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Commit | Line | Data |
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c09d8751 CL |
1 | /* |
2 | * Slabinfo: Tool to get reports about slabs | |
3 | * | |
cde53535 | 4 | * (C) 2007 sgi, Christoph Lameter |
9da4714a | 5 | * (C) 2011 Linux Foundation, Christoph Lameter |
c09d8751 | 6 | * |
9da4714a | 7 | * Compile with: |
c09d8751 CL |
8 | * |
9 | * gcc -o slabinfo slabinfo.c | |
10 | */ | |
11 | #include <stdio.h> | |
12 | #include <stdlib.h> | |
13 | #include <sys/types.h> | |
14 | #include <dirent.h> | |
f32143a2 | 15 | #include <strings.h> |
c09d8751 CL |
16 | #include <string.h> |
17 | #include <unistd.h> | |
18 | #include <stdarg.h> | |
19 | #include <getopt.h> | |
20 | #include <regex.h> | |
a87615b8 | 21 | #include <errno.h> |
c09d8751 CL |
22 | |
23 | #define MAX_SLABS 500 | |
24 | #define MAX_ALIASES 500 | |
25 | #define MAX_NODES 1024 | |
26 | ||
27 | struct slabinfo { | |
28 | char *name; | |
29 | int alias; | |
30 | int refs; | |
31 | int aliases, align, cache_dma, cpu_slabs, destroy_by_rcu; | |
32 | int hwcache_align, object_size, objs_per_slab; | |
33 | int sanity_checks, slab_size, store_user, trace; | |
34 | int order, poison, reclaim_account, red_zone; | |
205ab99d | 35 | unsigned long partial, objects, slabs, objects_partial, objects_total; |
8ff12cfc CL |
36 | unsigned long alloc_fastpath, alloc_slowpath; |
37 | unsigned long free_fastpath, free_slowpath; | |
38 | unsigned long free_frozen, free_add_partial, free_remove_partial; | |
39 | unsigned long alloc_from_partial, alloc_slab, free_slab, alloc_refill; | |
40 | unsigned long cpuslab_flush, deactivate_full, deactivate_empty; | |
41 | unsigned long deactivate_to_head, deactivate_to_tail; | |
f715e6f1 | 42 | unsigned long deactivate_remote_frees, order_fallback; |
9da4714a CL |
43 | unsigned long cmpxchg_double_cpu_fail, cmpxchg_double_fail; |
44 | unsigned long alloc_node_mismatch, deactivate_bypass; | |
aca726a0 | 45 | unsigned long cpu_partial_alloc, cpu_partial_free; |
c09d8751 CL |
46 | int numa[MAX_NODES]; |
47 | int numa_partial[MAX_NODES]; | |
48 | } slabinfo[MAX_SLABS]; | |
49 | ||
50 | struct aliasinfo { | |
51 | char *name; | |
52 | char *ref; | |
53 | struct slabinfo *slab; | |
54 | } aliasinfo[MAX_ALIASES]; | |
55 | ||
2cee611a SS |
56 | int slabs; |
57 | int actual_slabs; | |
58 | int aliases; | |
59 | int alias_targets; | |
60 | int highest_node; | |
c09d8751 CL |
61 | |
62 | char buffer[4096]; | |
63 | ||
2cee611a SS |
64 | int show_empty; |
65 | int show_report; | |
66 | int show_alias; | |
67 | int show_slab; | |
c09d8751 | 68 | int skip_zero = 1; |
2cee611a SS |
69 | int show_numa; |
70 | int show_track; | |
71 | int show_first_alias; | |
72 | int validate; | |
73 | int shrink; | |
74 | int show_inverted; | |
75 | int show_single_ref; | |
76 | int show_totals; | |
77 | int sort_size; | |
78 | int sort_active; | |
79 | int set_debug; | |
80 | int show_ops; | |
81 | int show_activity; | |
4980a963 | 82 | int output_lines = -1; |
2651f6e7 | 83 | int sort_loss; |
016c6cdf | 84 | int extended_totals; |
a8ea0bf1 | 85 | int show_bytes; |
a87615b8 CL |
86 | |
87 | /* Debug options */ | |
2cee611a SS |
88 | int sanity; |
89 | int redzone; | |
90 | int poison; | |
91 | int tracking; | |
92 | int tracing; | |
c09d8751 CL |
93 | |
94 | int page_size; | |
95 | ||
96 | regex_t pattern; | |
97 | ||
b7ed698c | 98 | static void fatal(const char *x, ...) |
c09d8751 CL |
99 | { |
100 | va_list ap; | |
101 | ||
102 | va_start(ap, x); | |
103 | vfprintf(stderr, x, ap); | |
104 | va_end(ap); | |
f32143a2 | 105 | exit(EXIT_FAILURE); |
c09d8751 CL |
106 | } |
107 | ||
b7ed698c | 108 | static void usage(void) |
c09d8751 | 109 | { |
9da4714a | 110 | printf("slabinfo 4/15/2011. (c) 2007 sgi/(c) 2011 Linux Foundation.\n\n" |
a87615b8 | 111 | "slabinfo [-ahnpvtsz] [-d debugopts] [slab-regexp]\n" |
c09d8751 | 112 | "-a|--aliases Show aliases\n" |
8ff12cfc | 113 | "-A|--activity Most active slabs first\n" |
a87615b8 | 114 | "-d<options>|--debug=<options> Set/Clear Debug options\n" |
8ff12cfc CL |
115 | "-D|--display-active Switch line format to activity\n" |
116 | "-e|--empty Show empty slabs\n" | |
a87615b8 | 117 | "-f|--first-alias Show first alias\n" |
c09d8751 | 118 | "-h|--help Show usage information\n" |
a87615b8 CL |
119 | "-i|--inverted Inverted list\n" |
120 | "-l|--slabs Show slabs\n" | |
c09d8751 | 121 | "-n|--numa Show NUMA information\n" |
a87615b8 | 122 | "-o|--ops Show kmem_cache_ops\n" |
c09d8751 | 123 | "-s|--shrink Shrink slabs\n" |
a87615b8 CL |
124 | "-r|--report Detailed report on single slabs\n" |
125 | "-S|--Size Sort by size\n" | |
c09d8751 CL |
126 | "-t|--tracking Show alloc/free information\n" |
127 | "-T|--Totals Show summary information\n" | |
a87615b8 | 128 | "-v|--validate Validate slabs\n" |
c09d8751 | 129 | "-z|--zero Include empty slabs\n" |
c09d8751 | 130 | "-1|--1ref Single reference\n" |
4980a963 | 131 | "-N|--lines=K Show the first K slabs\n" |
2651f6e7 | 132 | "-L|--Loss Sort by loss\n" |
016c6cdf | 133 | "-X|--Xtotals Show extended summary information\n" |
a8ea0bf1 | 134 | "-B|--Bytes Show size in bytes\n" |
a87615b8 CL |
135 | "\nValid debug options (FZPUT may be combined)\n" |
136 | "a / A Switch on all debug options (=FZUP)\n" | |
137 | "- Switch off all debug options\n" | |
becfda68 | 138 | "f / F Sanity Checks (SLAB_CONSISTENCY_CHECKS)\n" |
a87615b8 CL |
139 | "z / Z Redzoning\n" |
140 | "p / P Poisoning\n" | |
141 | "u / U Tracking\n" | |
142 | "t / T Tracing\n" | |
c09d8751 CL |
143 | ); |
144 | } | |
145 | ||
b7ed698c | 146 | static unsigned long read_obj(const char *name) |
c09d8751 CL |
147 | { |
148 | FILE *f = fopen(name, "r"); | |
149 | ||
150 | if (!f) | |
151 | buffer[0] = 0; | |
152 | else { | |
f32143a2 | 153 | if (!fgets(buffer, sizeof(buffer), f)) |
c09d8751 CL |
154 | buffer[0] = 0; |
155 | fclose(f); | |
156 | if (buffer[strlen(buffer)] == '\n') | |
157 | buffer[strlen(buffer)] = 0; | |
158 | } | |
159 | return strlen(buffer); | |
160 | } | |
161 | ||
162 | ||
163 | /* | |
164 | * Get the contents of an attribute | |
165 | */ | |
b7ed698c | 166 | static unsigned long get_obj(const char *name) |
c09d8751 CL |
167 | { |
168 | if (!read_obj(name)) | |
169 | return 0; | |
170 | ||
171 | return atol(buffer); | |
172 | } | |
173 | ||
b7ed698c | 174 | static unsigned long get_obj_and_str(const char *name, char **x) |
c09d8751 CL |
175 | { |
176 | unsigned long result = 0; | |
177 | char *p; | |
178 | ||
179 | *x = NULL; | |
180 | ||
181 | if (!read_obj(name)) { | |
182 | x = NULL; | |
