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Commit | Line | Data |
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c09d8751 CL |
1 | /* |
2 | * Slabinfo: Tool to get reports about slabs | |
3 | * | |
cde53535 | 4 | * (C) 2007 sgi, Christoph Lameter |
9da4714a | 5 | * (C) 2011 Linux Foundation, Christoph Lameter |
c09d8751 | 6 | * |
9da4714a | 7 | * Compile with: |
c09d8751 CL |
8 | * |
9 | * gcc -o slabinfo slabinfo.c | |
10 | */ | |
11 | #include <stdio.h> | |
12 | #include <stdlib.h> | |
13 | #include <sys/types.h> | |
14 | #include <dirent.h> | |
f32143a2 | 15 | #include <strings.h> |
c09d8751 CL |
16 | #include <string.h> |
17 | #include <unistd.h> | |
18 | #include <stdarg.h> | |
19 | #include <getopt.h> | |
20 | #include <regex.h> | |
a87615b8 | 21 | #include <errno.h> |
c09d8751 CL |
22 | |
23 | #define MAX_SLABS 500 | |
24 | #define MAX_ALIASES 500 | |
25 | #define MAX_NODES 1024 | |
26 | ||
27 | struct slabinfo { | |
28 | char *name; | |
29 | int alias; | |
30 | int refs; | |
31 | int aliases, align, cache_dma, cpu_slabs, destroy_by_rcu; | |
32 | int hwcache_align, object_size, objs_per_slab; | |
33 | int sanity_checks, slab_size, store_user, trace; | |
34 | int order, poison, reclaim_account, red_zone; | |
205ab99d | 35 | unsigned long partial, objects, slabs, objects_partial, objects_total; |
8ff12cfc CL |
36 | unsigned long alloc_fastpath, alloc_slowpath; |
37 | unsigned long free_fastpath, free_slowpath; | |
38 | unsigned long free_frozen, free_add_partial, free_remove_partial; | |
39 | unsigned long alloc_from_partial, alloc_slab, free_slab, alloc_refill; | |
40 | unsigned long cpuslab_flush, deactivate_full, deactivate_empty; | |
41 | unsigned long deactivate_to_head, deactivate_to_tail; | |
f715e6f1 | 42 | unsigned long deactivate_remote_frees, order_fallback; |
9da4714a CL |
43 | unsigned long cmpxchg_double_cpu_fail, cmpxchg_double_fail; |
44 | unsigned long alloc_node_mismatch, deactivate_bypass; | |
c09d8751 CL |
45 | int numa[MAX_NODES]; |
46 | int numa_partial[MAX_NODES]; | |
47 | } slabinfo[MAX_SLABS]; | |
48 | ||
49 | struct aliasinfo { | |
50 | char *name; | |
51 | char *ref; | |
52 | struct slabinfo *slab; | |
53 | } aliasinfo[MAX_ALIASES]; | |
54 | ||
55 | int slabs = 0; | |
a87615b8 | 56 | int actual_slabs = 0; |
c09d8751 CL |
57 | int aliases = 0; |
58 | int alias_targets = 0; | |
59 | int highest_node = 0; | |
60 | ||
61 | char buffer[4096]; | |
62 | ||
a87615b8 CL |
63 | int show_empty = 0; |
64 | int show_report = 0; | |
c09d8751 CL |
65 | int show_alias = 0; |
66 | int show_slab = 0; | |
67 | int skip_zero = 1; | |
68 | int show_numa = 0; | |
69 | int show_track = 0; | |
70 | int show_first_alias = 0; | |
71 | int validate = 0; | |
72 | int shrink = 0; | |
73 | int show_inverted = 0; | |
74 | int show_single_ref = 0; | |
75 | int show_totals = 0; | |
76 | int sort_size = 0; | |
8ff12cfc | 77 | int sort_active = 0; |
a87615b8 CL |
78 | int set_debug = 0; |
79 | int show_ops = 0; | |
8ff12cfc | 80 | int show_activity = 0; |
a87615b8 CL |
81 | |
82 | /* Debug options */ | |
83 | int sanity = 0; | |
84 | int redzone = 0; | |
85 | int poison = 0; | |
86 | int tracking = 0; | |
87 | int tracing = 0; | |
c09d8751 CL |
88 | |
89 | int page_size; | |
90 | ||
91 | regex_t pattern; | |
92 | ||
b7ed698c | 93 | static void fatal(const char *x, ...) |
c09d8751 CL |
94 | { |
95 | va_list ap; | |
96 | ||
97 | va_start(ap, x); | |
98 | vfprintf(stderr, x, ap); | |
99 | va_end(ap); | |
f32143a2 | 100 | exit(EXIT_FAILURE); |
c09d8751 CL |
101 | } |
102 | ||
b7ed698c | 103 | static void usage(void) |
c09d8751 | 104 | { |
9da4714a | 105 | printf("slabinfo 4/15/2011. (c) 2007 sgi/(c) 2011 Linux Foundation.\n\n" |
a87615b8 | 106 | "slabinfo [-ahnpvtsz] [-d debugopts] [slab-regexp]\n" |
c09d8751 | 107 | "-a|--aliases Show aliases\n" |
8ff12cfc | 108 | "-A|--activity Most active slabs first\n" |
a87615b8 | 109 | "-d<options>|--debug=<options> Set/Clear Debug options\n" |
8ff12cfc CL |
110 | "-D|--display-active Switch line format to activity\n" |
111 | "-e|--empty Show empty slabs\n" | |
a87615b8 | 112 | "-f|--first-alias Show first alias\n" |
c09d8751 | 113 | "-h|--help Show usage information\n" |
a87615b8 CL |
114 | "-i|--inverted Inverted list\n" |
115 | "-l|--slabs Show slabs\n" | |
c09d8751 | 116 | "-n|--numa Show NUMA information\n" |
a87615b8 | 117 | "-o|--ops Show kmem_cache_ops\n" |
c09d8751 | 118 | "-s|--shrink Shrink slabs\n" |
a87615b8 CL |
119 | "-r|--report Detailed report on single slabs\n" |
120 | "-S|--Size Sort by size\n" | |
c09d8751 CL |
121 | "-t|--tracking Show alloc/free information\n" |
122 | "-T|--Totals Show summary information\n" | |
a87615b8 | 123 | "-v|--validate Validate slabs\n" |
c09d8751 | 124 | "-z|--zero Include empty slabs\n" |
c09d8751 | 125 | "-1|--1ref Single reference\n" |
a87615b8 CL |
126 | "\nValid debug options (FZPUT may be combined)\n" |
127 | "a / A Switch on all debug options (=FZUP)\n" | |
128 | "- Switch off all debug options\n" | |
129 | "f / F Sanity Checks (SLAB_DEBUG_FREE)\n" | |
130 | "z / Z Redzoning\n" | |
131 | "p / P Poisoning\n" | |
132 | "u / U Tracking\n" | |
133 | "t / T Tracing\n" | |
c09d8751 CL |
134 | ); |
135 | } | |
136 | ||
b7ed698c | 137 | static unsigned long read_obj(const char *name) |
c09d8751 CL |
138 | { |
139 | FILE *f = fopen(name, "r"); | |
140 | ||
141 | if (!f) | |
142 | buffer[0] = 0; | |
143 | else { | |
f32143a2 | 144 | if (!fgets(buffer, sizeof(buffer), f)) |
c09d8751 CL |
145 | buffer[0] = 0; |
146 | fclose(f); | |
147 | if (buffer[strlen(buffer)] == '\n') | |
148 | buffer[strlen(buffer)] = 0; | |
149 | } | |
150 | return strlen(buffer); | |
151 | } | |
152 | ||
153 | ||
154 | /* | |
155 | * Get the contents of an attribute | |
156 | */ | |
b7ed698c | 157 | static unsigned long get_obj(const char *name) |
c09d8751 CL |
158 | { |
159 | if (!read_obj(name)) | |
160 | return 0; | |
161 | ||
162 | return atol(buffer); | |
163 | } | |
164 | ||
b7ed698c | 165 | static unsigned long get_obj_and_str(const char *name, char **x) |
c09d8751 CL |
166 | { |
