Commit | Line | Data |
---|---|---|
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) { | |
495 | printf("\nSlab Deactivation Ocurrences %%\n"); | |
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 | ||
513 | if (s->cmpxchg_double_fail || s->cmpxchg_double_cpu_fail) | |
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); | |
8ff12cfc CL |
517 | } |
518 | ||
b7ed698c | 519 | static void report(struct slabinfo *s) |
a87615b8 CL |
520 | { |
521 | if (strcmp(s->name, "*") == 0) | |
522 | return; | |
eefaca9c | 523 | |
a8ea0bf1 | 524 | printf("\nSlabcache: %-15s Aliases: %2d Order : %2d Objects: %lu\n", |
eefaca9c | 525 | s->name, s->aliases, s->order, s->objects); |
a87615b8 CL |
526 | if (s->hwcache_align) |
527 | printf("** Hardware cacheline aligned\n"); | |
528 | if (s->cache_dma) | |
529 | printf("** Memory is allocated in a special DMA zone\n"); | |
530 | if (s->destroy_by_rcu) | |
531 | printf("** Slabs are destroyed via RCU\n"); | |
532 | if (s->reclaim_account) | |
533 | printf("** Reclaim accounting active\n"); | |
534 | ||
535 | printf("\nSizes (bytes) Slabs Debug Memory\n"); | |
536 | printf("------------------------------------------------------------------------\n"); | |
537 | printf("Object : %7d Total : %7ld Sanity Checks : %s Total: %7ld\n", | |
538 | s->object_size, s->slabs, onoff(s->sanity_checks), | |
539 | s->slabs * (page_size << s->order)); | |
540 | printf("SlabObj: %7d Full : %7ld Redzoning : %s Used : %7ld\n", | |
541 | s->slab_size, s->slabs - s->partial - s->cpu_slabs, | |
542 | onoff(s->red_zone), s->objects * s->object_size); | |
543 | printf("SlabSiz: %7d Partial: %7ld Poisoning : %s Loss : %7ld\n", | |
544 | page_size << s->order, s->partial, onoff(s->poison), | |
545 | s->slabs * (page_size << s->order) - s->objects * s->object_size); | |
546 | printf("Loss : %7d CpuSlab: %7d Tracking : %s Lalig: %7ld\n", | |
547 | s->slab_size - s->object_size, s->cpu_slabs, onoff(s->store_user), | |
548 | (s->slab_size - s->object_size) * s->objects); | |
549 | printf("Align : %7d Objects: %7d Tracing : %s Lpadd: %7ld\n", | |
550 | s->align, s->objs_per_slab, onoff(s->trace), | |
551 | ((page_size << s->order) - s->objs_per_slab * s->slab_size) * | |
552 | s->slabs); | |
553 | ||
554 | ops(s); | |
555 | show_tracking(s); | |
556 | slab_numa(s, 1); | |
8ff12cfc | 557 | slab_stats(s); |
a87615b8 | 558 | } |
c09d8751 | 559 | |
b7ed698c | 560 | static void slabcache(struct slabinfo *s) |
c09d8751 CL |
561 | { |
562 | char size_str[20]; | |
563 | char dist_str[40]; | |
564 | char flags[20]; | |
565 | char *p = flags; | |
566 | ||
a87615b8 CL |
567 | if (strcmp(s->name, "*") == 0) |
568 | return; | |
569 | ||
570 | if (actual_slabs == 1) { | |
571 | report(s); | |
572 | return; | |
573 | } | |
574 | ||
575 | if (skip_zero && !show_empty && !s->slabs) | |
576 | return; | |
577 | ||
578 | if (show_empty && s->slabs) | |
c09d8751 CL |
579 | return; |
580 | ||
2651f6e7 SS |
581 | if (sort_loss == 0) |
582 | store_size(size_str, slab_size(s)); | |
583 | else | |
584 | store_size(size_str, slab_waste(s)); | |
205ab99d CL |
585 | snprintf(dist_str, 40, "%lu/%lu/%d", s->slabs - s->cpu_slabs, |
586 | s->partial, s->cpu_slabs); | |
c09d8751 CL |
587 | |
588 | if (!line++) | |
589 | first_line(); | |
590 | ||
591 | if (s->aliases) | |
592 | *p++ = '*'; | |
593 | if (s->cache_dma) | |
594 | *p++ = 'd'; | |
595 | if (s->hwcache_align) | |
596 | *p++ = 'A'; | |
597 | if (s->poison) | |
598 | *p++ = 'P'; | |
599 | if (s->reclaim_account) | |
600 | *p++ = 'a'; | |
601 | if (s->red_zone) | |
602 | *p++ = 'Z'; | |
603 | if (s->sanity_checks) | |
604 | *p++ = 'F'; | |
605 | if (s->store_user) | |
606 | *p++ = 'U'; | |
607 | if (s->trace) | |
608 | *p++ = 'T'; | |
609 | ||
610 | *p = 0; | |
8ff12cfc CL |
611 | if (show_activity) { |
612 | unsigned long total_alloc; | |
613 | unsigned long total_free; | |
614 | ||
615 | total_alloc = s->alloc_fastpath + s->alloc_slowpath; | |
616 | total_free = s->free_fastpath + s->free_slowpath; | |
617 | ||
9da4714a | 618 | printf("%-21s %8ld %10ld %10ld %3ld %3ld %5ld %1d %4ld %4ld\n", |
8ff12cfc CL |
619 | s->name, s->objects, |
620 | total_alloc, total_free, | |
621 | total_alloc ? (s->alloc_fastpath * 100 / total_alloc) : 0, | |
f715e6f1 | 622 | total_free ? (s->free_fastpath * 100 / total_free) : 0, |