183 | return 0; | |
184 | } | |
185 | result = strtoul(buffer, &p, 10); | |
186 | while (*p == ' ') | |
187 | p++; | |
188 | if (*p) | |
189 | *x = strdup(p); | |
190 | return result; | |
191 | } | |
192 | ||
b7ed698c | 193 | static void set_obj(struct slabinfo *s, const char *name, int n) |
c09d8751 CL |
194 | { |
195 | char x[100]; | |
a87615b8 | 196 | FILE *f; |
c09d8751 | 197 | |
f32143a2 | 198 | snprintf(x, 100, "%s/%s", s->name, name); |
a87615b8 | 199 | f = fopen(x, "w"); |
c09d8751 CL |
200 | if (!f) |
201 | fatal("Cannot write to %s\n", x); | |
202 | ||
203 | fprintf(f, "%d\n", n); | |
204 | fclose(f); | |
205 | } | |
206 | ||
b7ed698c | 207 | static unsigned long read_slab_obj(struct slabinfo *s, const char *name) |
a87615b8 CL |
208 | { |
209 | char x[100]; | |
210 | FILE *f; | |
f32143a2 | 211 | size_t l; |
a87615b8 | 212 | |
f32143a2 | 213 | snprintf(x, 100, "%s/%s", s->name, name); |
a87615b8 CL |
214 | f = fopen(x, "r"); |
215 | if (!f) { | |
216 | buffer[0] = 0; | |
217 | l = 0; | |
218 | } else { | |
219 | l = fread(buffer, 1, sizeof(buffer), f); | |
220 | buffer[l] = 0; | |
221 | fclose(f); | |
222 | } | |
223 | return l; | |
224 | } | |
225 | ||
226 | ||
c09d8751 CL |
227 | /* |
228 | * Put a size string together | |
229 | */ | |
b7ed698c | 230 | static int store_size(char *buffer, unsigned long value) |
c09d8751 CL |
231 | { |
232 | unsigned long divisor = 1; | |
233 | char trailer = 0; | |
234 | int n; | |
235 | ||
a8ea0bf1 SS |
236 | if (!show_bytes) { |
237 | if (value > 1000000000UL) { | |
238 | divisor = 100000000UL; | |
239 | trailer = 'G'; | |
240 | } else if (value > 1000000UL) { | |
241 | divisor = 100000UL; | |
242 | trailer = 'M'; | |
243 | } else if (value > 1000UL) { | |
244 | divisor = 100; | |
245 | trailer = 'K'; | |
246 | } | |
c09d8751 CL |
247 | } |
248 | ||
249 | value /= divisor; | |
250 | n = sprintf(buffer, "%ld",value); | |
251 | if (trailer) { | |
252 | buffer[n] = trailer; | |
253 | n++; | |
254 | buffer[n] = 0; | |
255 | } | |
256 | if (divisor != 1) { | |
257 | memmove(buffer + n - 2, buffer + n - 3, 4); | |
258 | buffer[n-2] = '.'; | |
259 | n++; | |
260 | } | |
261 | return n; | |
262 | } | |
263 | ||
b7ed698c | 264 | static void decode_numa_list(int *numa, char *t) |
c09d8751 CL |
265 | { |
266 | int node; | |
267 | int nr; | |
268 | ||
269 | memset(numa, 0, MAX_NODES * sizeof(int)); | |
270 | ||
eefaca9c CL |
271 | if (!t) |
272 | return; | |
273 | ||
c09d8751 CL |
274 | while (*t == 'N') { |
275 | t++; | |
276 | node = strtoul(t, &t, 10); | |
277 | if (*t == '=') { | |
278 | t++; | |
279 | nr = strtoul(t, &t, 10); | |
280 | numa[node] = nr; | |
281 | if (node > highest_node) | |
282 | highest_node = node; | |
283 | } | |
284 | while (*t == ' ') | |
285 | t++; | |
286 | } | |
287 | } | |
288 | ||
b7ed698c | 289 | static void slab_validate(struct slabinfo *s) |
c09d8751 | 290 | { |
32f9306b CL |
291 | if (strcmp(s->name, "*") == 0) |
292 | return; | |
293 | ||
c09d8751 CL |
294 | set_obj(s, "validate", 1); |
295 | } | |
296 | ||
b7ed698c | 297 | static void slab_shrink(struct slabinfo *s) |
c09d8751 | 298 | { |
32f9306b CL |
299 | if (strcmp(s->name, "*") == 0) |
300 | return; | |
301 | ||
c09d8751 CL |
302 | set_obj(s, "shrink", 1); |
303 | } | |
304 | ||
305 | int line = 0; | |
306 | ||
b7ed698c | 307 | static void first_line(void) |
c09d8751 | 308 | { |
8ff12cfc | 309 | if (show_activity) |
a8ea0bf1 SS |
310 | printf("Name Objects Alloc Free" |
311 | " %%Fast Fallb O CmpX UL\n"); | |
8ff12cfc | 312 | else |
a8ea0bf1 | 313 | printf("Name Objects Objsize %s " |
2651f6e7 | 314 | "Slabs/Part/Cpu O/S O %%Fr %%Ef Flg\n", |
a8ea0bf1 | 315 | sort_loss ? " Loss" : "Space"); |
c09d8751 CL |
316 | } |
317 | ||
318 | /* | |
319 | * Find the shortest alias of a slab | |
320 | */ | |
b7ed698c | 321 | static struct aliasinfo *find_one_alias(struct slabinfo *find) |
c09d8751 CL |
322 | { |
323 | struct aliasinfo *a; | |
324 | struct aliasinfo *best = NULL; | |
325 | ||
326 | for(a = aliasinfo;a < aliasinfo + aliases; a++) { | |
327 | if (a->slab == find && | |
328 | (!best || strlen(best->name) < strlen(a->name))) { | |
329 | best = a; | |
330 | if (strncmp(a->name,"kmall", 5) == 0) | |
331 | return best; | |
332 | } | |
333 | } | |
a87615b8 | 334 | return best; |
c09d8751 CL |
335 | } |
336 | ||
b7ed698c | 337 | static unsigned long slab_size(struct slabinfo *s) |
c09d8751 CL |
338 | { |
339 | return s->slabs * (page_size << s->order); | |
340 | } | |
341 | ||
b7ed698c | 342 | static unsigned long slab_activity(struct slabinfo *s) |
8ff12cfc CL |
343 | { |
344 | return s->alloc_fastpath + s->free_fastpath + | |
345 | s->alloc_slowpath + s->free_slowpath; | |
346 | } | |
347 | ||
2651f6e7 SS |
348 | static unsigned long slab_waste(struct slabinfo *s) |
349 | { | |
350 | return slab_size(s) - s->objects * s->object_size; | |
351 | } | |
352 | ||
b7ed698c | 353 | static void slab_numa(struct slabinfo *s, int mode) |
a87615b8 CL |
354 | { |
355 | int node; | |
356 | ||
357 | if (strcmp(s->name, "*") == 0) | |
358 | return; | |
359 | ||
360 | if (!highest_node) { | |
361 | printf("\n%s: No NUMA information available.\n", s->name); | |
362 | return; | |
363 | } | |
364 | ||
365 | if (skip_zero && !s->slabs) | |
366 | return; | |
367 | ||
368 | if (!line) { | |
369 | printf("\n%-21s:", mode ? "NUMA nodes" : "Slab"); | |
370 | for(node = 0; node <= highest_node; node++) | |
371 | printf(" %4d", node); | |
372 | printf("\n----------------------"); | |
373 | for(node = 0; node <= highest_node; node++) | |
374 | printf("-----"); | |
375 | printf("\n"); | |
376 | } | |
377 | printf("%-21s ", mode ? "All slabs" : s->name); | |
378 | for(node = 0; node <= highest_node; node++) { | |
379 | char b[20]; | |
380 | ||
381 | store_size(b, s->numa[node]); | |
382 | printf(" %4s", b); | |
383 | } | |
384 | printf("\n"); | |
385 | if (mode) { | |
386 | printf("%-21s ", "Partial slabs"); | |
387 | for(node = 0; node <= highest_node; node++) { | |
388 | char b[20]; | |
389 | ||
390 | store_size(b, s->numa_partial[node]); | |
391 | printf(" %4s", b); | |
392 | } | |
393 | printf("\n"); | |
394 | } | |
395 | line++; | |
396 | } | |
397 | ||
b7ed698c | 398 | static void show_tracking(struct slabinfo *s) |
a87615b8 CL |
399 | { |
400 | printf("\n%s: Kernel object allocation\n", s->name); | |
401 | printf("-----------------------------------------------------------------------\n"); | |
402 | if (read_slab_obj(s, "alloc_calls")) | |
9da4714a | 403 | printf("%s", buffer); |
a87615b8 CL |
404 | else |
405 | printf("No Data\n"); | |
406 | ||