167 | unsigned long result = 0; | |
168 | char *p; | |
169 | ||
170 | *x = NULL; | |
171 | ||
172 | if (!read_obj(name)) { | |
173 | x = NULL; | |
174 | return 0; | |
175 | } | |
176 | result = strtoul(buffer, &p, 10); | |
177 | while (*p == ' ') | |
178 | p++; | |
179 | if (*p) | |
180 | *x = strdup(p); | |
181 | return result; | |
182 | } | |
183 | ||
b7ed698c | 184 | static void set_obj(struct slabinfo *s, const char *name, int n) |
c09d8751 CL |
185 | { |
186 | char x[100]; | |
a87615b8 | 187 | FILE *f; |
c09d8751 | 188 | |
f32143a2 | 189 | snprintf(x, 100, "%s/%s", s->name, name); |
a87615b8 | 190 | f = fopen(x, "w"); |
c09d8751 CL |
191 | if (!f) |
192 | fatal("Cannot write to %s\n", x); | |
193 | ||
194 | fprintf(f, "%d\n", n); | |
195 | fclose(f); | |
196 | } | |
197 | ||
b7ed698c | 198 | static unsigned long read_slab_obj(struct slabinfo *s, const char *name) |
a87615b8 CL |
199 | { |
200 | char x[100]; | |
201 | FILE *f; | |
f32143a2 | 202 | size_t l; |
a87615b8 | 203 | |
f32143a2 | 204 | snprintf(x, 100, "%s/%s", s->name, name); |
a87615b8 CL |
205 | f = fopen(x, "r"); |
206 | if (!f) { | |
207 | buffer[0] = 0; | |
208 | l = 0; | |
209 | } else { | |
210 | l = fread(buffer, 1, sizeof(buffer), f); | |
211 | buffer[l] = 0; | |
212 | fclose(f); | |
213 | } | |
214 | return l; | |
215 | } | |
216 | ||
217 | ||
c09d8751 CL |
218 | /* |
219 | * Put a size string together | |
220 | */ | |
b7ed698c | 221 | static int store_size(char *buffer, unsigned long value) |
c09d8751 CL |
222 | { |
223 | unsigned long divisor = 1; | |
224 | char trailer = 0; | |
225 | int n; | |
226 | ||
227 | if (value > 1000000000UL) { | |
228 | divisor = 100000000UL; | |
229 | trailer = 'G'; | |
230 | } else if (value > 1000000UL) { | |
231 | divisor = 100000UL; | |
232 | trailer = 'M'; | |
233 | } else if (value > 1000UL) { | |
234 | divisor = 100; | |
235 | trailer = 'K'; | |
236 | } | |
237 | ||
238 | value /= divisor; | |
239 | n = sprintf(buffer, "%ld",value); | |
240 | if (trailer) { | |
241 | buffer[n] = trailer; | |
242 | n++; | |
243 | buffer[n] = 0; | |
244 | } | |
245 | if (divisor != 1) { | |
246 | memmove(buffer + n - 2, buffer + n - 3, 4); | |
247 | buffer[n-2] = '.'; | |
248 | n++; | |
249 | } | |
250 | return n; | |
251 | } | |
252 | ||
b7ed698c | 253 | static void decode_numa_list(int *numa, char *t) |
c09d8751 CL |
254 | { |
255 | int node; | |
256 | int nr; | |
257 | ||
258 | memset(numa, 0, MAX_NODES * sizeof(int)); | |
259 | ||
eefaca9c CL |
260 | if (!t) |
261 | return; | |
262 | ||
c09d8751 CL |
263 | while (*t == 'N') { |
264 | t++; | |
265 | node = strtoul(t, &t, 10); | |
266 | if (*t == '=') { | |
267 | t++; | |
268 | nr = strtoul(t, &t, 10); | |
269 | numa[node] = nr; | |
270 | if (node > highest_node) | |
271 | highest_node = node; | |
272 | } | |
273 | while (*t == ' ') | |
274 | t++; | |
275 | } | |
276 | } | |
277 | ||
b7ed698c | 278 | static void slab_validate(struct slabinfo *s) |
c09d8751 | 279 | { |
32f9306b CL |
280 | if (strcmp(s->name, "*") == 0) |
281 | return; | |
282 | ||
c09d8751 CL |
283 | set_obj(s, "validate", 1); |
284 | } | |
285 | ||
b7ed698c | 286 | static void slab_shrink(struct slabinfo *s) |
c09d8751 | 287 | { |
32f9306b CL |
288 | if (strcmp(s->name, "*") == 0) |
289 | return; | |
290 | ||
c09d8751 CL |
291 | set_obj(s, "shrink", 1); |
292 | } | |
293 | ||
294 | int line = 0; | |
295 | ||
b7ed698c | 296 | static void first_line(void) |
c09d8751 | 297 | { |
8ff12cfc | 298 | if (show_activity) |
9da4714a | 299 | printf("Name Objects Alloc Free %%Fast Fallb O CmpX UL\n"); |
8ff12cfc CL |
300 | else |
301 | printf("Name Objects Objsize Space " | |
302 | "Slabs/Part/Cpu O/S O %%Fr %%Ef Flg\n"); | |
c09d8751 CL |
303 | } |
304 | ||
305 | /* | |
306 | * Find the shortest alias of a slab | |
307 | */ | |
b7ed698c | 308 | static struct aliasinfo *find_one_alias(struct slabinfo *find) |
c09d8751 CL |
309 | { |
310 | struct aliasinfo *a; | |
311 | struct aliasinfo *best = NULL; | |
312 | ||
313 | for(a = aliasinfo;a < aliasinfo + aliases; a++) { | |
314 | if (a->slab == find && | |
315 | (!best || strlen(best->name) < strlen(a->name))) { | |
316 | best = a; | |
317 | if (strncmp(a->name,"kmall", 5) == 0) | |
318 | return best; | |
319 | } | |
320 | } | |
a87615b8 | 321 | return best; |
c09d8751 CL |
322 | } |
323 | ||
b7ed698c | 324 | static unsigned long slab_size(struct slabinfo *s) |
c09d8751 CL |
325 | { |
326 | return s->slabs * (page_size << s->order); | |
327 | } | |
328 | ||
b7ed698c | 329 | static unsigned long slab_activity(struct slabinfo *s) |
8ff12cfc CL |
330 | { |
331 | return s->alloc_fastpath + s->free_fastpath + | |
332 | s->alloc_slowpath + s->free_slowpath; | |
333 | } | |
334 | ||
b7ed698c | 335 | static void slab_numa(struct slabinfo *s, int mode) |
a87615b8 CL |
336 | { |
337 | int node; | |
338 | ||
339 | if (strcmp(s->name, "*") == 0) | |
340 | return; | |
341 | ||
342 | if (!highest_node) { | |
343 | printf("\n%s: No NUMA information available.\n", s->name); | |
344 | return; | |
345 | } | |
346 | ||
347 | if (skip_zero && !s->slabs) | |
348 | return; | |
349 | ||
350 | if (!line) { | |
351 | printf("\n%-21s:", mode ? "NUMA nodes" : "Slab"); | |
352 | for(node = 0; node <= highest_node; node++) | |
353 | printf(" %4d", node); | |
354 | printf("\n----------------------"); | |
355 | for(node = 0; node <= highest_node; node++) | |
356 | printf("-----"); | |
357 | printf("\n"); | |
358 | } | |
359 | printf("%-21s ", mode ? "All slabs" : s->name); | |
360 | for(node = 0; node <= highest_node; node++) { | |
361 | char b[20]; | |
362 | ||
363 | store_size(b, s->numa[node]); | |
364 | printf(" %4s", b); | |
365 | } | |
366 | printf("\n"); | |
367 | if (mode) { | |
368 | printf("%-21s ", "Partial slabs"); | |
369 | for(node = 0; node <= highest_node; node++) { | |
370 | char b[20]; | |
371 | ||
372 | store_size(b, s->numa_partial[node]); | |
373 | printf(" %4s", b); | |
374 | } | |
375 | printf("\n"); | |
376 | } | |
377 | line++; | |
378 | } | |
379 | ||
b7ed698c | 380 | static void show_tracking(struct slabinfo *s) |
