diff options
author | Pekka Enberg <penberg@kernel.org> | 2011-01-09 04:05:53 -0500 |
---|---|---|
committer | Pekka Enberg <penberg@kernel.org> | 2011-01-09 04:05:53 -0500 |
commit | a45b0616e7ee9db4c1b2b9a4a79a974325fa9bf3 (patch) | |
tree | 661b2cc7b0117fc1bbec27fc196c059002b4698b /tools | |
parent | 3c0eee3fe6a3a1c745379547c7e7c904aa64f6d5 (diff) | |
parent | 8165984acf825917437debae519209073c32a5a7 (diff) |
Merge branch 'slab/next' into for-linus
Diffstat (limited to 'tools')
-rw-r--r-- | tools/slub/slabinfo.c | 1364 |
1 files changed, 1364 insertions, 0 deletions
diff --git a/tools/slub/slabinfo.c b/tools/slub/slabinfo.c new file mode 100644 index 000000000000..516551c9f172 --- /dev/null +++ b/tools/slub/slabinfo.c | |||
@@ -0,0 +1,1364 @@ | |||
1 | /* | ||
2 | * Slabinfo: Tool to get reports about slabs | ||
3 | * | ||
4 | * (C) 2007 sgi, Christoph Lameter | ||
5 | * | ||
6 | * Compile by: | ||
7 | * | ||
8 | * gcc -o slabinfo slabinfo.c | ||
9 | */ | ||
10 | #include <stdio.h> | ||
11 | #include <stdlib.h> | ||
12 | #include <sys/types.h> | ||
13 | #include <dirent.h> | ||
14 | #include <strings.h> | ||
15 | #include <string.h> | ||
16 | #include <unistd.h> | ||
17 | #include <stdarg.h> | ||
18 | #include <getopt.h> | ||
19 | #include <regex.h> | ||
20 | #include <errno.h> | ||
21 | |||
22 | #define MAX_SLABS 500 | ||
23 | #define MAX_ALIASES 500 | ||
24 | #define MAX_NODES 1024 | ||
25 | |||
26 | struct slabinfo { | ||
27 | char *name; | ||
28 | int alias; | ||
29 | int refs; | ||
30 | int aliases, align, cache_dma, cpu_slabs, destroy_by_rcu; | ||
31 | int hwcache_align, object_size, objs_per_slab; | ||
32 | int sanity_checks, slab_size, store_user, trace; | ||
33 | int order, poison, reclaim_account, red_zone; | ||
34 | unsigned long partial, objects, slabs, objects_partial, objects_total; | ||
35 | unsigned long alloc_fastpath, alloc_slowpath; | ||
36 | unsigned long free_fastpath, free_slowpath; | ||
37 | unsigned long free_frozen, free_add_partial, free_remove_partial; | ||
38 | unsigned long alloc_from_partial, alloc_slab, free_slab, alloc_refill; | ||
39 | unsigned long cpuslab_flush, deactivate_full, deactivate_empty; | ||
40 | unsigned long deactivate_to_head, deactivate_to_tail; | ||
41 | unsigned long deactivate_remote_frees, order_fallback; | ||
42 | int numa[MAX_NODES]; | ||
43 | int numa_partial[MAX_NODES]; | ||
44 | } slabinfo[MAX_SLABS]; | ||
45 | |||
46 | struct aliasinfo { | ||
47 | char *name; | ||
48 | char *ref; | ||
49 | struct slabinfo *slab; | ||
50 | } aliasinfo[MAX_ALIASES]; | ||
51 | |||
52 | int slabs = 0; | ||
53 | int actual_slabs = 0; | ||
54 | int aliases = 0; | ||
55 | int alias_targets = 0; | ||
56 | int highest_node = 0; | ||
57 | |||
58 | char buffer[4096]; | ||
59 | |||
60 | int show_empty = 0; | ||
61 | int show_report = 0; | ||
62 | int show_alias = 0; | ||
63 | int show_slab = 0; | ||
64 | int skip_zero = 1; | ||
65 | int show_numa = 0; | ||
66 | int show_track = 0; | ||
67 | int show_first_alias = 0; | ||
68 | int validate = 0; | ||
69 | int shrink = 0; | ||
70 | int show_inverted = 0; | ||
71 | int show_single_ref = 0; | ||
72 | int show_totals = 0; | ||
73 | int sort_size = 0; | ||
74 | int sort_active = 0; | ||
75 | int set_debug = 0; | ||
76 | int show_ops = 0; | ||
77 | int show_activity = 0; | ||
78 | |||
79 | /* Debug options */ | ||
80 | int sanity = 0; | ||
81 | int redzone = 0; | ||
82 | int poison = 0; | ||
83 | int tracking = 0; | ||
84 | int tracing = 0; | ||
85 | |||
86 | int page_size; | ||
87 | |||
88 | regex_t pattern; | ||
89 | |||
90 | static void fatal(const char *x, ...) | ||
91 | { | ||
92 | va_list ap; | ||
93 | |||
94 | va_start(ap, x); | ||
95 | vfprintf(stderr, x, ap); | ||
96 | va_end(ap); | ||
97 | exit(EXIT_FAILURE); | ||
98 | } | ||
99 | |||
100 | static void usage(void) | ||
101 | { | ||
102 | printf("slabinfo 5/7/2007. (c) 2007 sgi.\n\n" | ||
103 | "slabinfo [-ahnpvtsz] [-d debugopts] [slab-regexp]\n" | ||
104 | "-a|--aliases Show aliases\n" | ||
105 | "-A|--activity Most active slabs first\n" | ||
106 | "-d<options>|--debug=<options> Set/Clear Debug options\n" | ||
107 | "-D|--display-active Switch line format to activity\n" | ||
108 | "-e|--empty Show empty slabs\n" | ||
109 | "-f|--first-alias Show first alias\n" | ||
110 | "-h|--help Show usage information\n" | ||
111 | "-i|--inverted Inverted list\n" | ||
112 | "-l|--slabs Show slabs\n" | ||
113 | "-n|--numa Show NUMA information\n" | ||
114 | "-o|--ops Show kmem_cache_ops\n" | ||
115 | "-s|--shrink Shrink slabs\n" | ||
116 | "-r|--report Detailed report on single slabs\n" | ||
117 | "-S|--Size Sort by size\n" | ||
118 | "-t|--tracking Show alloc/free information\n" | ||
119 | "-T|--Totals Show summary information\n" | ||
120 | "-v|--validate Validate slabs\n" | ||
121 | "-z|--zero Include empty slabs\n" | ||
122 | "-1|--1ref Single reference\n" | ||
123 | "\nValid debug options (FZPUT may be combined)\n" | ||
124 | "a / A Switch on all debug options (=FZUP)\n" | ||
125 | "- Switch off all debug options\n" | ||
126 | "f / F Sanity Checks (SLAB_DEBUG_FREE)\n" | ||
127 | "z / Z Redzoning\n" | ||
128 | "p / P Poisoning\n" | ||
129 | "u / U Tracking\n" | ||
130 | "t / T Tracing\n" | ||
131 | ); | ||
132 | } | ||
133 | |||
134 | static unsigned long read_obj(const char *name) | ||
135 | { | ||
136 | FILE *f = fopen(name, "r"); | ||
137 | |||
138 | if (!f) | ||
139 | buffer[0] = 0; | ||
140 | else { | ||
141 | if (!fgets(buffer, sizeof(buffer), f)) | ||
142 | buffer[0] = 0; | ||
143 | fclose(f); | ||
144 | if (buffer[strlen(buffer)] == '\n') | ||
145 | buffer[strlen(buffer)] = 0; | ||
146 | } | ||
147 | return strlen(buffer); | ||
148 | } | ||
149 | |||
150 | |||
151 | /* | ||
152 | * Get the contents of an attribute | ||
153 | */ | ||
