int len, rc = 0; | |
570 | char str[32]; | |
571 | ENTRY; | |
572 | ||
573 | if (write) { | |
574 | *ppos += *lenp; | |
575 | } else { | |
576 | len = snprintf(str, sizeof(str), "%lu", (unsigned long)freemem); | |
577 | if (*ppos >= len) | |
578 | rc = 0; | |
579 | else | |
580 | rc = proc_copyout_string(buffer, *lenp, str + *ppos, "\n"); | |
581 | ||
582 | if (rc >= 0) { | |
583 | *lenp = rc; | |
584 | *ppos += rc; | |
585 | } | |
586 | } | |
587 | ||
588 | RETURN(rc); | |
589 | } | |
590 | ||
9ab1ac14 | 591 | #ifdef DEBUG_MUTEX |
592 | static void | |
593 | mutex_seq_show_headers(struct seq_file *f) | |
594 | { | |
595 | seq_printf(f, "%-36s %-4s %-16s\t" | |
596 | "e_tot\te_nh\te_sp\te_sl\tte_tot\tte_nh\n", | |
597 | "name", "type", "owner"); | |
598 | } | |
599 | ||
600 | static int | |
601 | mutex_seq_show(struct seq_file *f, void *p) | |
602 | { | |
603 | kmutex_t *mp = p; | |
604 | char t = 'X'; | |
605 | int i; | |
606 | ||
607 | ASSERT(mp->km_magic == KM_MAGIC); | |
608 | ||
609 | switch (mp->km_type) { | |
610 | case MUTEX_DEFAULT: t = 'D'; break; | |
611 | case MUTEX_SPIN: t = 'S'; break; | |
612 | case MUTEX_ADAPTIVE: t = 'A'; break; | |
613 | default: | |
614 | SBUG(); | |
615 | } | |
616 | seq_printf(f, "%-36s %c ", mp->km_name, t); | |
617 | if (mp->km_owner) | |
618 | seq_printf(f, "%p\t", mp->km_owner); | |
619 | else | |
620 | seq_printf(f, "%-16s\t", "<not held>"); | |
621 | ||
622 | for (i = 0; i < MUTEX_STATS_SIZE; i++) | |
623 | seq_printf(f, "%d%c", mp->km_stats[i], | |
624 | (i + 1 == MUTEX_STATS_SIZE) ? '\n' : '\t'); | |
625 | ||
626 | return 0; | |
627 | } | |
628 | ||
629 | static void * | |
630 | mutex_seq_start(struct seq_file *f, loff_t *pos) | |
631 | { | |
632 | struct list_head *p; | |
633 | loff_t n = *pos; | |
634 | ENTRY; | |
635 | ||
404992e3 | 636 | spin_lock(&mutex_stats_lock); |
9ab1ac14 | 637 | if (!n) |
638 | mutex_seq_show_headers(f); | |
639 | ||
640 | p = mutex_stats_list.next; | |
641 | while (n--) { | |
642 | p = p->next; | |
643 | if (p == &mutex_stats_list) | |
644 | RETURN(NULL); | |
645 | } | |
646 | ||
647 | RETURN(list_entry(p, kmutex_t, km_list)); | |
648 | } | |
649 | ||
650 | static void * | |
651 | mutex_seq_next(struct seq_file *f, void *p, loff_t *pos) | |
652 | { | |
653 | kmutex_t *mp = p; | |
654 | ENTRY; | |
655 | ||
656 | ++*pos; | |
657 | RETURN((mp->km_list.next == &mutex_stats_list) ? | |
658 | NULL : list_entry(mp->km_list.next, kmutex_t, km_list)); | |
659 | } | |
660 | ||
661 | static void | |
662 | mutex_seq_stop(struct seq_file *f, void *v) | |
663 | { | |
404992e3 | 664 | spin_unlock(&mutex_stats_lock); |
9ab1ac14 | 665 | } |
666 | ||
667 | static struct seq_operations mutex_seq_ops = { | |