a87615b8 CL |
381 | { |
382 | printf("\n%s: Kernel object allocation\n", s->name); | |
383 | printf("-----------------------------------------------------------------------\n"); | |
384 | if (read_slab_obj(s, "alloc_calls")) | |
9da4714a | 385 | printf("%s", buffer); |
a87615b8 CL |
386 | else |
387 | printf("No Data\n"); | |
388 | ||
389 | printf("\n%s: Kernel object freeing\n", s->name); | |
390 | printf("------------------------------------------------------------------------\n"); | |
391 | if (read_slab_obj(s, "free_calls")) | |
9da4714a | 392 | printf("%s", buffer); |
a87615b8 CL |
393 | else |
394 | printf("No Data\n"); | |
395 | ||
396 | } | |
397 | ||
b7ed698c | 398 | static void ops(struct slabinfo *s) |
a87615b8 CL |
399 | { |
400 | if (strcmp(s->name, "*") == 0) | |
401 | return; | |
402 | ||
403 | if (read_slab_obj(s, "ops")) { | |
404 | printf("\n%s: kmem_cache operations\n", s->name); | |
405 | printf("--------------------------------------------\n"); | |
9da4714a | 406 | printf("%s", buffer); |
a87615b8 CL |
407 | } else |
408 | printf("\n%s has no kmem_cache operations\n", s->name); | |
409 | } | |
410 | ||
b7ed698c | 411 | static const char *onoff(int x) |
a87615b8 CL |
412 | { |
413 | if (x) | |
414 | return "On "; | |
415 | return "Off"; | |
416 | } | |
417 | ||
b7ed698c | 418 | static void slab_stats(struct slabinfo *s) |
8ff12cfc CL |
419 | { |
420 | unsigned long total_alloc; | |
421 | unsigned long total_free; | |
422 | unsigned long total; | |
423 | ||
424 | if (!s->alloc_slab) | |
425 | return; | |
426 | ||
427 | total_alloc = s->alloc_fastpath + s->alloc_slowpath; | |
428 | total_free = s->free_fastpath + s->free_slowpath; | |
429 | ||
430 | if (!total_alloc) | |
431 | return; | |
432 | ||
433 | printf("\n"); | |
434 | printf("Slab Perf Counter Alloc Free %%Al %%Fr\n"); | |
435 | printf("--------------------------------------------------\n"); | |
436 | printf("Fastpath %8lu %8lu %3lu %3lu\n", | |
437 | s->alloc_fastpath, s->free_fastpath, | |
438 | s->alloc_fastpath * 100 / total_alloc, | |
439 | s->free_fastpath * 100 / total_free); | |
440 | printf("Slowpath %8lu %8lu %3lu %3lu\n", | |
441 | total_alloc - s->alloc_fastpath, s->free_slowpath, | |
442 | (total_alloc - s->alloc_fastpath) * 100 / total_alloc, | |
443 | s->free_slowpath * 100 / total_free); | |
444 | printf("Page Alloc %8lu %8lu %3lu %3lu\n", | |
445 | s->alloc_slab, s->free_slab, | |
446 | s->alloc_slab * 100 / total_alloc, | |
447 | s->free_slab * 100 / total_free); | |
448 | printf("Add partial %8lu %8lu %3lu %3lu\n", | |
449 | s->deactivate_to_head + s->deactivate_to_tail, | |
450 | s->free_add_partial, | |
451 | (s->deactivate_to_head + s->deactivate_to_tail) * 100 / total_alloc, | |
452 | s->free_add_partial * 100 / total_free); | |
453 | printf("Remove partial %8lu %8lu %3lu %3lu\n", | |
454 | s->alloc_from_partial, s->free_remove_partial, | |
455 | s->alloc_from_partial * 100 / total_alloc, | |
456 | s->free_remove_partial * 100 / total_free); | |
457 | ||
458 | printf("RemoteObj/SlabFrozen %8lu %8lu %3lu %3lu\n", | |
459 | s->deactivate_remote_frees, s->free_frozen, | |
460 | s->deactivate_remote_frees * 100 / total_alloc, | |
461 | s->free_frozen * 100 / total_free); | |
462 | ||
463 | printf("Total %8lu %8lu\n\n", total_alloc, total_free); | |
464 | ||
465 | if (s->cpuslab_flush) | |
466 | printf("Flushes %8lu\n", s->cpuslab_flush); | |
467 | ||
8ff12cfc | 468 | total = s->deactivate_full + s->deactivate_empty + |
9da4714a CL |
469 | s->deactivate_to_head + s->deactivate_to_tail + s->deactivate_bypass; |
470 | ||
471 | if (total) { | |
472 | printf("\nSlab Deactivation Ocurrences %%\n"); | |
473 | printf("-------------------------------------------------\n"); | |
474 | printf("Slab full %7lu %3lu%%\n", | |
475 | s->deactivate_full, (s->deactivate_full * 100) / total); | |
476 | printf("Slab empty %7lu %3lu%%\n", | |
477 | s->deactivate_empty, (s->deactivate_empty * 100) / total); | |
478 | printf("Moved to head of partial list %7lu %3lu%%\n", | |
479 | s->deactivate_to_head, (s->deactivate_to_head * 100) / total); | |
480 | printf("Moved to tail of partial list %7lu %3lu%%\n", | |
8ff12cfc | 481 | s->deactivate_to_tail, (s->deactivate_to_tail * 100) / total); |
9da4714a CL |
482 | printf("Deactivation bypass %7lu %3lu%%\n", |
483 | s->deactivate_bypass, (s->deactivate_bypass * 100) / total); | |
484 | printf("Refilled from foreign frees %7lu %3lu%%\n", | |
485 | s->alloc_refill, (s->alloc_refill * 100) / total); | |
486 | printf("Node mismatch %7lu %3lu%%\n", | |
487 | s->alloc_node_mismatch, (s->alloc_node_mismatch * 100) / total); | |
488 | } | |
489 | ||
490 | if (s->cmpxchg_double_fail || s->cmpxchg_double_cpu_fail) | |
491 | printf("\nCmpxchg_double Looping\n------------------------\n"); | |
492 | printf("Locked Cmpxchg Double redos %lu\nUnlocked Cmpxchg Double redos %lu\n", | |
493 | s->cmpxchg_double_fail, s->cmpxchg_double_cpu_fail); | |
8ff12cfc CL |
494 | } |
495 | ||
b7ed698c | 496 | static void report(struct slabinfo *s) |
a87615b8 CL |
497 | { |
498 | if (strcmp(s->name, "*") == 0) | |
499 | return; | |
eefaca9c | 500 | |
ac078602 | 501 | printf("\nSlabcache: %-20s Aliases: %2d Order : %2d Objects: %lu\n", |
eefaca9c | 502 | s->name, s->aliases, s->order, s->objects); |
a87615b8 CL |
503 | if (s->hwcache_align) |
504 | printf("** Hardware cacheline aligned\n"); | |
505 | if (s->cache_dma) | |
506 | printf("** Memory is allocated in a special DMA zone\n"); | |
507 | if (s->destroy_by_rcu) | |
508 | printf("** Slabs are destroyed via RCU\n"); | |
509 | if (s->reclaim_account) | |
510 | printf("** Reclaim accounting active\n"); | |
511 | ||
512 | printf("\nSizes (bytes) Slabs Debug Memory\n"); | |
513 | printf("------------------------------------------------------------------------\n"); | |
514 | printf("Object : %7d Total : %7ld Sanity Checks : %s Total: %7ld\n", | |
515 | s->object_size, s->slabs, onoff(s->sanity_checks), | |
516 | s->slabs * (page_size << s->order)); | |
517 | printf("SlabObj: %7d Full : %7ld Redzoning : %s Used : %7ld\n", | |