154 | static unsigned long get_obj(const char *name) | ||
155 | { | ||
156 | if (!read_obj(name)) | ||
157 | return 0; | ||
158 | |||
159 | return atol(buffer); | ||
160 | } | ||
161 | |||
162 | static unsigned long get_obj_and_str(const char *name, char **x) | ||
163 | { | ||
164 | unsigned long result = 0; | ||
165 | char *p; | ||
166 | |||
167 | *x = NULL; | ||
168 | |||
169 | if (!read_obj(name)) { | ||
170 | x = NULL; | ||
171 | return 0; | ||
172 | } | ||
173 | result = strtoul(buffer, &p, 10); | ||
174 | while (*p == ' ') | ||
175 | p++; | ||
176 | if (*p) | ||
177 | *x = strdup(p); | ||
178 | return result; | ||
179 | } | ||
180 | |||
181 | static void set_obj(struct slabinfo *s, const char *name, int n) | ||
182 | { | ||
183 | char x[100]; | ||
184 | FILE *f; | ||
185 | |||
186 | snprintf(x, 100, "%s/%s", s->name, name); | ||
187 | f = fopen(x, "w"); | ||
188 | if (!f) | ||
189 | fatal("Cannot write to %s\n", x); | ||
190 | |||
191 | fprintf(f, "%d\n", n); | ||
192 | fclose(f); | ||
193 | } | ||
194 | |||
195 | static unsigned long read_slab_obj(struct slabinfo *s, const char *name) | ||
196 | { | ||
197 | char x[100]; | ||
198 | FILE *f; | ||
199 | size_t l; | ||
200 | |||
201 | snprintf(x, 100, "%s/%s", s->name, name); | ||
202 | f = fopen(x, "r"); | ||
203 | if (!f) { | ||
204 | buffer[0] = 0; | ||
205 | l = 0; | ||
206 | } else { | ||
207 | l = fread(buffer, 1, sizeof(buffer), f); | ||
208 | buffer[l] = 0; | ||
209 | fclose(f); | ||
210 | } | ||
211 | return l; | ||
212 | } | ||
213 | |||
214 | |||
215 | /* | ||
216 | * Put a size string together | ||
217 | */ | ||
218 | static int store_size(char *buffer, unsigned long value) | ||
219 | { | ||
220 | unsigned long divisor = 1; | ||
221 | char trailer = 0; | ||
222 | int n; | ||
223 | |||
224 | if (value > 1000000000UL) { | ||
225 | divisor = 100000000UL; | ||
226 | trailer = 'G'; | ||
227 | } else if (value > 1000000UL) { | ||
228 | divisor = 100000UL; | ||
229 | trailer = 'M'; | ||
230 | } else if (value > 1000UL) { | ||
231 | divisor = 100; | ||
232 | trailer = 'K'; | ||
233 | } | ||
234 | |||
235 | value /= divisor; | ||
236 | n = sprintf(buffer, "%ld",value); | ||
237 | if (trailer) { | ||
238 | buffer[n] = trailer; | ||
239 | n++; | ||
240 | buffer[n] = 0; | ||
241 | } | ||
242 | if (divisor != 1) { | ||
243 | memmove(buffer + n - 2, buffer + n - 3, 4); | ||
244 | buffer[n-2] = '.'; | ||
245 | n++; | ||
246 | } | ||
247 | return n; | ||
248 | } | ||
249 | |||
250 | static void decode_numa_list(int *numa, char *t) | ||
251 | { | ||
252 | int node; | ||
253 | int nr; | ||
254 | |||
255 | memset(numa, 0, MAX_NODES * sizeof(int)); | ||
256 | |||
257 | if (!t) | ||
258 | return; | ||
259 | |||
260 | while (*t == 'N') { | ||
261 | t++; | ||
262 | node = strtoul(t, &t, 10); | ||
263 | if (*t == '=') { | ||
264 | t++; | ||
265 | nr = strtoul(t, &t, 10); | ||
266 | numa[node] = nr; | ||
267 | if (node > highest_node) | ||
268 | highest_node = node; | ||
269 | } | ||
270 | while (*t == ' ') | ||
271 | t++; | ||
272 | } | ||
273 | } | ||
274 | |||
275 | static void slab_validate(struct slabinfo *s) | ||
276 | { | ||
277 | if (strcmp(s->name, "*") == 0) | ||
278 | return; | ||
279 | |||
280 | set_obj(s, "validate", 1); | ||
281 | } | ||
282 | |||
283 | static void slab_shrink(struct slabinfo *s) | ||
284 | { | ||
285 | if (strcmp(s->name, "*") == 0) | ||
286 | return; | ||
287 | |||
288 | set_obj(s, "shrink", 1); | ||
289 | } | ||
290 | |||
291 | int line = 0; | ||
292 | |||
293 | static void first_line(void) | ||
294 | { | ||
295 | if (show_activity) | ||
296 | printf("Name Objects Alloc Free %%Fast Fallb O\n"); | ||
297 | else | ||
298 | printf("Name Objects Objsize Space " | ||
299 | "Slabs/Part/Cpu O/S O %%Fr %%Ef Flg\n"); | ||
300 | } | ||
301 | |||
302 | /* | ||
303 | * Find the shortest alias of a slab | ||
304 | */ | ||
305 | static struct aliasinfo *find_one_alias(struct slabinfo *find) | ||
306 | { | ||
307 | struct aliasinfo *a; | ||
308 | struct aliasinfo *best = NULL; | ||
309 | |||
310 | for(a = aliasinfo;a < aliasinfo + aliases; a++) { | ||
311 | if (a->slab == find && | ||
312 | (!best || strlen(best->name) < strlen(a->name))) { | ||
313 | best = a; | ||
314 | if (strncmp(a->name,"kmall", 5) == 0) | ||
315 | return best; | ||
316 | } | ||
317 | } | ||
318 | return best; | ||
319 | } | ||
320 | |||
321 | static unsigned long slab_size(struct slabinfo *s) | ||
322 | { | ||
323 | return s->slabs * (page_size << s->order); | ||
324 | } | ||
325 | |||
326 | static unsigned long slab_activity(struct slabinfo *s) | ||
327 | { | ||
328 | return s->alloc_fastpath + s->free_fastpath + | ||
329 | s->alloc_slowpath + s->free_slowpath; | ||
330 | } | ||
331 | |||
332 | static void slab_numa(struct slabinfo *s, int mode) | ||
333 | { | ||
334 | int node; | ||
335 | |||
336 | if (strcmp(s->name, "*") == 0) | ||
337 | return; | ||
338 | |||
339 | if (!highest_node) { | ||
340 | printf("\n%s: No NUMA information available.\n", s->name); | ||
341 | return; | ||
342 | } | ||
343 | |||
344 | if (skip_zero && !s->slabs) | ||
345 | return; | ||
346 | |||
347 | if (!line) { | ||
348 | printf("\n%-21s:", mode ? "NUMA nodes" : "Slab"); | ||
349 | for(node = 0; node <= highest_node; node++) | ||
350 | printf(" %4d", node); | ||
351 | printf("\n----------------------"); | ||
352 | for(node = 0; node <= highest_node; node++) | ||
353 | printf("-----"); | ||
354 | printf("\n"); | ||
355 | } | ||
356 | printf("%-21s ", mode ? "All slabs" : s->name); | ||
357 | for(node = 0; node <= highest_node; node++) { | ||
358 | char b[20]; | ||
359 | |||
360 | store_size(b, s->numa[node]); | ||
361 | printf(" %4s", b); | ||
362 | } | ||
363 | printf("\n"); | ||
364 | if (mode) { | ||
365 | printf("%-21s ", "Partial slabs"); | ||