668 | .show = mutex_seq_show, | |
669 | .start = mutex_seq_start, | |
670 | .next = mutex_seq_next, | |
671 | .stop = mutex_seq_stop, | |
672 | }; | |
673 | ||
674 | static int | |
675 | proc_mutex_open(struct inode *inode, struct file *filp) | |
676 | { | |
677 | return seq_open(filp, &mutex_seq_ops); | |
678 | } | |
679 | ||
680 | static struct file_operations proc_mutex_operations = { | |
681 | .open = proc_mutex_open, | |
682 | .read = seq_read, | |
683 | .llseek = seq_lseek, | |
684 | .release = seq_release, | |
685 | }; | |
686 | #endif /* DEBUG_MUTEX */ | |
687 | ||
ff449ac4 | 688 | #ifdef DEBUG_KMEM |
689 | static void | |
690 | slab_seq_show_headers(struct seq_file *f) | |
691 | { | |
692 | seq_printf(f, "%-36s\n", "name"); | |
693 | } | |
694 | ||
695 | static int | |
696 | slab_seq_show(struct seq_file *f, void *p) | |
697 | { | |
698 | spl_kmem_cache_t *skc = p; | |
699 | ||
700 | ASSERT(skc->skc_magic == SKC_MAGIC); | |
701 | ||
702 | spin_lock(&skc->skc_lock); | |
703 | seq_printf(f, "%-36s ", skc->skc_name); | |
a1502d76 | 704 | seq_printf(f, "%u %u %u - %lu %lu %lu - %lu %lu %lu - %lu %lu %lu\n", |
ff449ac4 | 705 | (unsigned)skc->skc_obj_size, |
a1502d76 | 706 | (unsigned)skc->skc_slab_objs, |
ff449ac4 | 707 | (unsigned)skc->skc_slab_size, |
ff449ac4 | 708 | (long unsigned)skc->skc_slab_fail, |
709 | (long unsigned)skc->skc_slab_create, | |
710 | (long unsigned)skc->skc_slab_destroy, | |
711 | (long unsigned)skc->skc_slab_total, | |
712 | (long unsigned)skc->skc_slab_alloc, | |
713 | (long unsigned)skc->skc_slab_max, | |
714 | (long unsigned)skc->skc_obj_total, | |
715 | (long unsigned)skc->skc_obj_alloc, | |
a1502d76 | 716 | (long unsigned)skc->skc_obj_max); |
ff449ac4 | 717 | |
718 | spin_unlock(&skc->skc_lock); | |
719 | ||
720 | return 0; | |
721 | } | |
722 | ||
723 | static void * | |
724 | slab_seq_start(struct seq_file *f, loff_t *pos) | |
725 | { | |
726 | struct list_head *p; | |
727 | loff_t n = *pos; | |
728 | ENTRY; | |
729 | ||
730 | down_read(&spl_kmem_cache_sem); | |
731 | if (!n) | |
732 | slab_seq_show_headers(f); | |
733 | ||
734 | p = spl_kmem_cache_list.next; | |
735 | while (n--) { | |
736 | p = p->next; | |
737 | if (p == &spl_kmem_cache_list) | |
738 | RETURN(NULL); | |
739 | } | |
740 | ||
741 | RETURN(list_entry(p, spl_kmem_cache_t, skc_list)); | |
742 | } | |
743 | ||
744 | static void * | |
745 | slab_seq_next(struct seq_file *f, void *p, loff_t *pos) | |
746 | { | |
747 | spl_kmem_cache_t *skc = p; | |
748 | ENTRY; | |
749 | ||
750 | ++*pos; | |
751 | RETURN((skc->skc_list.next == &spl_kmem_cache_list) ? | |
752 | NULL : list_entry(skc->skc_list.next, spl_kmem_cache_t, skc_list)); | |