518 | s->slab_size, s->slabs - s->partial - s->cpu_slabs, | |
519 | onoff(s->red_zone), s->objects * s->object_size); | |
520 | printf("SlabSiz: %7d Partial: %7ld Poisoning : %s Loss : %7ld\n", | |
521 | page_size << s->order, s->partial, onoff(s->poison), | |
522 | s->slabs * (page_size << s->order) - s->objects * s->object_size); | |
523 | printf("Loss : %7d CpuSlab: %7d Tracking : %s Lalig: %7ld\n", | |
524 | s->slab_size - s->object_size, s->cpu_slabs, onoff(s->store_user), | |
525 | (s->slab_size - s->object_size) * s->objects); | |
526 | printf("Align : %7d Objects: %7d Tracing : %s Lpadd: %7ld\n", | |
527 | s->align, s->objs_per_slab, onoff(s->trace), | |
528 | ((page_size << s->order) - s->objs_per_slab * s->slab_size) * | |
529 | s->slabs); | |
530 | ||
531 | ops(s); | |
532 | show_tracking(s); | |
533 | slab_numa(s, 1); | |
8ff12cfc | 534 | slab_stats(s); |
a87615b8 | 535 | } |
c09d8751 | 536 | |
b7ed698c | 537 | static void slabcache(struct slabinfo *s) |
c09d8751 CL |
538 | { |
539 | char size_str[20]; | |
540 | char dist_str[40]; | |
541 | char flags[20]; | |
542 | char *p = flags; | |
543 | ||
a87615b8 CL |
544 | if (strcmp(s->name, "*") == 0) |
545 | return; | |
546 | ||
547 | if (actual_slabs == 1) { | |
548 | report(s); | |
549 | return; | |
550 | } | |
551 | ||
552 | if (skip_zero && !show_empty && !s->slabs) | |
553 | return; | |
554 | ||
555 | if (show_empty && s->slabs) | |
c09d8751 CL |
556 | return; |
557 | ||
558 | store_size(size_str, slab_size(s)); | |
205ab99d CL |
559 | snprintf(dist_str, 40, "%lu/%lu/%d", s->slabs - s->cpu_slabs, |
560 | s->partial, s->cpu_slabs); | |
c09d8751 CL |
561 | |
562 | if (!line++) | |
563 | first_line(); | |
564 | ||
565 | if (s->aliases) | |
566 | *p++ = '*'; | |
567 | if (s->cache_dma) | |
568 | *p++ = 'd'; | |
569 | if (s->hwcache_align) | |
570 | *p++ = 'A'; | |
571 | if (s->poison) | |
572 | *p++ = 'P'; | |
573 | if (s->reclaim_account) | |
574 | *p++ = 'a'; | |
575 | if (s->red_zone) | |
576 | *p++ = 'Z'; | |
577 | if (s->sanity_checks) | |
578 | *p++ = 'F'; | |
579 | if (s->store_user) | |
580 | *p++ = 'U'; | |
581 | if (s->trace) | |
582 | *p++ = 'T'; | |
583 | ||
584 | *p = 0; | |
8ff12cfc CL |
585 | if (show_activity) { |
586 | unsigned long total_alloc; | |
587 | unsigned long total_free; | |
588 | ||
589 | total_alloc = s->alloc_fastpath + s->alloc_slowpath; | |
590 | total_free = s->free_fastpath + s->free_slowpath; | |
591 | ||
9da4714a | 592 | printf("%-21s %8ld %10ld %10ld %3ld %3ld %5ld %1d %4ld %4ld\n", |
8ff12cfc CL |
593 | s->name, s->objects, |
594 | total_alloc, total_free, | |
595 | total_alloc ? (s->alloc_fastpath * 100 / total_alloc) : 0, | |
f715e6f1 | 596 | total_free ? (s->free_fastpath * 100 / total_free) : 0, |
9da4714a CL |
597 | s->order_fallback, s->order, s->cmpxchg_double_fail, |
598 | s->cmpxchg_double_cpu_fail); | |
8ff12cfc CL |
599 | } |
600 | else | |
601 | printf("%-21s %8ld %7d %8s %14s %4d %1d %3ld %3ld %s\n", | |
602 | s->name, s->objects, s->object_size, size_str, dist_str, | |
603 | s->objs_per_slab, s->order, | |
604 | s->slabs ? (s->partial * 100) / s->slabs : 100, | |
605 | s->slabs ? (s->objects * s->object_size * 100) / | |
606 | (s->slabs * (page_size << s->order)) : 100, | |
607 | flags); | |
c09d8751 CL |
608 | } |
609 | ||
a87615b8 CL |
610 | /* |
611 | * Analyze debug options. Return false if something is amiss. | |
612 | */ | |
b7ed698c | 613 | static int debug_opt_scan(char *opt) |
c09d8751 | 614 | { |
a87615b8 CL |
615 | if (!opt || !opt[0] || strcmp(opt, "-") == 0) |
616 | return 1; | |
617 | ||
618 | if (strcasecmp(opt, "a") == 0) { | |
619 | sanity = 1; | |
620 | poison = 1; | |
621 | redzone = 1; | |
622 | tracking = 1; | |
623 | return 1; | |
624 | } | |
c09d8751 | 625 | |
a87615b8 | 626 | for ( ; *opt; opt++) |
0d24db33 | 627 | switch (*opt) { |
a87615b8 CL |
628 | case 'F' : case 'f': |
629 | if (sanity) | |
630 | return 0; | |
631 | sanity = 1; | |
632 | break; | |
633 | case 'P' : case 'p': | |
634 | if (poison) | |
635 | return 0; | |
636 | poison = 1; | |
637 | break; | |
c09d8751 | 638 | |
a87615b8 CL |
639 | case 'Z' : case 'z': |
640 | if (redzone) | |
641 | return 0; | |
642 | redzone = 1; | |
643 | break; | |
c09d8751 | 644 | |
a87615b8 CL |
645 | case 'U' : case 'u': |
646 | if (tracking) | |
647 | return 0; | |
648 | tracking = 1; | |
649 | break; | |
c09d8751 | 650 | |
a87615b8 CL |
651 | case 'T' : case 't': |
652 | if (tracing) | |
653 | return 0; | |
654 | tracing = 1; | |
655 | break; | |
656 | default: | |
657 | return 0; | |
658 | } | |
659 | return 1; | |
c09d8751 CL |
660 | } |
661 | ||
b7ed698c | 662 | static int slab_empty(struct slabinfo *s) |
c09d8751 | 663 | { |
a87615b8 CL |
664 | if (s->objects > 0) |
665 | return 0; | |
c09d8751 | 666 | |
a87615b8 CL |
667 | /* |
668 | * We may still have slabs even if there are no objects. Shrinking will | |
669 | * remove them. | |
670 | */ | |
671 | if (s->slabs != 0) | |
672 | set_obj(s, "shrink", 1); | |
c09d8751 | 673 | |
a87615b8 CL |
674 | return 1; |
675 | } | |
676 | ||
b7ed698c | 677 | static void slab_debug(struct slabinfo *s) |
a87615b8 | 678 | { |
32f9306b CL |
679 | if (strcmp(s->name, "*") == 0) |
680 | return; | |
681 | ||
a87615b8 CL |
682 | if (sanity && !s->sanity_checks) { |
683 | set_obj(s, "sanity", 1); | |
684 | } | |
685 | if (!sanity && s->sanity_checks) { | |
686 | if (slab_empty(s)) | |
687 | set_obj(s, "sanity", 0); | |
688 | else | |
689 | fprintf(stderr, "%s not empty cannot disable sanity checks\n", s->name); | |
690 | } | |
691 | if (redzone && !s->red_zone) { | |
692 | if (slab_empty(s)) | |
693 | set_obj(s, "red_zone", 1); | |
694 | else | |
695 | fprintf(stderr, "%s not empty cannot enable redzoning\n", s->name); | |
696 | } | |
697 | if (!redzone && s->red_zone) { | |
698 | if (slab_empty(s)) | |
699 | set_obj(s, "red_zone", 0); | |
700 | else | |
701 | fprintf(stderr, "%s not empty cannot disable redzoning\n", s->name); | |
702 | } | |
703 | if (poison && !s->poison) { | |
704 | if (slab_empty(s)) | |
705 | set_obj(s, "poison", 1); | |
