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 | ||
56 | int slabs = 0; | |
a87615b8 | 57 | int actual_slabs = 0; |
c09d8751 CL |
58 | int aliases = 0; |
59 | int alias_targets = 0; | |
60 | int highest_node = 0; | |
61 | ||
62 | char buffer[4096]; | |
63 | ||
a87615b8 CL |
64 | int show_empty = 0; |
65 | int show_report = 0; | |
c09d8751 CL |
66 | int show_alias = 0; |
67 | int show_slab = 0; | |
68 | int skip_zero = 1; | |
69 | int show_numa = 0; | |
70 | int show_track = 0; | |
71 | int show_first_alias = 0; | |
72 | int validate = 0; | |
73 | int shrink = 0; | |
74 | int show_inverted = 0; | |
75 | int show_single_ref = 0; | |
76 | int show_totals = 0; | |
77 | int sort_size = 0; | |
8ff12cfc | 78 | int sort_active = 0; |
a87615b8 CL |
79 | int set_debug = 0; |
80 | int show_ops = 0; | |
8ff12cfc | 81 | int show_activity = 0; |
4980a963 | 82 | int output_lines = -1; |
a87615b8 CL |
83 | |
84 | /* Debug options */ | |
85 | int sanity = 0; | |
86 | int redzone = 0; | |
87 | int poison = 0; | |
88 | int tracking = 0; | |
89 | int tracing = 0; | |
c09d8751 CL |
90 | |
91 | int page_size; | |
92 | ||
93 | regex_t pattern; | |
94 | ||
b7ed698c | 95 | static void fatal(const char *x, ...) |
c09d8751 CL |
96 | { |
97 | va_list ap; | |
98 | ||
99 | va_start(ap, x); | |
100 | vfprintf(stderr, x, ap); | |
101 | va_end(ap); | |
f32143a2 | 102 | exit(EXIT_FAILURE); |
c09d8751 CL |
103 | } |
104 | ||
b7ed698c | 105 | static void usage(void) |
c09d8751 | 106 | { |
9da4714a | 107 | printf("slabinfo 4/15/2011. (c) 2007 sgi/(c) 2011 Linux Foundation.\n\n" |
a87615b8 | 108 | "slabinfo [-ahnpvtsz] [-d debugopts] [slab-regexp]\n" |
c09d8751 | 109 | "-a|--aliases Show aliases\n" |
8ff12cfc | 110 | "-A|--activity Most active slabs first\n" |
a87615b8 | 111 | "-d<options>|--debug=<options> Set/Clear Debug options\n" |
8ff12cfc CL |
112 | "-D|--display-active Switch line format to activity\n" |
113 | "-e|--empty Show empty slabs\n" | |
a87615b8 | 114 | "-f|--first-alias Show first alias\n" |
c09d8751 | 115 | "-h|--help Show usage information\n" |
a87615b8 CL |
116 | "-i|--inverted Inverted list\n" |
117 | "-l|--slabs Show slabs\n" | |
c09d8751 | 118 | "-n|--numa Show NUMA information\n" |
a87615b8 | 119 | "-o|--ops Show kmem_cache_ops\n" |
c09d8751 | 120 | "-s|--shrink Shrink slabs\n" |
a87615b8 CL |
121 | "-r|--report Detailed report on single slabs\n" |
122 | "-S|--Size Sort by size\n" | |
c09d8751 CL |
123 | "-t|--tracking Show alloc/free information\n" |
124 | "-T|--Totals Show summary information\n" | |
a87615b8 | 125 | "-v|--validate Validate slabs\n" |
c09d8751 | 126 | "-z|--zero Include empty slabs\n" |
c09d8751 | 127 | "-1|--1ref Single reference\n" |
4980a963 | 128 | "-N|--lines=K Show the first K slabs\n" |
a87615b8 CL |
129 | "\nValid debug options (FZPUT may be combined)\n" |
130 | "a / A Switch on all debug options (=FZUP)\n" | |
131 | "- Switch off all debug options\n" | |
132 | "f / F Sanity Checks (SLAB_DEBUG_FREE)\n" | |
133 | "z / Z Redzoning\n" | |
134 | "p / P Poisoning\n" | |
135 | "u / U Tracking\n" | |
136 | "t / T Tracing\n" | |
c09d8751 CL |
137 | ); |
138 | } | |
139 | ||
b7ed698c | 140 | static unsigned long read_obj(const char *name) |
c09d8751 CL |
141 | { |
142 | FILE *f = fopen(name, "r"); | |
143 | ||
144 | if (!f) | |
145 | buffer[0] = 0; | |
146 | else { | |
f32143a2 | 147 | if (!fgets(buffer, sizeof(buffer), f)) |
c09d8751 CL |
148 | buffer[0] = 0; |
149 | fclose(f); | |
150 | if (buffer[strlen(buffer)] == '\n') | |
151 | buffer[strlen(buffer)] = 0; | |
152 | } | |
153 | return strlen(buffer); | |
154 | } | |
155 | ||
156 | ||
157 | /* | |
158 | * Get the contents of an attribute | |
159 | */ | |
b7ed698c | 160 | static unsigned long get_obj(const char *name) |
c09d8751 CL |
161 | { |
162 | if (!read_obj(name)) | |
163 | return 0; | |
164 | ||
165 | return atol(buffer); | |
166 | } | |
167 | ||