753 | } | |
754 | ||
755 | static void | |
756 | slab_seq_stop(struct seq_file *f, void *v) | |
757 | { | |
758 | up_read(&spl_kmem_cache_sem); | |
759 | } | |
760 | ||
761 | static struct seq_operations slab_seq_ops = { | |
762 | .show = slab_seq_show, | |
763 | .start = slab_seq_start, | |
764 | .next = slab_seq_next, | |
765 | .stop = slab_seq_stop, | |
766 | }; | |
767 | ||
768 | static int | |
769 | proc_slab_open(struct inode *inode, struct file *filp) | |
770 | { | |
771 | return seq_open(filp, &slab_seq_ops); | |
772 | } | |
773 | ||
774 | static struct file_operations proc_slab_operations = { | |
775 | .open = proc_slab_open, | |
776 | .read = seq_read, | |
777 | .llseek = seq_lseek, | |
778 | .release = seq_release, | |
779 | }; | |
780 | #endif /* DEBUG_KMEM */ | |
781 | ||
9ab1ac14 | 782 | static struct ctl_table spl_debug_table[] = { |
57d1b188 | 783 | { |
784 | .ctl_name = CTL_DEBUG_SUBSYS, | |
9ab1ac14 | 785 | .procname = "subsystem", |
57d1b188 | 786 | .data = &spl_debug_subsys, |
787 | .maxlen = sizeof(unsigned long), | |
788 | .mode = 0644, | |
789 | .proc_handler = &proc_dobitmasks | |
790 | }, | |
791 | { | |
792 | .ctl_name = CTL_DEBUG_MASK, | |
9ab1ac14 | 793 | .procname = "mask", |
57d1b188 | 794 | .data = &spl_debug_mask, |
795 | .maxlen = sizeof(unsigned long), | |
796 | .mode = 0644, | |
797 | .proc_handler = &proc_dobitmasks | |
798 | }, | |
799 | { | |
800 | .ctl_name = CTL_DEBUG_PRINTK, | |
9ab1ac14 | 801 | .procname = "printk", |
57d1b188 | 802 | .data = &spl_debug_printk, |
803 | .maxlen = sizeof(unsigned long), | |
804 | .mode = 0644, | |
805 | .proc_handler = &proc_dobitmasks | |
806 | }, | |
807 | { | |
808 | .ctl_name = CTL_DEBUG_MB, | |
9ab1ac14 | 809 | .procname = "mb", |
57d1b188 | 810 | .mode = 0644, |
811 | .proc_handler = &proc_debug_mb, | |
812 | }, | |
813 | { | |
814 | .ctl_name = CTL_DEBUG_BINARY, | |
9ab1ac14 | 815 | .procname = "binary", |
57d1b188 | 816 | .data = &spl_debug_binary, |
817 | .maxlen = sizeof(int), | |
818 | .mode = 0644, | |
819 | .proc_handler = &proc_dointvec, | |
820 | }, | |
821 | { | |
822 | .ctl_name = CTL_DEBUG_CATASTROPHE, | |
823 | .procname = "catastrophe", | |
824 | .data = &spl_debug_catastrophe, | |
825 | .maxlen = sizeof(int), | |
826 | .mode = 0444, | |
827 | .proc_handler = &proc_dointvec, | |
828 | }, | |
829 | { | |
830 | .ctl_name = CTL_DEBUG_PANIC_ON_BUG, | |
831 | .procname = "panic_on_bug", | |
832 | .data = &spl_debug_panic_on_bug, | |
833 | .maxlen = sizeof(int), | |
834 | .mode = 0644, | |
835 | .proc_handler = &proc_dointvec | |
836 | }, | |
837 | { | |
838 | .ctl_name = CTL_DEBUG_PATH, | |
9ab1ac14 | 839 | .procname = "path", |
57d1b188 | 840 | .data = spl_debug_file_path, |