706 | else | |
707 | fprintf(stderr, "%s not empty cannot enable poisoning\n", s->name); | |
708 | } | |
709 | if (!poison && s->poison) { | |
710 | if (slab_empty(s)) | |
711 | set_obj(s, "poison", 0); | |
712 | else | |
713 | fprintf(stderr, "%s not empty cannot disable poisoning\n", s->name); | |
714 | } | |
715 | if (tracking && !s->store_user) { | |
716 | if (slab_empty(s)) | |
717 | set_obj(s, "store_user", 1); | |
718 | else | |
719 | fprintf(stderr, "%s not empty cannot enable tracking\n", s->name); | |
720 | } | |
721 | if (!tracking && s->store_user) { | |
722 | if (slab_empty(s)) | |
723 | set_obj(s, "store_user", 0); | |
724 | else | |
725 | fprintf(stderr, "%s not empty cannot disable tracking\n", s->name); | |
726 | } | |
727 | if (tracing && !s->trace) { | |
728 | if (slabs == 1) | |
729 | set_obj(s, "trace", 1); | |
730 | else | |
731 | fprintf(stderr, "%s can only enable trace for one slab at a time\n", s->name); | |
732 | } | |
733 | if (!tracing && s->trace) | |
734 | set_obj(s, "trace", 1); | |
c09d8751 CL |
735 | } |
736 | ||
b7ed698c | 737 | static void totals(void) |
c09d8751 CL |
738 | { |
739 | struct slabinfo *s; | |
740 | ||
741 | int used_slabs = 0; | |
742 | char b1[20], b2[20], b3[20], b4[20]; | |
743 | unsigned long long max = 1ULL << 63; | |
744 | ||
745 | /* Object size */ | |
746 | unsigned long long min_objsize = max, max_objsize = 0, avg_objsize; | |
747 | ||
748 | /* Number of partial slabs in a slabcache */ | |
749 | unsigned long long min_partial = max, max_partial = 0, | |
750 | avg_partial, total_partial = 0; | |
751 | ||
752 | /* Number of slabs in a slab cache */ | |
753 | unsigned long long min_slabs = max, max_slabs = 0, | |
754 | avg_slabs, total_slabs = 0; | |
755 | ||
756 | /* Size of the whole slab */ | |
757 | unsigned long long min_size = max, max_size = 0, | |
758 | avg_size, total_size = 0; | |
759 | ||
760 | /* Bytes used for object storage in a slab */ | |
761 | unsigned long long min_used = max, max_used = 0, | |
762 | avg_used, total_used = 0; | |
763 | ||
764 | /* Waste: Bytes used for alignment and padding */ | |
765 | unsigned long long min_waste = max, max_waste = 0, | |
766 | avg_waste, total_waste = 0; | |
767 | /* Number of objects in a slab */ | |
768 | unsigned long long min_objects = max, max_objects = 0, | |
769 | avg_objects, total_objects = 0; | |
770 | /* Waste per object */ | |
771 | unsigned long long min_objwaste = max, | |
772 | max_objwaste = 0, avg_objwaste, | |
773 | total_objwaste = 0; | |
774 | ||
775 | /* Memory per object */ | |
776 | unsigned long long min_memobj = max, | |
777 | max_memobj = 0, avg_memobj, | |
778 | total_objsize = 0; | |
779 | ||
780 | /* Percentage of partial slabs per slab */ | |
781 | unsigned long min_ppart = 100, max_ppart = 0, | |
782 | avg_ppart, total_ppart = 0; | |
783 | ||
784 | /* Number of objects in partial slabs */ | |
785 | unsigned long min_partobj = max, max_partobj = 0, | |
786 | avg_partobj, total_partobj = 0; | |
787 | ||
788 | /* Percentage of partial objects of all objects in a slab */ | |
789 | unsigned long min_ppartobj = 100, max_ppartobj = 0, | |
790 | avg_ppartobj, total_ppartobj = 0; | |
791 | ||
792 | ||
793 | for (s = slabinfo; s < slabinfo + slabs; s++) { | |
794 | unsigned long long size; | |
795 | unsigned long used; | |
796 | unsigned long long wasted; | |
797 | unsigned long long objwaste; | |
c09d8751 CL |
798 | unsigned long percentage_partial_slabs; |
799 | unsigned long percentage_partial_objs; | |
800 | ||
801 | if (!s->slabs || !s->objects) | |
802 | continue; | |
803 | ||
804 | used_slabs++; | |
805 | ||
806 | size = slab_size(s); | |
807 | used = s->objects * s->object_size; | |
808 | wasted = size - used; | |
809 | objwaste = s->slab_size - s->object_size; | |
810 | ||
c09d8751 CL |
811 | percentage_partial_slabs = s->partial * 100 / s->slabs; |
812 | if (percentage_partial_slabs > 100) | |
813 | percentage_partial_slabs = 100; | |
814 | ||
205ab99d | 815 | percentage_partial_objs = s->objects_partial * 100 |
c09d8751 CL |
816 | / s->objects; |
817 | ||
818 | if (percentage_partial_objs > 100) | |
819 | percentage_partial_objs = 100; | |
820 | ||
821 | if (s->object_size < min_objsize) | |
822 | min_objsize = s->object_size; | |
823 | if (s->partial < min_partial) | |
824 | min_partial = s->partial; | |
825 | if (s->slabs < min_slabs) | |
826 | min_slabs = s->slabs; | |
827 | if (size < min_size) | |
828 | min_size = size; | |
829 | if (wasted < min_waste) | |
830 | min_waste = wasted; | |
831 | if (objwaste < min_objwaste) | |
832 | min_objwaste = objwaste; | |
833 | if (s->objects < min_objects) | |
834 | min_objects = s->objects; | |
835 | if (used < min_used) | |
836 | min_used = used; | |
205ab99d CL |
837 | if (s->objects_partial < min_partobj) |
838 | min_partobj = s->objects_partial; | |
c09d8751 CL |
839 | if (percentage_partial_slabs < min_ppart) |
840 | min_ppart = percentage_partial_slabs; | |
841 | if (percentage_partial_objs < min_ppartobj) | |
842 | min_ppartobj = percentage_partial_objs; | |
843 | if (s->slab_size < min_memobj) | |
844 | min_memobj = s->slab_size; | |
845 | ||
846 | if (s->object_size > max_objsize) | |
847 | max_objsize = s->object_size; | |
848 | if (s->partial > max_partial) | |
849 | max_partial = s->partial; | |
850 | if (s->slabs > max_slabs) | |
851 | max_slabs = s->slabs; | |
852 | if (size > max_size) | |
853 | max_size = size; | |
854 | if (wasted > max_waste) | |
855 | max_waste = wasted; | |
856 | if (objwaste > max_objwaste) | |
857 | max_objwaste = objwaste; | |
858 | if (s->objects > max_objects) | |
859 | max_objects = s->objects; | |
860 | if (used > max_used) | |
861 | max_used = used; | |
205ab99d CL |
862 | if (s->objects_partial > max_partobj) |
863 | max_partobj = s->objects_partial; | |
c09d8751 CL |
864 | if (percentage_partial_slabs > max_ppart) |
865 | max_ppart = percentage_partial_slabs; | |
866 | if (percentage_partial_objs > max_ppartobj) | |
867 | max_ppartobj = percentage_partial_objs; | |
868 | if (s->slab_size > max_memobj) | |
869 | max_memobj = s->slab_size; | |