366 | for(node = 0; node <= highest_node; node++) { | ||
367 | char b[20]; | ||
368 | |||
369 | store_size(b, s->numa_partial[node]); | ||
370 | printf(" %4s", b); | ||
371 | } | ||
372 | printf("\n"); | ||
373 | } | ||
374 | line++; | ||
375 | } | ||
376 | |||
377 | static void show_tracking(struct slabinfo *s) | ||
378 | { | ||
379 | printf("\n%s: Kernel object allocation\n", s->name); | ||
380 | printf("-----------------------------------------------------------------------\n"); | ||
381 | if (read_slab_obj(s, "alloc_calls")) | ||
382 | printf(buffer); | ||
383 | else | ||
384 | printf("No Data\n"); | ||
385 | |||
386 | printf("\n%s: Kernel object freeing\n", s->name); | ||
387 | printf("------------------------------------------------------------------------\n"); | ||
388 | if (read_slab_obj(s, "free_calls")) | ||
389 | printf(buffer); | ||
390 | else | ||
391 | printf("No Data\n"); | ||
392 | |||
393 | } | ||
394 | |||
395 | static void ops(struct slabinfo *s) | ||
396 | { | ||
397 | if (strcmp(s->name, "*") == 0) | ||
398 | return; | ||
399 | |||
400 | if (read_slab_obj(s, "ops")) { | ||
401 | printf("\n%s: kmem_cache operations\n", s->name); | ||
402 | printf("--------------------------------------------\n"); | ||
403 | printf(buffer); | ||
404 | } else | ||
405 | printf("\n%s has no kmem_cache operations\n", s->name); | ||
406 | } | ||
407 | |||
408 | static const char *onoff(int x) | ||
409 | { | ||
410 | if (x) | ||
411 | return "On "; | ||
412 | return "Off"; | ||
413 | } | ||
414 | |||
415 | static void slab_stats(struct slabinfo *s) | ||
416 | { | ||
417 | unsigned long total_alloc; | ||
418 | unsigned long total_free; | ||
419 | unsigned long total; | ||
420 | |||
421 | if (!s->alloc_slab) | ||
422 | return; | ||
423 | |||
424 | total_alloc = s->alloc_fastpath + s->alloc_slowpath; | ||
425 | total_free = s->free_fastpath + s->free_slowpath; | ||
426 | |||
427 | if (!total_alloc) | ||
428 | return; | ||
429 | |||
430 | printf("\n"); | ||
431 | printf("Slab Perf Counter Alloc Free %%Al %%Fr\n"); | ||
432 | printf("--------------------------------------------------\n"); | ||
433 | printf("Fastpath %8lu %8lu %3lu %3lu\n", | ||
434 | s->alloc_fastpath, s->free_fastpath, | ||
435 | s->alloc_fastpath * 100 / total_alloc, | ||
436 | s->free_fastpath * 100 / total_free); | ||
437 | printf("Slowpath %8lu %8lu %3lu %3lu\n", | ||
438 | total_alloc - s->alloc_fastpath, s->free_slowpath, | ||
439 | (total_alloc - s->alloc_fastpath) * 100 / total_alloc, | ||
440 | s->free_slowpath * 100 / total_free); | ||
441 | printf("Page Alloc %8lu %8lu %3lu %3lu\n", | ||
442 | s->alloc_slab, s->free_slab, | ||
443 | s->alloc_slab * 100 / total_alloc, | ||
444 | s->free_slab * 100 / total_free); | ||
445 | printf("Add partial %8lu %8lu %3lu %3lu\n", | ||
446 | s->deactivate_to_head + s->deactivate_to_tail, | ||
447 | s->free_add_partial, | ||
448 | (s->deactivate_to_head + s->deactivate_to_tail) * 100 / total_alloc, | ||
449 | s->free_add_partial * 100 / total_free); | ||
450 | printf("Remove partial %8lu %8lu %3lu %3lu\n", | ||
451 | s->alloc_from_partial, s->free_remove_partial, | ||
452 | s->alloc_from_partial * 100 / total_alloc, | ||
453 | s->free_remove_partial * 100 / total_free); | ||
454 | |||
455 | printf("RemoteObj/SlabFrozen %8lu %8lu %3lu %3lu\n", | ||
456 | s->deactivate_remote_frees, s->free_frozen, | ||
457 | s->deactivate_remote_frees * 100 / total_alloc, | ||
458 | s->free_frozen * 100 / total_free); | ||
459 | |||
460 | printf("Total %8lu %8lu\n\n", total_alloc, total_free); | ||
461 | |||
462 | if (s->cpuslab_flush) | ||
463 | printf("Flushes %8lu\n", s->cpuslab_flush); | ||
464 | |||
465 | if (s->alloc_refill) | ||
466 | printf("Refill %8lu\n", s->alloc_refill); | ||
467 | |||
468 | total = s->deactivate_full + s->deactivate_empty + | ||
469 | s->deactivate_to_head + s->deactivate_to_tail; | ||
470 | |||
471 | if (total) | ||
472 | printf("Deactivate Full=%lu(%lu%%) Empty=%lu(%lu%%) " | ||
473 | "ToHead=%lu(%lu%%) ToTail=%lu(%lu%%)\n", | ||
474 | s->deactivate_full, (s->deactivate_full * 100) / total, | ||
475 | s->deactivate_empty, (s->deactivate_empty * 100) / total, | ||
476 | s->deactivate_to_head, (s->deactivate_to_head * 100) / total, | ||
477 | s->deactivate_to_tail, (s->deactivate_to_tail * 100) / total); | ||
478 | } | ||
479 | |||
480 | static void report(struct slabinfo *s) | ||
481 | { | ||
482 | if (strcmp(s->name, "*") == 0) | ||
483 | return; | ||
484 | |||
485 | printf("\nSlabcache: %-20s Aliases: %2d Order : %2d Objects: %lu\n", | ||
486 | s->name, s->aliases, s->order, s->objects); | ||
487 | if (s->hwcache_align) | ||
488 | printf("** Hardware cacheline aligned\n"); | ||
489 | if (s->cache_dma) | ||
490 | printf("** Memory is allocated in a special DMA zone\n"); | ||
491 | if (s->destroy_by_rcu) | ||
492 | printf("** Slabs are destroyed via RCU\n"); | ||
493 | if (s->reclaim_account) | ||
494 | printf("** Reclaim accounting active\n"); | ||
495 | |||
496 | printf("\nSizes (bytes) Slabs Debug Memory\n"); | ||
497 | printf("------------------------------------------------------------------------\n"); | ||
498 | printf("Object : %7d Total : %7ld Sanity Checks : %s Total: %7ld\n", | ||
499 | s->object_size, s->slabs, onoff(s->sanity_checks), | ||
500 | s->slabs * (page_size << s->order)); | ||
501 | printf("SlabObj: %7d Full : %7ld Redzoning : %s Used : %7ld\n", | ||
502 | s->slab_size, s->slabs - s->partial - s->cpu_slabs, | ||
503 | onoff(s->red_zone), s->objects * s->object_size); | ||
504 | printf("SlabSiz: %7d Partial: %7ld Poisoning : %s Loss : %7ld\n", | ||
505 | page_size << s->order, s->partial, onoff(s->poison), | ||
506 | s->slabs * (page_size << s->order) - s->objects * s->object_size); | ||
507 | printf("Loss : %7d CpuSlab: %7d Tracking : %s Lalig: %7ld\n", | ||