841 | .maxlen = sizeof(spl_debug_file_path), | |
842 | .mode = 0644, | |
843 | .proc_handler = &proc_dostring, | |
844 | }, | |
845 | { | |
846 | .ctl_name = CTL_DEBUG_DUMP, | |
9ab1ac14 | 847 | .procname = "dump", |
57d1b188 | 848 | .mode = 0200, |
849 | .proc_handler = &proc_dump_kernel, | |
850 | }, | |
851 | { .ctl_name = CTL_DEBUG_FORCE_BUG, | |
852 | .procname = "force_bug", | |
853 | .mode = 0200, | |
854 | .proc_handler = &proc_force_bug, | |
855 | }, | |
856 | { | |
857 | .ctl_name = CTL_CONSOLE_RATELIMIT, | |
858 | .procname = "console_ratelimit", | |
859 | .data = &spl_console_ratelimit, | |
860 | .maxlen = sizeof(int), | |
861 | .mode = 0644, | |
862 | .proc_handler = &proc_dointvec, | |
863 | }, | |
864 | { | |
865 | .ctl_name = CTL_CONSOLE_MAX_DELAY_CS, | |
866 | .procname = "console_max_delay_centisecs", | |
867 | .maxlen = sizeof(int), | |
868 | .mode = 0644, | |
869 | .proc_handler = &proc_console_max_delay_cs, | |
870 | }, | |
871 | { | |
872 | .ctl_name = CTL_CONSOLE_MIN_DELAY_CS, | |
873 | .procname = "console_min_delay_centisecs", | |
874 | .maxlen = sizeof(int), | |
875 | .mode = 0644, | |
876 | .proc_handler = &proc_console_min_delay_cs, | |
877 | }, | |
878 | { | |
879 | .ctl_name = CTL_CONSOLE_BACKOFF, | |
880 | .procname = "console_backoff", | |
881 | .maxlen = sizeof(int), | |
882 | .mode = 0644, | |
883 | .proc_handler = &proc_console_backoff, | |
884 | }, | |
885 | { | |
9ab1ac14 | 886 | .ctl_name = CTL_DEBUG_STACK_SIZE, |
57d1b188 | 887 | .procname = "stack_max", |
888 | .data = &spl_debug_stack, | |
889 | .maxlen = sizeof(int), | |
890 | .mode = 0444, | |
891 | .proc_handler = &proc_dointvec, | |
892 | }, | |
9ab1ac14 | 893 | {0}, |
894 | }; | |
895 | ||
36b313da BB |
896 | static struct ctl_table spl_vm_table[] = { |
897 | { | |
898 | .ctl_name = CTL_VM_MINFREE, | |
899 | .procname = "minfree", | |
900 | .data = &minfree, | |
901 | .maxlen = sizeof(int), | |
902 | .mode = 0644, | |
903 | .proc_handler = &proc_dointvec, | |
904 | }, | |
905 | { | |
906 | .ctl_name = CTL_VM_DESFREE, | |
907 | .procname = "desfree", | |
908 | .data = &desfree, | |
909 | .maxlen = sizeof(int), | |
910 | .mode = 0644, | |
911 | .proc_handler = &proc_dointvec, | |
912 | }, | |
913 | { | |
914 | .ctl_name = CTL_VM_LOTSFREE, | |
915 | .procname = "lotsfree", | |
916 | .data = &lotsfree, | |
917 | .maxlen = sizeof(int), | |
918 | .mode = 0644, | |
919 | .proc_handler = &proc_dointvec, | |
920 | }, | |
921 | { | |
922 | .ctl_name = CTL_VM_NEEDFREE, | |
923 | .procname = "needfree", | |
924 | .data = &needfree, | |
925 | .maxlen = sizeof(int), | |
926 | .mode = 0444, | |
927 | .proc_handler = &proc_dointvec, | |
928 | }, | |