407 | printf("\n%s: Kernel object freeing\n", s->name); | |
408 | printf("------------------------------------------------------------------------\n"); | |
409 | if (read_slab_obj(s, "free_calls")) | |
9da4714a | 410 | printf("%s", buffer); |
a87615b8 CL |
411 | else |
412 | printf("No Data\n"); | |
413 | ||
414 | } | |
415 | ||
b7ed698c | 416 | static void ops(struct slabinfo *s) |
a87615b8 CL |
417 | { |
418 | if (strcmp(s->name, "*") == 0) | |
419 | return; | |
420 | ||
421 | if (read_slab_obj(s, "ops")) { | |
422 | printf("\n%s: kmem_cache operations\n", s->name); | |
423 | printf("--------------------------------------------\n"); | |
9da4714a | 424 | printf("%s", buffer); |
a87615b8 CL |
425 | } else |
426 | printf("\n%s has no kmem_cache operations\n", s->name); | |
427 | } | |
428 | ||
b7ed698c | 429 | static const char *onoff(int x) |
a87615b8 CL |
430 | { |
431 | if (x) | |
432 | return "On "; | |
433 | return "Off"; | |
434 | } | |
435 | ||
b7ed698c | 436 | static void slab_stats(struct slabinfo *s) |
8ff12cfc CL |
437 | { |
438 | unsigned long total_alloc; | |
439 | unsigned long total_free; | |
440 | unsigned long total; | |
441 | ||
442 | if (!s->alloc_slab) | |
443 | return; | |
444 | ||
445 | total_alloc = s->alloc_fastpath + s->alloc_slowpath; | |
446 | total_free = s->free_fastpath + s->free_slowpath; | |
447 | ||
448 | if (!total_alloc) | |
449 | return; | |
450 | ||
451 | printf("\n"); | |
452 | printf("Slab Perf Counter Alloc Free %%Al %%Fr\n"); | |
453 | printf("--------------------------------------------------\n"); | |
454 | printf("Fastpath %8lu %8lu %3lu %3lu\n", | |
455 | s->alloc_fastpath, s->free_fastpath, | |
456 | s->alloc_fastpath * 100 / total_alloc, | |
4b57ad93 | 457 | total_free ? s->free_fastpath * 100 / total_free : 0); |
8ff12cfc CL |
458 | printf("Slowpath %8lu %8lu %3lu %3lu\n", |
459 | total_alloc - s->alloc_fastpath, s->free_slowpath, | |
460 | (total_alloc - s->alloc_fastpath) * 100 / total_alloc, | |
4b57ad93 | 461 | total_free ? s->free_slowpath * 100 / total_free : 0); |
8ff12cfc CL |
462 | printf("Page Alloc %8lu %8lu %3lu %3lu\n", |
463 | s->alloc_slab, s->free_slab, | |
464 | s->alloc_slab * 100 / total_alloc, | |
4b57ad93 | 465 | total_free ? s->free_slab * 100 / total_free : 0); |
8ff12cfc CL |
466 | printf("Add partial %8lu %8lu %3lu %3lu\n", |
467 | s->deactivate_to_head + s->deactivate_to_tail, | |
468 | s->free_add_partial, | |
469 | (s->deactivate_to_head + s->deactivate_to_tail) * 100 / total_alloc, | |
4b57ad93 | 470 | total_free ? s->free_add_partial * 100 / total_free : 0); |
8ff12cfc CL |
471 | printf("Remove partial %8lu %8lu %3lu %3lu\n", |
472 | s->alloc_from_partial, s->free_remove_partial, | |
473 | s->alloc_from_partial * 100 / total_alloc, | |
4b57ad93 | 474 | total_free ? s->free_remove_partial * 100 / total_free : 0); |
8ff12cfc | 475 | |
aca726a0 CL |
476 | printf("Cpu partial list %8lu %8lu %3lu %3lu\n", |
477 | s->cpu_partial_alloc, s->cpu_partial_free, | |
478 | s->cpu_partial_alloc * 100 / total_alloc, | |
4b57ad93 | 479 | total_free ? s->cpu_partial_free * 100 / total_free : 0); |
aca726a0 | 480 | |
8ff12cfc CL |
481 | printf("RemoteObj/SlabFrozen %8lu %8lu %3lu %3lu\n", |
482 | s->deactivate_remote_frees, s->free_frozen, | |
483 | s->deactivate_remote_frees * 100 / total_alloc, | |
4b57ad93 | 484 | total_free ? s->free_frozen * 100 / total_free : 0); |
8ff12cfc CL |
485 | |
486 | printf("Total %8lu %8lu\n\n", total_alloc, total_free); | |
487 | ||
488 | if (s->cpuslab_flush) | |
489 | printf("Flushes %8lu\n", s->cpuslab_flush); | |
490 | ||
8ff12cfc | 491 | total = s->deactivate_full + s->deactivate_empty + |
9da4714a CL |
492 | s->deactivate_to_head + s->deactivate_to_tail + s->deactivate_bypass; |
493 | ||
494 | if (total) { | |
7c5b7239 | 495 | printf("\nSlab Deactivation Occurrences %%\n"); |
9da4714a CL |
496 | printf("-------------------------------------------------\n"); |
497 | printf("Slab full %7lu %3lu%%\n", | |
498 | s->deactivate_full, (s->deactivate_full * 100) / total); | |
499 | printf("Slab empty %7lu %3lu%%\n", | |
500 | s->deactivate_empty, (s->deactivate_empty * 100) / total); | |
501 | printf("Moved to head of partial list %7lu %3lu%%\n", | |
502 | s->deactivate_to_head, (s->deactivate_to_head * 100) / total); | |
503 | printf("Moved to tail of partial list %7lu %3lu%%\n", | |
8ff12cfc | 504 | s->deactivate_to_tail, (s->deactivate_to_tail * 100) / total); |
9da4714a CL |
505 | printf("Deactivation bypass %7lu %3lu%%\n", |
506 | s->deactivate_bypass, (s->deactivate_bypass * 100) / total); | |
507 | printf("Refilled from foreign frees %7lu %3lu%%\n", | |
508 | s->alloc_refill, (s->alloc_refill * 100) / total); | |
509 | printf("Node mismatch %7lu %3lu%%\n", | |
510 | s->alloc_node_mismatch, (s->alloc_node_mismatch * 100) / total); | |
511 | } | |
512 | ||
2d6a4d64 | 513 | if (s->cmpxchg_double_fail || s->cmpxchg_double_cpu_fail) { |
9da4714a CL |
514 | printf("\nCmpxchg_double Looping\n------------------------\n"); |
515 | printf("Locked Cmpxchg Double redos %lu\nUnlocked Cmpxchg Double redos %lu\n", | |
516 | s->cmpxchg_double_fail, s->cmpxchg_double_cpu_fail); | |
2d6a4d64 | 517 | } |
8ff12cfc CL |
518 | } |
519 | ||
b7ed698c | 520 | static void report(struct slabinfo *s) |
a87615b8 CL |
521 | { |
522 | if (strcmp(s->name, "*") == 0) | |
523 | return; | |
eefaca9c | 524 | |
a8ea0bf1 | 525 | printf("\nSlabcache: %-15s Aliases: %2d Order : %2d Objects: %lu\n", |
eefaca9c | 526 | s->name, s->aliases, s->order, s->objects); |
a87615b8 CL |
527 | if (s->hwcache_align) |
528 | printf("** Hardware cacheline aligned\n"); | |
529 | if (s->cache_dma) | |
530 | printf("** Memory is allocated in a special DMA zone\n"); | |
531 | if (s->destroy_by_rcu) | |
532 | printf("** Slabs are destroyed via RCU\n"); | |
533 | if (s->reclaim_account) | |
534 | printf("** Reclaim accounting active\n"); | |
535 | ||
536 | printf("\nSizes (bytes) Slabs Debug Memory\n"); | |
537 | printf("------------------------------------------------------------------------\n"); | |
538 | printf("Object : %7d Total : %7ld Sanity Checks : %s Total: %7ld\n", | |
539 | s->object_size, s->slabs, onoff(s->sanity_checks), | |
540 | s->slabs * (page_size << s->order)); | |
541 | printf("SlabObj: %7d Full : %7ld Redzoning : %s Used : %7ld\n", | |
542 | s->slab_size, s->slabs - s->partial - s->cpu_slabs, | |
543 | onoff(s->red_zone), s->objects * s->object_size); | |
544 | printf("SlabSiz: %7d Partial: %7ld Poisoning : %s Loss : %7ld\n", | |
545 | page_size << s->order, s->partial, onoff(s->poison), | |