9da4714a CL |
623 | s->order_fallback, s->order, s->cmpxchg_double_fail, |
624 | s->cmpxchg_double_cpu_fail); | |
016c6cdf | 625 | } else { |
a8ea0bf1 | 626 | printf("%-21s %8ld %7d %15s %14s %4d %1d %3ld %3ld %s\n", |
8ff12cfc CL |
627 | s->name, s->objects, s->object_size, size_str, dist_str, |
628 | s->objs_per_slab, s->order, | |
629 | s->slabs ? (s->partial * 100) / s->slabs : 100, | |
630 | s->slabs ? (s->objects * s->object_size * 100) / | |
631 | (s->slabs * (page_size << s->order)) : 100, | |
632 | flags); | |
016c6cdf | 633 | } |
c09d8751 CL |
634 | } |
635 | ||
a87615b8 CL |
636 | /* |
637 | * Analyze debug options. Return false if something is amiss. | |
638 | */ | |
b7ed698c | 639 | static int debug_opt_scan(char *opt) |
c09d8751 | 640 | { |
a87615b8 CL |
641 | if (!opt || !opt[0] || strcmp(opt, "-") == 0) |
642 | return 1; | |
643 | ||
644 | if (strcasecmp(opt, "a") == 0) { | |
645 | sanity = 1; | |
646 | poison = 1; | |
647 | redzone = 1; | |
648 | tracking = 1; | |
649 | return 1; | |
650 | } | |
c09d8751 | 651 | |
a87615b8 | 652 | for ( ; *opt; opt++) |
0d24db33 | 653 | switch (*opt) { |
a87615b8 CL |
654 | case 'F' : case 'f': |
655 | if (sanity) | |
656 | return 0; | |
657 | sanity = 1; | |
658 | break; | |
659 | case 'P' : case 'p': | |
660 | if (poison) | |
661 | return 0; | |
662 | poison = 1; | |
663 | break; | |
c09d8751 | 664 | |
a87615b8 CL |
665 | case 'Z' : case 'z': |
666 | if (redzone) | |
667 | return 0; | |
668 | redzone = 1; | |
669 | break; | |
c09d8751 | 670 | |
a87615b8 CL |
671 | case 'U' : case 'u': |
672 | if (tracking) | |
673 | return 0; | |
674 | tracking = 1; | |
675 | break; | |
c09d8751 | 676 | |
a87615b8 CL |
677 | case 'T' : case 't': |
678 | if (tracing) | |
679 | return 0; | |
680 | tracing = 1; | |
681 | break; | |
682 | default: | |
683 | return 0; | |
684 | } | |
685 | return 1; | |
c09d8751 CL |
686 | } |
687 | ||
b7ed698c | 688 | static int slab_empty(struct slabinfo *s) |
c09d8751 | 689 | { |
a87615b8 CL |
690 | if (s->objects > 0) |
691 | return 0; | |
c09d8751 | 692 | |
a87615b8 CL |
693 | /* |
694 | * We may still have slabs even if there are no objects. Shrinking will | |
695 | * remove them. | |
696 | */ | |
697 | if (s->slabs != 0) | |
698 | set_obj(s, "shrink", 1); | |
c09d8751 | 699 | |
a87615b8 CL |
700 | return 1; |
701 | } | |
702 | ||
b7ed698c | 703 | static void slab_debug(struct slabinfo *s) |
a87615b8 | 704 | { |
32f9306b CL |
705 | if (strcmp(s->name, "*") == 0) |
706 | return; | |
707 | ||
a87615b8 CL |
708 | if (sanity && !s->sanity_checks) { |
709 | set_obj(s, "sanity", 1); | |
710 | } | |
711 | if (!sanity && s->sanity_checks) { | |
712 | if (slab_empty(s)) | |
713 | set_obj(s, "sanity", 0); | |
714 | else | |
715 | fprintf(stderr, "%s not empty cannot disable sanity checks\n", s->name); | |
716 | } | |
717 | if (redzone && !s->red_zone) { | |
718 | if (slab_empty(s)) | |
719 | set_obj(s, "red_zone", 1); | |
720 | else | |
721 | fprintf(stderr, "%s not empty cannot enable redzoning\n", s->name); | |
722 | } | |
723 | if (!redzone && s->red_zone) { | |
724 | if (slab_empty(s)) | |
725 | set_obj(s, "red_zone", 0); | |
726 | else | |
727 | fprintf(stderr, "%s not empty cannot disable redzoning\n", s->name); | |
728 | } | |
729 | if (poison && !s->poison) { | |
730 | if (slab_empty(s)) | |
731 | set_obj(s, "poison", 1); | |
732 | else | |
733 | fprintf(stderr, "%s not empty cannot enable poisoning\n", s->name); | |
734 | } | |
735 | if (!poison && s->poison) { | |
736 | if (slab_empty(s)) | |
737 | set_obj(s, "poison", 0); | |
738 | else | |
739 | fprintf(stderr, "%s not empty cannot disable poisoning\n", s->name); | |
740 | } | |
741 | if (tracking && !s->store_user) { | |
742 | if (slab_empty(s)) | |
743 | set_obj(s, "store_user", 1); | |
744 | else | |
745 | fprintf(stderr, "%s not empty cannot enable tracking\n", s->name); | |
746 | } | |
747 | if (!tracking && s->store_user) { | |
748 | if (slab_empty(s)) | |
749 | set_obj(s, "store_user", 0); | |
750 | else | |
751 | fprintf(stderr, "%s not empty cannot disable tracking\n", s->name); | |
752 | } | |
753 | if (tracing && !s->trace) { | |
754 | if (slabs == 1) | |
755 | set_obj(s, "trace", 1); | |
756 | else | |
757 | fprintf(stderr, "%s can only enable trace for one slab at a time\n", s->name); | |
758 | } | |
759 | if (!tracing && s->trace) | |