508 | s->slab_size - s->object_size, s->cpu_slabs, onoff(s->store_user), | ||
509 | (s->slab_size - s->object_size) * s->objects); | ||
510 | printf("Align : %7d Objects: %7d Tracing : %s Lpadd: %7ld\n", | ||
511 | s->align, s->objs_per_slab, onoff(s->trace), | ||
512 | ((page_size << s->order) - s->objs_per_slab * s->slab_size) * | ||
513 | s->slabs); | ||
514 | |||
515 | ops(s); | ||
516 | show_tracking(s); | ||
517 | slab_numa(s, 1); | ||
518 | slab_stats(s); | ||
519 | } | ||
520 | |||
521 | static void slabcache(struct slabinfo *s) | ||
522 | { | ||
523 | char size_str[20]; | ||
524 | char dist_str[40]; | ||
525 | char flags[20]; | ||
526 | char *p = flags; | ||
527 | |||
528 | if (strcmp(s->name, "*") == 0) | ||
529 | return; | ||
530 | |||
531 | if (actual_slabs == 1) { | ||
532 | report(s); | ||
533 | return; | ||
534 | } | ||
535 | |||
536 | if (skip_zero && !show_empty && !s->slabs) | ||
537 | return; | ||
538 | |||
539 | if (show_empty && s->slabs) | ||
540 | return; | ||
541 | |||
542 | store_size(size_str, slab_size(s)); | ||
543 | snprintf(dist_str, 40, "%lu/%lu/%d", s->slabs - s->cpu_slabs, | ||
544 | s->partial, s->cpu_slabs); | ||
545 | |||
546 | if (!line++) | ||
547 | first_line(); | ||
548 | |||
549 | if (s->aliases) | ||
550 | *p++ = '*'; | ||
551 | if (s->cache_dma) | ||
552 | *p++ = 'd'; | ||
553 | if (s->hwcache_align) | ||
554 | *p++ = 'A'; | ||
555 | if (s->poison) | ||
556 | *p++ = 'P'; | ||
557 | if (s->reclaim_account) | ||
558 | *p++ = 'a'; | ||
559 | if (s->red_zone) | ||
560 | *p++ = 'Z'; | ||
561 | if (s->sanity_checks) | ||
562 | *p++ = 'F'; | ||
563 | if (s->store_user) | ||
564 | *p++ = 'U'; | ||
565 | if (s->trace) | ||
566 | *p++ = 'T'; | ||
567 | |||
568 | *p = 0; | ||
569 | if (show_activity) { | ||
570 | unsigned long total_alloc; | ||
571 | unsigned long total_free; | ||
572 | |||
573 | total_alloc = s->alloc_fastpath + s->alloc_slowpath; | ||
574 | total_free = s->free_fastpath + s->free_slowpath; | ||
575 | |||
576 | printf("%-21s %8ld %10ld %10ld %3ld %3ld %5ld %1d\n", | ||
577 | s->name, s->objects, | ||
578 | total_alloc, total_free, | ||
579 | total_alloc ? (s->alloc_fastpath * 100 / total_alloc) : 0, | ||
580 | total_free ? (s->free_fastpath * 100 / total_free) : 0, | ||
581 | s->order_fallback, s->order); | ||
582 | } | ||
583 | else | ||
584 | printf("%-21s %8ld %7d %8s %14s %4d %1d %3ld %3ld %s\n", | ||
585 | s->name, s->objects, s->object_size, size_str, dist_str, | ||
586 | s->objs_per_slab, s->order, | ||
587 | s->slabs ? (s->partial * 100) / s->slabs : 100, | ||
588 | s->slabs ? (s->objects * s->object_size * 100) / | ||
589 | (s->slabs * (page_size << s->order)) : 100, | ||
590 | flags); | ||
591 | } | ||
592 | |||
593 | /* | ||
594 | * Analyze debug options. Return false if something is amiss. | ||
595 | */ | ||
596 | static int debug_opt_scan(char *opt) | ||
597 | { | ||
598 | if (!opt || !opt[0] || strcmp(opt, "-") == 0) | ||
599 | return 1; | ||
600 | |||
601 | if (strcasecmp(opt, "a") == 0) { | ||
602 | sanity = 1; | ||
603 | poison = 1; | ||
604 | redzone = 1; | ||
605 | tracking = 1; | ||
606 | return 1; | ||
607 | } | ||
608 | |||
609 | for ( ; *opt; opt++) | ||
610 | switch (*opt) { | ||
611 | case 'F' : case 'f': | ||
612 | if (sanity) | ||
613 | return 0; | ||
614 | sanity = 1; | ||
615 | break; | ||
616 | case 'P' : case 'p': | ||
617 | if (poison) | ||
618 | return 0; | ||
619 | poison = 1; | ||
620 | break; | ||
621 | |||
622 | case 'Z' : case 'z': | ||
623 | if (redzone) | ||
624 | return 0; | ||
625 | redzone = 1; | ||
626 | break; | ||
627 | |||
628 | case 'U' : case 'u': | ||
629 | if (tracking) | ||
630 | return 0; | ||
631 | tracking = 1; | ||
632 | break; | ||
633 | |||
634 | case 'T' : case 't': | ||
635 | if (tracing) | ||
636 | return 0; | ||
637 | tracing = 1; | ||
638 | break; | ||
639 | default: | ||
640 | return 0; | ||
641 | } | ||
642 | return 1; | ||
643 | } | ||
644 | |||
645 | static int slab_empty(struct slabinfo *s) | ||
646 | { | ||
647 | if (s->objects > 0) | ||
648 | return 0; | ||
649 | |||
650 | /* | ||
651 | * We may still have slabs even if there are no objects. Shrinking will | ||
652 | * remove them. | ||
653 | */ | ||
654 | if (s->slabs != 0) | ||
655 | set_obj(s, "shrink", 1); | ||
656 | |||
657 | return 1; | ||
658 | } | ||
659 | |||
660 | static void slab_debug(struct slabinfo *s) | ||
661 | { | ||
662 | if (strcmp(s->name, "*") == 0) | ||
663 | return; | ||
664 | |||
665 | if (sanity && !s->sanity_checks) { | ||
666 | set_obj(s, "sanity", 1); | ||
667 | } | ||
668 | if (!sanity && s->sanity_checks) { | ||
669 | if (slab_empty(s)) | ||
670 | set_obj(s, "sanity", 0); | ||
671 | else | ||
672 | fprintf(stderr, "%s not empty cannot disable sanity checks\n", s->name); | ||
673 | } | ||
674 | if (redzone && !s->red_zone) { | ||
675 | if (slab_empty(s)) | ||
676 | set_obj(s, "red_zone", 1); | ||
677 | else | ||
678 | fprintf(stderr, "%s not empty cannot enable redzoning\n", s->name); | ||
679 | } | ||
680 | if (!redzone && s->red_zone) { | ||
681 | if (slab_empty(s)) | ||
682 | set_obj(s, "red_zone", 0); | ||
683 | else | ||
684 | fprintf(stderr, "%s not empty cannot disable redzoning\n", s->name); | ||
685 | } | ||
686 | if (poison && !s->poison) { | ||
687 | if (slab_empty(s)) | ||
688 | set_obj(s, "poison", 1); | ||
689 | else | ||
690 | fprintf(stderr, "%s not empty cannot enable poisoning\n", s->name); | ||
691 | } | ||
692 | if (!poison && s->poison) { | ||
693 | if (slab_empty(s)) | ||
694 | set_obj(s, "poison", 0); | ||
695 | else | ||
696 | fprintf(stderr, "%s not empty cannot disable poisoning\n", s->name); | ||
697 | } | ||
698 | if (tracking && !s->store_user) { | ||
699 | if (slab_empty(s)) | ||
700 | set_obj(s, "store_user", 1); | ||
701 | else | ||