870 | ||
871 | total_partial += s->partial; | |
872 | total_slabs += s->slabs; | |
873 | total_size += size; | |
874 | total_waste += wasted; | |
875 | ||
876 | total_objects += s->objects; | |
877 | total_used += used; | |
205ab99d | 878 | total_partobj += s->objects_partial; |
c09d8751 CL |
879 | total_ppart += percentage_partial_slabs; |
880 | total_ppartobj += percentage_partial_objs; | |
881 | ||
882 | total_objwaste += s->objects * objwaste; | |
883 | total_objsize += s->objects * s->slab_size; | |
884 | } | |
885 | ||
886 | if (!total_objects) { | |
887 | printf("No objects\n"); | |
888 | return; | |
889 | } | |
890 | if (!used_slabs) { | |
891 | printf("No slabs\n"); | |
892 | return; | |
893 | } | |
894 | ||
895 | /* Per slab averages */ | |
896 | avg_partial = total_partial / used_slabs; | |
897 | avg_slabs = total_slabs / used_slabs; | |
898 | avg_size = total_size / used_slabs; | |
899 | avg_waste = total_waste / used_slabs; | |
900 | ||
901 | avg_objects = total_objects / used_slabs; | |
902 | avg_used = total_used / used_slabs; | |
903 | avg_partobj = total_partobj / used_slabs; | |
904 | avg_ppart = total_ppart / used_slabs; | |
905 | avg_ppartobj = total_ppartobj / used_slabs; | |
906 | ||
907 | /* Per object object sizes */ | |
908 | avg_objsize = total_used / total_objects; | |
909 | avg_objwaste = total_objwaste / total_objects; | |
910 | avg_partobj = total_partobj * 100 / total_objects; | |
911 | avg_memobj = total_objsize / total_objects; | |
912 | ||
913 | printf("Slabcache Totals\n"); | |
914 | printf("----------------\n"); | |
915 | printf("Slabcaches : %3d Aliases : %3d->%-3d Active: %3d\n", | |
916 | slabs, aliases, alias_targets, used_slabs); | |
917 | ||
918 | store_size(b1, total_size);store_size(b2, total_waste); | |
919 | store_size(b3, total_waste * 100 / total_used); | |
eefaca9c | 920 | printf("Memory used: %6s # Loss : %6s MRatio:%6s%%\n", b1, b2, b3); |
c09d8751 CL |
921 | |
922 | store_size(b1, total_objects);store_size(b2, total_partobj); | |
923 | store_size(b3, total_partobj * 100 / total_objects); | |
eefaca9c | 924 | printf("# Objects : %6s # PartObj: %6s ORatio:%6s%%\n", b1, b2, b3); |
c09d8751 CL |
925 | |
926 | printf("\n"); | |
927 | printf("Per Cache Average Min Max Total\n"); | |
928 | printf("---------------------------------------------------------\n"); | |
929 | ||
930 | store_size(b1, avg_objects);store_size(b2, min_objects); | |
931 | store_size(b3, max_objects);store_size(b4, total_objects); | |
932 | printf("#Objects %10s %10s %10s %10s\n", | |
933 | b1, b2, b3, b4); | |
934 | ||
935 | store_size(b1, avg_slabs);store_size(b2, min_slabs); | |
936 | store_size(b3, max_slabs);store_size(b4, total_slabs); | |
937 | printf("#Slabs %10s %10s %10s %10s\n", | |
938 | b1, b2, b3, b4); | |
939 | ||
940 | store_size(b1, avg_partial);store_size(b2, min_partial); | |
941 | store_size(b3, max_partial);store_size(b4, total_partial); | |
942 | printf("#PartSlab %10s %10s %10s %10s\n", | |
943 | b1, b2, b3, b4); | |
944 | store_size(b1, avg_ppart);store_size(b2, min_ppart); | |
945 | store_size(b3, max_ppart); | |
946 | store_size(b4, total_partial * 100 / total_slabs); | |
eefaca9c | 947 | printf("%%PartSlab%10s%% %10s%% %10s%% %10s%%\n", |
c09d8751 CL |
948 | b1, b2, b3, b4); |
949 | ||
950 | store_size(b1, avg_partobj);store_size(b2, min_partobj); | |
951 | store_size(b3, max_partobj); | |
952 | store_size(b4, total_partobj); | |
953 | printf("PartObjs %10s %10s %10s %10s\n", | |
954 | b1, b2, b3, b4); | |
955 | ||
956 | store_size(b1, avg_ppartobj);store_size(b2, min_ppartobj); | |
957 | store_size(b3, max_ppartobj); | |
958 | store_size(b4, total_partobj * 100 / total_objects); | |
eefaca9c | 959 | printf("%% PartObj%10s%% %10s%% %10s%% %10s%%\n", |
c09d8751 CL |
960 | b1, b2, b3, b4); |
961 | ||
962 | store_size(b1, avg_size);store_size(b2, min_size); | |
963 | store_size(b3, max_size);store_size(b4, total_size); | |
964 | printf("Memory %10s %10s %10s %10s\n", | |
965 | b1, b2, b3, b4); | |
966 | ||
967 | store_size(b1, avg_used);store_size(b2, min_used); | |
968 | store_size(b3, max_used);store_size(b4, total_used); | |
969 | printf("Used %10s %10s %10s %10s\n", | |
970 | b1, b2, b3, b4); | |
971 | ||
972 | store_size(b1, avg_waste);store_size(b2, min_waste); | |
973 | store_size(b3, max_waste);store_size(b4, total_waste); | |
974 | printf("Loss %10s %10s %10s %10s\n", | |
975 | b1, b2, b3, b4); | |
976 | ||
977 | printf("\n"); | |
978 | printf("Per Object Average Min Max\n"); | |
979 | printf("---------------------------------------------\n"); | |
980 | ||
981 | store_size(b1, avg_memobj);store_size(b2, min_memobj); | |
982 | store_size(b3, max_memobj); | |
983 | printf("Memory %10s %10s %10s\n", | |
984 | b1, b2, b3); | |
985 | store_size(b1, avg_objsize);store_size(b2, min_objsize); | |
986 | store_size(b3, max_objsize); | |
987 | printf("User %10s %10s %10s\n", | |
988 | b1, b2, b3); | |
989 | ||
990 | store_size(b1, avg_objwaste);store_size(b2, min_objwaste); | |
991 | store_size(b3, max_objwaste); | |
992 | printf("Loss %10s %10s %10s\n", | |
993 | b1, b2, b3); | |
994 | } | |
995 | ||
b7ed698c | 996 | static void sort_slabs(void) |
c09d8751 CL |
997 | { |
998 | struct slabinfo *s1,*s2; | |
999 | ||
1000 | for (s1 = slabinfo; s1 < slabinfo + slabs; s1++) { | |
1001 | for (s2 = s1 + 1; s2 < slabinfo + slabs; s2++) { | |
1002 | int result; | |
1003 | ||
1004 | if (sort_size) | |
1005 | result = slab_size(s1) < slab_size(s2); | |
8ff12cfc CL |
1006 | else if (sort_active) |
1007 | result = slab_activity(s1) < slab_activity(s2); | |
c09d8751 CL |
1008 | else |
1009 | result = strcasecmp(s1->name, s2->name); | |
1010 | ||
1011 | if (show_inverted) | |
1012 | result = -result; | |
1013 | ||
1014 | if (result > 0) { | |
1015 | struct slabinfo t; | |
1016 | ||
1017 | memcpy(&t, s1, sizeof(struct slabinfo)); | |
1018 | memcpy(s1, s2, sizeof(struct slabinfo)); | |
1019 | memcpy(s2, &t, sizeof(struct slabinfo)); | |
1020 | } | |
1021 | } | |
1022 | } | |
1023 | } | |
1024 | ||
b7ed698c | 1025 | static void sort_aliases(void) |