546 | s->slabs * (page_size << s->order) - s->objects * s->object_size); | |
547 | printf("Loss : %7d CpuSlab: %7d Tracking : %s Lalig: %7ld\n", | |
548 | s->slab_size - s->object_size, s->cpu_slabs, onoff(s->store_user), | |
549 | (s->slab_size - s->object_size) * s->objects); | |
550 | printf("Align : %7d Objects: %7d Tracing : %s Lpadd: %7ld\n", | |
551 | s->align, s->objs_per_slab, onoff(s->trace), | |
552 | ((page_size << s->order) - s->objs_per_slab * s->slab_size) * | |
553 | s->slabs); | |
554 | ||
555 | ops(s); | |
556 | show_tracking(s); | |
557 | slab_numa(s, 1); | |
8ff12cfc | 558 | slab_stats(s); |
a87615b8 | 559 | } |
c09d8751 | 560 | |
b7ed698c | 561 | static void slabcache(struct slabinfo *s) |
c09d8751 CL |
562 | { |
563 | char size_str[20]; | |
564 | char dist_str[40]; | |
565 | char flags[20]; | |
566 | char *p = flags; | |
567 | ||
a87615b8 CL |
568 | if (strcmp(s->name, "*") == 0) |
569 | return; | |
570 | ||
571 | if (actual_slabs == 1) { | |
572 | report(s); | |
573 | return; | |
574 | } | |
575 | ||
576 | if (skip_zero && !show_empty && !s->slabs) | |
577 | return; | |
578 | ||
579 | if (show_empty && s->slabs) | |
c09d8751 CL |
580 | return; |
581 | ||
2651f6e7 SS |
582 | if (sort_loss == 0) |
583 | store_size(size_str, slab_size(s)); | |
584 | else | |
585 | store_size(size_str, slab_waste(s)); | |
205ab99d CL |
586 | snprintf(dist_str, 40, "%lu/%lu/%d", s->slabs - s->cpu_slabs, |
587 | s->partial, s->cpu_slabs); | |
c09d8751 CL |
588 | |
589 | if (!line++) | |
590 | first_line(); | |
591 | ||
592 | if (s->aliases) | |
593 | *p++ = '*'; | |
594 | if (s->cache_dma) | |
595 | *p++ = 'd'; | |
596 | if (s->hwcache_align) | |
597 | *p++ = 'A'; | |
598 | if (s->poison) | |
599 | *p++ = 'P'; | |
600 | if (s->reclaim_account) | |
601 | *p++ = 'a'; | |
602 | if (s->red_zone) | |
603 | *p++ = 'Z'; | |
604 | if (s->sanity_checks) | |
605 | *p++ = 'F'; | |
606 | if (s->store_user) | |
607 | *p++ = 'U'; | |
608 | if (s->trace) | |
609 | *p++ = 'T'; | |
610 | ||
611 | *p = 0; | |
8ff12cfc CL |
612 | if (show_activity) { |
613 | unsigned long total_alloc; | |
614 | unsigned long total_free; | |
615 | ||
616 | total_alloc = s->alloc_fastpath + s->alloc_slowpath; | |
617 | total_free = s->free_fastpath + s->free_slowpath; | |
618 | ||
9da4714a | 619 | printf("%-21s %8ld %10ld %10ld %3ld %3ld %5ld %1d %4ld %4ld\n", |
8ff12cfc CL |
620 | s->name, s->objects, |
621 | total_alloc, total_free, | |
622 | total_alloc ? (s->alloc_fastpath * 100 / total_alloc) : 0, | |
f715e6f1 | 623 | total_free ? (s->free_fastpath * 100 / total_free) : 0, |
9da4714a CL |
624 | s->order_fallback, s->order, s->cmpxchg_double_fail, |
625 | s->cmpxchg_double_cpu_fail); | |
016c6cdf | 626 | } else { |
a8ea0bf1 | 627 | printf("%-21s %8ld %7d %15s %14s %4d %1d %3ld %3ld %s\n", |
8ff12cfc CL |
628 | s->name, s->objects, s->object_size, size_str, dist_str, |
629 | s->objs_per_slab, s->order, | |
630 | s->slabs ? (s->partial * 100) / s->slabs : 100, | |
631 | s->slabs ? (s->objects * s->object_size * 100) / | |
632 | (s->slabs * (page_size << s->order)) : 100, | |
633 | flags); | |
016c6cdf | 634 | } |
c09d8751 CL |
635 | } |
636 | ||
a87615b8 CL |
637 | /* |
638 | * Analyze debug options. Return false if something is amiss. | |
639 | */ | |
b7ed698c | 640 | static int debug_opt_scan(char *opt) |
c09d8751 | 641 | { |
a87615b8 CL |
642 | if (!opt || !opt[0] || strcmp(opt, "-") == 0) |
643 | return 1; | |
644 | ||
645 | if (strcasecmp(opt, "a") == 0) { | |
646 | sanity = 1; | |
647 | poison = 1; | |
648 | redzone = 1; | |
649 | tracking = 1; | |
650 | return 1; | |
651 | } | |
c09d8751 | 652 | |
a87615b8 | 653 | for ( ; *opt; opt++) |
0d24db33 | 654 | switch (*opt) { |
a87615b8 CL |
655 | case 'F' : case 'f': |
656 | if (sanity) | |
657 | return 0; | |
658 | sanity = 1; | |
659 | break; | |
660 | case 'P' : case 'p': | |
661 | if (poison) | |
662 | return 0; | |
663 | poison = 1; | |
664 | break; | |
c09d8751 | 665 | |
a87615b8 CL |
666 | case 'Z' : case 'z': |
667 | if (redzone) | |
668 | return 0; | |
669 | redzone = 1; | |
670 | break; | |
c09d8751 | 671 | |
a87615b8 CL |
672 | case 'U' : case 'u': |
673 | if (tracking) | |
674 | return 0; | |
675 | tracking = 1; | |
676 | break; | |
c09d8751 | 677 | |
a87615b8 CL |
678 | case 'T' : case 't': |
679 | if (tracing) | |
680 | return 0; | |
681 | tracing = 1; | |
682 | break; | |
683 | default: | |
684 | return 0; | |
685 | } | |
686 | return 1; | |
c09d8751 CL |
687 | } |
688 | ||
b7ed698c | 689 | static int slab_empty(struct slabinfo *s) |
c09d8751 | 690 | { |
a87615b8 CL |
691 | if (s->objects > 0) |
692 | return 0; | |
c09d8751 | 693 | |
a87615b8 CL |
694 | /* |
695 | * We may still have slabs even if there are no objects. Shrinking will | |
696 | * remove them. | |
697 | */ | |
698 | if (s->slabs != 0) | |
699 | set_obj(s, "shrink", 1); | |
c09d8751 | 700 | |
a87615b8 CL |
701 | return 1; |
702 | } | |
703 | ||
b7ed698c | 704 | static void slab_debug(struct slabinfo *s) |
a87615b8 | 705 | { |
32f9306b CL |
706 | if (strcmp(s->name, "*") == 0) |
707 | return; | |
708 | ||
a87615b8 CL |
709 | if (sanity && !s->sanity_checks) { |
710 | set_obj(s, "sanity", 1); | |
711 | } | |
712 | if (!sanity && s->sanity_checks) { | |
713 | if (slab_empty(s)) | |
714 | set_obj(s, "sanity", 0); | |
715 | else | |
716 | fprintf(stderr, "%s not empty cannot disable sanity checks\n", s->name); | |
717 | } | |
718 | if (redzone && !s->red_zone) { | |
719 | if (slab_empty(s)) | |
720 | set_obj(s, "red_zone", 1); | |
721 | else | |
722 | fprintf(stderr, "%s not empty cannot enable redzoning\n", s->name); | |
723 | } | |
724 | if (!redzone && s->red_zone) { | |
725 | if (slab_empty(s)) | |
726 | set_obj(s, "red_zone", 0); | |
727 | else | |
728 | fprintf(stderr, "%s not empty cannot disable redzoning\n", s->name); | |
729 | } | |
730 | if (poison && !s->poison) { | |
731 | if (slab_empty(s)) | |
732 | set_obj(s, "poison", 1); | |
733 | else | |
734 | fprintf(stderr, "%s not empty cannot enable poisoning\n", s->name); | |
735 | } | |
736 | if (!poison && s->poison) { | |
737 | if (slab_empty(s)) | |
738 | set_obj(s, "poison", 0); | |
739 | else | |
740 | fprintf(stderr, "%s not empty cannot disable poisoning\n", s->name); | |
741 | } | |
742 | if (tracking && !s->store_user) { | |
743 | if (slab_empty(s)) | |
744 | set_obj(s, "store_user", 1); | |
745 | else | |
746 | fprintf(stderr, "%s not empty cannot enable tracking\n", s->name); | |
747 | } | |
748 | if (!tracking && s->store_user) { | |
749 | if (slab_empty(s)) | |
750 | set_obj(s, "store_user", 0); | |
751 | else | |
