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Commit | Line | Data |
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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
c09d8751 CL |
2 | /* |
3 | * Slabinfo: Tool to get reports about slabs | |
4 | * | |
cde53535 | 5 | * (C) 2007 sgi, Christoph Lameter |
9da4714a | 6 | * (C) 2011 Linux Foundation, Christoph Lameter |
c09d8751 | 7 | * |
9da4714a | 8 | * Compile with: |
c09d8751 CL |
9 | * |
10 | * gcc -o slabinfo slabinfo.c | |
11 | */ | |
12 | #include <stdio.h> | |
13 | #include <stdlib.h> | |
14 | #include <sys/types.h> | |
15 | #include <dirent.h> | |
f32143a2 | 16 | #include <strings.h> |
c09d8751 CL |
17 | #include <string.h> |
18 | #include <unistd.h> | |
19 | #include <stdarg.h> | |
20 | #include <getopt.h> | |
21 | #include <regex.h> | |
a87615b8 | 22 | #include <errno.h> |
c09d8751 CL |
23 | |
24 | #define MAX_SLABS 500 | |
25 | #define MAX_ALIASES 500 | |
26 | #define MAX_NODES 1024 | |
27 | ||
28 | struct slabinfo { | |
29 | char *name; | |
30 | int alias; | |
31 | int refs; | |
32 | int aliases, align, cache_dma, cpu_slabs, destroy_by_rcu; | |
33 | int hwcache_align, object_size, objs_per_slab; | |
34 | int sanity_checks, slab_size, store_user, trace; | |
35 | int order, poison, reclaim_account, red_zone; | |
205ab99d | 36 | unsigned long partial, objects, slabs, objects_partial, objects_total; |
8ff12cfc CL |
37 | unsigned long alloc_fastpath, alloc_slowpath; |
38 | unsigned long free_fastpath, free_slowpath; | |
39 | unsigned long free_frozen, free_add_partial, free_remove_partial; | |
40 | unsigned long alloc_from_partial, alloc_slab, free_slab, alloc_refill; | |
41 | unsigned long cpuslab_flush, deactivate_full, deactivate_empty; | |
42 | unsigned long deactivate_to_head, deactivate_to_tail; | |
f715e6f1 | 43 | unsigned long deactivate_remote_frees, order_fallback; |
9da4714a CL |
44 | unsigned long cmpxchg_double_cpu_fail, cmpxchg_double_fail; |
45 | unsigned long alloc_node_mismatch, deactivate_bypass; | |
aca726a0 | 46 | unsigned long cpu_partial_alloc, cpu_partial_free; |
c09d8751 CL |
47 | int numa[MAX_NODES]; |
48 | int numa_partial[MAX_NODES]; | |
49 | } slabinfo[MAX_SLABS]; | |
50 | ||
51 | struct aliasinfo { | |
52 | char *name; | |
53 | char *ref; | |
54 | struct slabinfo *slab; | |
55 | } aliasinfo[MAX_ALIASES]; | |
56 | ||
2cee611a SS |
57 | int slabs; |
58 | int actual_slabs; | |
59 | int aliases; | |
60 | int alias_targets; | |
61 | int highest_node; | |
c09d8751 CL |
62 | |
63 | char buffer[4096]; | |
64 | ||
2cee611a SS |
65 | int show_empty; |
66 | int show_report; | |
67 | int show_alias; | |
68 | int show_slab; | |
c09d8751 | 69 | int skip_zero = 1; |
2cee611a SS |
70 | int show_numa; |
71 | int show_track; | |
72 | int show_first_alias; | |
73 | int validate; | |
74 | int shrink; | |
75 | int show_inverted; | |
76 | int show_single_ref; | |
77 | int show_totals; | |
78 | int sort_size; | |
79 | int sort_active; | |
80 | int set_debug; | |
81 | int show_ops; | |
82 | int show_activity; | |
4980a963 | 83 | int output_lines = -1; |
2651f6e7 | 84 | int sort_loss; |
016c6cdf | 85 | int extended_totals; |
a8ea0bf1 | 86 | int show_bytes; |
a87615b8 CL |
87 | |
88 | /* Debug options */ | |
2cee611a SS |
89 | int sanity; |
90 | int redzone; | |
91 | int poison; | |
92 | int tracking; | |
93 | int tracing; | |
c09d8751 CL |
94 | |
95 | int page_size; | |
96 | ||
97 | regex_t pattern; | |
98 | ||
b7ed698c | 99 | static void fatal(const char *x, ...) |
c09d8751 CL |
100 | { |
101 | va_list ap; | |
102 | ||
103 | va_start(ap, x); | |
104 | vfprintf(stderr, x, ap); | |
105 | va_end(ap); | |
f32143a2 | 106 | exit(EXIT_FAILURE); |
c09d8751 CL |
107 | } |
108 | ||
b7ed698c | 109 | static void usage(void) |
c09d8751 | 110 | { |
9da4714a | 111 | printf("slabinfo 4/15/2011. (c) 2007 sgi/(c) 2011 Linux Foundation.\n\n" |
a87615b8 | 112 | "slabinfo [-ahnpvtsz] [-d debugopts] [slab-regexp]\n" |
c09d8751 | 113 | "-a|--aliases Show aliases\n" |
8ff12cfc | 114 | "-A|--activity Most active slabs first\n" |
a87615b8 | 115 | "-d<options>|--debug=<options> Set/Clear Debug options\n" |
8ff12cfc CL |
116 | "-D|--display-active Switch line format to activity\n" |
117 | "-e|--empty Show empty slabs\n" | |
a87615b8 | 118 | "-f|--first-alias Show first alias\n" |
c09d8751 | 119 | "-h|--help Show usage information\n" |
a87615b8 CL |
120 | "-i|--inverted Inverted list\n" |
121 | "-l|--slabs Show slabs\n" | |
c09d8751 | 122 | "-n|--numa Show NUMA information\n" |
a87615b8 | 123 | "-o|--ops Show kmem_cache_ops\n" |
c09d8751 | 124 | "-s|--shrink Shrink slabs\n" |
a87615b8 CL |
125 | "-r|--report Detailed report on single slabs\n" |
126 | "-S|--Size Sort by size\n" | |
c09d8751 CL |
127 | "-t|--tracking Show alloc/free information\n" |
128 | "-T|--Totals Show summary information\n" | |
a87615b8 | 129 | "-v|--validate Validate slabs\n" |
c09d8751 | 130 | "-z|--zero Include empty slabs\n" |
c09d8751 | 131 | "-1|--1ref Single reference\n" |
4980a963 | 132 | "-N|--lines=K Show the first K slabs\n" |
2651f6e7 | 133 | "-L|--Loss Sort by loss\n" |
016c6cdf | 134 | "-X|--Xtotals Show extended summary information\n" |
a8ea0bf1 | 135 | "-B|--Bytes Show size in bytes\n" |
a87615b8 CL |
136 | "\nValid debug options (FZPUT may be combined)\n" |
137 | "a / A Switch on all debug options (=FZUP)\n" | |
138 | "- Switch off all debug options\n" | |
becfda68 | 139 | "f / F Sanity Checks (SLAB_CONSISTENCY_CHECKS)\n" |
a87615b8 CL |
140 | "z / Z Redzoning\n" |
141 | "p / P Poisoning\n" | |
142 | "u / U Tracking\n" | |
143 | "t / T Tracing\n" | |
c09d8751 CL |
144 | ); |
145 | } | |
146 | ||
b7ed698c | 147 | static unsigned long read_obj(const char *name) |
c09d8751 CL |
148 | { |
149 | FILE *f = fopen(name, "r"); | |
150 | ||
151 | if (!f) | |
152 | buffer[0] = 0; | |
153 | else { | |
f32143a2 | 154 | if (!fgets(buffer, sizeof(buffer), f)) |
c09d8751 CL |
155 | buffer[0] = 0; |
156 | fclose(f); | |
157 | if (buffer[strlen(buffer)] == '\n') | |
158 | buffer[strlen(buffer)] = 0; | |
159 | } | |
160 | return strlen(buffer); | |
161 | } | |
162 | ||
163 | ||
164 | /* | |
165 | * Get the contents of an attribute | |
166 | */ | |
b7ed698c | 167 | static unsigned long get_obj(const char *name) |
c09d8751 CL |
168 | { |
169 | if (!read_obj(name)) | |
170 | return 0; | |
171 | ||
172 | return atol(buffer); | |
173 | } | |
174 | ||
b7ed698c | 175 | static unsigned long get_obj_and_str(const char *name, char **x) |
c09d8751 CL |
176 | { |
177 | unsigned long result = 0; | |
178 | char *p; | |
179 | ||
180 | *x = NULL; | |
181 | ||