b7ed698c | 168 | static unsigned long get_obj_and_str(const char *name, char **x) |
c09d8751 CL |
169 | { |
170 | unsigned long result = 0; | |
171 | char *p; | |
172 | ||
173 | *x = NULL; | |
174 | ||
175 | if (!read_obj(name)) { | |
176 | x = NULL; | |
177 | return 0; | |
178 | } | |
179 | result = strtoul(buffer, &p, 10); | |
180 | while (*p == ' ') | |
181 | p++; | |
182 | if (*p) | |
183 | *x = strdup(p); | |
184 | return result; | |
185 | } | |
186 | ||
b7ed698c | 187 | static void set_obj(struct slabinfo *s, const char *name, int n) |
c09d8751 CL |
188 | { |
189 | char x[100]; | |
a87615b8 | 190 | FILE *f; |
c09d8751 | 191 | |
f32143a2 | 192 | snprintf(x, 100, "%s/%s", s->name, name); |
a87615b8 | 193 | f = fopen(x, "w"); |
c09d8751 CL |
194 | if (!f) |
195 | fatal("Cannot write to %s\n", x); | |
196 | ||
197 | fprintf(f, "%d\n", n); | |
198 | fclose(f); | |
199 | } | |
200 | ||
b7ed698c | 201 | static unsigned long read_slab_obj(struct slabinfo *s, const char *name) |
a87615b8 CL |
202 | { |
203 | char x[100]; | |
204 | FILE *f; | |
f32143a2 | 205 | size_t l; |
a87615b8 | 206 | |
f32143a2 | 207 | snprintf(x, 100, "%s/%s", s->name, name); |
a87615b8 CL |
208 | f = fopen(x, "r"); |
209 | if (!f) { | |
210 | buffer[0] = 0; | |
211 | l = 0; | |
212 | } else { | |
213 | l = fread(buffer, 1, sizeof(buffer), f); | |
214 | buffer[l] = 0; | |
215 | fclose(f); | |
216 | } | |
217 | return l; | |
218 | } | |
219 | ||
220 | ||
c09d8751 CL |
221 | /* |
222 | * Put a size string together | |
223 | */ | |
b7ed698c | 224 | static int store_size(char *buffer, unsigned long value) |
c09d8751 CL |
225 | { |
226 | unsigned long divisor = 1; | |
227 | char trailer = 0; | |
228 | int n; | |
229 | ||
230 | if (value > 1000000000UL) { | |
231 | divisor = 100000000UL; | |
232 | trailer = 'G'; | |
233 | } else if (value > 1000000UL) { | |
234 | divisor = 100000UL; | |
235 | trailer = 'M'; | |
236 | } else if (value > 1000UL) { | |
237 | divisor = 100; | |
238 | trailer = 'K'; | |
239 | } | |
240 | ||
241 | value /= divisor; | |
242 | n = sprintf(buffer, "%ld",value); | |
243 | if (trailer) { | |
244 | buffer[n] = trailer; | |
245 | n++; | |
246 | buffer[n] = 0; | |
247 | } | |
248 | if (divisor != 1) { | |
249 | memmove(buffer + n - 2, buffer + n - 3, 4); | |
250 | buffer[n-2] = '.'; | |
251 | n++; | |
252 | } | |
253 | return n; | |
254 | } | |
255 | ||
b7ed698c | 256 | static void decode_numa_list(int *numa, char *t) |
c09d8751 CL |
257 | { |
258 | int node; | |
259 | int nr; | |
260 | ||
261 | memset(numa, 0, MAX_NODES * sizeof(int)); | |
262 | ||
eefaca9c CL |
263 | if (!t) |
264 | return; | |
265 | ||
c09d8751 CL |
266 | while (*t == 'N') { |
267 | t++; | |
268 | node = strtoul(t, &t, 10); | |
269 | if (*t == '=') { | |
270 | t++; | |
271 | nr = strtoul(t, &t, 10); | |
272 | numa[node] = nr; | |
273 | if (node > highest_node) | |
274 | highest_node = node; | |
275 | } | |
276 | while (*t == ' ') | |
277 | t++; | |
278 | } | |
279 | } | |
280 | ||
b7ed698c | 281 | static void slab_validate(struct slabinfo *s) |
c09d8751 | 282 | { |
32f9306b CL |
283 | if (strcmp(s->name, "*") == 0) |
284 | return; | |
285 | ||
c09d8751 CL |
286 | set_obj(s, "validate", 1); |
287 | } | |
288 | ||
b7ed698c | 289 | static void slab_shrink(struct slabinfo *s) |
c09d8751 | 290 | { |
32f9306b CL |
291 | if (strcmp(s->name, "*") == 0) |
292 | return; | |
293 | ||
c09d8751 CL |
294 | set_obj(s, "shrink", 1); |
295 | } | |
296 | ||
297 | int line = 0; | |
298 | ||
b7ed698c | 299 | static void first_line(void) |
c09d8751 | 300 | { |
8ff12cfc | 301 | if (show_activity) |
9da4714a | 302 | printf("Name Objects Alloc Free %%Fast Fallb O CmpX UL\n"); |
8ff12cfc CL |
303 | else |
304 | printf("Name Objects Objsize Space " | |
305 | "Slabs/Part/Cpu O/S O %%Fr %%Ef Flg\n"); | |
c09d8751 CL |
306 | } |
307 | ||
308 | /* | |
309 | * Find the shortest alias of a slab | |
310 | */ | |
b7ed698c | 311 | static struct aliasinfo *find_one_alias(struct slabinfo *find) |