752 | fprintf(stderr, "%s not empty cannot disable tracking\n", s->name); | |
753 | } | |
754 | if (tracing && !s->trace) { | |
755 | if (slabs == 1) | |
756 | set_obj(s, "trace", 1); | |
757 | else | |
758 | fprintf(stderr, "%s can only enable trace for one slab at a time\n", s->name); | |
759 | } | |
760 | if (!tracing && s->trace) | |
761 | set_obj(s, "trace", 1); | |
c09d8751 CL |
762 | } |
763 | ||
b7ed698c | 764 | static void totals(void) |
c09d8751 CL |
765 | { |
766 | struct slabinfo *s; | |
767 | ||
768 | int used_slabs = 0; | |
769 | char b1[20], b2[20], b3[20], b4[20]; | |
770 | unsigned long long max = 1ULL << 63; | |
771 | ||
772 | /* Object size */ | |
773 | unsigned long long min_objsize = max, max_objsize = 0, avg_objsize; | |
774 | ||
775 | /* Number of partial slabs in a slabcache */ | |
776 | unsigned long long min_partial = max, max_partial = 0, | |
777 | avg_partial, total_partial = 0; | |
778 | ||
779 | /* Number of slabs in a slab cache */ | |
780 | unsigned long long min_slabs = max, max_slabs = 0, | |
781 | avg_slabs, total_slabs = 0; | |
782 | ||
783 | /* Size of the whole slab */ | |
784 | unsigned long long min_size = max, max_size = 0, | |
785 | avg_size, total_size = 0; | |
786 | ||
787 | /* Bytes used for object storage in a slab */ | |
788 | unsigned long long min_used = max, max_used = 0, | |
789 | avg_used, total_used = 0; | |
790 | ||
791 | /* Waste: Bytes used for alignment and padding */ | |
792 | unsigned long long min_waste = max, max_waste = 0, | |
793 | avg_waste, total_waste = 0; | |
794 | /* Number of objects in a slab */ | |
795 | unsigned long long min_objects = max, max_objects = 0, | |
796 | avg_objects, total_objects = 0; | |
797 | /* Waste per object */ | |
798 | unsigned long long min_objwaste = max, | |
799 | max_objwaste = 0, avg_objwaste, | |
800 | total_objwaste = 0; | |
801 | ||
802 | /* Memory per object */ | |
803 | unsigned long long min_memobj = max, | |
804 | max_memobj = 0, avg_memobj, | |
805 | total_objsize = 0; | |
806 | ||
807 | /* Percentage of partial slabs per slab */ | |
808 | unsigned long min_ppart = 100, max_ppart = 0, | |
809 | avg_ppart, total_ppart = 0; | |
810 | ||
811 | /* Number of objects in partial slabs */ | |
812 | unsigned long min_partobj = max, max_partobj = 0, | |
813 | avg_partobj, total_partobj = 0; | |
814 | ||
815 | /* Percentage of partial objects of all objects in a slab */ | |
816 | unsigned long min_ppartobj = 100, max_ppartobj = 0, | |
817 | avg_ppartobj, total_ppartobj = 0; | |
818 | ||
819 | ||
820 | for (s = slabinfo; s < slabinfo + slabs; s++) { | |
821 | unsigned long long size; | |
822 | unsigned long used; | |
823 | unsigned long long wasted; | |
824 | unsigned long long objwaste; | |
c09d8751 CL |
825 | unsigned long percentage_partial_slabs; |
826 | unsigned long percentage_partial_objs; | |
827 | ||
828 | if (!s->slabs || !s->objects) | |
829 | continue; | |
830 | ||
831 | used_slabs++; | |
832 | ||
833 | size = slab_size(s); | |
834 | used = s->objects * s->object_size; | |
835 | wasted = size - used; | |
836 | objwaste = s->slab_size - s->object_size; | |
837 | ||
c09d8751 CL |
838 | percentage_partial_slabs = s->partial * 100 / s->slabs; |
839 | if (percentage_partial_slabs > 100) | |
840 | percentage_partial_slabs = 100; | |
841 | ||
205ab99d | 842 | percentage_partial_objs = s->objects_partial * 100 |
c09d8751 CL |
843 | / s->objects; |
844 | ||
845 | if (percentage_partial_objs > 100) | |
846 | percentage_partial_objs = 100; | |
847 | ||
848 | if (s->object_size < min_objsize) | |
849 | min_objsize = s->object_size; | |
850 | if (s->partial < min_partial) | |
851 | min_partial = s->partial; | |
852 | if (s->slabs < min_slabs) | |
853 | min_slabs = s->slabs; | |
854 | if (size < min_size) | |
855 | min_size = size; | |
856 | if (wasted < min_waste) | |
857 | min_waste = wasted; | |
858 | if (objwaste < min_objwaste) | |
859 | min_objwaste = objwaste; | |
860 | if (s->objects < min_objects) | |
861 | min_objects = s->objects; | |
862 | if (used < min_used) | |
863 | min_used = used; | |
205ab99d CL |
864 | if (s->objects_partial < min_partobj) |
865 | min_partobj = s->objects_partial; | |
c09d8751 CL |
866 | if (percentage_partial_slabs < min_ppart) |
867 | min_ppart = percentage_partial_slabs; | |
868 | if (percentage_partial_objs < min_ppartobj) | |
869 | min_ppartobj = percentage_partial_objs; | |
870 | if (s->slab_size < min_memobj) | |
871 | min_memobj = s->slab_size; | |
872 | ||
873 | if (s->object_size > max_objsize) | |
874 | max_objsize = s->object_size; | |
875 | if (s->partial > max_partial) | |
876 | max_partial = s->partial; | |
877 | if (s->slabs > max_slabs) | |
878 | max_slabs = s->slabs; | |
879 | if (size > max_size) | |
880 | max_size = size; | |
881 | if (wasted > max_waste) | |
882 | max_waste = wasted; | |
883 | if (objwaste > max_objwaste) | |
884 | max_objwaste = objwaste; | |
885 | if (s->objects > max_objects) | |
886 | max_objects = s->objects; | |
887 | if (used > max_used) | |
888 | max_used = used; | |
205ab99d CL |
889 | if (s->objects_partial > max_partobj) |
890 | max_partobj = s->objects_partial; | |
c09d8751 CL |
891 | if (percentage_partial_slabs > max_ppart) |
892 | max_ppart = percentage_partial_slabs; | |
893 | if (percentage_partial_objs > max_ppartobj) | |
894 | max_ppartobj = percentage_partial_objs; | |
895 | if (s->slab_size > max_memobj) | |
896 | max_memobj = s->slab_size; | |
897 | ||
898 | total_partial += s->partial; | |
899 | total_slabs += s->slabs; | |
900 | total_size += size; | |
901 | total_waste += wasted; | |
902 | ||
903 | total_objects += s->objects; | |
904 | total_used += used; | |
205ab99d | 905 | total_partobj += s->objects_partial; |
c09d8751 CL |
906 | total_ppart += percentage_partial_slabs; |
907 | total_ppartobj += percentage_partial_objs; | |
908 | ||
909 | total_objwaste += s->objects * objwaste; | |
910 | total_objsize += s->objects * s->slab_size; | |
911 | } | |
912 | ||
913 | if (!total_objects) { | |
914 | printf("No objects\n"); | |
915 | return; | |
916 | } | |
917 | if (!used_slabs) { | |
918 | printf("No slabs\n"); | |
919 | return; | |
920 | } | |
921 | ||
922 | /* Per slab averages */ | |
923 | avg_partial = total_partial / used_slabs; | |
924 | avg_slabs = total_slabs / used_slabs; | |
925 | avg_size = total_size / used_slabs; | |
926 | avg_waste = total_waste / used_slabs; | |
927 | ||
928 | avg_objects = total_objects / used_slabs; | |
929 | avg_used = total_used / used_slabs; | |
930 | avg_partobj = total_partobj / used_slabs; | |
931 | avg_ppart = total_ppart / used_slabs; | |