c09d8751 CL |
1026 | { |
1027 | struct aliasinfo *a1,*a2; | |
1028 | ||
1029 | for (a1 = aliasinfo; a1 < aliasinfo + aliases; a1++) { | |
1030 | for (a2 = a1 + 1; a2 < aliasinfo + aliases; a2++) { | |
1031 | char *n1, *n2; | |
1032 | ||
1033 | n1 = a1->name; | |
1034 | n2 = a2->name; | |
1035 | if (show_alias && !show_inverted) { | |
1036 | n1 = a1->ref; | |
1037 | n2 = a2->ref; | |
1038 | } | |
1039 | if (strcasecmp(n1, n2) > 0) { | |
1040 | struct aliasinfo t; | |
1041 | ||
1042 | memcpy(&t, a1, sizeof(struct aliasinfo)); | |
1043 | memcpy(a1, a2, sizeof(struct aliasinfo)); | |
1044 | memcpy(a2, &t, sizeof(struct aliasinfo)); | |
1045 | } | |
1046 | } | |
1047 | } | |
1048 | } | |
1049 | ||
b7ed698c | 1050 | static void link_slabs(void) |
c09d8751 CL |
1051 | { |
1052 | struct aliasinfo *a; | |
1053 | struct slabinfo *s; | |
1054 | ||
1055 | for (a = aliasinfo; a < aliasinfo + aliases; a++) { | |
1056 | ||
a87615b8 | 1057 | for (s = slabinfo; s < slabinfo + slabs; s++) |
c09d8751 CL |
1058 | if (strcmp(a->ref, s->name) == 0) { |
1059 | a->slab = s; | |
1060 | s->refs++; | |
1061 | break; | |
1062 | } | |
1063 | if (s == slabinfo + slabs) | |
1064 | fatal("Unresolved alias %s\n", a->ref); | |
1065 | } | |
1066 | } | |
1067 | ||
b7ed698c | 1068 | static void alias(void) |
c09d8751 CL |
1069 | { |
1070 | struct aliasinfo *a; | |
1071 | char *active = NULL; | |
1072 | ||
1073 | sort_aliases(); | |
1074 | link_slabs(); | |
1075 | ||
1076 | for(a = aliasinfo; a < aliasinfo + aliases; a++) { | |
1077 | ||
1078 | if (!show_single_ref && a->slab->refs == 1) | |
1079 | continue; | |
1080 | ||
1081 | if (!show_inverted) { | |
1082 | if (active) { | |
1083 | if (strcmp(a->slab->name, active) == 0) { | |
1084 | printf(" %s", a->name); | |
1085 | continue; | |
1086 | } | |
1087 | } | |
a87615b8 | 1088 | printf("\n%-12s <- %s", a->slab->name, a->name); |
c09d8751 CL |
1089 | active = a->slab->name; |
1090 | } | |
1091 | else | |
1092 | printf("%-20s -> %s\n", a->name, a->slab->name); | |
1093 | } | |
1094 | if (active) | |
1095 | printf("\n"); | |
1096 | } | |
1097 | ||
1098 | ||
b7ed698c | 1099 | static void rename_slabs(void) |
c09d8751 CL |
1100 | { |
1101 | struct slabinfo *s; | |
1102 | struct aliasinfo *a; | |
1103 | ||
1104 | for (s = slabinfo; s < slabinfo + slabs; s++) { | |
1105 | if (*s->name != ':') | |
1106 | continue; | |
1107 | ||
1108 | if (s->refs > 1 && !show_first_alias) | |
1109 | continue; | |
1110 | ||
1111 | a = find_one_alias(s); | |
1112 | ||
a87615b8 CL |
1113 | if (a) |
1114 | s->name = a->name; | |
1115 | else { | |
1116 | s->name = "*"; | |
1117 | actual_slabs--; | |
1118 | } | |
c09d8751 CL |
1119 | } |
1120 | } | |
1121 | ||
b7ed698c | 1122 | static int slab_mismatch(char *slab) |
c09d8751 CL |
1123 | { |
1124 | return regexec(&pattern, slab, 0, NULL, 0); | |
1125 | } | |
1126 | ||
b7ed698c | 1127 | static void read_slab_dir(void) |
c09d8751 CL |
1128 | { |
1129 | DIR *dir; | |
1130 | struct dirent *de; | |
1131 | struct slabinfo *slab = slabinfo; | |
1132 | struct aliasinfo *alias = aliasinfo; | |
1133 | char *p; | |
1134 | char *t; | |
1135 | int count; | |
1136 | ||
b6c24de7 | 1137 | if (chdir("/sys/kernel/slab") && chdir("/sys/slab")) |
a87615b8 CL |
1138 | fatal("SYSFS support for SLUB not active\n"); |
1139 | ||
c09d8751 CL |
1140 | dir = opendir("."); |
1141 | while ((de = readdir(dir))) { | |
1142 | if (de->d_name[0] == '.' || | |
a87615b8 CL |
1143 | (de->d_name[0] != ':' && slab_mismatch(de->d_name))) |
1144 | continue; | |
c09d8751 CL |
1145 | switch (de->d_type) { |
1146 | case DT_LNK: | |
0d24db33 | 1147 | alias->name = strdup(de->d_name); |
c09d8751 CL |
1148 | count = readlink(de->d_name, buffer, sizeof(buffer)); |
1149 | ||
1150 | if (count < 0) | |
1151 | fatal("Cannot read symlink %s\n", de->d_name); | |
1152 | ||
1153 | buffer[count] = 0; | |
1154 | p = buffer + count; | |
1155 | while (p > buffer && p[-1] != '/') | |
1156 | p--; | |
1157 | alias->ref = strdup(p); | |
1158 | alias++; | |
1159 | break; | |
1160 | case DT_DIR: | |
1161 | if (chdir(de->d_name)) | |
1162 | fatal("Unable to access slab %s\n", slab->name); | |
0d24db33 | 1163 | slab->name = strdup(de->d_name); |
c09d8751 CL |
1164 | slab->alias = 0; |
1165 | slab->refs = 0; | |
1166 | slab->aliases = get_obj("aliases"); | |
1167 | slab->align = get_obj("align"); | |
1168 | slab->cache_dma = get_obj("cache_dma"); | |
1169 | slab->cpu_slabs = get_obj("cpu_slabs"); | |
1170 | slab->destroy_by_rcu = get_obj("destroy_by_rcu"); | |
1171 | slab->hwcache_align = get_obj("hwcache_align"); | |
1172 | slab->object_size = get_obj("object_size"); | |
1173 | slab->objects = get_obj("objects"); | |
205ab99d CL |
1174 | slab->objects_partial = get_obj("objects_partial"); |
1175 | slab->objects_total = get_obj("objects_total"); | |
c09d8751 CL |
1176 | slab->objs_per_slab = get_obj("objs_per_slab"); |
1177 | slab->order = get_obj("order"); | |
1178 | slab->partial = get_obj("partial"); | |
1179 | slab->partial = get_obj_and_str("partial", &t); | |
1180 | decode_numa_list(slab->numa_partial, t); | |
f32143a2 | 1181 | free(t); |
c09d8751 CL |
1182 | slab->poison = get_obj("poison"); |
1183 | slab->reclaim_account = get_obj("reclaim_account"); | |
1184 | slab->red_zone = get_obj("red_zone"); | |
1185 | slab->sanity_checks = get_obj("sanity_checks"); | |
1186 | slab->slab_size = get_obj("slab_size"); | |
1187 | slab->slabs = get_obj_and_str("slabs", &t); | |
1188 | decode_numa_list(slab->numa, t); | |
f32143a2 | 1189 | free(t); |
c09d8751 CL |
1190 | slab->store_user = get_obj("store_user"); |
1191 | slab->trace = get_obj("trace"); | |
8ff12cfc CL |
1192 | slab->alloc_fastpath = get_obj("alloc_fastpath"); |
1193 | slab->alloc_slowpath = get_obj("alloc_slowpath"); | |
1194 | slab->free_fastpath = get_obj("free_fastpath"); | |
1195 | slab->free_slowpath = get_obj("free_slowpath"); | |
1196 | slab->free_frozen= get_obj("free_frozen"); | |
1197 | slab->free_add_partial = get_obj("free_add_partial"); | |
1198 | slab->free_remove_partial = get_obj("free_remove_partial"); | |