182 | if (!read_obj(name)) { | |
183 | x = NULL; | |
184 | return 0; | |
185 | } | |
186 | result = strtoul(buffer, &p, 10); | |
187 | while (*p == ' ') | |
188 | p++; | |
189 | if (*p) | |
190 | *x = strdup(p); | |
191 | return result; | |
192 | } | |
193 | ||
b7ed698c | 194 | static void set_obj(struct slabinfo *s, const char *name, int n) |
c09d8751 CL |
195 | { |
196 | char x[100]; | |
a87615b8 | 197 | FILE *f; |
c09d8751 | 198 | |
f32143a2 | 199 | snprintf(x, 100, "%s/%s", s->name, name); |
a87615b8 | 200 | f = fopen(x, "w"); |
c09d8751 CL |
201 | if (!f) |
202 | fatal("Cannot write to %s\n", x); | |
203 | ||
204 | fprintf(f, "%d\n", n); | |
205 | fclose(f); | |
206 | } | |
207 | ||
b7ed698c | 208 | static unsigned long read_slab_obj(struct slabinfo *s, const char *name) |
a87615b8 CL |
209 | { |
210 | char x[100]; | |
211 | FILE *f; | |
f32143a2 | 212 | size_t l; |
a87615b8 | 213 | |
f32143a2 | 214 | snprintf(x, 100, "%s/%s", s->name, name); |
a87615b8 CL |
215 | f = fopen(x, "r"); |
216 | if (!f) { | |
217 | buffer[0] = 0; | |
218 | l = 0; | |
219 | } else { | |
220 | l = fread(buffer, 1, sizeof(buffer), f); | |
221 | buffer[l] = 0; | |
222 | fclose(f); | |
223 | } | |
224 | return l; | |
225 | } | |
226 | ||
227 | ||
c09d8751 CL |
228 | /* |
229 | * Put a size string together | |
230 | */ | |
b7ed698c | 231 | static int store_size(char *buffer, unsigned long value) |
c09d8751 CL |
232 | { |
233 | unsigned long divisor = 1; | |
234 | char trailer = 0; | |
235 | int n; | |
236 | ||
a8ea0bf1 SS |
237 | if (!show_bytes) { |
238 | if (value > 1000000000UL) { | |
239 | divisor = 100000000UL; | |
240 | trailer = 'G'; | |
241 | } else if (value > 1000000UL) { | |
242 | divisor = 100000UL; | |
243 | trailer = 'M'; | |
244 | } else if (value > 1000UL) { | |
245 | divisor = 100; | |
246 | trailer = 'K'; | |
247 | } | |
c09d8751 CL |
248 | } |
249 | ||
250 | value /= divisor; | |
251 | n = sprintf(buffer, "%ld",value); | |
252 | if (trailer) { | |
253 | buffer[n] = trailer; | |
254 | n++; | |
255 | buffer[n] = 0; | |
256 | } | |
257 | if (divisor != 1) { | |
258 | memmove(buffer + n - 2, buffer + n - 3, 4); | |
259 | buffer[n-2] = '.'; | |
260 | n++; | |
261 | } | |
262 | return n; | |
263 | } | |
264 | ||
b7ed698c | 265 | static void decode_numa_list(int *numa, char *t) |
c09d8751 CL |
266 | { |
267 | int node; | |
268 | int nr; | |
269 | ||
270 | memset(numa, 0, MAX_NODES * sizeof(int)); | |
271 | ||
eefaca9c CL |
272 | if (!t) |
273 | return; | |
274 | ||
c09d8751 CL |
275 | while (*t == 'N') { |
276 | t++; | |
277 | node = strtoul(t, &t, 10); | |
278 | if (*t == '=') { | |
279 | t++; | |
280 | nr = strtoul(t, &t, 10); | |
281 | numa[node] = nr; | |
282 | if (node > highest_node) | |
283 | highest_node = node; | |
284 | } | |
285 | while (*t == ' ') | |
286 | t++; | |
287 | } | |
288 | } | |
289 | ||
b7ed698c | 290 | static void slab_validate(struct slabinfo *s) |
c09d8751 | 291 | { |
32f9306b CL |
292 | if (strcmp(s->name, "*") == 0) |
293 | return; | |
294 | ||
c09d8751 CL |
295 | set_obj(s, "validate", 1); |
296 | } | |
297 | ||
b7ed698c | 298 | static void slab_shrink(struct slabinfo *s) |
c09d8751 | 299 | { |
32f9306b CL |
300 | if (strcmp(s->name, "*") == 0) |
301 | return; | |
302 | ||
c09d8751 CL |
303 | set_obj(s, "shrink", 1); |
304 | } | |
305 | ||
306 | int line = 0; | |
307 | ||
b7ed698c | 308 | static void first_line(void) |
c09d8751 | 309 | { |
8ff12cfc | 310 | if (show_activity) |
a8ea0bf1 SS |
311 | printf("Name Objects Alloc Free" |
312 | " %%Fast Fallb O CmpX UL\n"); | |
8ff12cfc | 313 | else |
a8ea0bf1 | 314 | printf("Name Objects Objsize %s " |
2651f6e7 | 315 | "Slabs/Part/Cpu O/S O %%Fr %%Ef Flg\n", |
a8ea0bf1 | 316 | sort_loss ? " Loss" : "Space"); |
c09d8751 CL |
317 | } |
318 | ||
319 | /* | |
320 | * Find the shortest alias of a slab | |
321 | */ | |
b7ed698c | 322 | static struct aliasinfo *find_one_alias(struct slabinfo *find) |
c09d8751 CL |
323 | { |
324 | struct aliasinfo *a; | |
325 | struct aliasinfo *best = NULL; | |
326 | ||
327 | for(a = aliasinfo;a < aliasinfo + aliases; a++) { | |
328 | if (a->slab == find && | |
329 | (!best || strlen(best->name) < strlen(a->name))) { | |
330 | best = a; | |
331 | if (strncmp(a->name,"kmall", 5) == 0) | |
332 | return best; | |
333 | } | |
334 | } | |
a87615b8 | 335 | return best; |
c09d8751 CL |
336 | } |
337 | ||
b7ed698c | 338 | static unsigned long slab_size(struct slabinfo *s) |
c09d8751 CL |
339 | { |
340 | return s->slabs * (page_size << s->order); | |
341 | } | |
342 | ||
b7ed698c | 343 | static unsigned long slab_activity(struct slabinfo *s) |
8ff12cfc CL |
344 | { |
345 | return s->alloc_fastpath + s->free_fastpath + | |
346 | s->alloc_slowpath + s->free_slowpath; | |
347 | } | |
348 | ||
2651f6e7 SS |
349 | static unsigned long slab_waste(struct slabinfo *s) |
350 | { | |
351 | return slab_size(s) - s->objects * s->object_size; | |
352 | } | |
353 | ||
b7ed698c | 354 | static void slab_numa(struct slabinfo *s, int mode) |
a87615b8 CL |
355 | { |
356 | int node; | |
357 | ||
358 | if (strcmp(s->name, "*") == 0) | |
359 | return; | |
360 | ||
361 | if (!highest_node) { | |
362 | printf("\n%s: No NUMA information available.\n", s->name); | |
363 | return; | |
364 | } | |
365 | ||
366 | if (skip_zero && !s->slabs) | |
367 | return; | |
368 | ||
369 | if (!line) { | |
370 | printf("\n%-21s:", mode ? "NUMA nodes" : "Slab"); | |
371 | for(node = 0; node <= highest_node; node++) | |
372 | printf(" %4d", node); | |
373 | printf("\n----------------------"); | |
374 | for(node = 0; node <= highest_node; node++) | |
375 | printf("-----"); | |
376 | printf("\n"); | |
377 | } | |
378 | printf("%-21s ", mode ? "All slabs" : s->name); | |
379 | for(node = 0; node <= highest_node; node++) { | |
380 | char b[20]; | |
381 | ||
382 | store_size(b, s->numa[node]); | |
383 | printf(" %4s", b); | |
384 | } | |
385 | printf("\n"); | |
386 | if (mode) { | |
387 | printf("%-21s ", "Partial slabs"); | |
388 | for(node = 0; node <= highest_node; node++) { | |
389 | char b[20]; | |
390 | ||
391 | store_size(b, s->numa_partial[node]); | |
392 | printf(" %4s", b); | |
393 | } | |
394 | printf("\n"); | |
395 | } | |
396 | line++; | |
397 | } | |
398 | ||
b7ed698c | 399 | static void show_tracking(struct slabinfo *s) |
a87615b8 CL |
400 | { |
401 | printf("\n%s: Kernel object allocation\n", s->name); | |
402 | printf("-----------------------------------------------------------------------\n"); | |
403 | if (read_slab_obj(s, "alloc_calls")) | |
9da4714a | 404 | printf("%s", buffer); |
a87615b8 CL |
405 | else |