c09d8751 CL |
312 | { |
313 | struct aliasinfo *a; | |
314 | struct aliasinfo *best = NULL; | |
315 | ||
316 | for(a = aliasinfo;a < aliasinfo + aliases; a++) { | |
317 | if (a->slab == find && | |
318 | (!best || strlen(best->name) < strlen(a->name))) { | |
319 | best = a; | |
320 | if (strncmp(a->name,"kmall", 5) == 0) | |
321 | return best; | |
322 | } | |
323 | } | |
a87615b8 | 324 | return best; |
c09d8751 CL |
325 | } |
326 | ||
b7ed698c | 327 | static unsigned long slab_size(struct slabinfo *s) |
c09d8751 CL |
328 | { |
329 | return s->slabs * (page_size << s->order); | |
330 | } | |
331 | ||
b7ed698c | 332 | static unsigned long slab_activity(struct slabinfo *s) |
8ff12cfc CL |
333 | { |
334 | return s->alloc_fastpath + s->free_fastpath + | |
335 | s->alloc_slowpath + s->free_slowpath; | |
336 | } | |
337 | ||
b7ed698c | 338 | static void slab_numa(struct slabinfo *s, int mode) |
a87615b8 CL |
339 | { |
340 | int node; | |
341 | ||
342 | if (strcmp(s->name, "*") == 0) | |
343 | return; | |
344 | ||
345 | if (!highest_node) { | |
346 | printf("\n%s: No NUMA information available.\n", s->name); | |
347 | return; | |
348 | } | |
349 | ||
350 | if (skip_zero && !s->slabs) | |
351 | return; | |
352 | ||
353 | if (!line) { | |
354 | printf("\n%-21s:", mode ? "NUMA nodes" : "Slab"); | |
355 | for(node = 0; node <= highest_node; node++) | |
356 | printf(" %4d", node); | |
357 | printf("\n----------------------"); | |
358 | for(node = 0; node <= highest_node; node++) | |
359 | printf("-----"); | |
360 | printf("\n"); | |
361 | } | |
362 | printf("%-21s ", mode ? "All slabs" : s->name); | |
363 | for(node = 0; node <= highest_node; node++) { | |
364 | char b[20]; | |
365 | ||
366 | store_size(b, s->numa[node]); | |
367 | printf(" %4s", b); | |
368 | } | |
369 | printf("\n"); | |
370 | if (mode) { | |
371 | printf("%-21s ", "Partial slabs"); | |
372 | for(node = 0; node <= highest_node; node++) { | |
373 | char b[20]; | |
374 | ||
375 | store_size(b, s->numa_partial[node]); | |
376 | printf(" %4s", b); | |
377 | } | |
378 | printf("\n"); | |
379 | } | |
380 | line++; | |
381 | } | |
382 | ||
b7ed698c | 383 | static void show_tracking(struct slabinfo *s) |
a87615b8 CL |
384 | { |
385 | printf("\n%s: Kernel object allocation\n", s->name); | |
386 | printf("-----------------------------------------------------------------------\n"); | |
387 | if (read_slab_obj(s, "alloc_calls")) | |
9da4714a | 388 | printf("%s", buffer); |
a87615b8 CL |
389 | else |
390 | printf("No Data\n"); | |
391 | ||
392 | printf("\n%s: Kernel object freeing\n", s->name); | |
393 | printf("------------------------------------------------------------------------\n"); | |
394 | if (read_slab_obj(s, "free_calls")) | |
9da4714a | 395 | printf("%s", buffer); |
a87615b8 CL |
396 | else |
397 | printf("No Data\n"); | |
398 | ||
399 | } | |
400 | ||
b7ed698c | 401 | static void ops(struct slabinfo *s) |
a87615b8 CL |
402 | { |
403 | if (strcmp(s->name, "*") == 0) | |
404 | return; | |
405 | ||
406 | if (read_slab_obj(s, "ops")) { | |
407 | printf("\n%s: kmem_cache operations\n", s->name); | |
408 | printf("--------------------------------------------\n"); | |
9da4714a | 409 | printf("%s", buffer); |
a87615b8 CL |
410 | } else |
411 | printf("\n%s has no kmem_cache operations\n", s->name); | |
412 | } | |
413 | ||
b7ed698c | 414 | static const char *onoff(int x) |
a87615b8 CL |
415 | { |
416 | if (x) | |
417 | return "On "; | |
418 | return "Off"; | |
419 | } | |
420 | ||
b7ed698c | 421 | static void slab_stats(struct slabinfo *s) |
8ff12cfc CL |
422 | { |
423 | unsigned long total_alloc; | |
424 | unsigned long total_free; | |
425 | unsigned long total; | |
426 | ||
427 | if (!s->alloc_slab) | |
428 | return; | |
429 | ||
430 | total_alloc = s->alloc_fastpath + s->alloc_slowpath; | |
431 | total_free = s->free_fastpath + s->free_slowpath; | |
432 | ||
433 | if (!total_alloc) | |