929 | { | |
930 | .ctl_name = CTL_VM_SWAPFS_MINFREE, | |
931 | .procname = "swapfs_minfree", | |
932 | .data = &swapfs_minfree, | |
933 | .maxlen = sizeof(int), | |
934 | .mode = 0644, | |
935 | .proc_handler = &proc_dointvec, | |
936 | }, | |
36b313da BB |
937 | { |
938 | .ctl_name = CTL_VM_SWAPFS_RESERVE, | |
939 | .procname = "swapfs_reserve", | |
940 | .data = &swapfs_reserve, | |
941 | .maxlen = sizeof(int), | |
942 | .mode = 0644, | |
943 | .proc_handler = &proc_dointvec, | |
944 | }, | |
945 | { | |
946 | .ctl_name = CTL_VM_AVAILRMEM, | |
947 | .procname = "availrmem", | |
4ab13d3b BB |
948 | .mode = 0444, |
949 | .proc_handler = &proc_doavailrmem, | |
950 | }, | |
951 | { | |
952 | .ctl_name = CTL_VM_FREEMEM, | |
953 | .procname = "freemem", | |
954 | .data = (void *)2, | |
955 | .maxlen = sizeof(int), | |
956 | .mode = 0444, | |
957 | .proc_handler = &proc_dofreemem, | |
958 | }, | |
959 | { | |
960 | .ctl_name = CTL_VM_PHYSMEM, | |
961 | .procname = "physmem", | |
962 | .data = &physmem, | |
36b313da BB |
963 | .maxlen = sizeof(int), |
964 | .mode = 0444, | |
965 | .proc_handler = &proc_dointvec, | |
966 | }, | |
967 | {0}, | |
968 | }; | |
969 | ||
9ab1ac14 | 970 | #ifdef DEBUG_MUTEX |
971 | static struct ctl_table spl_mutex_table[] = { | |
972 | { | |
973 | .ctl_name = CTL_MUTEX_STATS, | |
974 | .procname = "stats", | |
975 | .data = &mutex_stats, | |
976 | .maxlen = sizeof(int) * MUTEX_STATS_SIZE, | |
977 | .mode = 0444, | |
978 | .proc_handler = &proc_dointvec, | |
979 | }, | |
980 | { | |
981 | .ctl_name = CTL_MUTEX_SPIN_MAX, | |
982 | .procname = "spin_max", | |
983 | .data = &mutex_spin_max, | |
984 | .maxlen = sizeof(int), | |
985 | .mode = 0644, | |
986 | .proc_handler = &proc_dointvec, | |
987 | }, | |
988 | {0}, | |
989 | }; | |
990 | #endif /* DEBUG_MUTEX */ | |
991 | ||
57d1b188 | 992 | #ifdef DEBUG_KMEM |
9ab1ac14 | 993 | static struct ctl_table spl_kmem_table[] = { |
57d1b188 | 994 | { |
995 | .ctl_name = CTL_KMEM_KMEMUSED, | |
996 | .procname = "kmem_used", | |
997 | .data = &kmem_alloc_used, | |
998 | .maxlen = sizeof(atomic64_t), | |
999 | .mode = 0444, | |
1000 | .proc_handler = &proc_doatomic64, | |
1001 | }, | |
1002 | { | |
1003 | .ctl_name = CTL_KMEM_KMEMMAX, | |
1004 | .procname = "kmem_max", | |
1005 | .data = &kmem_alloc_max, | |
1006 | .maxlen = sizeof(unsigned long), | |
1007 | .extra1 = &table_min, | |
1008 | .extra2 = &table_max, | |
1009 | .mode = 0444, | |
1010 | .proc_handler = &proc_doulongvec_minmax, | |
1011 | }, | |
1012 | { | |
1013 | .ctl_name = CTL_KMEM_VMEMUSED, | |
1014 | .procname = "vmem_used", | |
1015 | .data = &vmem_alloc_used, | |
1016 | .maxlen = sizeof(atomic64_t), | |