702 | fprintf(stderr, "%s not empty cannot enable tracking\n", s->name); | ||
703 | } | ||
704 | if (!tracking && s->store_user) { | ||
705 | if (slab_empty(s)) | ||
706 | set_obj(s, "store_user", 0); | ||
707 | else | ||
708 | fprintf(stderr, "%s not empty cannot disable tracking\n", s->name); | ||
709 | } | ||
710 | if (tracing && !s->trace) { | ||
711 | if (slabs == 1) | ||
712 | set_obj(s, "trace", 1); | ||
713 | else | ||
714 | fprintf(stderr, "%s can only enable trace for one slab at a time\n", s->name); | ||
715 | } | ||
716 | if (!tracing && s->trace) | ||
717 | set_obj(s, "trace", 1); | ||
718 | } | ||
719 | |||
720 | static void totals(void) | ||
721 | { | ||
722 | struct slabinfo *s; | ||
723 | |||
724 | int used_slabs = 0; | ||
725 | char b1[20], b2[20], b3[20], b4[20]; | ||
726 | unsigned long long max = 1ULL << 63; | ||
727 | |||
728 | /* Object size */ | ||
729 | unsigned long long min_objsize = max, max_objsize = 0, avg_objsize; | ||
730 | |||
731 | /* Number of partial slabs in a slabcache */ | ||
732 | unsigned long long min_partial = max, max_partial = 0, | ||
733 | avg_partial, total_partial = 0; | ||
734 | |||
735 | /* Number of slabs in a slab cache */ | ||
736 | unsigned long long min_slabs = max, max_slabs = 0, | ||
737 | avg_slabs, total_slabs = 0; | ||
738 | |||
739 | /* Size of the whole slab */ | ||
740 | unsigned long long min_size = max, max_size = 0, | ||
741 | avg_size, total_size = 0; | ||
742 | |||
743 | /* Bytes used for object storage in a slab */ | ||
744 | unsigned long long min_used = max, max_used = 0, | ||
745 | avg_used, total_used = 0; | ||
746 | |||
747 | /* Waste: Bytes used for alignment and padding */ | ||
748 | unsigned long long min_waste = max, max_waste = 0, | ||
749 | avg_waste, total_waste = 0; | ||
750 | /* Number of objects in a slab */ | ||
751 | unsigned long long min_objects = max, max_objects = 0, | ||
752 | avg_objects, total_objects = 0; | ||
753 | /* Waste per object */ | ||
754 | unsigned long long min_objwaste = max, | ||
755 | max_objwaste = 0, avg_objwaste, | ||
756 | total_objwaste = 0; | ||
757 | |||
758 | /* Memory per object */ | ||
759 | unsigned long long min_memobj = max, | ||
760 | max_memobj = 0, avg_memobj, | ||
761 | total_objsize = 0; | ||
762 | |||
763 | /* Percentage of partial slabs per slab */ | ||
764 | unsigned long min_ppart = 100, max_ppart = 0, | ||
765 | avg_ppart, total_ppart = 0; | ||
766 | |||
767 | /* Number of objects in partial slabs */ | ||
768 | unsigned long min_partobj = max, max_partobj = 0, | ||
769 | avg_partobj, total_partobj = 0; | ||
770 | |||
771 | /* Percentage of partial objects of all objects in a slab */ | ||
772 | unsigned long min_ppartobj = 100, max_ppartobj = 0, | ||
773 | avg_ppartobj, total_ppartobj = 0; | ||
774 | |||
775 | |||
776 | for (s = slabinfo; s < slabinfo + slabs; s++) { | ||
777 | unsigned long long size; | ||
778 | unsigned long used; | ||
779 | unsigned long long wasted; | ||
780 | unsigned long long objwaste; | ||
781 | unsigned long percentage_partial_slabs; | ||
782 | unsigned long percentage_partial_objs; | ||
783 | |||
784 | if (!s->slabs || !s->objects) | ||
785 | continue; | ||
786 | |||
787 | used_slabs++; | ||
788 | |||
789 | size = slab_size(s); | ||
790 | used = s->objects * s->object_size; | ||
791 | wasted = size - used; | ||
792 | objwaste = s->slab_size - s->object_size; | ||
793 | |||
794 | percentage_partial_slabs = s->partial * 100 / s->slabs; | ||
795 | if (percentage_partial_slabs > 100) | ||
796 | percentage_partial_slabs = 100; | ||
797 | |||
798 | percentage_partial_objs = s->objects_partial * 100 | ||
799 | / s->objects; | ||
800 | |||
801 | if (percentage_partial_objs > 100) | ||
802 | percentage_partial_objs = 100; | ||
803 | |||
804 | if (s->object_size < min_objsize) | ||
805 | min_objsize = s->object_size; | ||
806 | if (s->partial < min_partial) | ||
807 | min_partial = s->partial; | ||
808 | if (s->slabs < min_slabs) | ||
809 | min_slabs = s->slabs; | ||
810 | if (size < min_size) | ||
811 | min_size = size; | ||
812 | if (wasted < min_waste) | ||
813 | min_waste = wasted; | ||
814 | if (objwaste < min_objwaste) | ||
815 | min_objwaste = objwaste; | ||
816 | if (s->objects < min_objects) | ||
817 | min_objects = s->objects; | ||
818 | if (used < min_used) | ||
819 | min_used = used; | ||
820 | if (s->objects_partial < min_partobj) | ||
821 | min_partobj = s->objects_partial; | ||
822 | if (percentage_partial_slabs < min_ppart) | ||
823 | min_ppart = percentage_partial_slabs; | ||
824 | if (percentage_partial_objs < min_ppartobj) | ||
825 | min_ppartobj = percentage_partial_objs; | ||
826 | if (s->slab_size < min_memobj) | ||
827 | min_memobj = s->slab_size; | ||
828 | |||
829 | if (s->object_size > max_objsize) | ||
830 | max_objsize = s->object_size; | ||
831 | if (s->partial > max_partial) | ||
832 | max_partial = s->partial; | ||
833 | if (s->slabs > max_slabs) | ||
834 | max_slabs = s->slabs; | ||
835 | if (size > max_size) | ||
836 | max_size = size; | ||
837 | if (wasted > max_waste) | ||
838 | max_waste = wasted; | ||
839 | if (objwaste > max_objwaste) | ||
840 | max_objwaste = objwaste; | ||
841 | if (s->objects > max_objects) | ||
842 | max_objects = s->objects; | ||
843 | if (used > max_used) | ||
844 | max_used = used; | ||
845 | if (s->objects_partial > max_partobj) | ||
846 | max_partobj = s->objects_partial; | ||
847 | if (percentage_partial_slabs > max_ppart) | ||
848 | max_ppart = percentage_partial_slabs; | ||
849 | if (percentage_partial_objs > max_ppartobj) | ||
850 | max_ppartobj = percentage_partial_objs; | ||
851 | if (s->slab_size > max_memobj) | ||
852 | max_memobj = s->slab_size; | ||
853 | |||
854 | total_partial += s->partial; | ||
855 | total_slabs += s->slabs; | ||
856 | total_size += size; | ||