406 | printf("No Data\n"); | |
407 | ||
408 | printf("\n%s: Kernel object freeing\n", s->name); | |
409 | printf("------------------------------------------------------------------------\n"); | |
410 | if (read_slab_obj(s, "free_calls")) | |
9da4714a | 411 | printf("%s", buffer); |
a87615b8 CL |
412 | else |
413 | printf("No Data\n"); | |
414 | ||
415 | } | |
416 | ||
b7ed698c | 417 | static void ops(struct slabinfo *s) |
a87615b8 CL |
418 | { |
419 | if (strcmp(s->name, "*") == 0) | |
420 | return; | |
421 | ||
422 | if (read_slab_obj(s, "ops")) { | |
423 | printf("\n%s: kmem_cache operations\n", s->name); | |
424 | printf("--------------------------------------------\n"); | |
9da4714a | 425 | printf("%s", buffer); |
a87615b8 CL |
426 | } else |
427 | printf("\n%s has no kmem_cache operations\n", s->name); | |
428 | } | |
429 | ||
b7ed698c | 430 | static const char *onoff(int x) |
a87615b8 CL |
431 | { |
432 | if (x) | |
433 | return "On "; | |
434 | return "Off"; | |
435 | } | |
436 | ||
b7ed698c | 437 | static void slab_stats(struct slabinfo *s) |
8ff12cfc CL |
438 | { |
439 | unsigned long total_alloc; | |
440 | unsigned long total_free; | |
441 | unsigned long total; | |
442 | ||
443 | if (!s->alloc_slab) | |
444 | return; | |
445 | ||
446 | total_alloc = s->alloc_fastpath + s->alloc_slowpath; | |
447 | total_free = s->free_fastpath + s->free_slowpath; | |
448 | ||
449 | if (!total_alloc) | |
450 | return; | |
451 | ||
452 | printf("\n"); | |
453 | printf("Slab Perf Counter Alloc Free %%Al %%Fr\n"); | |
454 | printf("--------------------------------------------------\n"); | |
455 | printf("Fastpath %8lu %8lu %3lu %3lu\n", | |
456 | s->alloc_fastpath, s->free_fastpath, | |
457 | s->alloc_fastpath * 100 / total_alloc, | |
4b57ad93 | 458 | total_free ? s->free_fastpath * 100 / total_free : 0); |
8ff12cfc CL |
459 | printf("Slowpath %8lu %8lu %3lu %3lu\n", |
460 | total_alloc - s->alloc_fastpath, s->free_slowpath, | |
461 | (total_alloc - s->alloc_fastpath) * 100 / total_alloc, | |
4b57ad93 | 462 | total_free ? s->free_slowpath * 100 / total_free : 0); |
8ff12cfc CL |
463 | printf("Page Alloc %8lu %8lu %3lu %3lu\n", |
464 | s->alloc_slab, s->free_slab, | |
465 | s->alloc_slab * 100 / total_alloc, | |
4b57ad93 | 466 | total_free ? s->free_slab * 100 / total_free : 0); |
8ff12cfc CL |
467 | printf("Add partial %8lu %8lu %3lu %3lu\n", |
468 | s->deactivate_to_head + s->deactivate_to_tail, | |
469 | s->free_add_partial, | |
470 | (s->deactivate_to_head + s->deactivate_to_tail) * 100 / total_alloc, | |
4b57ad93 | 471 | total_free ? s->free_add_partial * 100 / total_free : 0); |
8ff12cfc CL |
472 | printf("Remove partial %8lu %8lu %3lu %3lu\n", |
473 | s->alloc_from_partial, s->free_remove_partial, | |
474 | s->alloc_from_partial * 100 / total_alloc, | |
4b57ad93 | 475 | total_free ? s->free_remove_partial * 100 / total_free : 0); |
8ff12cfc | 476 | |
aca726a0 CL |
477 | printf("Cpu partial list %8lu %8lu %3lu %3lu\n", |
478 | s->cpu_partial_alloc, s->cpu_partial_free, | |
479 | s->cpu_partial_alloc * 100 / total_alloc, | |
4b57ad93 | 480 | total_free ? s->cpu_partial_free * 100 / total_free : 0); |
aca726a0 | 481 | |
8ff12cfc CL |
482 | printf("RemoteObj/SlabFrozen %8lu %8lu %3lu %3lu\n", |
483 | s->deactivate_remote_frees, s->free_frozen, | |
484 | s->deactivate_remote_frees * 100 / total_alloc, | |
4b57ad93 | 485 | total_free ? s->free_frozen * 100 / total_free : 0); |
8ff12cfc CL |
486 | |
487 | printf("Total %8lu %8lu\n\n", total_alloc, total_free); | |
488 | ||
489 | if (s->cpuslab_flush) | |
490 | printf("Flushes %8lu\n", s->cpuslab_flush); | |
491 | ||
8ff12cfc | 492 | total = s->deactivate_full + s->deactivate_empty + |
9da4714a CL |
493 | s->deactivate_to_head + s->deactivate_to_tail + s->deactivate_bypass; |
494 | ||
495 | if (total) { | |
7c5b7239 | 496 | printf("\nSlab Deactivation Occurrences %%\n"); |
9da4714a CL |
497 | printf("-------------------------------------------------\n"); |
498 | printf("Slab full %7lu %3lu%%\n", | |
499 | s->deactivate_full, (s->deactivate_full * 100) / total); | |
500 | printf("Slab empty %7lu %3lu%%\n", | |
501 | s->deactivate_empty, (s->deactivate_empty * 100) / total); | |
502 | printf("Moved to head of partial list %7lu %3lu%%\n", | |
503 | s->deactivate_to_head, (s->deactivate_to_head * 100) / total); | |
504 | printf("Moved to tail of partial list %7lu %3lu%%\n", | |
8ff12cfc | 505 | s->deactivate_to_tail, (s->deactivate_to_tail * 100) / total); |
9da4714a CL |
506 | printf("Deactivation bypass %7lu %3lu%%\n", |
507 | s->deactivate_bypass, (s->deactivate_bypass * 100) / total); | |
508 | printf("Refilled from foreign frees %7lu %3lu%%\n", | |
509 | s->alloc_refill, (s->alloc_refill * 100) / total); | |
510 | printf("Node mismatch %7lu %3lu%%\n", | |
511 | s->alloc_node_mismatch, (s->alloc_node_mismatch * 100) / total); | |
512 | } | |
513 | ||
2d6a4d64 | 514 | if (s->cmpxchg_double_fail || s->cmpxchg_double_cpu_fail) { |
9da4714a CL |
515 | printf("\nCmpxchg_double Looping\n------------------------\n"); |
516 | printf("Locked Cmpxchg Double redos %lu\nUnlocked Cmpxchg Double redos %lu\n", | |
517 | s->cmpxchg_double_fail, s->cmpxchg_double_cpu_fail); | |
2d6a4d64 | 518 | } |
8ff12cfc CL |
519 | } |
520 | ||
b7ed698c | 521 | static void report(struct slabinfo *s) |
a87615b8 CL |
522 | { |
523 | if (strcmp(s->name, "*") == 0) | |
524 | return; | |
eefaca9c | 525 | |
a8ea0bf1 | 526 | printf("\nSlabcache: %-15s Aliases: %2d Order : %2d Objects: %lu\n", |
eefaca9c | 527 | s->name, s->aliases, s->order, s->objects); |
a87615b8 CL |
528 | if (s->hwcache_align) |
529 | printf("** Hardware cacheline aligned\n"); | |
530 | if (s->cache_dma) | |
531 | printf("** Memory is allocated in a special DMA zone\n"); | |
532 | if (s->destroy_by_rcu) | |
533 | printf("** Slabs are destroyed via RCU\n"); | |
534 | if (s->reclaim_account) | |
535 | printf("** Reclaim accounting active\n"); | |
536 | ||
537 | printf("\nSizes (bytes) Slabs Debug Memory\n"); | |
538 | printf("------------------------------------------------------------------------\n"); | |
539 | printf("Object : %7d Total : %7ld Sanity Checks : %s Total: %7ld\n", | |
540 | s->object_size, s->slabs, onoff(s->sanity_checks), | |
541 | s->slabs * (page_size << s->order)); | |
542 | printf("SlabObj: %7d Full : %7ld Redzoning : %s Used : %7ld\n", | |
543 | s->slab_size, s->slabs - s->partial - s->cpu_slabs, | |
544 | onoff(s->red_zone), s->objects * s->object_size); | |
545 | printf("SlabSiz: %7d Partial: %7ld Poisoning : %s Loss : %7ld\n", | |
546 | page_size << s->order, s->partial, onoff(s->poison), | |