760 | set_obj(s, "trace", 1); | |
c09d8751 CL |
761 | } |
762 | ||
b7ed698c | 763 | static void totals(void) |
c09d8751 CL |
764 | { |
765 | struct slabinfo *s; | |
766 | ||
767 | int used_slabs = 0; | |
768 | char b1[20], b2[20], b3[20], b4[20]; | |
769 | unsigned long long max = 1ULL << 63; | |
770 | ||
771 | /* Object size */ | |
772 | unsigned long long min_objsize = max, max_objsize = 0, avg_objsize; | |
773 | ||
774 | /* Number of partial slabs in a slabcache */ | |
775 | unsigned long long min_partial = max, max_partial = 0, | |
776 | avg_partial, total_partial = 0; | |
777 | ||
778 | /* Number of slabs in a slab cache */ | |
779 | unsigned long long min_slabs = max, max_slabs = 0, | |
780 | avg_slabs, total_slabs = 0; | |
781 | ||
782 | /* Size of the whole slab */ | |
783 | unsigned long long min_size = max, max_size = 0, | |
784 | avg_size, total_size = 0; | |
785 | ||
786 | /* Bytes used for object storage in a slab */ | |
787 | unsigned long long min_used = max, max_used = 0, | |
788 | avg_used, total_used = 0; | |
789 | ||
790 | /* Waste: Bytes used for alignment and padding */ | |
791 | unsigned long long min_waste = max, max_waste = 0, | |
792 | avg_waste, total_waste = 0; | |
793 | /* Number of objects in a slab */ | |
794 | unsigned long long min_objects = max, max_objects = 0, | |
795 | avg_objects, total_objects = 0; | |
796 | /* Waste per object */ | |
797 | unsigned long long min_objwaste = max, | |
798 | max_objwaste = 0, avg_objwaste, | |
799 | total_objwaste = 0; | |
800 | ||
801 | /* Memory per object */ | |
802 | unsigned long long min_memobj = max, | |
803 | max_memobj = 0, avg_memobj, | |
804 | total_objsize = 0; | |
805 | ||
806 | /* Percentage of partial slabs per slab */ | |
807 | unsigned long min_ppart = 100, max_ppart = 0, | |
808 | avg_ppart, total_ppart = 0; | |
809 | ||
810 | /* Number of objects in partial slabs */ | |
811 | unsigned long min_partobj = max, max_partobj = 0, | |
812 | avg_partobj, total_partobj = 0; | |
813 | ||
814 | /* Percentage of partial objects of all objects in a slab */ | |
815 | unsigned long min_ppartobj = 100, max_ppartobj = 0, | |
816 | avg_ppartobj, total_ppartobj = 0; | |
817 | ||
818 | ||
819 | for (s = slabinfo; s < slabinfo + slabs; s++) { | |
820 | unsigned long long size; | |
821 | unsigned long used; | |
822 | unsigned long long wasted; | |
823 | unsigned long long objwaste; | |
c09d8751 CL |
824 | unsigned long percentage_partial_slabs; |
825 | unsigned long percentage_partial_objs; | |
826 | ||
827 | if (!s->slabs || !s->objects) | |
828 | continue; | |
829 | ||
830 | used_slabs++; | |
831 | ||
832 | size = slab_size(s); | |
833 | used = s->objects * s->object_size; | |
834 | wasted = size - used; | |
835 | objwaste = s->slab_size - s->object_size; | |
836 | ||
c09d8751 CL |
837 | percentage_partial_slabs = s->partial * 100 / s->slabs; |
838 | if (percentage_partial_slabs > 100) | |
839 | percentage_partial_slabs = 100; | |
840 | ||
205ab99d | 841 | percentage_partial_objs = s->objects_partial * 100 |
c09d8751 CL |
842 | / s->objects; |
843 | ||
844 | if (percentage_partial_objs > 100) | |
845 | percentage_partial_objs = 100; | |
846 | ||
847 | if (s->object_size < min_objsize) | |
848 | min_objsize = s->object_size; | |
849 | if (s->partial < min_partial) | |
850 | min_partial = s->partial; | |
851 | if (s->slabs < min_slabs) | |
852 | min_slabs = s->slabs; | |
853 | if (size < min_size) | |
854 | min_size = size; | |
855 | if (wasted < min_waste) | |
856 | min_waste = wasted; | |
857 | if (objwaste < min_objwaste) | |
858 | min_objwaste = objwaste; | |
859 | if (s->objects < min_objects) | |
860 | min_objects = s->objects; | |
861 | if (used < min_used) | |
862 | min_used = used; | |
205ab99d CL |
863 | if (s->objects_partial < min_partobj) |
864 | min_partobj = s->objects_partial; | |
c09d8751 CL |
865 | if (percentage_partial_slabs < min_ppart) |
866 | min_ppart = percentage_partial_slabs; | |
867 | if (percentage_partial_objs < min_ppartobj) | |
868 | min_ppartobj = percentage_partial_objs; | |
869 | if (s->slab_size < min_memobj) | |
870 | min_memobj = s->slab_size; | |
871 | ||
872 | if (s->object_size > max_objsize) | |
873 | max_objsize = s->object_size; | |
874 | if (s->partial > max_partial) | |
875 | max_partial = s->partial; | |
876 | if (s->slabs > max_slabs) | |