434 | return; | |
435 | ||
436 | printf("\n"); | |
437 | printf("Slab Perf Counter Alloc Free %%Al %%Fr\n"); | |
438 | printf("--------------------------------------------------\n"); | |
439 | printf("Fastpath %8lu %8lu %3lu %3lu\n", | |
440 | s->alloc_fastpath, s->free_fastpath, | |
441 | s->alloc_fastpath * 100 / total_alloc, | |
4b57ad93 | 442 | total_free ? s->free_fastpath * 100 / total_free : 0); |
8ff12cfc CL |
443 | printf("Slowpath %8lu %8lu %3lu %3lu\n", |
444 | total_alloc - s->alloc_fastpath, s->free_slowpath, | |
445 | (total_alloc - s->alloc_fastpath) * 100 / total_alloc, | |
4b57ad93 | 446 | total_free ? s->free_slowpath * 100 / total_free : 0); |
8ff12cfc CL |
447 | printf("Page Alloc %8lu %8lu %3lu %3lu\n", |
448 | s->alloc_slab, s->free_slab, | |
449 | s->alloc_slab * 100 / total_alloc, | |
4b57ad93 | 450 | total_free ? s->free_slab * 100 / total_free : 0); |
8ff12cfc CL |
451 | printf("Add partial %8lu %8lu %3lu %3lu\n", |
452 | s->deactivate_to_head + s->deactivate_to_tail, | |
453 | s->free_add_partial, | |
454 | (s->deactivate_to_head + s->deactivate_to_tail) * 100 / total_alloc, | |
4b57ad93 | 455 | total_free ? s->free_add_partial * 100 / total_free : 0); |
8ff12cfc CL |
456 | printf("Remove partial %8lu %8lu %3lu %3lu\n", |
457 | s->alloc_from_partial, s->free_remove_partial, | |
458 | s->alloc_from_partial * 100 / total_alloc, | |
4b57ad93 | 459 | total_free ? s->free_remove_partial * 100 / total_free : 0); |
8ff12cfc | 460 | |
aca726a0 CL |
461 | printf("Cpu partial list %8lu %8lu %3lu %3lu\n", |
462 | s->cpu_partial_alloc, s->cpu_partial_free, | |
463 | s->cpu_partial_alloc * 100 / total_alloc, | |
4b57ad93 | 464 | total_free ? s->cpu_partial_free * 100 / total_free : 0); |
aca726a0 | 465 | |
8ff12cfc CL |
466 | printf("RemoteObj/SlabFrozen %8lu %8lu %3lu %3lu\n", |
467 | s->deactivate_remote_frees, s->free_frozen, | |
468 | s->deactivate_remote_frees * 100 / total_alloc, | |
4b57ad93 | 469 | total_free ? s->free_frozen * 100 / total_free : 0); |
8ff12cfc CL |
470 | |
471 | printf("Total %8lu %8lu\n\n", total_alloc, total_free); | |
472 | ||
473 | if (s->cpuslab_flush) | |
474 | printf("Flushes %8lu\n", s->cpuslab_flush); | |
475 | ||
8ff12cfc | 476 | total = s->deactivate_full + s->deactivate_empty + |
9da4714a CL |
477 | s->deactivate_to_head + s->deactivate_to_tail + s->deactivate_bypass; |
478 | ||
479 | if (total) { | |
480 | printf("\nSlab Deactivation Ocurrences %%\n"); | |
481 | printf("-------------------------------------------------\n"); | |
482 | printf("Slab full %7lu %3lu%%\n", | |
483 | s->deactivate_full, (s->deactivate_full * 100) / total); | |
484 | printf("Slab empty %7lu %3lu%%\n", | |
485 | s->deactivate_empty, (s->deactivate_empty * 100) / total); | |
486 | printf("Moved to head of partial list %7lu %3lu%%\n", | |
487 | s->deactivate_to_head, (s->deactivate_to_head * 100) / total); | |
488 | printf("Moved to tail of partial list %7lu %3lu%%\n", | |
8ff12cfc | 489 | s->deactivate_to_tail, (s->deactivate_to_tail * 100) / total); |
9da4714a CL |
490 | printf("Deactivation bypass %7lu %3lu%%\n", |
491 | s->deactivate_bypass, (s->deactivate_bypass * 100) / total); | |
492 | printf("Refilled from foreign frees %7lu %3lu%%\n", | |
493 | s->alloc_refill, (s->alloc_refill * 100) / total); | |
494 | printf("Node mismatch %7lu %3lu%%\n", | |
495 | s->alloc_node_mismatch, (s->alloc_node_mismatch * 100) / total); | |
496 | } | |
497 | ||
498 | if (s->cmpxchg_double_fail || s->cmpxchg_double_cpu_fail) | |
499 | printf("\nCmpxchg_double Looping\n------------------------\n"); | |
500 | printf("Locked Cmpxchg Double redos %lu\nUnlocked Cmpxchg Double redos %lu\n", | |
501 | s->cmpxchg_double_fail, s->cmpxchg_double_cpu_fail); | |
8ff12cfc CL |
502 | } |
503 | ||
b7ed698c | 504 | static void report(struct slabinfo *s) |
a87615b8 CL |
505 | { |
506 | if (strcmp(s->name, "*") == 0) | |
507 | return; | |
eefaca9c | 508 | |