1017 | .mode = 0444, | |
1018 | .proc_handler = &proc_doatomic64, | |
1019 | }, | |
1020 | { | |
1021 | .ctl_name = CTL_KMEM_VMEMMAX, | |
1022 | .procname = "vmem_max", | |
1023 | .data = &vmem_alloc_max, | |
1024 | .maxlen = sizeof(unsigned long), | |
1025 | .extra1 = &table_min, | |
1026 | .extra2 = &table_max, | |
1027 | .mode = 0444, | |
1028 | .proc_handler = &proc_doulongvec_minmax, | |
1029 | }, | |
9ab1ac14 | 1030 | {0}, |
1031 | }; | |
04a479f7 | 1032 | #endif /* DEBUG_KMEM */ |
1033 | ||
1034 | #ifdef DEBUG_KSTAT | |
1035 | static struct ctl_table spl_kstat_table[] = { | |
1036 | {0}, | |
1037 | }; | |
1038 | #endif /* DEBUG_KSTAT */ | |
9ab1ac14 | 1039 | |
1040 | static struct ctl_table spl_table[] = { | |
1041 | /* NB No .strategy entries have been provided since | |
1042 | * sysctl(8) prefers to go via /proc for portability. | |
1043 | */ | |
1044 | { | |
1045 | .ctl_name = CTL_VERSION, | |
1046 | .procname = "version", | |
1047 | .data = spl_version, | |
1048 | .maxlen = sizeof(spl_version), | |
1049 | .mode = 0444, | |
1050 | .proc_handler = &proc_dostring, | |
1051 | }, | |
57d1b188 | 1052 | { |
1053 | .ctl_name = CTL_HOSTID, | |
1054 | .procname = "hostid", | |
1055 | .data = &spl_hostid, | |
1056 | .maxlen = sizeof(unsigned long), | |
1057 | .mode = 0644, | |
1058 | .proc_handler = &proc_dohostid, | |
1059 | }, | |
1060 | { | |
1061 | .ctl_name = CTL_HW_SERIAL, | |
1062 | .procname = "hw_serial", | |
937879f1 | 1063 | .data = hw_serial, |
1064 | .maxlen = sizeof(hw_serial), | |
57d1b188 | 1065 | .mode = 0444, |
1066 | .proc_handler = &proc_dostring, | |
1067 | }, | |
d1ff2312 BB |
1068 | #ifndef HAVE_KALLSYMS_LOOKUP_NAME |
1069 | { | |
1070 | .ctl_name = CTL_KALLSYMS, | |
1071 | .procname = "kallsyms_lookup_name", | |
1072 | .data = &spl_kallsyms_lookup_name_fn, | |
1073 | .maxlen = sizeof(unsigned long), | |
1074 | .mode = 0644, | |
1075 | .proc_handler = &proc_dokallsyms_lookup_name, | |
1076 | }, | |
1077 | #endif | |
9ab1ac14 | 1078 | { |
1079 | .ctl_name = CTL_SPL_DEBUG, | |
1080 | .procname = "debug", | |
1081 | .mode = 0555, | |
1082 | .child = spl_debug_table, | |
1083 | }, | |
36b313da BB |
1084 | { |
1085 | .ctl_name = CTL_SPL_VM, | |
1086 | .procname = "vm", | |
1087 | .mode = 0555, | |
1088 | .child = spl_vm_table, | |
1089 | }, | |
9ab1ac14 | 1090 | #ifdef DEBUG_MUTEX |
1091 | { | |
1092 | .ctl_name = CTL_SPL_MUTEX, | |
1093 | .procname = "mutex", | |
1094 | .mode = 0555, | |
1095 | .child = spl_mutex_table, | |
1096 | }, | |
1097 | #endif | |
1098 | #ifdef DEBUG_KMEM | |
1099 | { | |
1100 | .ctl_name = CTL_SPL_KMEM, | |
1101 | .procname = "kmem", | |
1102 | .mode = 0555, | |
1103 | .child = spl_kmem_table, | |
1104 | }, | |