932 | avg_ppartobj = total_ppartobj / used_slabs; | |
933 | ||
934 | /* Per object object sizes */ | |
935 | avg_objsize = total_used / total_objects; | |
936 | avg_objwaste = total_objwaste / total_objects; | |
937 | avg_partobj = total_partobj * 100 / total_objects; | |
938 | avg_memobj = total_objsize / total_objects; | |
939 | ||
940 | printf("Slabcache Totals\n"); | |
941 | printf("----------------\n"); | |
a8ea0bf1 | 942 | printf("Slabcaches : %15d Aliases : %11d->%-3d Active: %3d\n", |
c09d8751 CL |
943 | slabs, aliases, alias_targets, used_slabs); |
944 | ||
945 | store_size(b1, total_size);store_size(b2, total_waste); | |
946 | store_size(b3, total_waste * 100 / total_used); | |
a8ea0bf1 | 947 | printf("Memory used: %15s # Loss : %15s MRatio:%6s%%\n", b1, b2, b3); |
c09d8751 CL |
948 | |
949 | store_size(b1, total_objects);store_size(b2, total_partobj); | |
950 | store_size(b3, total_partobj * 100 / total_objects); | |
a8ea0bf1 | 951 | printf("# Objects : %15s # PartObj: %15s ORatio:%6s%%\n", b1, b2, b3); |
c09d8751 CL |
952 | |
953 | printf("\n"); | |
a8ea0bf1 SS |
954 | printf("Per Cache Average " |
955 | "Min Max Total\n"); | |
956 | printf("---------------------------------------" | |
957 | "-------------------------------------\n"); | |
c09d8751 CL |
958 | |
959 | store_size(b1, avg_objects);store_size(b2, min_objects); | |
960 | store_size(b3, max_objects);store_size(b4, total_objects); | |
a8ea0bf1 | 961 | printf("#Objects %15s %15s %15s %15s\n", |
c09d8751 CL |
962 | b1, b2, b3, b4); |
963 | ||
964 | store_size(b1, avg_slabs);store_size(b2, min_slabs); | |
965 | store_size(b3, max_slabs);store_size(b4, total_slabs); | |
a8ea0bf1 | 966 | printf("#Slabs %15s %15s %15s %15s\n", |
c09d8751 CL |
967 | b1, b2, b3, b4); |
968 | ||
969 | store_size(b1, avg_partial);store_size(b2, min_partial); | |
970 | store_size(b3, max_partial);store_size(b4, total_partial); | |
a8ea0bf1 | 971 | printf("#PartSlab %15s %15s %15s %15s\n", |
c09d8751 CL |
972 | b1, b2, b3, b4); |
973 | store_size(b1, avg_ppart);store_size(b2, min_ppart); | |
974 | store_size(b3, max_ppart); | |
975 | store_size(b4, total_partial * 100 / total_slabs); | |
a8ea0bf1 | 976 | printf("%%PartSlab%15s%% %15s%% %15s%% %15s%%\n", |
c09d8751 CL |
977 | b1, b2, b3, b4); |
978 | ||
979 | store_size(b1, avg_partobj);store_size(b2, min_partobj); | |
980 | store_size(b3, max_partobj); | |
981 | store_size(b4, total_partobj); | |
a8ea0bf1 | 982 | printf("PartObjs %15s %15s %15s %15s\n", |
c09d8751 CL |
983 | b1, b2, b3, b4); |
984 | ||
985 | store_size(b1, avg_ppartobj);store_size(b2, min_ppartobj); | |
986 | store_size(b3, max_ppartobj); | |
987 | store_size(b4, total_partobj * 100 / total_objects); | |
a8ea0bf1 | 988 | printf("%% PartObj%15s%% %15s%% %15s%% %15s%%\n", |
c09d8751 CL |
989 | b1, b2, b3, b4); |
990 | ||
991 | store_size(b1, avg_size);store_size(b2, min_size); | |
992 | store_size(b3, max_size);store_size(b4, total_size); | |
a8ea0bf1 | 993 | printf("Memory %15s %15s %15s %15s\n", |
c09d8751 CL |
994 | b1, b2, b3, b4); |
995 | ||
996 | store_size(b1, avg_used);store_size(b2, min_used); | |
997 | store_size(b3, max_used);store_size(b4, total_used); | |
a8ea0bf1 | 998 | printf("Used %15s %15s %15s %15s\n", |
c09d8751 CL |
999 | b1, b2, b3, b4); |
1000 | ||
1001 | store_size(b1, avg_waste);store_size(b2, min_waste); | |
1002 | store_size(b3, max_waste);store_size(b4, total_waste); | |
a8ea0bf1 | 1003 | printf("Loss %15s %15s %15s %15s\n", |
c09d8751 CL |
1004 | b1, b2, b3, b4); |
1005 | ||
1006 | printf("\n"); | |
a8ea0bf1 SS |
1007 | printf("Per Object Average " |
1008 | "Min Max\n"); | |
1009 | printf("---------------------------------------" | |
1010 | "--------------------\n"); | |
c09d8751 CL |
1011 | |
1012 | store_size(b1, avg_memobj);store_size(b2, min_memobj); | |
1013 | store_size(b3, max_memobj); | |
a8ea0bf1 | 1014 | printf("Memory %15s %15s %15s\n", |
c09d8751 CL |
1015 | b1, b2, b3); |
1016 | store_size(b1, avg_objsize);store_size(b2, min_objsize); | |
1017 | store_size(b3, max_objsize); | |
a8ea0bf1 | 1018 | printf("User %15s %15s %15s\n", |
c09d8751 CL |
1019 | b1, b2, b3); |
1020 | ||
1021 | store_size(b1, avg_objwaste);store_size(b2, min_objwaste); | |
1022 | store_size(b3, max_objwaste); | |
a8ea0bf1 | 1023 | printf("Loss %15s %15s %15s\n", |
c09d8751 CL |
1024 | b1, b2, b3); |
1025 | } | |
1026 | ||
b7ed698c | 1027 | static void sort_slabs(void) |
c09d8751 CL |
1028 | { |
1029 | struct slabinfo *s1,*s2; | |
1030 | ||
1031 | for (s1 = slabinfo; s1 < slabinfo + slabs; s1++) { | |
1032 | for (s2 = s1 + 1; s2 < slabinfo + slabs; s2++) { | |
1033 | int result; | |
1034 | ||
1035 | if (sort_size) | |
1036 | result = slab_size(s1) < slab_size(s2); | |
8ff12cfc CL |
1037 | else if (sort_active) |
1038 | result = slab_activity(s1) < slab_activity(s2); | |
2651f6e7 SS |
1039 | else if (sort_loss) |
1040 | result = slab_waste(s1) < slab_waste(s2); | |
c09d8751 CL |
1041 | else |
1042 | result = strcasecmp(s1->name, s2->name); | |
1043 | ||
1044 | if (show_inverted) | |
1045 | result = -result; | |
1046 | ||
1047 | if (result > 0) { | |
1048 | struct slabinfo t; | |
1049 | ||
1050 | memcpy(&t, s1, sizeof(struct slabinfo)); | |
1051 | memcpy(s1, s2, sizeof(struct slabinfo)); | |
1052 | memcpy(s2, &t, sizeof(struct slabinfo)); | |
1053 | } | |
1054 | } | |
1055 | } | |
1056 | } | |
1057 | ||
b7ed698c | 1058 | static void sort_aliases(void) |
c09d8751 CL |
1059 | { |
1060 | struct aliasinfo *a1,*a2; | |
1061 | ||
1062 | for (a1 = aliasinfo; a1 < aliasinfo + aliases; a1++) { | |
1063 | for (a2 = a1 + 1; a2 < aliasinfo + aliases; a2++) { | |
1064 | char *n1, *n2; | |
1065 | ||
1066 | n1 = a1->name; | |
1067 | n2 = a2->name; | |
1068 | if (show_alias && !show_inverted) { | |
1069 | n1 = a1->ref; | |
1070 | n2 = a2->ref; | |
1071 | } | |
1072 | if (strcasecmp(n1, n2) > 0) { | |
1073 | struct aliasinfo t; | |
1074 | ||
1075 | memcpy(&t, a1, sizeof(struct aliasinfo)); | |
1076 | memcpy(a1, a2, sizeof(struct aliasinfo)); | |
1077 | memcpy(a2, &t, sizeof(struct aliasinfo)); | |
1078 | } | |
1079 | } | |
1080 | } | |
1081 | } | |
1082 | ||
b7ed698c | 1083 | static void link_slabs(void) |
c09d8751 CL |
1084 | { |
1085 | struct aliasinfo *a; | |
1086 | struct slabinfo *s; | |
1087 | ||
1088 | for (a = aliasinfo; a < aliasinfo + aliases; a++) { | |
1089 | ||
a87615b8 | 1090 | for (s = slabinfo; s < slabinfo + slabs; s++) |
c09d8751 CL |
1091 | if (strcmp(a->ref, s->name) == 0) { |
1092 | a->slab = s; | |
1093 | s->refs++; | |
1094 | break; | |
1095 | } | |