877 | max_slabs = s->slabs; | |
878 | if (size > max_size) | |
879 | max_size = size; | |
880 | if (wasted > max_waste) | |
881 | max_waste = wasted; | |
882 | if (objwaste > max_objwaste) | |
883 | max_objwaste = objwaste; | |
884 | if (s->objects > max_objects) | |
885 | max_objects = s->objects; | |
886 | if (used > max_used) | |
887 | max_used = used; | |
205ab99d CL |
888 | if (s->objects_partial > max_partobj) |
889 | max_partobj = s->objects_partial; | |
c09d8751 CL |
890 | if (percentage_partial_slabs > max_ppart) |
891 | max_ppart = percentage_partial_slabs; | |
892 | if (percentage_partial_objs > max_ppartobj) | |
893 | max_ppartobj = percentage_partial_objs; | |
894 | if (s->slab_size > max_memobj) | |
895 | max_memobj = s->slab_size; | |
896 | ||
897 | total_partial += s->partial; | |
898 | total_slabs += s->slabs; | |
899 | total_size += size; | |
900 | total_waste += wasted; | |
901 | ||
902 | total_objects += s->objects; | |
903 | total_used += used; | |
205ab99d | 904 | total_partobj += s->objects_partial; |
c09d8751 CL |
905 | total_ppart += percentage_partial_slabs; |
906 | total_ppartobj += percentage_partial_objs; | |
907 | ||
908 | total_objwaste += s->objects * objwaste; | |
909 | total_objsize += s->objects * s->slab_size; | |
910 | } | |
911 | ||
912 | if (!total_objects) { | |
913 | printf("No objects\n"); | |
914 | return; | |
915 | } | |
916 | if (!used_slabs) { | |
917 | printf("No slabs\n"); | |
918 | return; | |
919 | } | |
920 | ||
921 | /* Per slab averages */ | |
922 | avg_partial = total_partial / used_slabs; | |
923 | avg_slabs = total_slabs / used_slabs; | |
924 | avg_size = total_size / used_slabs; | |
925 | avg_waste = total_waste / used_slabs; | |
926 | ||
927 | avg_objects = total_objects / used_slabs; | |
928 | avg_used = total_used / used_slabs; | |
929 | avg_partobj = total_partobj / used_slabs; | |
930 | avg_ppart = total_ppart / used_slabs; | |
931 | avg_ppartobj = total_ppartobj / used_slabs; | |
932 | ||
933 | /* Per object object sizes */ | |
934 | avg_objsize = total_used / total_objects; | |
935 | avg_objwaste = total_objwaste / total_objects; | |
936 | avg_partobj = total_partobj * 100 / total_objects; | |
937 | avg_memobj = total_objsize / total_objects; | |
938 | ||
939 | printf("Slabcache Totals\n"); | |
940 | printf("----------------\n"); | |
a8ea0bf1 | 941 | printf("Slabcaches : %15d Aliases : %11d->%-3d Active: %3d\n", |
c09d8751 CL |
942 | slabs, aliases, alias_targets, used_slabs); |
943 | ||
944 | store_size(b1, total_size);store_size(b2, total_waste); | |
945 | store_size(b3, total_waste * 100 / total_used); | |
a8ea0bf1 | 946 | printf("Memory used: %15s # Loss : %15s MRatio:%6s%%\n", b1, b2, b3); |
c09d8751 CL |
947 | |
948 | store_size(b1, total_objects);store_size(b2, total_partobj); | |
949 | store_size(b3, total_partobj * 100 / total_objects); | |
a8ea0bf1 | 950 | printf("# Objects : %15s # PartObj: %15s ORatio:%6s%%\n", b1, b2, b3); |
c09d8751 CL |
951 | |
952 | printf("\n"); | |
a8ea0bf1 SS |
953 | printf("Per Cache Average " |
954 | "Min Max Total\n"); | |
955 | printf("---------------------------------------" | |
956 | "-------------------------------------\n"); | |
c09d8751 CL |
957 | |
958 | store_size(b1, avg_objects);store_size(b2, min_objects); | |
959 | store_size(b3, max_objects);store_size(b4, total_objects); | |
a8ea0bf1 | 960 | printf("#Objects %15s %15s %15s %15s\n", |
c09d8751 CL |
961 | b1, b2, b3, b4); |
962 | ||
963 | store_size(b1, avg_slabs);store_size(b2, min_slabs); | |
964 | store_size(b3, max_slabs);store_size(b4, total_slabs); | |
a8ea0bf1 | 965 | printf("#Slabs %15s %15s %15s %15s\n", |
c09d8751 CL |
966 | b1, b2, b3, b4); |
967 | ||
968 | store_size(b1, avg_partial);store_size(b2, min_partial); | |
969 | store_size(b3, max_partial);store_size(b4, total_partial); | |
a8ea0bf1 | 970 | printf("#PartSlab %15s %15s %15s %15s\n", |
c09d8751 CL |
971 | b1, b2, b3, b4); |
972 | store_size(b1, avg_ppart);store_size(b2, min_ppart); | |
973 | store_size(b3, max_ppart); | |
974 | store_size(b4, total_partial * 100 / total_slabs); | |
a8ea0bf1 | 975 | printf("%%PartSlab%15s%% %15s%% %15s%% %15s%%\n", |
c09d8751 CL |
976 | b1, b2, b3, b4); |
977 | ||
978 | store_size(b1, avg_partobj);store_size(b2, min_partobj); | |
979 | store_size(b3, max_partobj); | |