857 | total_waste += wasted; | ||
858 | |||
859 | total_objects += s->objects; | ||
860 | total_used += used; | ||
861 | total_partobj += s->objects_partial; | ||
862 | total_ppart += percentage_partial_slabs; | ||
863 | total_ppartobj += percentage_partial_objs; | ||
864 | |||
865 | total_objwaste += s->objects * objwaste; | ||
866 | total_objsize += s->objects * s->slab_size; | ||
867 | } | ||
868 | |||
869 | if (!total_objects) { | ||
870 | printf("No objects\n"); | ||
871 | return; | ||
872 | } | ||
873 | if (!used_slabs) { | ||
874 | printf("No slabs\n"); | ||
875 | return; | ||
876 | } | ||
877 | |||
878 | /* Per slab averages */ | ||
879 | avg_partial = total_partial / used_slabs; | ||
880 | avg_slabs = total_slabs / used_slabs; | ||
881 | avg_size = total_size / used_slabs; | ||
882 | avg_waste = total_waste / used_slabs; | ||
883 | |||
884 | avg_objects = total_objects / used_slabs; | ||
885 | avg_used = total_used / used_slabs; | ||
886 | avg_partobj = total_partobj / used_slabs; | ||
887 | avg_ppart = total_ppart / used_slabs; | ||
888 | avg_ppartobj = total_ppartobj / used_slabs; | ||
889 | |||
890 | /* Per object object sizes */ | ||
891 | avg_objsize = total_used / total_objects; | ||
892 | avg_objwaste = total_objwaste / total_objects; | ||
893 | avg_partobj = total_partobj * 100 / total_objects; | ||
894 | avg_memobj = total_objsize / total_objects; | ||
895 | |||
896 | printf("Slabcache Totals\n"); | ||
897 | printf("----------------\n"); | ||
898 | printf("Slabcaches : %3d Aliases : %3d->%-3d Active: %3d\n", | ||
899 | slabs, aliases, alias_targets, used_slabs); | ||
900 | |||
901 | store_size(b1, total_size);store_size(b2, total_waste); | ||
902 | store_size(b3, total_waste * 100 / total_used); | ||
903 | printf("Memory used: %6s # Loss : %6s MRatio:%6s%%\n", b1, b2, b3); | ||
904 | |||
905 | store_size(b1, total_objects);store_size(b2, total_partobj); | ||
906 | store_size(b3, total_partobj * 100 / total_objects); | ||
907 | printf("# Objects : %6s # PartObj: %6s ORatio:%6s%%\n", b1, b2, b3); | ||
908 | |||
909 | printf("\n"); | ||
910 | printf("Per Cache Average Min Max Total\n"); | ||
911 | printf("---------------------------------------------------------\n"); | ||
912 | |||
913 | store_size(b1, avg_objects);store_size(b2, min_objects); | ||
914 | store_size(b3, max_objects);store_size(b4, total_objects); | ||
915 | printf("#Objects %10s %10s %10s %10s\n", | ||
916 | b1, b2, b3, b4); | ||
917 | |||
918 | store_size(b1, avg_slabs);store_size(b2, min_slabs); | ||
919 | store_size(b3, max_slabs);store_size(b4, total_slabs); | ||
920 | printf("#Slabs %10s %10s %10s %10s\n", | ||
921 | b1, b2, b3, b4); | ||
922 | |||
923 | store_size(b1, avg_partial);store_size(b2, min_partial); | ||
924 | store_size(b3, max_partial);store_size(b4, total_partial); | ||
925 | printf("#PartSlab %10s %10s %10s %10s\n", | ||
926 | b1, b2, b3, b4); | ||
927 | store_size(b1, avg_ppart);store_size(b2, min_ppart); | ||
928 | store_size(b3, max_ppart); | ||
929 | store_size(b4, total_partial * 100 / total_slabs); | ||
930 | printf("%%PartSlab%10s%% %10s%% %10s%% %10s%%\n", | ||
931 | b1, b2, b3, b4); | ||
932 | |||
933 | store_size(b1, avg_partobj);store_size(b2, min_partobj); | ||
934 | store_size(b3, max_partobj); | ||
935 | store_size(b4, total_partobj); | ||
936 | printf("PartObjs %10s %10s %10s %10s\n", | ||
937 | b1, b2, b3, b4); | ||
938 | |||
939 | store_size(b1, avg_ppartobj);store_size(b2, min_ppartobj); | ||
940 | store_size(b3, max_ppartobj); | ||
941 | store_size(b4, total_partobj * 100 / total_objects); | ||
942 | printf("%% PartObj%10s%% %10s%% %10s%% %10s%%\n", | ||
943 | b1, b2, b3, b4); | ||
944 | |||
945 | store_size(b1, avg_size);store_size(b2, min_size); | ||
946 | store_size(b3, max_size);store_size(b4, total_size); | ||
947 | printf("Memory %10s %10s %10s %10s\n", | ||
948 | b1, b2, b3, b4); | ||
949 | |||
950 | store_size(b1, avg_used);store_size(b2, min_used); | ||
951 | store_size(b3, max_used);store_size(b4, total_used); | ||
952 | printf("Used %10s %10s %10s %10s\n", | ||
953 | b1, b2, b3, b4); | ||
954 | |||
955 | store_size(b1, avg_waste);store_size(b2, min_waste); | ||
956 | store_size(b3, max_waste);store_size(b4, total_waste); | ||
957 | printf("Loss %10s %10s %10s %10s\n", | ||
958 | b1, b2, b3, b4); | ||
959 | |||
960 | printf("\n"); | ||
961 | printf("Per Object Average Min Max\n"); | ||
962 | printf("---------------------------------------------\n"); | ||
963 | |||
964 | store_size(b1, avg_memobj);store_size(b2, min_memobj); | ||
965 | store_size(b3, max_memobj); | ||
966 | printf("Memory %10s %10s %10s\n", | ||
967 | b1, b2, b3); | ||
968 | store_size(b1, avg_objsize);store_size(b2, min_objsize); | ||
969 | store_size(b3, max_objsize); | ||
970 | printf("User %10s %10s %10s\n", | ||
971 | b1, b2, b3); | ||
972 | |||
973 | store_size(b1, avg_objwaste);store_size(b2, min_objwaste); | ||
974 | store_size(b3, max_objwaste); | ||
975 | printf("Loss %10s %10s %10s\n", | ||
976 | b1, b2, b3); | ||
977 | } | ||
978 | |||
979 | static void sort_slabs(void) | ||
980 | { | ||
981 | struct slabinfo *s1,*s2; | ||
982 | |||
983 | for (s1 = slabinfo; s1 < slabinfo + slabs; s1++) { | ||
984 | for (s2 = s1 + 1; s2 < slabinfo + slabs; s2++) { | ||
985 | int result; | ||
986 | |||
987 | if (sort_size) | ||
988 | result = slab_size(s1) < slab_size(s2); | ||
989 | else if (sort_active) | ||
990 | result = slab_activity(s1) < slab_activity(s2); | ||
991 | else | ||
992 | result = strcasecmp(s1->name, s2->name); | ||
993 | |||
994 | if (show_inverted) | ||
995 | result = -result; | ||
996 | |||
997 | if (result > 0) { | ||
998 | struct slabinfo t; | ||
999 | |||
1000 | memcpy(&t, s1, sizeof(struct slabinfo)); | ||
1001 | memcpy(s1, s2, sizeof(struct slabinfo)); | ||