ac078602 | 509 | printf("\nSlabcache: %-20s Aliases: %2d Order : %2d Objects: %lu\n", |
eefaca9c | 510 | s->name, s->aliases, s->order, s->objects); |
a87615b8 CL |
511 | if (s->hwcache_align) |
512 | printf("** Hardware cacheline aligned\n"); | |
513 | if (s->cache_dma) | |
514 | printf("** Memory is allocated in a special DMA zone\n"); | |
515 | if (s->destroy_by_rcu) | |
516 | printf("** Slabs are destroyed via RCU\n"); | |
517 | if (s->reclaim_account) | |
518 | printf("** Reclaim accounting active\n"); | |
519 | ||
520 | printf("\nSizes (bytes) Slabs Debug Memory\n"); | |
521 | printf("------------------------------------------------------------------------\n"); | |
522 | printf("Object : %7d Total : %7ld Sanity Checks : %s Total: %7ld\n", | |
523 | s->object_size, s->slabs, onoff(s->sanity_checks), | |
524 | s->slabs * (page_size << s->order)); | |
525 | printf("SlabObj: %7d Full : %7ld Redzoning : %s Used : %7ld\n", | |
526 | s->slab_size, s->slabs - s->partial - s->cpu_slabs, | |
527 | onoff(s->red_zone), s->objects * s->object_size); | |
528 | printf("SlabSiz: %7d Partial: %7ld Poisoning : %s Loss : %7ld\n", | |
529 | page_size << s->order, s->partial, onoff(s->poison), | |
530 | s->slabs * (page_size << s->order) - s->objects * s->object_size); | |
531 | printf("Loss : %7d CpuSlab: %7d Tracking : %s Lalig: %7ld\n", | |
532 | s->slab_size - s->object_size, s->cpu_slabs, onoff(s->store_user), | |
533 | (s->slab_size - s->object_size) * s->objects); | |
534 | printf("Align : %7d Objects: %7d Tracing : %s Lpadd: %7ld\n", | |
535 | s->align, s->objs_per_slab, onoff(s->trace), | |
536 | ((page_size << s->order) - s->objs_per_slab * s->slab_size) * | |
537 | s->slabs); | |
538 | ||
539 | ops(s); | |
540 | show_tracking(s); | |
541 | slab_numa(s, 1); | |
8ff12cfc | 542 | slab_stats(s); |
a87615b8 | 543 | } |
c09d8751 | 544 | |
b7ed698c | 545 | static void slabcache(struct slabinfo *s) |
c09d8751 CL |
546 | { |
547 | char size_str[20]; | |
548 | char dist_str[40]; | |
549 | char flags[20]; | |
550 | char *p = flags; | |
551 | ||
a87615b8 CL |
552 | if (strcmp(s->name, "*") == 0) |
553 | return; | |
554 | ||
555 | if (actual_slabs == 1) { | |
556 | report(s); | |
557 | return; | |
558 | } | |
559 | ||
560 | if (skip_zero && !show_empty && !s->slabs) | |
561 | return; | |
562 | ||
563 | if (show_empty && s->slabs) | |
c09d8751 CL |
564 | return; |
565 | ||
566 | store_size(size_str, slab_size(s)); | |
205ab99d CL |
567 | snprintf(dist_str, 40, "%lu/%lu/%d", s->slabs - s->cpu_slabs, |
568 | s->partial, s->cpu_slabs); | |
c09d8751 CL |
569 | |
570 | if (!line++) | |
571 | first_line(); | |
572 | ||
573 | if (s->aliases) | |
574 | *p++ = '*'; | |
575 | if (s->cache_dma) | |
576 | *p++ = 'd'; | |
577 | if (s->hwcache_align) | |
578 | *p++ = 'A'; | |
579 | if (s->poison) | |
580 | *p++ = 'P'; | |
581 | if (s->reclaim_account) | |
582 | *p++ = 'a'; | |
583 | if (s->red_zone) | |
584 | *p++ = 'Z'; | |
585 | if (s->sanity_checks) | |
586 | *p++ = 'F'; | |
587 | if (s->store_user) | |
588 | *p++ = 'U'; | |
589 | if (s->trace) | |
590 | *p++ = 'T'; | |
591 | ||
592 | *p = 0; | |
8ff12cfc CL |
593 | if (show_activity) { |
594 | unsigned long total_alloc; | |
595 | unsigned long total_free; | |
596 | ||
597 | total_alloc = s->alloc_fastpath + s->alloc_slowpath; | |
598 | total_free = s->free_fastpath + s->free_slowpath; | |
599 | ||
9da4714a | 600 | printf("%-21s %8ld %10ld %10ld %3ld %3ld %5ld %1d %4ld %4ld\n", |
8ff12cfc CL |
601 | s->name, s->objects, |
602 | total_alloc, total_free, | |
603 | total_alloc ? (s->alloc_fastpath * 100 / total_alloc) : 0, | |
f715e6f1 | 604 | total_free ? (s->free_fastpath * 100 / total_free) : 0, |
9da4714a CL |
605 | s->order_fallback, s->order, s->cmpxchg_double_fail, |
606 | s->cmpxchg_double_cpu_fail); | |
8ff12cfc CL |
607 | } |
608 | else | |
609 | printf("%-21s %8ld %7d %8s %14s %4d %1d %3ld %3ld %s\n", | |