1199 | slab->alloc_from_partial = get_obj("alloc_from_partial"); | |
1200 | slab->alloc_slab = get_obj("alloc_slab"); | |
1201 | slab->alloc_refill = get_obj("alloc_refill"); | |
1202 | slab->free_slab = get_obj("free_slab"); | |
1203 | slab->cpuslab_flush = get_obj("cpuslab_flush"); | |
1204 | slab->deactivate_full = get_obj("deactivate_full"); | |
1205 | slab->deactivate_empty = get_obj("deactivate_empty"); | |
1206 | slab->deactivate_to_head = get_obj("deactivate_to_head"); | |
1207 | slab->deactivate_to_tail = get_obj("deactivate_to_tail"); | |
1208 | slab->deactivate_remote_frees = get_obj("deactivate_remote_frees"); | |
f715e6f1 | 1209 | slab->order_fallback = get_obj("order_fallback"); |
9da4714a CL |
1210 | slab->cmpxchg_double_cpu_fail = get_obj("cmpxchg_double_cpu_fail"); |
1211 | slab->cmpxchg_double_fail = get_obj("cmpxchg_double_fail"); | |
1212 | slab->alloc_node_mismatch = get_obj("alloc_node_mismatch"); | |
1213 | slab->deactivate_bypass = get_obj("deactivate_bypass"); | |
c09d8751 CL |
1214 | chdir(".."); |
1215 | if (slab->name[0] == ':') | |
1216 | alias_targets++; | |
1217 | slab++; | |
1218 | break; | |
1219 | default : | |
1220 | fatal("Unknown file type %lx\n", de->d_type); | |
1221 | } | |
1222 | } | |
1223 | closedir(dir); | |
1224 | slabs = slab - slabinfo; | |
a87615b8 | 1225 | actual_slabs = slabs; |
c09d8751 CL |
1226 | aliases = alias - aliasinfo; |
1227 | if (slabs > MAX_SLABS) | |
1228 | fatal("Too many slabs\n"); | |
1229 | if (aliases > MAX_ALIASES) | |
1230 | fatal("Too many aliases\n"); | |
1231 | } | |
1232 | ||
b7ed698c | 1233 | static void output_slabs(void) |
c09d8751 CL |
1234 | { |
1235 | struct slabinfo *slab; | |
1236 | ||
1237 | for (slab = slabinfo; slab < slabinfo + slabs; slab++) { | |
1238 | ||
1239 | if (slab->alias) | |
1240 | continue; | |
1241 | ||
1242 | ||
1243 | if (show_numa) | |
a87615b8 CL |
1244 | slab_numa(slab, 0); |
1245 | else if (show_track) | |
c09d8751 | 1246 | show_tracking(slab); |
a87615b8 | 1247 | else if (validate) |
c09d8751 | 1248 | slab_validate(slab); |
a87615b8 | 1249 | else if (shrink) |
c09d8751 | 1250 | slab_shrink(slab); |
a87615b8 CL |
1251 | else if (set_debug) |
1252 | slab_debug(slab); | |
1253 | else if (show_ops) | |
1254 | ops(slab); | |
1255 | else if (show_slab) | |
1256 | slabcache(slab); | |
eefaca9c CL |
1257 | else if (show_report) |
1258 | report(slab); | |
c09d8751 CL |
1259 | } |
1260 | } | |
1261 | ||
1262 | struct option opts[] = { | |
1263 | { "aliases", 0, NULL, 'a' }, | |
8ff12cfc | 1264 | { "activity", 0, NULL, 'A' }, |
a87615b8 | 1265 | { "debug", 2, NULL, 'd' }, |
8ff12cfc | 1266 | { "display-activity", 0, NULL, 'D' }, |
a87615b8 | 1267 | { "empty", 0, NULL, 'e' }, |
c09d8751 | 1268 | { "first-alias", 0, NULL, 'f' }, |
a87615b8 CL |
1269 | { "help", 0, NULL, 'h' }, |
1270 | { "inverted", 0, NULL, 'i'}, | |
1271 | { "numa", 0, NULL, 'n' }, | |
1272 | { "ops", 0, NULL, 'o' }, | |
1273 | { "report", 0, NULL, 'r' }, | |
c09d8751 | 1274 | { "shrink", 0, NULL, 's' }, |
a87615b8 | 1275 | { "slabs", 0, NULL, 'l' }, |
c09d8751 | 1276 | { "track", 0, NULL, 't'}, |
a87615b8 CL |
1277 | { "validate", 0, NULL, 'v' }, |
1278 | { "zero", 0, NULL, 'z' }, | |
c09d8751 CL |
1279 | { "1ref", 0, NULL, '1'}, |
1280 | { NULL, 0, NULL, 0 } | |
1281 | }; | |
1282 | ||
1283 | int main(int argc, char *argv[]) | |
1284 | { | |
1285 | int c; | |
1286 | int err; | |
1287 | char *pattern_source; | |
1288 | ||
1289 | page_size = getpagesize(); | |
c09d8751 | 1290 | |
8ff12cfc | 1291 | while ((c = getopt_long(argc, argv, "aAd::Defhil1noprstvzTS", |
a87615b8 | 1292 | opts, NULL)) != -1) |
f32143a2 | 1293 | switch (c) { |
c09d8751 CL |
1294 | case '1': |
1295 | show_single_ref = 1; | |
1296 | break; | |
1297 | case 'a': | |
1298 | show_alias = 1; | |
1299 | break; | |
8ff12cfc CL |
1300 | case 'A': |
1301 | sort_active = 1; | |
1302 | break; | |
a87615b8 CL |
1303 | case 'd': |
1304 | set_debug = 1; | |
1305 | if (!debug_opt_scan(optarg)) | |
1306 | fatal("Invalid debug option '%s'\n", optarg); | |
1307 | break; | |
8ff12cfc CL |
1308 | case 'D': |
1309 | show_activity = 1; | |
1310 | break; | |
a87615b8 CL |
1311 | case 'e': |
1312 | show_empty = 1; | |
1313 | break; | |
c09d8751 CL |
1314 | case 'f': |
1315 | show_first_alias = 1; | |
1316 | break; | |
1317 | case 'h': | |
1318 | usage(); | |
1319 | return 0; | |
1320 | case 'i': | |
1321 | show_inverted = 1; | |
1322 | break; | |
1323 | case 'n': | |
1324 | show_numa = 1; | |
1325 | break; | |
a87615b8 CL |
1326 | case 'o': |
1327 | show_ops = 1; | |
1328 | break; | |
1329 | case 'r': | |
1330 | show_report = 1; | |
1331 | break; | |
c09d8751 CL |
1332 | case 's': |
1333 | shrink = 1; | |
1334 | break; | |
1335 | case 'l': | |
1336 | show_slab = 1; | |
1337 | break; | |
1338 | case 't': | |
1339 | show_track = 1; | |
1340 | break; | |
1341 | case 'v': | |
1342 | validate = 1; | |
1343 | break; | |
1344 | case 'z': | |
1345 | skip_zero = 0; | |
1346 | break; | |
1347 | case 'T': | |
1348 | show_totals = 1; | |
1349 | break; | |
1350 | case 'S': | |
1351 | sort_size = 1; | |
1352 | break; | |
1353 | ||
1354 | default: | |
1355 | fatal("%s: Invalid option '%c'\n", argv[0], optopt); | |
1356 | ||
1357 | } | |
1358 | ||
a87615b8 CL |
1359 | if (!show_slab && !show_alias && !show_track && !show_report |
1360 | && !validate && !shrink && !set_debug && !show_ops) | |
c09d8751 CL |
1361 | show_slab = 1; |
1362 | ||
1363 | if (argc > optind) | |
1364 | pattern_source = argv[optind]; | |
1365 | else | |
1366 | pattern_source = ".*"; | |
1367 | ||
1368 | err = regcomp(&pattern, pattern_source, REG_ICASE|REG_NOSUB); | |
1369 | if (err) | |
1370 | fatal("%s: Invalid pattern '%s' code %d\n", | |
1371 | argv[0], pattern_source, err); | |
1372 | read_slab_dir(); | |
1373 | if (show_alias) | |
1374 | alias(); | |
1375 | else | |
1376 | if (show_totals) | |
1377 | totals(); | |
1378 | else { | |
1379 | link_slabs(); | |
1380 | rename_slabs(); | |
1381 | sort_slabs(); | |
1382 | output_slabs(); | |
1383 | } | |
1384 | return 0; | |
1385 | } |