547 | s->slabs * (page_size << s->order) - s->objects * s->object_size); | |
548 | printf("Loss : %7d CpuSlab: %7d Tracking : %s Lalig: %7ld\n", | |
549 | s->slab_size - s->object_size, s->cpu_slabs, onoff(s->store_user), | |
550 | (s->slab_size - s->object_size) * s->objects); | |
551 | printf("Align : %7d Objects: %7d Tracing : %s Lpadd: %7ld\n", | |
552 | s->align, s->objs_per_slab, onoff(s->trace), | |
553 | ((page_size << s->order) - s->objs_per_slab * s->slab_size) * | |
554 | s->slabs); | |
555 | ||
556 | ops(s); | |
557 | show_tracking(s); | |
558 | slab_numa(s, 1); | |
8ff12cfc | 559 | slab_stats(s); |
a87615b8 | 560 | } |
c09d8751 | 561 | |
b7ed698c | 562 | static void slabcache(struct slabinfo *s) |
c09d8751 CL |
563 | { |
564 | char size_str[20]; | |
565 | char dist_str[40]; | |
566 | char flags[20]; | |
567 | char *p = flags; | |
568 | ||
a87615b8 CL |
569 | if (strcmp(s->name, "*") == 0) |
570 | return; | |
571 | ||
572 | if (actual_slabs == 1) { | |
573 | report(s); | |
574 | return; | |
575 | } | |
576 | ||
577 | if (skip_zero && !show_empty && !s->slabs) | |
578 | return; | |
579 | ||
580 | if (show_empty && s->slabs) | |
c09d8751 CL |
581 | return; |
582 | ||
2651f6e7 SS |
583 | if (sort_loss == 0) |
584 | store_size(size_str, slab_size(s)); | |
585 | else | |
586 | store_size(size_str, slab_waste(s)); | |
205ab99d CL |
587 | snprintf(dist_str, 40, "%lu/%lu/%d", s->slabs - s->cpu_slabs, |
588 | s->partial, s->cpu_slabs); | |
c09d8751 CL |
589 | |
590 | if (!line++) | |
591 | first_line(); | |
592 | ||
593 | if (s->aliases) | |
594 | *p++ = '*'; | |
595 | if (s->cache_dma) | |
596 | *p++ = 'd'; | |
597 | if (s->hwcache_align) | |
598 | *p++ = 'A'; | |
599 | if (s->poison) | |
600 | *p++ = 'P'; | |
601 | if (s->reclaim_account) | |
602 | *p++ = 'a'; | |
603 | if (s->red_zone) | |
604 | *p++ = 'Z'; | |
605 | if (s->sanity_checks) | |
606 | *p++ = 'F'; | |
607 | if (s->store_user) | |
608 | *p++ = 'U'; | |
609 | if (s->trace) | |
610 | *p++ = 'T'; | |
611 | ||
612 | *p = 0; | |
8ff12cfc CL |
613 | if (show_activity) { |
614 | unsigned long total_alloc; | |
615 | unsigned long total_free; | |
616 | ||
617 | total_alloc = s->alloc_fastpath + s->alloc_slowpath; | |
618 | total_free = s->free_fastpath + s->free_slowpath; | |
619 | ||
9da4714a | 620 | printf("%-21s %8ld %10ld %10ld %3ld %3ld %5ld %1d %4ld %4ld\n", |
8ff12cfc CL |
621 | s->name, s->objects, |
622 | total_alloc, total_free, | |
623 | total_alloc ? (s->alloc_fastpath * 100 / total_alloc) : 0, | |
f715e6f1 | 624 | total_free ? (s->free_fastpath * 100 / total_free) : 0, |
9da4714a CL |
625 | s->order_fallback, s->order, s->cmpxchg_double_fail, |
626 | s->cmpxchg_double_cpu_fail); | |
016c6cdf | 627 | } else { |
a8ea0bf1 | 628 | printf("%-21s %8ld %7d %15s %14s %4d %1d %3ld %3ld %s\n", |
8ff12cfc CL |
629 | s->name, s->objects, s->object_size, size_str, dist_str, |
630 | s->objs_per_slab, s->order, | |
631 | s->slabs ? (s->partial * 100) / s->slabs : 100, | |
632 | s->slabs ? (s->objects * s->object_size * 100) / | |
633 | (s->slabs * (page_size << s->order)) : 100, | |
634 | flags); | |
016c6cdf | 635 | } |
c09d8751 CL |
636 | } |
637 | ||
a87615b8 CL |
638 | /* |
639 | * Analyze debug options. Return false if something is amiss. | |
640 | */ | |
b7ed698c | 641 | static int debug_opt_scan(char *opt) |
c09d8751 | 642 | { |
a87615b8 CL |
643 | if (!opt || !opt[0] || strcmp(opt, "-") == 0) |
644 | return 1; | |
645 | ||
646 | if (strcasecmp(opt, "a") == 0) { | |
647 | sanity = 1; | |
648 | poison = 1; | |
649 | redzone = 1; | |
650 | tracking = 1; | |
651 | return 1; | |
652 | } | |
c09d8751 | 653 | |
a87615b8 | 654 | for ( ; *opt; opt++) |
0d24db33 | 655 | switch (*opt) { |
a87615b8 CL |
656 | case 'F' : case 'f': |
657 | if (sanity) | |
658 | return 0; | |
659 | sanity = 1; | |
660 | break; | |
661 | case 'P' : case 'p': | |
662 | if (poison) | |
663 | return 0; | |
664 | poison = 1; | |
665 | break; | |
c09d8751 | 666 | |
a87615b8 CL |
667 | case 'Z' : case 'z': |
668 | if (redzone) | |
669 | return 0; | |
670 | redzone = 1; | |
671 | break; | |
c09d8751 | 672 | |
a87615b8 CL |
673 | case 'U' : case 'u': |
674 | if (tracking) | |
675 | return 0; | |
676 | tracking = 1; | |
677 | break; | |
c09d8751 | 678 | |
a87615b8 CL |
679 | case 'T' : case 't': |
680 | if (tracing) | |
681 | return 0; | |
682 | tracing = 1; | |
683 | break; | |
684 | default: | |
685 | return 0; | |
686 | } | |
687 | return 1; | |
c09d8751 CL |
688 | } |
689 | ||
b7ed698c | 690 | static int slab_empty(struct slabinfo *s) |
c09d8751 | 691 | { |
a87615b8 CL |
692 | if (s->objects > 0) |
693 | return 0; | |
c09d8751 | 694 | |
a87615b8 CL |
695 | /* |
696 | * We may still have slabs even if there are no objects. Shrinking will | |
697 | * remove them. | |
698 | */ | |
699 | if (s->slabs != 0) | |
700 | set_obj(s, "shrink", 1); | |
c09d8751 | 701 | |
a87615b8 CL |
702 | return 1; |
703 | } | |
704 | ||
b7ed698c | 705 | static void slab_debug(struct slabinfo *s) |
a87615b8 | 706 | { |
32f9306b CL |
707 | if (strcmp(s->name, "*") == 0) |
708 | return; | |
709 | ||
a87615b8 CL |
710 | if (sanity && !s->sanity_checks) { |
711 | set_obj(s, "sanity", 1); | |
712 | } | |
713 | if (!sanity && s->sanity_checks) { | |
714 | if (slab_empty(s)) | |
715 | set_obj(s, "sanity", 0); | |
716 | else | |
717 | fprintf(stderr, "%s not empty cannot disable sanity checks\n", s->name); | |
718 | } | |
719 | if (redzone && !s->red_zone) { | |
720 | if (slab_empty(s)) | |
721 | set_obj(s, "red_zone", 1); | |
722 | else | |
723 | fprintf(stderr, "%s not empty cannot enable redzoning\n", s->name); | |
724 | } | |
725 | if (!redzone && s->red_zone) { | |
726 | if (slab_empty(s)) | |
727 | set_obj(s, "red_zone", 0); | |
728 | else | |
729 | fprintf(stderr, "%s not empty cannot disable redzoning\n", s->name); | |
730 | } | |
731 | if (poison && !s->poison) { | |
732 | if (slab_empty(s)) | |
733 | set_obj(s, "poison", 1); | |
734 | else | |
735 | fprintf(stderr, "%s not empty cannot enable poisoning\n", s->name); | |
736 | } | |
737 | if (!poison && s->poison) { | |
738 | if (slab_empty(s)) | |
739 | set_obj(s, "poison", 0); | |
740 | else | |
741 | fprintf(stderr, "%s not empty cannot disable poisoning\n", s->name); | |
742 | } | |
743 | if (tracking && !s->store_user) { | |
744 | if (slab_empty(s)) | |
745 | set_obj(s, "store_user", 1); | |
746 | else | |
747 | fprintf(stderr, "%s not empty cannot enable tracking\n", s->name); | |
748 | } | |
749 | if (!tracking && s->store_user) { | |
750 | if (slab_empty(s)) | |
751 | set_obj(s, "store_user", 0); | |