610 | s->name, s->objects, s->object_size, size_str, dist_str, | |
611 | s->objs_per_slab, s->order, | |
612 | s->slabs ? (s->partial * 100) / s->slabs : 100, | |
613 | s->slabs ? (s->objects * s->object_size * 100) / | |
614 | (s->slabs * (page_size << s->order)) : 100, | |
615 | flags); | |
c09d8751 CL |
616 | } |
617 | ||
a87615b8 CL |
618 | /* |
619 | * Analyze debug options. Return false if something is amiss. | |
620 | */ | |
b7ed698c | 621 | static int debug_opt_scan(char *opt) |
c09d8751 | 622 | { |
a87615b8 CL |
623 | if (!opt || !opt[0] || strcmp(opt, "-") == 0) |
624 | return 1; | |
625 | ||
626 | if (strcasecmp(opt, "a") == 0) { | |
627 | sanity = 1; | |
628 | poison = 1; | |
629 | redzone = 1; | |
630 | tracking = 1; | |
631 | return 1; | |
632 | } | |
c09d8751 | 633 | |
a87615b8 | 634 | for ( ; *opt; opt++) |
0d24db33 | 635 | switch (*opt) { |
a87615b8 CL |
636 | case 'F' : case 'f': |
637 | if (sanity) | |
638 | return 0; | |
639 | sanity = 1; | |
640 | break; | |
641 | case 'P' : case 'p': | |
642 | if (poison) | |
643 | return 0; | |
644 | poison = 1; | |
645 | break; | |
c09d8751 | 646 | |
a87615b8 CL |
647 | case 'Z' : case 'z': |
648 | if (redzone) | |
649 | return 0; | |
650 | redzone = 1; | |
651 | break; | |
c09d8751 | 652 | |
a87615b8 CL |
653 | case 'U' : case 'u': |
654 | if (tracking) | |
655 | return 0; | |
656 | tracking = 1; | |
657 | break; | |
c09d8751 | 658 | |
a87615b8 CL |
659 | case 'T' : case 't': |
660 | if (tracing) | |
661 | return 0; | |
662 | tracing = 1; | |
663 | break; | |
664 | default: | |
665 | return 0; | |
666 | } | |
667 | return 1; | |
c09d8751 CL |
668 | } |
669 | ||
b7ed698c | 670 | static int slab_empty(struct slabinfo *s) |
c09d8751 | 671 | { |
a87615b8 CL |
672 | if (s->objects > 0) |
673 | return 0; | |
c09d8751 | 674 | |
a87615b8 CL |
675 | /* |
676 | * We may still have slabs even if there are no objects. Shrinking will | |
677 | * remove them. | |
678 | */ | |
679 | if (s->slabs != 0) | |
680 | set_obj(s, "shrink", 1); | |
c09d8751 | 681 | |
a87615b8 CL |
682 | return 1; |
683 | } | |
684 | ||
b7ed698c | 685 | static void slab_debug(struct slabinfo *s) |
a87615b8 | 686 | { |
32f9306b CL |
687 | if (strcmp(s->name, "*") == 0) |
688 | return; | |
689 | ||
a87615b8 CL |
690 | if (sanity && !s->sanity_checks) { |
691 | set_obj(s, "sanity", 1); | |
692 | } | |
693 | if (!sanity && s->sanity_checks) { | |
694 | if (slab_empty(s)) | |
695 | set_obj(s, "sanity", 0); | |
696 | else | |
697 | fprintf(stderr, "%s not empty cannot disable sanity checks\n", s->name); | |
698 | } | |
699 | if (redzone && !s->red_zone) { | |
700 | if (slab_empty(s)) | |
701 | set_obj(s, "red_zone", 1); | |
702 | else | |
703 | fprintf(stderr, "%s not empty cannot enable redzoning\n", s->name); | |
704 | } | |
705 | if (!redzone && s->red_zone) { | |
706 | if (slab_empty(s)) | |
707 | set_obj(s, "red_zone", 0); | |
708 | else | |
709 | fprintf(stderr, "%s not empty cannot disable redzoning\n", s->name); | |
710 | } | |
711 | if (poison && !s->poison) { | |
712 | if (slab_empty(s)) | |
713 | set_obj(s, "poison", 1); | |
714 | else | |
715 | fprintf(stderr, "%s not empty cannot enable poisoning\n", s->name); | |
716 | } | |
717 | if (!poison && s->poison) { | |
718 | if (slab_empty(s)) | |
719 | set_obj(s, "poison", 0); | |
720 | else | |
721 | fprintf(stderr, "%s not empty cannot disable poisoning\n", s->name); | |
722 | } | |
723 | if (tracking && !s->store_user) { | |
724 | if (slab_empty(s)) | |
725 | set_obj(s, "store_user", 1); | |
726 | else | |
727 | fprintf(stderr, "%s not empty cannot enable tracking\n", s->name); | |
728 | } | |
729 | if (!tracking && s->store_user) { | |
730 | if (slab_empty(s)) | |
731 | set_obj(s, "store_user", 0); | |
732 | else | |
733 | fprintf(stderr, "%s not empty cannot disable tracking\n", s->name); | |
734 | } | |
735 | if (tracing && !s->trace) { | |
736 | if (slabs == 1) | |
737 | set_obj(s, "trace", 1); | |
738 | else | |