980 | store_size(b4, total_partobj); | |
a8ea0bf1 | 981 | printf("PartObjs %15s %15s %15s %15s\n", |
c09d8751 CL |
982 | b1, b2, b3, b4); |
983 | ||
984 | store_size(b1, avg_ppartobj);store_size(b2, min_ppartobj); | |
985 | store_size(b3, max_ppartobj); | |
986 | store_size(b4, total_partobj * 100 / total_objects); | |
a8ea0bf1 | 987 | printf("%% PartObj%15s%% %15s%% %15s%% %15s%%\n", |
c09d8751 CL |
988 | b1, b2, b3, b4); |
989 | ||
990 | store_size(b1, avg_size);store_size(b2, min_size); | |
991 | store_size(b3, max_size);store_size(b4, total_size); | |
a8ea0bf1 | 992 | printf("Memory %15s %15s %15s %15s\n", |
c09d8751 CL |
993 | b1, b2, b3, b4); |
994 | ||
995 | store_size(b1, avg_used);store_size(b2, min_used); | |
996 | store_size(b3, max_used);store_size(b4, total_used); | |
a8ea0bf1 | 997 | printf("Used %15s %15s %15s %15s\n", |
c09d8751 CL |
998 | b1, b2, b3, b4); |
999 | ||
1000 | store_size(b1, avg_waste);store_size(b2, min_waste); | |
1001 | store_size(b3, max_waste);store_size(b4, total_waste); | |
a8ea0bf1 | 1002 | printf("Loss %15s %15s %15s %15s\n", |
c09d8751 CL |
1003 | b1, b2, b3, b4); |
1004 | ||
1005 | printf("\n"); | |
a8ea0bf1 SS |
1006 | printf("Per Object Average " |
1007 | "Min Max\n"); | |
1008 | printf("---------------------------------------" | |
1009 | "--------------------\n"); | |
c09d8751 CL |
1010 | |
1011 | store_size(b1, avg_memobj);store_size(b2, min_memobj); | |
1012 | store_size(b3, max_memobj); | |
a8ea0bf1 | 1013 | printf("Memory %15s %15s %15s\n", |
c09d8751 CL |
1014 | b1, b2, b3); |
1015 | store_size(b1, avg_objsize);store_size(b2, min_objsize); | |
1016 | store_size(b3, max_objsize); | |
a8ea0bf1 | 1017 | printf("User %15s %15s %15s\n", |
c09d8751 CL |
1018 | b1, b2, b3); |
1019 | ||
1020 | store_size(b1, avg_objwaste);store_size(b2, min_objwaste); | |
1021 | store_size(b3, max_objwaste); | |
a8ea0bf1 | 1022 | printf("Loss %15s %15s %15s\n", |
c09d8751 CL |
1023 | b1, b2, b3); |
1024 | } | |
1025 | ||
b7ed698c | 1026 | static void sort_slabs(void) |
c09d8751 CL |
1027 | { |
1028 | struct slabinfo *s1,*s2; | |
1029 | ||
1030 | for (s1 = slabinfo; s1 < slabinfo + slabs; s1++) { | |
1031 | for (s2 = s1 + 1; s2 < slabinfo + slabs; s2++) { | |
1032 | int result; | |
1033 | ||
1034 | if (sort_size) | |
1035 | result = slab_size(s1) < slab_size(s2); | |
8ff12cfc CL |
1036 | else if (sort_active) |
1037 | result = slab_activity(s1) < slab_activity(s2); | |
2651f6e7 SS |
1038 | else if (sort_loss) |
1039 | result = slab_waste(s1) < slab_waste(s2); | |
c09d8751 CL |
1040 | else |
1041 | result = strcasecmp(s1->name, s2->name); | |
1042 | ||
1043 | if (show_inverted) | |
1044 | result = -result; | |
1045 | ||
1046 | if (result > 0) { | |
1047 | struct slabinfo t; | |
1048 | ||
1049 | memcpy(&t, s1, sizeof(struct slabinfo)); | |
1050 | memcpy(s1, s2, sizeof(struct slabinfo)); | |
1051 | memcpy(s2, &t, sizeof(struct slabinfo)); | |
1052 | } | |
1053 | } | |
1054 | } | |
1055 | } | |
1056 | ||
b7ed698c | 1057 | static void sort_aliases(void) |
c09d8751 CL |
1058 | { |
1059 | struct aliasinfo *a1,*a2; | |
1060 | ||
1061 | for (a1 = aliasinfo; a1 < aliasinfo + aliases; a1++) { | |
1062 | for (a2 = a1 + 1; a2 < aliasinfo + aliases; a2++) { | |
1063 | char *n1, *n2; | |
1064 | ||
1065 | n1 = a1->name; | |
1066 | n2 = a2->name; | |
1067 | if (show_alias && !show_inverted) { | |
1068 | n1 = a1->ref; | |
1069 | n2 = a2->ref; | |
1070 | } | |
1071 | if (strcasecmp(n1, n2) > 0) { | |
1072 | struct aliasinfo t; | |
1073 | ||
1074 | memcpy(&t, a1, sizeof(struct aliasinfo)); | |
1075 | memcpy(a1, a2, sizeof(struct aliasinfo)); | |
1076 | memcpy(a2, &t, sizeof(struct aliasinfo)); | |
1077 | } | |
1078 | } | |
1079 | } | |
1080 | } | |
1081 | ||
b7ed698c | 1082 | static void link_slabs(void) |
c09d8751 CL |
1083 | { |
1084 | struct aliasinfo *a; | |
1085 | struct slabinfo *s; | |
1086 | ||
1087 | for (a = aliasinfo; a < aliasinfo + aliases; a++) { | |
1088 | ||
a87615b8 | 1089 | for (s = slabinfo; s < slabinfo + slabs; s++) |
c09d8751 CL |
1090 | if (strcmp(a->ref, s->name) == 0) { |
1091 | a->slab = s; | |
1092 | s->refs++; | |
1093 | break; | |
1094 | } | |
1095 | if (s == slabinfo + slabs) | |
1096 | fatal("Unresolved alias %s\n", a->ref); | |
1097 | } | |
1098 | } | |
1099 | ||
b7ed698c | 1100 | static void alias(void) |
c09d8751 CL |