1002 | memcpy(s2, &t, sizeof(struct slabinfo)); | ||
1003 | } | ||
1004 | } | ||
1005 | } | ||
1006 | } | ||
1007 | |||
1008 | static void sort_aliases(void) | ||
1009 | { | ||
1010 | struct aliasinfo *a1,*a2; | ||
1011 | |||
1012 | for (a1 = aliasinfo; a1 < aliasinfo + aliases; a1++) { | ||
1013 | for (a2 = a1 + 1; a2 < aliasinfo + aliases; a2++) { | ||
1014 | char *n1, *n2; | ||
1015 | |||
1016 | n1 = a1->name; | ||
1017 | n2 = a2->name; | ||
1018 | if (show_alias && !show_inverted) { | ||
1019 | n1 = a1->ref; | ||
1020 | n2 = a2->ref; | ||
1021 | } | ||
1022 | if (strcasecmp(n1, n2) > 0) { | ||
1023 | struct aliasinfo t; | ||
1024 | |||
1025 | memcpy(&t, a1, sizeof(struct aliasinfo)); | ||
1026 | memcpy(a1, a2, sizeof(struct aliasinfo)); | ||
1027 | memcpy(a2, &t, sizeof(struct aliasinfo)); | ||
1028 | } | ||
1029 | } | ||
1030 | } | ||
1031 | } | ||
1032 | |||
1033 | static void link_slabs(void) | ||
1034 | { | ||
1035 | struct aliasinfo *a; | ||
1036 | struct slabinfo *s; | ||
1037 | |||
1038 | for (a = aliasinfo; a < aliasinfo + aliases; a++) { | ||
1039 | |||
1040 | for (s = slabinfo; s < slabinfo + slabs; s++) | ||
1041 | if (strcmp(a->ref, s->name) == 0) { | ||
1042 | a->slab = s; | ||
1043 | s->refs++; | ||
1044 | break; | ||
1045 | } | ||
1046 | if (s == slabinfo + slabs) | ||
1047 | fatal("Unresolved alias %s\n", a->ref); | ||
1048 | } | ||
1049 | } | ||
1050 | |||
1051 | static void alias(void) | ||
1052 | { | ||
1053 | struct aliasinfo *a; | ||
1054 | char *active = NULL; | ||
1055 | |||
1056 | sort_aliases(); | ||
1057 | link_slabs(); | ||
1058 | |||
1059 | for(a = aliasinfo; a < aliasinfo + aliases; a++) { | ||
1060 | |||
1061 | if (!show_single_ref && a->slab->refs == 1) | ||
1062 | continue; | ||
1063 | |||
1064 | if (!show_inverted) { | ||
1065 | if (active) { | ||
1066 | if (strcmp(a->slab->name, active) == 0) { | ||
1067 | printf(" %s", a->name); | ||
1068 | continue; | ||
1069 | } | ||
1070 | } | ||
1071 | printf("\n%-12s <- %s", a->slab->name, a->name); | ||
1072 | active = a->slab->name; | ||
1073 | } | ||
1074 | else | ||
1075 | printf("%-20s -> %s\n", a->name, a->slab->name); | ||
1076 | } | ||
1077 | if (active) | ||
1078 | printf("\n"); | ||
1079 | } | ||
1080 | |||
1081 | |||
1082 | static void rename_slabs(void) | ||
1083 | { | ||
1084 | struct slabinfo *s; | ||
1085 | struct aliasinfo *a; | ||
1086 | |||
1087 | for (s = slabinfo; s < slabinfo + slabs; s++) { | ||
1088 | if (*s->name != ':') | ||
1089 | continue; | ||
1090 | |||
1091 | if (s->refs > 1 && !show_first_alias) | ||
1092 | continue; | ||
1093 | |||
1094 | a = find_one_alias(s); | ||
1095 | |||
1096 | if (a) | ||
1097 | s->name = a->name; | ||
1098 | else { | ||
1099 | s->name = "*"; | ||
1100 | actual_slabs--; | ||
1101 | } | ||
1102 | } | ||
1103 | } | ||
1104 | |||
1105 | static int slab_mismatch(char *slab) | ||
1106 | { | ||
1107 | return regexec(&pattern, slab, 0, NULL, 0); | ||
1108 | } | ||
1109 | |||
1110 | static void read_slab_dir(void) | ||
1111 | { | ||
1112 | DIR *dir; | ||
1113 | struct dirent *de; | ||
1114 | struct slabinfo *slab = slabinfo; | ||
1115 | struct aliasinfo *alias = aliasinfo; | ||
1116 | char *p; | ||
1117 | char *t; | ||
1118 | int count; | ||
1119 | |||
1120 | if (chdir("/sys/kernel/slab") && chdir("/sys/slab")) | ||
1121 | fatal("SYSFS support for SLUB not active\n"); | ||
1122 | |||
1123 | dir = opendir("."); | ||
1124 | while ((de = readdir(dir))) { | ||
1125 | if (de->d_name[0] == '.' || | ||
1126 | (de->d_name[0] != ':' && slab_mismatch(de->d_name))) | ||
1127 | continue; | ||
1128 | switch (de->d_type) { | ||
1129 | case DT_LNK: | ||
1130 | alias->name = strdup(de->d_name); | ||
1131 | count = readlink(de->d_name, buffer, sizeof(buffer)); | ||
1132 | |||
1133 | if (count < 0) | ||
1134 | fatal("Cannot read symlink %s\n", de->d_name); | ||
1135 | |||
1136 | buffer[count] = 0; | ||
1137 | p = buffer + count; | ||
1138 | while (p > buffer && p[-1] != '/') | ||
1139 | p--; | ||
1140 | alias->ref = strdup(p); | ||
1141 | alias++; | ||
1142 | break; | ||
1143 | case DT_DIR: | ||
1144 | if (chdir(de->d_name)) | ||
1145 | fatal("Unable to access slab %s\n", slab->name); | ||
1146 | slab->name = strdup(de->d_name); | ||
1147 | slab->alias = 0; | ||
1148 | slab->refs = 0; | ||
1149 | slab->aliases = get_obj("aliases"); | ||
1150 | slab->align = get_obj("align"); | ||
1151 | slab->cache_dma = get_obj("cache_dma"); | ||
1152 | slab->cpu_slabs = get_obj("cpu_slabs"); | ||
1153 | slab->destroy_by_rcu = get_obj("destroy_by_rcu"); | ||
1154 | slab->hwcache_align = get_obj("hwcache_align"); | ||
1155 | slab->object_size = get_obj("object_size"); | ||
1156 | slab->objects = get_obj("objects"); | ||
1157 | slab->objects_partial = get_obj("objects_partial"); | ||
1158 | slab->objects_total = get_obj("objects_total"); | ||
1159 | slab->objs_per_slab = get_obj("objs_per_slab"); | ||
1160 | slab->order = get_obj("order"); | ||
1161 | slab->partial = get_obj("partial"); | ||
1162 | slab->partial = get_obj_and_str("partial", &t); | ||
1163 | decode_numa_list(slab->numa_partial, t); | ||
1164 | free(t); | ||
1165 | slab->poison = get_obj("poison"); | ||
1166 | slab->reclaim_account = get_obj("reclaim_account"); | ||
1167 | slab->red_zone = get_obj("red_zone"); | ||
1168 | slab->sanity_checks = get_obj("sanity_checks"); | ||
1169 | slab->slab_size = get_obj("slab_size"); | ||
1170 | slab->slabs = get_obj_and_str("slabs", &t); | ||
1171 | decode_numa_list(slab->numa, t); | ||
1172 | free(t); | ||
1173 | slab->store_user = get_obj("store_user"); | ||
1174 | slab->trace = get_obj("trace"); | ||
1175 | slab->alloc_fastpath = get_obj("alloc_fastpath"); | ||
1176 | slab->alloc_slowpath = get_obj("alloc_slowpath"); | ||
1177 | slab->free_fastpath = get_obj("free_fastpath"); | ||