04a479f7 | 1105 | #endif |
1106 | #ifdef DEBUG_KSTAT | |
1107 | { | |
1108 | .ctl_name = CTL_SPL_KSTAT, | |
1109 | .procname = "kstat", | |
1110 | .mode = 0555, | |
1111 | .child = spl_kstat_table, | |
1112 | }, | |
9ab1ac14 | 1113 | #endif |
57d1b188 | 1114 | { 0 }, |
1115 | }; | |
1116 | ||
9ab1ac14 | 1117 | static struct ctl_table spl_dir[] = { |
57d1b188 | 1118 | { |
1119 | .ctl_name = CTL_SPL, | |
1120 | .procname = "spl", | |
1121 | .mode = 0555, | |
1122 | .child = spl_table, | |
1123 | }, | |
57d86234 | 1124 | { 0 } |
1125 | }; | |
1126 | ||
1127 | static struct ctl_table spl_root[] = { | |
1128 | { | |
1129 | .ctl_name = CTL_KERN, | |
1130 | .procname = "kernel", | |
1131 | .mode = 0555, | |
1132 | .child = spl_dir, | |
1133 | }, | |
1134 | { 0 } | |
57d1b188 | 1135 | }; |
1136 | ||
404992e3 | 1137 | static int |
1138 | proc_dir_entry_match(int len, const char *name, struct proc_dir_entry *de) | |
1139 | { | |
1140 | if (de->namelen != len) | |
1141 | return 0; | |
1142 | ||
1143 | return !memcmp(name, de->name, len); | |
1144 | } | |
1145 | ||
04a479f7 | 1146 | struct proc_dir_entry * |
404992e3 | 1147 | proc_dir_entry_find(struct proc_dir_entry *root, const char *str) |
1148 | { | |
1149 | struct proc_dir_entry *de; | |
1150 | ||
1151 | for (de = root->subdir; de; de = de->next) | |
1152 | if (proc_dir_entry_match(strlen(str), str, de)) | |
1153 | return de; | |
1154 | ||
1155 | return NULL; | |
1156 | } | |
1157 | ||
04a479f7 | 1158 | int |
1159 | proc_dir_entries(struct proc_dir_entry *root) | |
1160 | { | |
1161 | struct proc_dir_entry *de; | |
1162 | int i = 0; | |
1163 | ||
1164 | for (de = root->subdir; de; de = de->next) | |
1165 | i++; | |
1166 | ||
1167 | return i; | |
1168 | } | |
1169 | ||
57d1b188 | 1170 | int |
1171 | proc_init(void) | |
1172 | { | |
404992e3 | 1173 | int rc = 0; |
57d1b188 | 1174 | ENTRY; |
1175 | ||
1176 | #ifdef CONFIG_SYSCTL | |
57d86234 | 1177 | spl_header = spl_register_sysctl_table(spl_root, 0); |
57d1b188 | 1178 | if (spl_header == NULL) |
1179 | RETURN(-EUNATCH); | |
c30df9c8 | 1180 | #endif /* CONFIG_SYSCTL */ |
9ab1ac14 | 1181 | |
57d86234 | 1182 | #if defined(DEBUG_MUTEX) || defined(DEBUG_KMEM) || defined(DEBUG_KSTAT) |
c30df9c8 | 1183 | proc_spl = proc_mkdir("spl", NULL); |
1184 | if (proc_spl == NULL) | |
404992e3 | 1185 | GOTO(out, rc = -EUNATCH); |
1186 | ||
9ab1ac14 | 1187 | #ifdef DEBUG_MUTEX |
c30df9c8 | 1188 | proc_spl_mutex = proc_mkdir("mutex", proc_spl); |
1189 | if (proc_spl_mutex == NULL) | |
404992e3 | 1190 | GOTO(out, rc = -EUNATCH); |
1191 | ||
c30df9c8 | 1192 | proc_spl_mutex_stats = create_proc_entry("stats_per", 0444, |
1193 | proc_spl_mutex); | |
1194 | if (proc_spl_mutex_stats == NULL) | |