1101 | { |
1102 | struct aliasinfo *a; | |
1103 | char *active = NULL; | |
1104 | ||
1105 | sort_aliases(); | |
1106 | link_slabs(); | |
1107 | ||
1108 | for(a = aliasinfo; a < aliasinfo + aliases; a++) { | |
1109 | ||
1110 | if (!show_single_ref && a->slab->refs == 1) | |
1111 | continue; | |
1112 | ||
1113 | if (!show_inverted) { | |
1114 | if (active) { | |
1115 | if (strcmp(a->slab->name, active) == 0) { | |
1116 | printf(" %s", a->name); | |
1117 | continue; | |
1118 | } | |
1119 | } | |
a87615b8 | 1120 | printf("\n%-12s <- %s", a->slab->name, a->name); |
c09d8751 CL |
1121 | active = a->slab->name; |
1122 | } | |
1123 | else | |
a8ea0bf1 | 1124 | printf("%-15s -> %s\n", a->name, a->slab->name); |
c09d8751 CL |
1125 | } |
1126 | if (active) | |
1127 | printf("\n"); | |
1128 | } | |
1129 | ||
1130 | ||
b7ed698c | 1131 | static void rename_slabs(void) |
c09d8751 CL |
1132 | { |
1133 | struct slabinfo *s; | |
1134 | struct aliasinfo *a; | |
1135 | ||
1136 | for (s = slabinfo; s < slabinfo + slabs; s++) { | |
1137 | if (*s->name != ':') | |
1138 | continue; | |
1139 | ||
1140 | if (s->refs > 1 && !show_first_alias) | |
1141 | continue; | |
1142 | ||
1143 | a = find_one_alias(s); | |
1144 | ||
a87615b8 CL |
1145 | if (a) |
1146 | s->name = a->name; | |
1147 | else { | |
1148 | s->name = "*"; | |
1149 | actual_slabs--; | |
1150 | } | |
c09d8751 CL |
1151 | } |
1152 | } | |
1153 | ||
b7ed698c | 1154 | static int slab_mismatch(char *slab) |
c09d8751 CL |
1155 | { |
1156 | return regexec(&pattern, slab, 0, NULL, 0); | |
1157 | } | |
1158 | ||
b7ed698c | 1159 | static void read_slab_dir(void) |
c09d8751 CL |
1160 | { |
1161 | DIR *dir; | |
1162 | struct dirent *de; | |
1163 | struct slabinfo *slab = slabinfo; | |
1164 | struct aliasinfo *alias = aliasinfo; | |
1165 | char *p; | |
1166 | char *t; | |
1167 | int count; | |
1168 | ||
b6c24de7 | 1169 | if (chdir("/sys/kernel/slab") && chdir("/sys/slab")) |
a87615b8 CL |
1170 | fatal("SYSFS support for SLUB not active\n"); |
1171 | ||
c09d8751 CL |
1172 | dir = opendir("."); |
1173 | while ((de = readdir(dir))) { | |
1174 | if (de->d_name[0] == '.' || | |
a87615b8 CL |
1175 | (de->d_name[0] != ':' && slab_mismatch(de->d_name))) |
1176 | continue; | |
c09d8751 CL |
1177 | switch (de->d_type) { |
1178 | case DT_LNK: | |
0d24db33 | 1179 | alias->name = strdup(de->d_name); |
fe353178 | 1180 | count = readlink(de->d_name, buffer, sizeof(buffer)-1); |
c09d8751 CL |
1181 | |
1182 | if (count < 0) | |
1183 | fatal("Cannot read symlink %s\n", de->d_name); | |
1184 | ||
1185 | buffer[count] = 0; | |
1186 | p = buffer + count; | |
1187 | while (p > buffer && p[-1] != '/') | |
1188 | p--; | |
1189 | alias->ref = strdup(p); | |
1190 | alias++; | |
1191 | break; | |
1192 | case DT_DIR: | |
1193 | if (chdir(de->d_name)) | |
1194 | fatal("Unable to access slab %s\n", slab->name); | |
0d24db33 | 1195 | slab->name = strdup(de->d_name); |
c09d8751 CL |
1196 | slab->alias = 0; |
1197 | slab->refs = 0; | |
1198 | slab->aliases = get_obj("aliases"); | |
1199 | slab->align = get_obj("align"); | |
1200 | slab->cache_dma = get_obj("cache_dma"); | |
1201 | slab->cpu_slabs = get_obj("cpu_slabs"); | |
1202 | slab->destroy_by_rcu = get_obj("destroy_by_rcu"); | |
1203 | slab->hwcache_align = get_obj("hwcache_align"); | |
1204 | slab->object_size = get_obj("object_size"); | |
1205 | slab->objects = get_obj("objects"); | |
205ab99d CL |
1206 | slab->objects_partial = get_obj("objects_partial"); |
1207 | slab->objects_total = get_obj("objects_total"); | |
c09d8751 CL |
1208 | slab->objs_per_slab = get_obj("objs_per_slab"); |
1209 | slab->order = get_obj("order"); | |
1210 | slab->partial = get_obj("partial"); | |
1211 | slab->partial = get_obj_and_str("partial", &t); | |
1212 | decode_numa_list(slab->numa_partial, t); | |
f32143a2 | 1213 | free(t); |
c09d8751 CL |
1214 | slab->poison = get_obj("poison"); |
1215 | slab->reclaim_account = get_obj("reclaim_account"); | |
1216 | slab->red_zone = get_obj("red_zone"); | |
1217 | slab->sanity_checks = get_obj("sanity_checks"); | |
1218 | slab->slab_size = get_obj("slab_size"); | |
1219 | slab->slabs = get_obj_and_str("slabs", &t); | |
1220 | decode_numa_list(slab->numa, t); | |
f32143a2 | 1221 | free(t); |
c09d8751 CL |
1222 | slab->store_user = get_obj("store_user"); |
1223 | slab->trace = get_obj("trace"); | |