739 | fprintf(stderr, "%s can only enable trace for one slab at a time\n", s->name); | |
740 | } | |
741 | if (!tracing && s->trace) | |
742 | set_obj(s, "trace", 1); | |
c09d8751 CL |
743 | } |
744 | ||
b7ed698c | 745 | static void totals(void) |
c09d8751 CL |
746 | { |
747 | struct slabinfo *s; | |
748 | ||
749 | int used_slabs = 0; | |
750 | char b1[20], b2[20], b3[20], b4[20]; | |
751 | unsigned long long max = 1ULL << 63; | |
752 | ||
753 | /* Object size */ | |
754 | unsigned long long min_objsize = max, max_objsize = 0, avg_objsize; | |
755 | ||
756 | /* Number of partial slabs in a slabcache */ | |
757 | unsigned long long min_partial = max, max_partial = 0, | |
758 | avg_partial, total_partial = 0; | |
759 | ||
760 | /* Number of slabs in a slab cache */ | |
761 | unsigned long long min_slabs = max, max_slabs = 0, | |
762 | avg_slabs, total_slabs = 0; | |
763 | ||
764 | /* Size of the whole slab */ | |
765 | unsigned long long min_size = max, max_size = 0, | |
766 | avg_size, total_size = 0; | |
767 | ||
768 | /* Bytes used for object storage in a slab */ | |
769 | unsigned long long min_used = max, max_used = 0, | |
770 | avg_used, total_used = 0; | |
771 | ||
772 | /* Waste: Bytes used for alignment and padding */ | |
773 | unsigned long long min_waste = max, max_waste = 0, | |
774 | avg_waste, total_waste = 0; | |
775 | /* Number of objects in a slab */ | |
776 | unsigned long long min_objects = max, max_objects = 0, | |
777 | avg_objects, total_objects = 0; | |
778 | /* Waste per object */ | |
779 | unsigned long long min_objwaste = max, | |
780 | max_objwaste = 0, avg_objwaste, | |
781 | total_objwaste = 0; | |
782 | ||
783 | /* Memory per object */ | |
784 | unsigned long long min_memobj = max, | |
785 | max_memobj = 0, avg_memobj, | |
786 | total_objsize = 0; | |
787 | ||
788 | /* Percentage of partial slabs per slab */ | |
789 | unsigned long min_ppart = 100, max_ppart = 0, | |
790 | avg_ppart, total_ppart = 0; | |
791 | ||
792 | /* Number of objects in partial slabs */ | |
793 | unsigned long min_partobj = max, max_partobj = 0, | |
794 | avg_partobj, total_partobj = 0; | |
795 | ||
796 | /* Percentage of partial objects of all objects in a slab */ | |
797 | unsigned long min_ppartobj = 100, max_ppartobj = 0, | |
798 | avg_ppartobj, total_ppartobj = 0; | |
799 | ||
800 | ||
801 | for (s = slabinfo; s < slabinfo + slabs; s++) { | |
802 | unsigned long long size; | |
803 | unsigned long used; | |
804 | unsigned long long wasted; | |
805 | unsigned long long objwaste; | |
c09d8751 CL |
806 | unsigned long percentage_partial_slabs; |
807 | unsigned long percentage_partial_objs; | |
808 | ||
809 | if (!s->slabs || !s->objects) | |
810 | continue; | |
811 | ||
812 | used_slabs++; | |
813 | ||
814 | size = slab_size(s); | |
815 | used = s->objects * s->object_size; | |
816 | wasted = size - used; | |
817 | objwaste = s->slab_size - s->object_size; | |
818 | ||
c09d8751 CL |
819 | percentage_partial_slabs = s->partial * 100 / s->slabs; |
820 | if (percentage_partial_slabs > 100) | |
821 | percentage_partial_slabs = 100; | |
822 | ||
205ab99d | 823 | percentage_partial_objs = s->objects_partial * 100 |
c09d8751 CL |
824 | / s->objects; |
825 | ||
826 | if (percentage_partial_objs > 100) | |
827 | percentage_partial_objs = 100; | |
828 | ||
829 | if (s->object_size < min_objsize) | |
830 | min_objsize = s->object_size; | |
831 | if (s->partial < min_partial) | |
832 | min_partial = s->partial; | |
833 | if (s->slabs < min_slabs) | |
834 | min_slabs = s->slabs; | |
835 | if (size < min_size) | |
836 | min_size = size; | |
837 | if (wasted < min_waste) | |
838 | min_waste = wasted; | |
839 | if (objwaste < min_objwaste) | |
840 | min_objwaste = objwaste; | |
841 | if (s->objects < min_objects) | |
842 | min_objects = s->objects; | |
843 | if (used < min_used) | |
844 | min_used = used; | |
205ab99d CL |
845 | if (s->objects_partial < min_partobj) |