1096 | if (s == slabinfo + slabs) | |
1097 | fatal("Unresolved alias %s\n", a->ref); | |
1098 | } | |
1099 | } | |
1100 | ||
b7ed698c | 1101 | static void alias(void) |
c09d8751 CL |
1102 | { |
1103 | struct aliasinfo *a; | |
1104 | char *active = NULL; | |
1105 | ||
1106 | sort_aliases(); | |
1107 | link_slabs(); | |
1108 | ||
1109 | for(a = aliasinfo; a < aliasinfo + aliases; a++) { | |
1110 | ||
1111 | if (!show_single_ref && a->slab->refs == 1) | |
1112 | continue; | |
1113 | ||
1114 | if (!show_inverted) { | |
1115 | if (active) { | |
1116 | if (strcmp(a->slab->name, active) == 0) { | |
1117 | printf(" %s", a->name); | |
1118 | continue; | |
1119 | } | |
1120 | } | |
a87615b8 | 1121 | printf("\n%-12s <- %s", a->slab->name, a->name); |
c09d8751 CL |
1122 | active = a->slab->name; |
1123 | } | |
1124 | else | |
a8ea0bf1 | 1125 | printf("%-15s -> %s\n", a->name, a->slab->name); |
c09d8751 CL |
1126 | } |
1127 | if (active) | |
1128 | printf("\n"); | |
1129 | } | |
1130 | ||
1131 | ||
b7ed698c | 1132 | static void rename_slabs(void) |
c09d8751 CL |
1133 | { |
1134 | struct slabinfo *s; | |
1135 | struct aliasinfo *a; | |
1136 | ||
1137 | for (s = slabinfo; s < slabinfo + slabs; s++) { | |
1138 | if (*s->name != ':') | |
1139 | continue; | |
1140 | ||
1141 | if (s->refs > 1 && !show_first_alias) | |
1142 | continue; | |
1143 | ||
1144 | a = find_one_alias(s); | |
1145 | ||
a87615b8 CL |
1146 | if (a) |
1147 | s->name = a->name; | |
1148 | else { | |
1149 | s->name = "*"; | |
1150 | actual_slabs--; | |
1151 | } | |
c09d8751 CL |
1152 | } |
1153 | } | |
1154 | ||
b7ed698c | 1155 | static int slab_mismatch(char *slab) |
c09d8751 CL |
1156 | { |
1157 | return regexec(&pattern, slab, 0, NULL, 0); | |
1158 | } | |
1159 | ||
b7ed698c | 1160 | static void read_slab_dir(void) |
c09d8751 CL |
1161 | { |
1162 | DIR *dir; | |
1163 | struct dirent *de; | |
1164 | struct slabinfo *slab = slabinfo; | |
1165 | struct aliasinfo *alias = aliasinfo; | |
1166 | char *p; | |
1167 | char *t; | |
1168 | int count; | |
1169 | ||
b6c24de7 | 1170 | if (chdir("/sys/kernel/slab") && chdir("/sys/slab")) |
a87615b8 CL |
1171 | fatal("SYSFS support for SLUB not active\n"); |
1172 | ||
c09d8751 CL |
1173 | dir = opendir("."); |
1174 | while ((de = readdir(dir))) { | |
1175 | if (de->d_name[0] == '.' || | |
a87615b8 CL |
1176 | (de->d_name[0] != ':' && slab_mismatch(de->d_name))) |
1177 | continue; | |
c09d8751 CL |
1178 | switch (de->d_type) { |
1179 | case DT_LNK: | |
0d24db33 | 1180 | alias->name = strdup(de->d_name); |
fe353178 | 1181 | count = readlink(de->d_name, buffer, sizeof(buffer)-1); |
c09d8751 CL |
1182 | |
1183 | if (count < 0) | |
1184 | fatal("Cannot read symlink %s\n", de->d_name); | |
1185 | ||
1186 | buffer[count] = 0; | |
1187 | p = buffer + count; | |
1188 | while (p > buffer && p[-1] != '/') | |
1189 | p--; | |
1190 | alias->ref = strdup(p); | |
1191 | alias++; | |
1192 | break; | |
1193 | case DT_DIR: | |
1194 | if (chdir(de->d_name)) | |
1195 | fatal("Unable to access slab %s\n", slab->name); | |
0d24db33 | 1196 | slab->name = strdup(de->d_name); |
c09d8751 CL |
1197 | slab->alias = 0; |
1198 | slab->refs = 0; | |
1199 | slab->aliases = get_obj("aliases"); | |
1200 | slab->align = get_obj("align"); | |
1201 | slab->cache_dma = get_obj("cache_dma"); | |
1202 | slab->cpu_slabs = get_obj("cpu_slabs"); | |
1203 | slab->destroy_by_rcu = get_obj("destroy_by_rcu"); | |
1204 | slab->hwcache_align = get_obj("hwcache_align"); | |
1205 | slab->object_size = get_obj("object_size"); | |
1206 | slab->objects = get_obj("objects"); | |
205ab99d CL |
1207 | slab->objects_partial = get_obj("objects_partial"); |
1208 | slab->objects_total = get_obj("objects_total"); | |
c09d8751 CL |
1209 | slab->objs_per_slab = get_obj("objs_per_slab"); |
1210 | slab->order = get_obj("order"); | |
1211 | slab->partial = get_obj("partial"); | |
1212 | slab->partial = get_obj_and_str("partial", &t); | |
1213 | decode_numa_list(slab->numa_partial, t); | |
f32143a2 | 1214 | free(t); |
c09d8751 CL |
1215 | slab->poison = get_obj("poison"); |
1216 | slab->reclaim_account = get_obj("reclaim_account"); | |
1217 | slab->red_zone = get_obj("red_zone"); | |
1218 | slab->sanity_checks = get_obj("sanity_checks"); | |
1219 | slab->slab_size = get_obj("slab_size"); | |
1220 | slab->slabs = get_obj_and_str("slabs", &t); | |
1221 | decode_numa_list(slab->numa, t); | |
f32143a2 | 1222 | free(t); |
c09d8751 CL |
1223 | slab->store_user = get_obj("store_user"); |
1224 | slab->trace = get_obj("trace"); | |
8ff12cfc CL |
1225 | slab->alloc_fastpath = get_obj("alloc_fastpath"); |
1226 | slab->alloc_slowpath = get_obj("alloc_slowpath"); | |
1227 | slab->free_fastpath = get_obj("free_fastpath"); | |
1228 | slab->free_slowpath = get_obj("free_slowpath"); | |
1229 | slab->free_frozen= get_obj("free_frozen"); | |
1230 | slab->free_add_partial = get_obj("free_add_partial"); | |
1231 | slab->free_remove_partial = get_obj("free_remove_partial"); | |
1232 | slab->alloc_from_partial = get_obj("alloc_from_partial"); | |
1233 | slab->alloc_slab = get_obj("alloc_slab"); | |
1234 | slab->alloc_refill = get_obj("alloc_refill"); | |
1235 | slab->free_slab = get_obj("free_slab"); | |
1236 | slab->cpuslab_flush = get_obj("cpuslab_flush"); | |
1237 | slab->deactivate_full = get_obj("deactivate_full"); | |
1238 | slab->deactivate_empty = get_obj("deactivate_empty"); | |
1239 | slab->deactivate_to_head = get_obj("deactivate_to_head"); | |
1240 | slab->deactivate_to_tail = get_obj("deactivate_to_tail"); | |
1241 | slab->deactivate_remote_frees = get_obj("deactivate_remote_frees"); | |
f715e6f1 | 1242 | slab->order_fallback = get_obj("order_fallback"); |
9da4714a CL |
1243 | slab->cmpxchg_double_cpu_fail = get_obj("cmpxchg_double_cpu_fail"); |
1244 | slab->cmpxchg_double_fail = get_obj("cmpxchg_double_fail"); | |
aca726a0 CL |
1245 | slab->cpu_partial_alloc = get_obj("cpu_partial_alloc"); |
1246 | slab->cpu_partial_free = get_obj("cpu_partial_free"); | |
9da4714a CL |
1247 | slab->alloc_node_mismatch = get_obj("alloc_node_mismatch"); |
1248 | slab->deactivate_bypass = get_obj("deactivate_bypass"); | |
c09d8751 CL |
1249 | chdir(".."); |
1250 | if (slab->name[0] == ':') | |
1251 | alias_targets++; | |
1252 | slab++; | |
1253 | break; | |
1254 | default : | |
1255 | fatal("Unknown file type %lx\n", de->d_type); | |
1256 | } | |
1257 | } | |
1258 | closedir(dir); | |
1259 | slabs = slab - slabinfo; | |
a87615b8 | 1260 | actual_slabs = slabs; |
c09d8751 CL |
1261 | aliases = alias - aliasinfo; |
1262 | if (slabs > MAX_SLABS) | |
1263 | fatal("Too many slabs\n"); | |