8ff12cfc CL |
1224 | slab->alloc_fastpath = get_obj("alloc_fastpath"); |
1225 | slab->alloc_slowpath = get_obj("alloc_slowpath"); | |
1226 | slab->free_fastpath = get_obj("free_fastpath"); | |
1227 | slab->free_slowpath = get_obj("free_slowpath"); | |
1228 | slab->free_frozen= get_obj("free_frozen"); | |
1229 | slab->free_add_partial = get_obj("free_add_partial"); | |
1230 | slab->free_remove_partial = get_obj("free_remove_partial"); | |
1231 | slab->alloc_from_partial = get_obj("alloc_from_partial"); | |
1232 | slab->alloc_slab = get_obj("alloc_slab"); | |
1233 | slab->alloc_refill = get_obj("alloc_refill"); | |
1234 | slab->free_slab = get_obj("free_slab"); | |
1235 | slab->cpuslab_flush = get_obj("cpuslab_flush"); | |
1236 | slab->deactivate_full = get_obj("deactivate_full"); | |
1237 | slab->deactivate_empty = get_obj("deactivate_empty"); | |
1238 | slab->deactivate_to_head = get_obj("deactivate_to_head"); | |
1239 | slab->deactivate_to_tail = get_obj("deactivate_to_tail"); | |
1240 | slab->deactivate_remote_frees = get_obj("deactivate_remote_frees"); | |
f715e6f1 | 1241 | slab->order_fallback = get_obj("order_fallback"); |
9da4714a CL |
1242 | slab->cmpxchg_double_cpu_fail = get_obj("cmpxchg_double_cpu_fail"); |
1243 | slab->cmpxchg_double_fail = get_obj("cmpxchg_double_fail"); | |
aca726a0 CL |
1244 | slab->cpu_partial_alloc = get_obj("cpu_partial_alloc"); |
1245 | slab->cpu_partial_free = get_obj("cpu_partial_free"); | |
9da4714a CL |
1246 | slab->alloc_node_mismatch = get_obj("alloc_node_mismatch"); |
1247 | slab->deactivate_bypass = get_obj("deactivate_bypass"); | |
c09d8751 CL |
1248 | chdir(".."); |
1249 | if (slab->name[0] == ':') | |
1250 | alias_targets++; | |
1251 | slab++; | |
1252 | break; | |
1253 | default : | |
1254 | fatal("Unknown file type %lx\n", de->d_type); | |
1255 | } | |
1256 | } | |
1257 | closedir(dir); | |
1258 | slabs = slab - slabinfo; | |
a87615b8 | 1259 | actual_slabs = slabs; |
c09d8751 CL |
1260 | aliases = alias - aliasinfo; |
1261 | if (slabs > MAX_SLABS) | |
1262 | fatal("Too many slabs\n"); | |
1263 | if (aliases > MAX_ALIASES) | |
1264 | fatal("Too many aliases\n"); | |
1265 | } | |
1266 | ||
b7ed698c | 1267 | static void output_slabs(void) |
c09d8751 CL |
1268 | { |
1269 | struct slabinfo *slab; | |
016c6cdf | 1270 | int lines = output_lines; |
c09d8751 | 1271 | |
4980a963 | 1272 | for (slab = slabinfo; (slab < slabinfo + slabs) && |
016c6cdf | 1273 | lines != 0; slab++) { |
c09d8751 CL |
1274 | |
1275 | if (slab->alias) | |
1276 | continue; | |
1277 | ||
016c6cdf SS |
1278 | if (lines != -1) |
1279 | lines--; | |
c09d8751 CL |
1280 | |
1281 | if (show_numa) | |
a87615b8 CL |
1282 | slab_numa(slab, 0); |
1283 | else if (show_track) | |
c09d8751 | 1284 | show_tracking(slab); |
a87615b8 | 1285 | else if (validate) |
c09d8751 | 1286 | slab_validate(slab); |
a87615b8 | 1287 | else if (shrink) |
c09d8751 | 1288 | slab_shrink(slab); |
a87615b8 CL |
1289 | else if (set_debug) |
1290 | slab_debug(slab); | |
1291 | else if (show_ops) | |
1292 | ops(slab); | |
1293 | else if (show_slab) | |
1294 | slabcache(slab); | |
eefaca9c CL |
1295 | else if (show_report) |
1296 | report(slab); | |
c09d8751 CL |
1297 | } |
1298 | } | |
1299 | ||
016c6cdf SS |
1300 | static void xtotals(void) |
1301 | { | |
1302 | totals(); | |
1303 | ||
1304 | link_slabs(); | |
1305 | rename_slabs(); | |
1306 | ||
1307 | printf("\nSlabs sorted by size\n"); | |
a8ea0bf1 | 1308 | printf("--------------------\n"); |
016c6cdf SS |
1309 | sort_loss = 0; |
1310 | sort_size = 1; | |
1311 | sort_slabs(); | |
1312 | output_slabs(); | |
1313 | ||
1314 | printf("\nSlabs sorted by loss\n"); | |
a8ea0bf1 | 1315 | printf("--------------------\n"); |
016c6cdf SS |
1316 | line = 0; |
1317 | sort_loss = 1; | |
1318 | sort_size = 0; | |
1319 | sort_slabs(); | |
1320 | output_slabs(); | |
1321 | printf("\n"); | |
1322 | } | |
1323 | ||
c09d8751 | 1324 | struct option opts[] = { |
2b100755 SS |
1325 | { "aliases", no_argument, NULL, 'a' }, |
1326 | { "activity", no_argument, NULL, 'A' }, | |
1327 | { "debug", optional_argument, NULL, 'd' }, | |
1328 | { "display-activity", no_argument, NULL, 'D' }, | |
1329 | { "empty", no_argument, NULL, 'e' }, | |
1330 | { "first-alias", no_argument, NULL, 'f' }, | |
1331 | { "help", no_argument, NULL, 'h' }, | |