752 | else | |
753 | fprintf(stderr, "%s not empty cannot disable tracking\n", s->name); | |
754 | } | |
755 | if (tracing && !s->trace) { | |
756 | if (slabs == 1) | |
757 | set_obj(s, "trace", 1); | |
758 | else | |
759 | fprintf(stderr, "%s can only enable trace for one slab at a time\n", s->name); | |
760 | } | |
761 | if (!tracing && s->trace) | |
762 | set_obj(s, "trace", 1); | |
c09d8751 CL |
763 | } |
764 | ||
b7ed698c | 765 | static void totals(void) |
c09d8751 CL |
766 | { |
767 | struct slabinfo *s; | |
768 | ||
769 | int used_slabs = 0; | |
770 | char b1[20], b2[20], b3[20], b4[20]; | |
771 | unsigned long long max = 1ULL << 63; | |
772 | ||
773 | /* Object size */ | |
774 | unsigned long long min_objsize = max, max_objsize = 0, avg_objsize; | |
775 | ||
776 | /* Number of partial slabs in a slabcache */ | |
777 | unsigned long long min_partial = max, max_partial = 0, | |
778 | avg_partial, total_partial = 0; | |
779 | ||
780 | /* Number of slabs in a slab cache */ | |
781 | unsigned long long min_slabs = max, max_slabs = 0, | |
782 | avg_slabs, total_slabs = 0; | |
783 | ||
784 | /* Size of the whole slab */ | |
785 | unsigned long long min_size = max, max_size = 0, | |
786 | avg_size, total_size = 0; | |
787 | ||
788 | /* Bytes used for object storage in a slab */ | |
789 | unsigned long long min_used = max, max_used = 0, | |
790 | avg_used, total_used = 0; | |
791 | ||
792 | /* Waste: Bytes used for alignment and padding */ | |
793 | unsigned long long min_waste = max, max_waste = 0, | |
794 | avg_waste, total_waste = 0; | |
795 | /* Number of objects in a slab */ | |
796 | unsigned long long min_objects = max, max_objects = 0, | |
797 | avg_objects, total_objects = 0; | |
798 | /* Waste per object */ | |
799 | unsigned long long min_objwaste = max, | |
800 | max_objwaste = 0, avg_objwaste, | |
801 | total_objwaste = 0; | |
802 | ||
803 | /* Memory per object */ | |
804 | unsigned long long min_memobj = max, | |
805 | max_memobj = 0, avg_memobj, | |
806 | total_objsize = 0; | |
807 | ||
808 | /* Percentage of partial slabs per slab */ | |
809 | unsigned long min_ppart = 100, max_ppart = 0, | |
810 | avg_ppart, total_ppart = 0; | |
811 | ||
812 | /* Number of objects in partial slabs */ | |
813 | unsigned long min_partobj = max, max_partobj = 0, | |
814 | avg_partobj, total_partobj = 0; | |
815 | ||
816 | /* Percentage of partial objects of all objects in a slab */ | |
817 | unsigned long min_ppartobj = 100, max_ppartobj = 0, | |
818 | avg_ppartobj, total_ppartobj = 0; | |
819 | ||
820 | ||
821 | for (s = slabinfo; s < slabinfo + slabs; s++) { | |
822 | unsigned long long size; | |
823 | unsigned long used; | |
824 | unsigned long long wasted; | |
825 | unsigned long long objwaste; | |
c09d8751 CL |
826 | unsigned long percentage_partial_slabs; |
827 | unsigned long percentage_partial_objs; | |
828 | ||
829 | if (!s->slabs || !s->objects) | |
830 | continue; | |
831 | ||
832 | used_slabs++; | |
833 | ||
834 | size = slab_size(s); | |
835 | used = s->objects * s->object_size; | |
836 | wasted = size - used; | |
837 | objwaste = s->slab_size - s->object_size; | |
838 | ||
c09d8751 CL |
839 | percentage_partial_slabs = s->partial * 100 / s->slabs; |
840 | if (percentage_partial_slabs > 100) | |
841 | percentage_partial_slabs = 100; | |
842 | ||
205ab99d | 843 | percentage_partial_objs = s->objects_partial * 100 |
c09d8751 CL |
844 | / s->objects; |
845 | ||
846 | if (percentage_partial_objs > 100) | |
847 | percentage_partial_objs = 100; | |
848 | ||
849 | if (s->object_size < min_objsize) | |
850 | min_objsize = s->object_size; | |
851 | if (s->partial < min_partial) | |
852 | min_partial = s->partial; | |
853 | if (s->slabs < min_slabs) | |
854 | min_slabs = s->slabs; | |
855 | if (size < min_size) | |
856 | min_size = size; | |
857 | if (wasted < min_waste) | |
858 | min_waste = wasted; | |
859 | if (objwaste < min_objwaste) | |
860 | min_objwaste = objwaste; | |
861 | if (s->objects < min_objects) | |
862 | min_objects = s->objects; | |
863 | if (used < min_used) | |
864 | min_used = used; | |
205ab99d CL |
865 | if (s->objects_partial < min_partobj) |
866 | min_partobj = s->objects_partial; | |
c09d8751 CL |
867 | if (percentage_partial_slabs < min_ppart) |
868 | min_ppart = percentage_partial_slabs; | |
869 | if (percentage_partial_objs < min_ppartobj) | |
870 | min_ppartobj = percentage_partial_objs; | |
871 | if (s->slab_size < min_memobj) | |
872 | min_memobj = s->slab_size; | |
873 | ||
874 | if (s->object_size > max_objsize) | |
875 | max_objsize = s->object_size; | |
876 | if (s->partial > max_partial) | |
877 | max_partial = s->partial; | |
878 | if (s->slabs > max_slabs) | |
879 | max_slabs = s->slabs; | |
880 | if (size > max_size) | |
881 | max_size = size; | |
882 | if (wasted > max_waste) | |
883 | max_waste = wasted; | |
884 | if (objwaste > max_objwaste) | |
885 | max_objwaste = objwaste; | |
886 | if (s->objects > max_objects) | |
887 | max_objects = s->objects; | |
888 | if (used > max_used) | |
889 | max_used = used; | |
205ab99d CL |
890 | if (s->objects_partial > max_partobj) |
891 | max_partobj = s->objects_partial; | |
c09d8751 CL |
892 | if (percentage_partial_slabs > max_ppart) |
893 | max_ppart = percentage_partial_slabs; | |
894 | if (percentage_partial_objs > max_ppartobj) | |
895 | max_ppartobj = percentage_partial_objs; | |
896 | if (s->slab_size > max_memobj) | |
897 | max_memobj = s->slab_size; | |
898 | ||
899 | total_partial += s->partial; | |
900 | total_slabs += s->slabs; | |
901 | total_size += size; | |
902 | total_waste += wasted; | |
903 | ||
904 | total_objects += s->objects; | |
905 | total_used += used; | |
205ab99d | 906 | total_partobj += s->objects_partial; |
c09d8751 CL |
907 | total_ppart += percentage_partial_slabs; |
908 | total_ppartobj += percentage_partial_objs; | |
909 | ||
910 | total_objwaste += s->objects * objwaste; | |
911 | total_objsize += s->objects * s->slab_size; | |
912 | } | |
913 | ||
914 | if (!total_objects) { | |
915 | printf("No objects\n"); | |
916 | return; | |
917 | } | |
918 | if (!used_slabs) { | |
919 | printf("No slabs\n"); | |
920 | return; | |
921 | } | |
922 | ||
923 | /* Per slab averages */ | |
924 | avg_partial = total_partial / used_slabs; | |
925 | avg_slabs = total_slabs / used_slabs; | |
926 | avg_size = total_size / used_slabs; | |
927 | avg_waste = total_waste / used_slabs; | |
928 | ||
929 | avg_objects = total_objects / used_slabs; | |
930 | avg_used = total_used / used_slabs; | |
931 | avg_partobj = total_partobj / used_slabs; | |