404992e3 | 1195 | GOTO(out, rc = -EUNATCH); |
1196 | ||
c30df9c8 | 1197 | proc_spl_mutex_stats->proc_fops = &proc_mutex_operations; |
9ab1ac14 | 1198 | #endif /* DEBUG_MUTEX */ |
04a479f7 | 1199 | |
1200 | #ifdef DEBUG_KMEM | |
c30df9c8 | 1201 | proc_spl_kmem = proc_mkdir("kmem", proc_spl); |
1202 | if (proc_spl_kmem == NULL) | |
1203 | GOTO(out, rc = -EUNATCH); | |
ff449ac4 | 1204 | |
1205 | proc_spl_kmem_slab = create_proc_entry("slab", 0444, proc_spl_kmem); | |
1206 | if (proc_spl_kmem_slab == NULL) | |
1207 | GOTO(out, rc = -EUNATCH); | |
1208 | ||
1209 | proc_spl_kmem_slab->proc_fops = &proc_slab_operations; | |
04a479f7 | 1210 | #endif /* DEBUG_KMEM */ |
1211 | ||
1212 | #ifdef DEBUG_KSTAT | |
c30df9c8 | 1213 | proc_spl_kstat = proc_mkdir("kstat", proc_spl); |
1214 | if (proc_spl_kstat == NULL) | |
1215 | GOTO(out, rc = -EUNATCH); | |
04a479f7 | 1216 | #endif /* DEBUG_KSTAT */ |
1217 | ||
404992e3 | 1218 | out: |
c30df9c8 | 1219 | if (rc) { |
1220 | remove_proc_entry("kstat", proc_spl); | |
ff449ac4 | 1221 | #ifdef DEBUG_KMEM |
1222 | remove_proc_entry("slab", proc_spl_kmem); | |
1223 | #endif | |
c30df9c8 | 1224 | remove_proc_entry("kmem", proc_spl); |
4afaaefa | 1225 | #ifdef DEBUG_MUTEX |
c30df9c8 | 1226 | remove_proc_entry("stats_per", proc_spl_mutex); |
4afaaefa | 1227 | #endif |
c30df9c8 | 1228 | remove_proc_entry("mutex", proc_spl); |
a02118a8 | 1229 | remove_proc_entry("spl", NULL); |
c30df9c8 | 1230 | #ifdef CONFIG_SYSCTL |
1231 | spl_unregister_sysctl_table(spl_header); | |
404992e3 | 1232 | #endif /* CONFIG_SYSCTL */ |
c30df9c8 | 1233 | } |
1234 | #endif /* DEBUG_MUTEX || DEBUG_KMEM || DEBUG_KSTAT */ | |
1235 | ||
404992e3 | 1236 | RETURN(rc); |
57d1b188 | 1237 | } |
1238 | ||
1239 | void | |
1240 | proc_fini(void) | |
1241 | { | |
1242 | ENTRY; | |
1243 | ||
c30df9c8 | 1244 | #if defined(DEBUG_MUTEX) || defined(DEBUG_KMEM) || defined(DEBUG_KSTAT) |
1245 | remove_proc_entry("kstat", proc_spl); | |
ff449ac4 | 1246 | #ifdef DEBUG_KMEM |
1247 | remove_proc_entry("slab", proc_spl_kmem); | |
1248 | #endif | |
c30df9c8 | 1249 | remove_proc_entry("kmem", proc_spl); |
4afaaefa | 1250 | #ifdef DEBUG_MUTEX |
c30df9c8 | 1251 | remove_proc_entry("stats_per", proc_spl_mutex); |
4afaaefa | 1252 | #endif |
c30df9c8 | 1253 | remove_proc_entry("mutex", proc_spl); |
a02118a8 | 1254 | remove_proc_entry("spl", NULL); |
c30df9c8 | 1255 | #endif /* DEBUG_MUTEX || DEBUG_KMEM || DEBUG_KSTAT */ |
1256 | ||
57d1b188 | 1257 | #ifdef CONFIG_SYSCTL |
1258 | ASSERT(spl_header != NULL); | |
57d86234 | 1259 | spl_unregister_sysctl_table(spl_header); |
c30df9c8 | 1260 | #endif /* CONFIG_SYSCTL */ |
1261 | ||
57d1b188 | 1262 | EXIT; |
1263 | } |