1332 | { "inverted", no_argument, NULL, 'i'}, | |
0d00bf58 | 1333 | { "slabs", no_argument, NULL, 'l' }, |
2b100755 SS |
1334 | { "numa", no_argument, NULL, 'n' }, |
1335 | { "ops", no_argument, NULL, 'o' }, | |
2b100755 | 1336 | { "shrink", no_argument, NULL, 's' }, |
0d00bf58 SS |
1337 | { "report", no_argument, NULL, 'r' }, |
1338 | { "Size", no_argument, NULL, 'S'}, | |
1339 | { "tracking", no_argument, NULL, 't'}, | |
1340 | { "Totals", no_argument, NULL, 'T'}, | |
2b100755 SS |
1341 | { "validate", no_argument, NULL, 'v' }, |
1342 | { "zero", no_argument, NULL, 'z' }, | |
1343 | { "1ref", no_argument, NULL, '1'}, | |
4980a963 | 1344 | { "lines", required_argument, NULL, 'N'}, |
2651f6e7 | 1345 | { "Loss", no_argument, NULL, 'L'}, |
016c6cdf | 1346 | { "Xtotals", no_argument, NULL, 'X'}, |
a8ea0bf1 | 1347 | { "Bytes", no_argument, NULL, 'B'}, |
c09d8751 CL |
1348 | { NULL, 0, NULL, 0 } |
1349 | }; | |
1350 | ||
1351 | int main(int argc, char *argv[]) | |
1352 | { | |
1353 | int c; | |
1354 | int err; | |
1355 | char *pattern_source; | |
1356 | ||
1357 | page_size = getpagesize(); | |
c09d8751 | 1358 | |
a8ea0bf1 | 1359 | while ((c = getopt_long(argc, argv, "aAd::Defhil1noprstvzTSN:LXB", |
a87615b8 | 1360 | opts, NULL)) != -1) |
f32143a2 | 1361 | switch (c) { |
c09d8751 CL |
1362 | case '1': |
1363 | show_single_ref = 1; | |
1364 | break; | |
1365 | case 'a': | |
1366 | show_alias = 1; | |
1367 | break; | |
8ff12cfc CL |
1368 | case 'A': |
1369 | sort_active = 1; | |
1370 | break; | |
a87615b8 CL |
1371 | case 'd': |
1372 | set_debug = 1; | |
1373 | if (!debug_opt_scan(optarg)) | |
1374 | fatal("Invalid debug option '%s'\n", optarg); | |
1375 | break; | |
8ff12cfc CL |
1376 | case 'D': |
1377 | show_activity = 1; | |
1378 | break; | |
a87615b8 CL |
1379 | case 'e': |
1380 | show_empty = 1; | |
1381 | break; | |
c09d8751 CL |
1382 | case 'f': |
1383 | show_first_alias = 1; | |
1384 | break; | |
1385 | case 'h': | |
1386 | usage(); | |
1387 | return 0; | |
1388 | case 'i': | |
1389 | show_inverted = 1; | |
1390 | break; | |
1391 | case 'n': | |
1392 | show_numa = 1; | |
1393 | break; | |
a87615b8 CL |
1394 | case 'o': |
1395 | show_ops = 1; | |
1396 | break; | |
1397 | case 'r': | |
1398 | show_report = 1; | |
1399 | break; | |
c09d8751 CL |
1400 | case 's': |
1401 | shrink = 1; | |
1402 | break; | |
1403 | case 'l': | |
1404 | show_slab = 1; | |
1405 | break; | |
1406 | case 't': | |
1407 | show_track = 1; | |
1408 | break; | |
1409 | case 'v': | |
1410 | validate = 1; | |
1411 | break; | |
1412 | case 'z': | |
1413 | skip_zero = 0; | |
1414 | break; | |
1415 | case 'T': | |
1416 | show_totals = 1; | |
1417 | break; | |
1418 | case 'S': | |
1419 | sort_size = 1; | |
1420 | break; | |
4980a963 SS |
1421 | case 'N': |
1422 | if (optarg) { | |
1423 | output_lines = atoi(optarg); | |
1424 | if (output_lines < 1) | |
1425 | output_lines = 1; | |
1426 | } | |
1427 | break; | |
2651f6e7 SS |
1428 | case 'L': |
1429 | sort_loss = 1; | |
1430 | break; | |
016c6cdf SS |
1431 | case 'X': |
1432 | if (output_lines == -1) | |
1433 | output_lines = 1; | |
1434 | extended_totals = 1; | |
a8ea0bf1 SS |
1435 | show_bytes = 1; |
1436 | break; | |
1437 | case 'B': | |
1438 | show_bytes = 1; | |
016c6cdf | 1439 | break; |
c09d8751 CL |
1440 | default: |
1441 | fatal("%s: Invalid option '%c'\n", argv[0], optopt); | |
1442 | ||
1443 | } | |
1444 | ||
a87615b8 CL |
1445 | if (!show_slab && !show_alias && !show_track && !show_report |
1446 | && !validate && !shrink && !set_debug && !show_ops) | |
c09d8751 CL |
1447 | show_slab = 1; |
1448 | ||
1449 | if (argc > optind) | |
1450 | pattern_source = argv[optind]; | |
1451 | else | |
1452 | pattern_source = ".*"; | |
1453 | ||
1454 | err = regcomp(&pattern, pattern_source, REG_ICASE|REG_NOSUB); | |
1455 | if (err) | |
1456 | fatal("%s: Invalid pattern '%s' code %d\n", | |
1457 | argv[0], pattern_source, err); | |
1458 | read_slab_dir(); | |
016c6cdf | 1459 | if (show_alias) { |
c09d8751 | 1460 | alias(); |
016c6cdf SS |
1461 | } else if (extended_totals) { |
1462 | xtotals(); | |
1463 | } else if (show_totals) { | |
c09d8751 | 1464 | totals(); |
016c6cdf | 1465 | } else { |
c09d8751 CL |
1466 | link_slabs(); |
1467 | rename_slabs(); | |
1468 | sort_slabs(); | |
1469 | output_slabs(); | |
1470 | } | |
1471 | return 0; | |
1472 | } |