932 | avg_ppart = total_ppart / used_slabs; | |
933 | avg_ppartobj = total_ppartobj / used_slabs; | |
934 | ||
935 | /* Per object object sizes */ | |
936 | avg_objsize = total_used / total_objects; | |
937 | avg_objwaste = total_objwaste / total_objects; | |
938 | avg_partobj = total_partobj * 100 / total_objects; | |
939 | avg_memobj = total_objsize / total_objects; | |
940 | ||
941 | printf("Slabcache Totals\n"); | |
942 | printf("----------------\n"); | |
a8ea0bf1 | 943 | printf("Slabcaches : %15d Aliases : %11d->%-3d Active: %3d\n", |
c09d8751 CL |
944 | slabs, aliases, alias_targets, used_slabs); |
945 | ||
946 | store_size(b1, total_size);store_size(b2, total_waste); | |
947 | store_size(b3, total_waste * 100 / total_used); | |
a8ea0bf1 | 948 | printf("Memory used: %15s # Loss : %15s MRatio:%6s%%\n", b1, b2, b3); |
c09d8751 CL |
949 | |
950 | store_size(b1, total_objects);store_size(b2, total_partobj); | |
951 | store_size(b3, total_partobj * 100 / total_objects); | |
a8ea0bf1 | 952 | printf("# Objects : %15s # PartObj: %15s ORatio:%6s%%\n", b1, b2, b3); |
c09d8751 CL |
953 | |
954 | printf("\n"); | |
a8ea0bf1 SS |
955 | printf("Per Cache Average " |
956 | "Min Max Total\n"); | |
957 | printf("---------------------------------------" | |
958 | "-------------------------------------\n"); | |
c09d8751 CL |
959 | |
960 | store_size(b1, avg_objects);store_size(b2, min_objects); | |
961 | store_size(b3, max_objects);store_size(b4, total_objects); | |
a8ea0bf1 | 962 | printf("#Objects %15s %15s %15s %15s\n", |
c09d8751 CL |
963 | b1, b2, b3, b4); |
964 | ||
965 | store_size(b1, avg_slabs);store_size(b2, min_slabs); | |
966 | store_size(b3, max_slabs);store_size(b4, total_slabs); | |
a8ea0bf1 | 967 | printf("#Slabs %15s %15s %15s %15s\n", |
c09d8751 CL |
968 | b1, b2, b3, b4); |
969 | ||
970 | store_size(b1, avg_partial);store_size(b2, min_partial); | |
971 | store_size(b3, max_partial);store_size(b4, total_partial); | |
a8ea0bf1 | 972 | printf("#PartSlab %15s %15s %15s %15s\n", |
c09d8751 CL |
973 | b1, b2, b3, b4); |
974 | store_size(b1, avg_ppart);store_size(b2, min_ppart); | |
975 | store_size(b3, max_ppart); | |
976 | store_size(b4, total_partial * 100 / total_slabs); | |
a8ea0bf1 | 977 | printf("%%PartSlab%15s%% %15s%% %15s%% %15s%%\n", |
c09d8751 CL |
978 | b1, b2, b3, b4); |
979 | ||
980 | store_size(b1, avg_partobj);store_size(b2, min_partobj); | |
981 | store_size(b3, max_partobj); | |
982 | store_size(b4, total_partobj); | |
a8ea0bf1 | 983 | printf("PartObjs %15s %15s %15s %15s\n", |
c09d8751 CL |
984 | b1, b2, b3, b4); |
985 | ||
986 | store_size(b1, avg_ppartobj);store_size(b2, min_ppartobj); | |
987 | store_size(b3, max_ppartobj); | |
988 | store_size(b4, total_partobj * 100 / total_objects); | |
a8ea0bf1 | 989 | printf("%% PartObj%15s%% %15s%% %15s%% %15s%%\n", |
c09d8751 CL |
990 | b1, b2, b3, b4); |
991 | ||
992 | store_size(b1, avg_size);store_size(b2, min_size); | |
993 | store_size(b3, max_size);store_size(b4, total_size); | |
a8ea0bf1 | 994 | printf("Memory %15s %15s %15s %15s\n", |
c09d8751 CL |
995 | b1, b2, b3, b4); |
996 | ||
997 | store_size(b1, avg_used);store_size(b2, min_used); | |
998 | store_size(b3, max_used);store_size(b4, total_used); | |
a8ea0bf1 | 999 | printf("Used %15s %15s %15s %15s\n", |
c09d8751 CL |
1000 | b1, b2, b3, b4); |
1001 | ||
1002 | store_size(b1, avg_waste);store_size(b2, min_waste); | |
1003 | store_size(b3, max_waste);store_size(b4, total_waste); | |
a8ea0bf1 | 1004 | printf("Loss %15s %15s %15s %15s\n", |
c09d8751 CL |
1005 | b1, b2, b3, b4); |
1006 | ||
1007 | printf("\n"); | |
a8ea0bf1 SS |
1008 | printf("Per Object Average " |
1009 | "Min Max\n"); | |
1010 | printf("---------------------------------------" | |
1011 | "--------------------\n"); | |
c09d8751 CL |
1012 | |
1013 | store_size(b1, avg_memobj);store_size(b2, min_memobj); | |
1014 | store_size(b3, max_memobj); | |
a8ea0bf1 | 1015 | printf("Memory %15s %15s %15s\n", |
c09d8751 CL |
1016 | b1, b2, b3); |
1017 | store_size(b1, avg_objsize);store_size(b2, min_objsize); | |
1018 | store_size(b3, max_objsize); | |
a8ea0bf1 | 1019 | printf("User %15s %15s %15s\n", |
c09d8751 CL |
1020 | b1, b2, b3); |
1021 | ||
1022 | store_size(b1, avg_objwaste);store_size(b2, min_objwaste); | |
1023 | store_size(b3, max_objwaste); | |
a8ea0bf1 | 1024 | printf("Loss %15s %15s %15s\n", |
c09d8751 CL |
1025 | b1, b2, b3); |
1026 | } | |
1027 | ||
b7ed698c | 1028 | static void sort_slabs(void) |
c09d8751 CL |
1029 | { |
1030 | struct slabinfo *s1,*s2; | |
1031 | ||
1032 | for (s1 = slabinfo; s1 < slabinfo + slabs; s1++) { | |
1033 | for (s2 = s1 + 1; s2 < slabinfo + slabs; s2++) { | |
1034 | int result; | |
1035 | ||
1036 | if (sort_size) | |
1037 | result = slab_size(s1) < slab_size(s2); | |
8ff12cfc CL |
1038 | else if (sort_active) |
1039 | result = slab_activity(s1) < slab_activity(s2); | |
2651f6e7 SS |
1040 | else if (sort_loss) |
1041 | result = slab_waste(s1) < slab_waste(s2); | |
c09d8751 CL |
1042 | else |
1043 | result = strcasecmp(s1->name, s2->name); | |
1044 | ||
1045 | if (show_inverted) | |
1046 | result = -result; | |
1047 | ||
1048 | if (result > 0) { | |
1049 | struct slabinfo t; | |
1050 | ||
1051 | memcpy(&t, s1, sizeof(struct slabinfo)); | |
1052 | memcpy(s1, s2, sizeof(struct slabinfo)); | |
1053 | memcpy(s2, &t, sizeof(struct slabinfo)); | |
1054 | } | |
1055 | } | |
1056 | } | |
1057 | } | |
1058 | ||
b7ed698c | 1059 | static void sort_aliases(void) |
c09d8751 CL |
1060 | { |
1061 | struct aliasinfo *a1,*a2; | |
1062 | ||
1063 | for (a1 = aliasinfo; a1 < aliasinfo + aliases; a1++) { | |
1064 | for (a2 = a1 + 1; a2 < aliasinfo + aliases; a2++) { | |
1065 | char *n1, *n2; | |
1066 | ||
1067 | n1 = a1->name; | |
1068 | n2 = a2->name; | |
1069 | if (show_alias && !show_inverted) { | |
1070 | n1 = a1->ref; | |
1071 | n2 = a2->ref; | |
1072 | } | |
1073 | if (strcasecmp(n1, n2) > 0) { | |
1074 | struct aliasinfo t; | |
1075 | ||
1076 | memcpy(&t, a1, sizeof(struct aliasinfo)); | |
1077 | memcpy(a1, a2, sizeof(struct aliasinfo)); | |
1078 | memcpy(a2, &t, sizeof(struct aliasinfo)); | |
1079 | } | |
1080 | } | |
1081 | } | |
1082 | } | |
1083 | ||
b7ed698c | 1084 | static void link_slabs(void) |
c09d8751 CL |
1085 | { |
1086 | struct aliasinfo *a; | |
1087 | struct slabinfo *s; | |
1088 | ||
1089 | for (a = aliasinfo; a < aliasinfo + aliases; a++) { | |
1090 | ||
a87615b8 | 1091 | for (s = slabinfo; s < slabinfo + slabs; s++) |
c09d8751 CL |
1092 | if (strcmp(a->ref, s->name) == 0) { |
1093 | a->slab = s; | |
1094 | s->refs++; | |
1095 | break; | |
1096 | } | |