1178 | slab->free_slowpath = get_obj("free_slowpath"); | ||
1179 | slab->free_frozen= get_obj("free_frozen"); | ||
1180 | slab->free_add_partial = get_obj("free_add_partial"); | ||
1181 | slab->free_remove_partial = get_obj("free_remove_partial"); | ||
1182 | slab->alloc_from_partial = get_obj("alloc_from_partial"); | ||
1183 | slab->alloc_slab = get_obj("alloc_slab"); | ||
1184 | slab->alloc_refill = get_obj("alloc_refill"); | ||
1185 | slab->free_slab = get_obj("free_slab"); | ||
1186 | slab->cpuslab_flush = get_obj("cpuslab_flush"); | ||
1187 | slab->deactivate_full = get_obj("deactivate_full"); | ||
1188 | slab->deactivate_empty = get_obj("deactivate_empty"); | ||
1189 | slab->deactivate_to_head = get_obj("deactivate_to_head"); | ||
1190 | slab->deactivate_to_tail = get_obj("deactivate_to_tail"); | ||
1191 | slab->deactivate_remote_frees = get_obj("deactivate_remote_frees"); | ||
1192 | slab->order_fallback = get_obj("order_fallback"); | ||
1193 | chdir(".."); | ||
1194 | if (slab->name[0] == ':') | ||
1195 | alias_targets++; | ||
1196 | slab++; | ||
1197 | break; | ||
1198 | default : | ||
1199 | fatal("Unknown file type %lx\n", de->d_type); | ||
1200 | } | ||
1201 | } | ||
1202 | closedir(dir); | ||
1203 | slabs = slab - slabinfo; | ||
1204 | actual_slabs = slabs; | ||
1205 | aliases = alias - aliasinfo; | ||
1206 | if (slabs > MAX_SLABS) | ||
1207 | fatal("Too many slabs\n"); | ||
1208 | if (aliases > MAX_ALIASES) | ||
1209 | fatal("Too many aliases\n"); | ||
1210 | } | ||
1211 | |||
1212 | static void output_slabs(void) | ||
1213 | { | ||
1214 | struct slabinfo *slab; | ||
1215 | |||
1216 | for (slab = slabinfo; slab < slabinfo + slabs; slab++) { | ||
1217 | |||
1218 | if (slab->alias) | ||
1219 | continue; | ||
1220 | |||
1221 | |||
1222 | if (show_numa) | ||
1223 | slab_numa(slab, 0); | ||
1224 | else if (show_track) | ||
1225 | show_tracking(slab); | ||
1226 | else if (validate) | ||
1227 | slab_validate(slab); | ||
1228 | else if (shrink) | ||
1229 | slab_shrink(slab); | ||
1230 | else if (set_debug) | ||
1231 | slab_debug(slab); | ||
1232 | else if (show_ops) | ||
1233 | ops(slab); | ||
1234 | else if (show_slab) | ||
1235 | slabcache(slab); | ||
1236 | else if (show_report) | ||
1237 | report(slab); | ||
1238 | } | ||
1239 | } | ||
1240 | |||
1241 | struct option opts[] = { | ||
1242 | { "aliases", 0, NULL, 'a' }, | ||
1243 | { "activity", 0, NULL, 'A' }, | ||
1244 | { "debug", 2, NULL, 'd' }, | ||
1245 | { "display-activity", 0, NULL, 'D' }, | ||
1246 | { "empty", 0, NULL, 'e' }, | ||
1247 | { "first-alias", 0, NULL, 'f' }, | ||
1248 | { "help", 0, NULL, 'h' }, | ||
1249 | { "inverted", 0, NULL, 'i'}, | ||
1250 | { "numa", 0, NULL, 'n' }, | ||
1251 | { "ops", 0, NULL, 'o' }, | ||
1252 | { "report", 0, NULL, 'r' }, | ||
1253 | { "shrink", 0, NULL, 's' }, | ||
1254 | { "slabs", 0, NULL, 'l' }, | ||
1255 | { "track", 0, NULL, 't'}, | ||
1256 | { "validate", 0, NULL, 'v' }, | ||
1257 | { "zero", 0, NULL, 'z' }, | ||
1258 | { "1ref", 0, NULL, '1'}, | ||
1259 | { NULL, 0, NULL, 0 } | ||
1260 | }; | ||
1261 | |||
1262 | int main(int argc, char *argv[]) | ||
1263 | { | ||
1264 | int c; | ||
1265 | int err; | ||
1266 | char *pattern_source; | ||
1267 | |||
1268 | page_size = getpagesize(); | ||
1269 | |||
1270 | while ((c = getopt_long(argc, argv, "aAd::Defhil1noprstvzTS", | ||
1271 | opts, NULL)) != -1) | ||
1272 | switch (c) { | ||
1273 | case '1': | ||
1274 | show_single_ref = 1; | ||
1275 | break; | ||
1276 | case 'a': | ||
1277 | show_alias = 1; | ||
1278 | break; | ||
1279 | case 'A': | ||
1280 | sort_active = 1; | ||
1281 | break; | ||
1282 | case 'd': | ||
1283 | set_debug = 1; | ||
1284 | if (!debug_opt_scan(optarg)) | ||
1285 | fatal("Invalid debug option '%s'\n", optarg); | ||
1286 | break; | ||
1287 | case 'D': | ||
1288 | show_activity = 1; | ||
1289 | break; | ||
1290 | case 'e': | ||
1291 | show_empty = 1; | ||
1292 | break; | ||
1293 | case 'f': | ||
1294 | show_first_alias = 1; | ||
1295 | break; | ||
1296 | case 'h': | ||
1297 | usage(); | ||
1298 | return 0; | ||
1299 | case 'i': | ||
1300 | show_inverted = 1; | ||
1301 | break; | ||
1302 | case 'n': | ||
1303 | show_numa = 1; | ||
1304 | break; | ||
1305 | case 'o': | ||
1306 | show_ops = 1; | ||
1307 | break; | ||
1308 | case 'r': | ||
1309 | show_report = 1; | ||
1310 | break; | ||
1311 | case 's': | ||
1312 | shrink = 1; | ||
1313 | break; | ||
1314 | case 'l': | ||
1315 | show_slab = 1; | ||
1316 | break; | ||
1317 | case 't': | ||
1318 | show_track = 1; | ||
1319 | break; | ||
1320 | case 'v': | ||
1321 | validate = 1; | ||
1322 | break; | ||
1323 | case 'z': | ||
1324 | skip_zero = 0; | ||
1325 | break; | ||
1326 | case 'T': | ||
1327 | show_totals = 1; | ||
1328 | break; | ||
1329 | case 'S': | ||
1330 | sort_size = 1; | ||
1331 | break; | ||
1332 | |||
1333 | default: | ||
1334 | fatal("%s: Invalid option '%c'\n", argv[0], optopt); | ||
1335 | |||
1336 | } | ||
1337 | |||
1338 | if (!show_slab && !show_alias && !show_track && !show_report | ||
1339 | && !validate && !shrink && !set_debug && !show_ops) | ||
1340 | show_slab = 1; | ||
1341 | |||
1342 | if (argc > optind) | ||
1343 | pattern_source = argv[optind]; | ||
1344 | else | ||
1345 | pattern_source = ".*"; | ||
1346 | |||
1347 | err = regcomp(&pattern, pattern_source, REG_ICASE|REG_NOSUB); | ||
1348 | if (err) | ||
1349 | fatal("%s: Invalid pattern '%s' code %d\n", | ||
1350 | argv[0], pattern_source, err); | ||
1351 | read_slab_dir(); | ||
1352 | if (show_alias) | ||
1353 | alias(); | ||
1354 | else | ||
1355 | if (show_totals) | ||
1356 | totals(); | ||
1357 | else { | ||
1358 | link_slabs(); | ||
1359 | rename_slabs(); | ||
1360 | sort_slabs(); | ||
1361 | output_slabs(); | ||
1362 | } | ||
1363 | return 0; | ||
1364 | } | ||