1264 | if (aliases > MAX_ALIASES) | |
1265 | fatal("Too many aliases\n"); | |
1266 | } | |
1267 | ||
b7ed698c | 1268 | static void output_slabs(void) |
c09d8751 CL |
1269 | { |
1270 | struct slabinfo *slab; | |
016c6cdf | 1271 | int lines = output_lines; |
c09d8751 | 1272 | |
4980a963 | 1273 | for (slab = slabinfo; (slab < slabinfo + slabs) && |
016c6cdf | 1274 | lines != 0; slab++) { |
c09d8751 CL |
1275 | |
1276 | if (slab->alias) | |
1277 | continue; | |
1278 | ||
016c6cdf SS |
1279 | if (lines != -1) |
1280 | lines--; | |
c09d8751 CL |
1281 | |
1282 | if (show_numa) | |
a87615b8 CL |
1283 | slab_numa(slab, 0); |
1284 | else if (show_track) | |
c09d8751 | 1285 | show_tracking(slab); |
a87615b8 | 1286 | else if (validate) |
c09d8751 | 1287 | slab_validate(slab); |
a87615b8 | 1288 | else if (shrink) |
c09d8751 | 1289 | slab_shrink(slab); |
a87615b8 CL |
1290 | else if (set_debug) |
1291 | slab_debug(slab); | |
1292 | else if (show_ops) | |
1293 | ops(slab); | |
1294 | else if (show_slab) | |
1295 | slabcache(slab); | |
eefaca9c CL |
1296 | else if (show_report) |
1297 | report(slab); | |
c09d8751 CL |
1298 | } |
1299 | } | |
1300 | ||
016c6cdf SS |
1301 | static void xtotals(void) |
1302 | { | |
1303 | totals(); | |
1304 | ||
1305 | link_slabs(); | |
1306 | rename_slabs(); | |
1307 | ||
1308 | printf("\nSlabs sorted by size\n"); | |
a8ea0bf1 | 1309 | printf("--------------------\n"); |
016c6cdf SS |
1310 | sort_loss = 0; |
1311 | sort_size = 1; | |
1312 | sort_slabs(); | |
1313 | output_slabs(); | |
1314 | ||
1315 | printf("\nSlabs sorted by loss\n"); | |
a8ea0bf1 | 1316 | printf("--------------------\n"); |
016c6cdf SS |
1317 | line = 0; |
1318 | sort_loss = 1; | |
1319 | sort_size = 0; | |
1320 | sort_slabs(); | |
1321 | output_slabs(); | |
1322 | printf("\n"); | |
1323 | } | |
1324 | ||
c09d8751 | 1325 | struct option opts[] = { |
2b100755 SS |
1326 | { "aliases", no_argument, NULL, 'a' }, |
1327 | { "activity", no_argument, NULL, 'A' }, | |
1328 | { "debug", optional_argument, NULL, 'd' }, | |
1329 | { "display-activity", no_argument, NULL, 'D' }, | |
1330 | { "empty", no_argument, NULL, 'e' }, | |
1331 | { "first-alias", no_argument, NULL, 'f' }, | |
1332 | { "help", no_argument, NULL, 'h' }, | |
1333 | { "inverted", no_argument, NULL, 'i'}, | |
0d00bf58 | 1334 | { "slabs", no_argument, NULL, 'l' }, |
2b100755 SS |
1335 | { "numa", no_argument, NULL, 'n' }, |
1336 | { "ops", no_argument, NULL, 'o' }, | |
2b100755 | 1337 | { "shrink", no_argument, NULL, 's' }, |
0d00bf58 SS |
1338 | { "report", no_argument, NULL, 'r' }, |
1339 | { "Size", no_argument, NULL, 'S'}, | |
1340 | { "tracking", no_argument, NULL, 't'}, | |
1341 | { "Totals", no_argument, NULL, 'T'}, | |
2b100755 SS |
1342 | { "validate", no_argument, NULL, 'v' }, |
1343 | { "zero", no_argument, NULL, 'z' }, | |
1344 | { "1ref", no_argument, NULL, '1'}, | |
4980a963 | 1345 | { "lines", required_argument, NULL, 'N'}, |
2651f6e7 | 1346 | { "Loss", no_argument, NULL, 'L'}, |
016c6cdf | 1347 | { "Xtotals", no_argument, NULL, 'X'}, |
a8ea0bf1 | 1348 | { "Bytes", no_argument, NULL, 'B'}, |
c09d8751 CL |
1349 | { NULL, 0, NULL, 0 } |
1350 | }; | |
1351 | ||
1352 | int main(int argc, char *argv[]) | |
1353 | { | |
1354 | int c; | |
1355 | int err; | |
1356 | char *pattern_source; | |
1357 | ||
1358 | page_size = getpagesize(); | |
c09d8751 | 1359 | |
a8ea0bf1 | 1360 | while ((c = getopt_long(argc, argv, "aAd::Defhil1noprstvzTSN:LXB", |
a87615b8 | 1361 | opts, NULL)) != -1) |
f32143a2 | 1362 | switch (c) { |
c09d8751 CL |
1363 | case '1': |
1364 | show_single_ref = 1; | |
1365 | break; | |
1366 | case 'a': | |
1367 | show_alias = 1; | |
1368 | break; | |
8ff12cfc CL |
1369 | case 'A': |
1370 | sort_active = 1; | |
1371 | break; | |
a87615b8 CL |
1372 | case 'd': |
1373 | set_debug = 1; | |
1374 | if (!debug_opt_scan(optarg)) | |
1375 | fatal("Invalid debug option '%s'\n", optarg); | |
1376 | break; | |
8ff12cfc CL |
1377 | case 'D': |
1378 | show_activity = 1; | |
1379 | break; | |
a87615b8 CL |
1380 | case 'e': |
1381 | show_empty = 1; | |
1382 | break; | |
c09d8751 CL |
1383 | case 'f': |
1384 | show_first_alias = 1; | |
1385 | break; | |
1386 | case 'h': | |
1387 | usage(); | |
1388 | return 0; | |
1389 | case 'i': | |
1390 | show_inverted = 1; | |
1391 | break; | |
1392 | case 'n': | |
1393 | show_numa = 1; | |
1394 | break; | |
a87615b8 CL |
1395 | case 'o': |
1396 | show_ops = 1; | |
1397 | break; | |
1398 | case 'r': | |
1399 | show_report = 1; | |
1400 | break; | |
c09d8751 CL |
1401 | case 's': |
1402 | shrink = 1; | |
1403 | break; | |
1404 | case 'l': | |
1405 | show_slab = 1; | |
1406 | break; | |
1407 | case 't': | |
1408 | show_track = 1; | |
1409 | break; | |
1410 | case 'v': | |
1411 | validate = 1; | |
1412 | break; | |
1413 | case 'z': | |
1414 | skip_zero = 0; | |
1415 | break; | |
1416 | case 'T': | |
1417 | show_totals = 1; | |
1418 | break; | |
1419 | case 'S': | |
1420 | sort_size = 1; | |
1421 | break; | |
4980a963 SS |
1422 | case 'N': |
1423 | if (optarg) { | |
1424 | output_lines = atoi(optarg); | |
1425 | if (output_lines < 1) | |
1426 | output_lines = 1; | |
1427 | } | |
1428 | break; | |
2651f6e7 SS |
1429 | case 'L': |
1430 | sort_loss = 1; | |
1431 | break; | |
016c6cdf SS |
1432 | case 'X': |
1433 | if (output_lines == -1) | |
1434 | output_lines = 1; | |
1435 | extended_totals = 1; | |
a8ea0bf1 SS |
1436 | show_bytes = 1; |
1437 | break; | |
1438 | case 'B': | |
1439 | show_bytes = 1; | |
016c6cdf | 1440 | break; |
c09d8751 CL |
1441 | default: |
1442 | fatal("%s: Invalid option '%c'\n", argv[0], optopt); | |
1443 | ||
1444 | } | |
1445 | ||
a87615b8 CL |
1446 | if (!show_slab && !show_alias && !show_track && !show_report |
1447 | && !validate && !shrink && !set_debug && !show_ops) | |
c09d8751 CL |
1448 | show_slab = 1; |
1449 | ||
1450 | if (argc > optind) | |
1451 | pattern_source = argv[optind]; | |
1452 | else | |
1453 | pattern_source = ".*"; | |
1454 | ||
1455 | err = regcomp(&pattern, pattern_source, REG_ICASE|REG_NOSUB); | |
1456 | if (err) | |
1457 | fatal("%s: Invalid pattern '%s' code %d\n", | |
1458 | argv[0], pattern_source, err); | |
1459 | read_slab_dir(); | |
016c6cdf | 1460 | if (show_alias) { |
c09d8751 | 1461 | alias(); |
016c6cdf SS |
1462 | } else if (extended_totals) { |
1463 | xtotals(); | |
1464 | } else if (show_totals) { | |
c09d8751 | 1465 | totals(); |
016c6cdf | 1466 | } else { |
c09d8751 CL |
1467 | link_slabs(); |
1468 | rename_slabs(); | |
1469 | sort_slabs(); | |
1470 | output_slabs(); | |
1471 | } | |
1472 | return 0; | |
1473 | } |