1097 | if (s == slabinfo + slabs) | |
1098 | fatal("Unresolved alias %s\n", a->ref); | |
1099 | } | |
1100 | } | |
1101 | ||
b7ed698c | 1102 | static void alias(void) |
c09d8751 CL |
1103 | { |
1104 | struct aliasinfo *a; | |
1105 | char *active = NULL; | |
1106 | ||
1107 | sort_aliases(); | |
1108 | link_slabs(); | |
1109 | ||
1110 | for(a = aliasinfo; a < aliasinfo + aliases; a++) { | |
1111 | ||
1112 | if (!show_single_ref && a->slab->refs == 1) | |
1113 | continue; | |
1114 | ||
1115 | if (!show_inverted) { | |
1116 | if (active) { | |
1117 | if (strcmp(a->slab->name, active) == 0) { | |
1118 | printf(" %s", a->name); | |
1119 | continue; | |
1120 | } | |
1121 | } | |
a87615b8 | 1122 | printf("\n%-12s <- %s", a->slab->name, a->name); |
c09d8751 CL |
1123 | active = a->slab->name; |
1124 | } | |
1125 | else | |
a8ea0bf1 | 1126 | printf("%-15s -> %s\n", a->name, a->slab->name); |
c09d8751 CL |
1127 | } |
1128 | if (active) | |
1129 | printf("\n"); | |
1130 | } | |
1131 | ||
1132 | ||
b7ed698c | 1133 | static void rename_slabs(void) |
c09d8751 CL |
1134 | { |
1135 | struct slabinfo *s; | |
1136 | struct aliasinfo *a; | |
1137 | ||
1138 | for (s = slabinfo; s < slabinfo + slabs; s++) { | |
1139 | if (*s->name != ':') | |
1140 | continue; | |
1141 | ||
1142 | if (s->refs > 1 && !show_first_alias) | |
1143 | continue; | |
1144 | ||
1145 | a = find_one_alias(s); | |
1146 | ||
a87615b8 CL |
1147 | if (a) |
1148 | s->name = a->name; | |
1149 | else { | |
1150 | s->name = "*"; | |
1151 | actual_slabs--; | |
1152 | } | |
c09d8751 CL |
1153 | } |
1154 | } | |
1155 | ||
b7ed698c | 1156 | static int slab_mismatch(char *slab) |
c09d8751 CL |
1157 | { |
1158 | return regexec(&pattern, slab, 0, NULL, 0); | |
1159 | } | |
1160 | ||
b7ed698c | 1161 | static void read_slab_dir(void) |
c09d8751 CL |
1162 | { |
1163 | DIR *dir; | |
1164 | struct dirent *de; | |
1165 | struct slabinfo *slab = slabinfo; | |
1166 | struct aliasinfo *alias = aliasinfo; | |
1167 | char *p; | |
1168 | char *t; | |
1169 | int count; | |
1170 | ||
b6c24de7 | 1171 | if (chdir("/sys/kernel/slab") && chdir("/sys/slab")) |
a87615b8 CL |
1172 | fatal("SYSFS support for SLUB not active\n"); |
1173 | ||
c09d8751 CL |
1174 | dir = opendir("."); |
1175 | while ((de = readdir(dir))) { | |
1176 | if (de->d_name[0] == '.' || | |
a87615b8 CL |
1177 | (de->d_name[0] != ':' && slab_mismatch(de->d_name))) |
1178 | continue; | |
c09d8751 CL |
1179 | switch (de->d_type) { |
1180 | case DT_LNK: | |
0d24db33 | 1181 | alias->name = strdup(de->d_name); |
fe353178 | 1182 | count = readlink(de->d_name, buffer, sizeof(buffer)-1); |
c09d8751 CL |
1183 | |
1184 | if (count < 0) | |
1185 | fatal("Cannot read symlink %s\n", de->d_name); | |
1186 | ||
1187 | buffer[count] = 0; | |
1188 | p = buffer + count; | |
1189 | while (p > buffer && p[-1] != '/') | |
1190 | p--; | |
1191 | alias->ref = strdup(p); | |
1192 | alias++; | |
1193 | break; | |
1194 | case DT_DIR: | |
1195 | if (chdir(de->d_name)) | |
1196 | fatal("Unable to access slab %s\n", slab->name); | |
0d24db33 | 1197 | slab->name = strdup(de->d_name); |
c09d8751 CL |
1198 | slab->alias = 0; |
1199 | slab->refs = 0; | |
1200 | slab->aliases = get_obj("aliases"); | |
1201 | slab->align = get_obj("align"); | |
1202 | slab->cache_dma = get_obj("cache_dma"); | |
1203 | slab->cpu_slabs = get_obj("cpu_slabs"); | |
1204 | slab->destroy_by_rcu = get_obj("destroy_by_rcu"); | |
1205 | slab->hwcache_align = get_obj("hwcache_align"); | |
1206 | slab->object_size = get_obj("object_size"); | |
1207 | slab->objects = get_obj("objects"); | |
205ab99d CL |
1208 | slab->objects_partial = get_obj("objects_partial"); |
1209 | slab->objects_total = get_obj("objects_total"); | |
c09d8751 CL |
1210 | slab->objs_per_slab = get_obj("objs_per_slab"); |
1211 | slab->order = get_obj("order"); | |
1212 | slab->partial = get_obj("partial"); | |
1213 | slab->partial = get_obj_and_str("partial", &t); | |
1214 | decode_numa_list(slab->numa_partial, t); | |
f32143a2 | 1215 | free(t); |
c09d8751 CL |
1216 | slab->poison = get_obj("poison"); |
1217 | slab->reclaim_account = get_obj("reclaim_account"); | |
1218 | slab->red_zone = get_obj("red_zone"); | |
1219 | slab->sanity_checks = get_obj("sanity_checks"); | |
1220 | slab->slab_size = get_obj("slab_size"); | |
1221 | slab->slabs = get_obj_and_str("slabs", &t); | |
1222 | decode_numa_list(slab->numa, t); | |
f32143a2 | 1223 | free(t); |
c09d8751 CL |
1224 | slab->store_user = get_obj("store_user"); |
1225 | slab->trace = get_obj("trace"); | |
8ff12cfc CL |
1226 | slab->alloc_fastpath = get_obj("alloc_fastpath"); |
1227 | slab->alloc_slowpath = get_obj("alloc_slowpath"); | |
1228 | slab->free_fastpath = get_obj("free_fastpath"); | |
1229 | slab->free_slowpath = get_obj("free_slowpath"); | |
1230 | slab->free_frozen= get_obj("free_frozen"); | |
1231 | slab->free_add_partial = get_obj("free_add_partial"); | |
1232 | slab->free_remove_partial = get_obj("free_remove_partial"); | |
1233 | slab->alloc_from_partial = get_obj("alloc_from_partial"); | |
1234 | slab->alloc_slab = get_obj("alloc_slab"); | |
1235 | slab->alloc_refill = get_obj("alloc_refill"); | |
1236 | slab->free_slab = get_obj("free_slab"); | |
1237 | slab->cpuslab_flush = get_obj("cpuslab_flush"); | |
1238 | slab->deactivate_full = get_obj("deactivate_full"); | |
1239 | slab->deactivate_empty = get_obj("deactivate_empty"); | |
1240 | slab->deactivate_to_head = get_obj("deactivate_to_head"); | |
1241 | slab->deactivate_to_tail = get_obj("deactivate_to_tail"); | |
1242 | slab->deactivate_remote_frees = get_obj("deactivate_remote_frees"); | |
f715e6f1 | 1243 | slab->order_fallback = get_obj("order_fallback"); |
9da4714a CL |
1244 | slab->cmpxchg_double_cpu_fail = get_obj("cmpxchg_double_cpu_fail"); |
1245 | slab->cmpxchg_double_fail = get_obj("cmpxchg_double_fail"); | |
aca726a0 CL |
1246 | slab->cpu_partial_alloc = get_obj("cpu_partial_alloc"); |
1247 | slab->cpu_partial_free = get_obj("cpu_partial_free"); | |
9da4714a CL |
1248 | slab->alloc_node_mismatch = get_obj("alloc_node_mismatch"); |
1249 | slab->deactivate_bypass = get_obj("deactivate_bypass"); | |
c09d8751 CL |
1250 | chdir(".."); |
1251 | if (slab->name[0] == ':') | |
1252 | alias_targets++; | |
1253 | slab++; | |
1254 | break; | |
1255 | default : | |
1256 | fatal("Unknown file type %lx\n", de->d_type); | |
1257 | } | |
1258 | } | |
1259 | closedir(dir); | |
1260 | slabs = slab - slabinfo; | |
a87615b8 | 1261 | actual_slabs = slabs; |
c09d8751 CL |
1262 | aliases = alias - aliasinfo; |
1263 | if (slabs > MAX_SLABS) | |
1264 | fatal("Too many slabs\n"); | |
1265 | if (aliases > MAX_ALIASES) | |
1266 | fatal("Too many aliases\n"); | |
1267 | } | |
1268 | ||
b7ed698c | 1269 | static void output_slabs(void) |
c09d8751 CL |
1270 | { |
1271 | struct slabinfo *slab; | |
016c6cdf | 1272 | int lines = output_lines; |
c09d8751 | 1273 | |
4980a963 | 1274 | for (slab = slabinfo; (slab < slabinfo + slabs) && |
016c6cdf | 1275 | lines != 0; slab++) { |
c09d8751 CL |
1276 | |
1277 | if (slab->alias) | |
1278 | continue; | |
1279 | ||
016c6cdf SS |
1280 | if (lines != -1) |
1281 | lines--; | |
c09d8751 CL |
1282 | |
1283 | if (show_numa) | |
a87615b8 CL |
1284 | slab_numa(slab, 0); |
1285 | else if (show_track) | |
c09d8751 | 1286 | show_tracking(slab); |
a87615b8 | 1287 | else if (validate) |
c09d8751 | 1288 | slab_validate(slab); |
a87615b8 | 1289 | else if (shrink) |
c09d8751 | 1290 | slab_shrink(slab); |
a87615b8 CL |
1291 | else if (set_debug) |
1292 | slab_debug(slab); | |
1293 | else if (show_ops) | |
1294 | ops(slab); | |
1295 | else if (show_slab) | |
1296 | slabcache(slab); | |
eefaca9c CL |
1297 | else if (show_report) |
1298 | report(slab); | |
c09d8751 CL |
1299 | } |
1300 | } | |
1301 | ||
016c6cdf SS |
1302 | static void xtotals(void) |
1303 | { | |
1304 | totals(); | |
1305 | ||
1306 | link_slabs(); | |
1307 | rename_slabs(); | |
1308 | ||
1309 | printf("\nSlabs sorted by size\n"); | |
a8ea0bf1 | 1310 | printf("--------------------\n"); |
016c6cdf SS |
1311 | sort_loss = 0; |
1312 | sort_size = 1; | |
1313 | sort_slabs(); | |
1314 | output_slabs(); | |
1315 | ||
1316 | printf("\nSlabs sorted by loss\n"); | |
a8ea0bf1 | 1317 | printf("--------------------\n"); |
016c6cdf SS |
1318 | line = 0; |
1319 | sort_loss = 1; | |
1320 | sort_size = 0; | |
1321 | sort_slabs(); | |
1322 | output_slabs(); | |
1323 | printf("\n"); | |
1324 | } | |
1325 | ||
c09d8751 | 1326 | struct option opts[] = { |
2b100755 SS |
1327 | { "aliases", no_argument, NULL, 'a' }, |
1328 | { "activity", no_argument, NULL, 'A' }, | |
1329 | { "debug", optional_argument, NULL, 'd' }, | |
1330 | { "display-activity", no_argument, NULL, 'D' }, | |
1331 | { "empty", no_argument, NULL, 'e' }, | |
1332 | { "first-alias", no_argument, NULL, 'f' }, | |
1333 | { "help", no_argument, NULL, 'h' }, | |
1334 | { "inverted", no_argument, NULL, 'i'}, | |
0d00bf58 | 1335 | { "slabs", no_argument, NULL, 'l' }, |
2b100755 SS |
1336 | { "numa", no_argument, NULL, 'n' }, |
1337 | { "ops", no_argument, NULL, 'o' }, | |
2b100755 | 1338 | { "shrink", no_argument, NULL, 's' }, |
0d00bf58 SS |
1339 | { "report", no_argument, NULL, 'r' }, |
1340 | { "Size", no_argument, NULL, 'S'}, | |
1341 | { "tracking", no_argument, NULL, 't'}, | |
1342 | { "Totals", no_argument, NULL, 'T'}, | |
2b100755 SS |
1343 | { "validate", no_argument, NULL, 'v' }, |
1344 | { "zero", no_argument, NULL, 'z' }, | |
1345 | { "1ref", no_argument, NULL, '1'}, | |
4980a963 | 1346 | { "lines", required_argument, NULL, 'N'}, |
2651f6e7 | 1347 | { "Loss", no_argument, NULL, 'L'}, |
016c6cdf | 1348 | { "Xtotals", no_argument, NULL, 'X'}, |
a8ea0bf1 | 1349 | { "Bytes", no_argument, NULL, 'B'}, |
c09d8751 CL |
1350 | { NULL, 0, NULL, 0 } |
1351 | }; | |
1352 | ||
1353 | int main(int argc, char *argv[]) | |
1354 | { | |
1355 | int c; | |
1356 | int err; | |
1357 | char *pattern_source; | |
1358 | ||
1359 | page_size = getpagesize(); | |
c09d8751 | 1360 | |
a8ea0bf1 | 1361 | while ((c = getopt_long(argc, argv, "aAd::Defhil1noprstvzTSN:LXB", |
a87615b8 | 1362 | opts, NULL)) != -1) |
f32143a2 | 1363 | switch (c) { |
c09d8751 CL |
1364 | case '1': |
1365 | show_single_ref = 1; | |
1366 | break; | |
1367 | case 'a': | |
1368 | show_alias = 1; | |
1369 | break; | |
8ff12cfc CL |
1370 | case 'A': |
1371 | sort_active = 1; | |
1372 | break; | |
a87615b8 CL |
1373 | case 'd': |
1374 | set_debug = 1; | |
1375 | if (!debug_opt_scan(optarg)) | |
1376 | fatal("Invalid debug option '%s'\n", optarg); | |
1377 | break; | |
8ff12cfc CL |
1378 | case 'D': |
1379 | show_activity = 1; | |
1380 | break; | |
a87615b8 CL |
1381 | case 'e': |
1382 | show_empty = 1; | |
1383 | break; | |
c09d8751 CL |
1384 | case 'f': |
1385 | show_first_alias = 1; | |
1386 | break; | |
1387 | case 'h': | |
1388 | usage(); | |
1389 | return 0; | |
1390 | case 'i': | |
1391 | show_inverted = 1; | |
1392 | break; | |
1393 | case 'n': | |
1394 | show_numa = 1; | |
1395 | break; | |
a87615b8 CL |
1396 | case 'o': |
1397 | show_ops = 1; | |
1398 | break; | |
1399 | case 'r': | |
1400 | show_report = 1; | |
1401 | break; | |
c09d8751 CL |
1402 | case 's': |
1403 | shrink = 1; | |
1404 | break; | |
1405 | case 'l': | |
1406 | show_slab = 1; | |
1407 | break; | |
1408 | case 't': | |
1409 | show_track = 1; | |
1410 | break; | |
1411 | case 'v': | |
1412 | validate = 1; | |
1413 | break; | |
1414 | case 'z': | |
1415 | skip_zero = 0; | |
1416 | break; | |
1417 | case 'T': | |
1418 | show_totals = 1; | |
1419 | break; | |
1420 | case 'S': | |
1421 | sort_size = 1; | |
1422 | break; | |
4980a963 SS |
1423 | case 'N': |
1424 | if (optarg) { | |
1425 | output_lines = atoi(optarg); | |
1426 | if (output_lines < 1) | |
1427 | output_lines = 1; | |
1428 | } | |
1429 | break; | |
2651f6e7 SS |
1430 | case 'L': |
1431 | sort_loss = 1; | |
1432 | break; | |
016c6cdf SS |
1433 | case 'X': |
1434 | if (output_lines == -1) | |
1435 | output_lines = 1; | |
1436 | extended_totals = 1; | |
a8ea0bf1 SS |
1437 | show_bytes = 1; |
1438 | break; | |
1439 | case 'B': | |
1440 | show_bytes = 1; | |
016c6cdf | 1441 | break; |
c09d8751 CL |
1442 | default: |
1443 | fatal("%s: Invalid option '%c'\n", argv[0], optopt); | |
1444 | ||
1445 | } | |
1446 | ||
a87615b8 CL |
1447 | if (!show_slab && !show_alias && !show_track && !show_report |
1448 | && !validate && !shrink && !set_debug && !show_ops) | |
c09d8751 CL |
1449 | show_slab = 1; |
1450 | ||
1451 | if (argc > optind) | |
1452 | pattern_source = argv[optind]; | |
1453 | else | |
1454 | pattern_source = ".*"; | |
1455 | ||
1456 | err = regcomp(&pattern, pattern_source, REG_ICASE|REG_NOSUB); | |
1457 | if (err) | |
1458 | fatal("%s: Invalid pattern '%s' code %d\n", | |
1459 | argv[0], pattern_source, err); | |
1460 | read_slab_dir(); | |
016c6cdf | 1461 | if (show_alias) { |
c09d8751 | 1462 | alias(); |
016c6cdf SS |
1463 | } else if (extended_totals) { |
1464 | xtotals(); | |
1465 | } else if (show_totals) { | |
c09d8751 | 1466 | totals(); |
016c6cdf | 1467 | } else { |
c09d8751 CL |
1468 | link_slabs(); |
1469 | rename_slabs(); | |
1470 | sort_slabs(); | |
1471 | output_slabs(); | |
1472 | } | |
1473 | return 0; | |
1474 | } |