846 | min_partobj = s->objects_partial; | |
c09d8751 CL |
847 | if (percentage_partial_slabs < min_ppart) |
848 | min_ppart = percentage_partial_slabs; | |
849 | if (percentage_partial_objs < min_ppartobj) | |
850 | min_ppartobj = percentage_partial_objs; | |
851 | if (s->slab_size < min_memobj) | |
852 | min_memobj = s->slab_size; | |
853 | ||
854 | if (s->object_size > max_objsize) | |
855 | max_objsize = s->object_size; | |
856 | if (s->partial > max_partial) | |
857 | max_partial = s->partial; | |
858 | if (s->slabs > max_slabs) | |
859 | max_slabs = s->slabs; | |
860 | if (size > max_size) | |
861 | max_size = size; | |
862 | if (wasted > max_waste) | |
863 | max_waste = wasted; | |
864 | if (objwaste > max_objwaste) | |
865 | max_objwaste = objwaste; | |
866 | if (s->objects > max_objects) | |
867 | max_objects = s->objects; | |
868 | if (used > max_used) | |
869 | max_used = used; | |
205ab99d CL |
870 | if (s->objects_partial > max_partobj) |
871 | max_partobj = s->objects_partial; | |
c09d8751 CL |
872 | if (percentage_partial_slabs > max_ppart) |
873 | max_ppart = percentage_partial_slabs; | |
874 | if (percentage_partial_objs > max_ppartobj) | |
875 | max_ppartobj = percentage_partial_objs; | |
876 | if (s->slab_size > max_memobj) | |
877 | max_memobj = s->slab_size; | |
878 | ||
879 | total_partial += s->partial; | |
880 | total_slabs += s->slabs; | |
881 | total_size += size; | |
882 | total_waste += wasted; | |
883 | ||
884 | total_objects += s->objects; | |
885 | total_used += used; | |
205ab99d | 886 | total_partobj += s->objects_partial; |
c09d8751 CL |
887 | total_ppart += percentage_partial_slabs; |
888 | total_ppartobj += percentage_partial_objs; | |
889 | ||
890 | total_objwaste += s->objects * objwaste; | |
891 | total_objsize += s->objects * s->slab_size; | |
892 | } | |
893 | ||
894 | if (!total_objects) { | |
895 | printf("No objects\n"); | |
896 | return; | |
897 | } | |
898 | if (!used_slabs) { | |
899 | printf("No slabs\n"); | |
900 | return; | |
901 | } | |
902 | ||
903 | /* Per slab averages */ | |
904 | avg_partial = total_partial / used_slabs; | |
905 | avg_slabs = total_slabs / used_slabs; | |
906 | avg_size = total_size / used_slabs; | |
907 | avg_waste = total_waste / used_slabs; | |
908 | ||
909 | avg_objects = total_objects / used_slabs; | |
910 | avg_used = total_used / used_slabs; | |
911 | avg_partobj = total_partobj / used_slabs; | |
912 | avg_ppart = total_ppart / used_slabs; | |
913 | avg_ppartobj = total_ppartobj / used_slabs; | |
914 | ||
915 | /* Per object object sizes */ | |
916 | avg_objsize = total_used / total_objects; | |
917 | avg_objwaste = total_objwaste / total_objects; | |
918 | avg_partobj = total_partobj * 100 / total_objects; | |
919 | avg_memobj = total_objsize / total_objects; | |
920 | ||
921 | printf("Slabcache Totals\n"); | |
922 | printf("----------------\n"); | |
923 | printf("Slabcaches : %3d Aliases : %3d->%-3d Active: %3d\n", | |
924 | slabs, aliases, alias_targets, used_slabs); | |
925 | ||
926 | store_size(b1, total_size);store_size(b2, total_waste); | |
927 | store_size(b3, total_waste * 100 / total_used); | |
eefaca9c | 928 | printf("Memory used: %6s # Loss : %6s MRatio:%6s%%\n", b1, b2, b3); |
c09d8751 CL |
929 | |
930 | store_size(b1, total_objects);store_size(b2, total_partobj); | |
931 | store_size(b3, total_partobj * 100 / total_objects); | |
eefaca9c | 932 | printf("# Objects : %6s # PartObj: %6s ORatio:%6s%%\n", b1, b2, b3); |
c09d8751 CL |
933 | |
934 | printf("\n"); | |
935 | printf("Per Cache Average Min Max Total\n"); | |
936 | printf("---------------------------------------------------------\n"); | |
937 | ||
938 | store_size(b1, avg_objects);store_size(b2, min_objects); | |
939 | store_size(b3, max_objects);store_size(b4, total_objects); | |
940 | printf("#Objects %10s %10s %10s %10s\n", | |
941 | b1, b2, b3, b4); | |
942 | ||
943 | store_size(b1, avg_slabs);store_size(b2, min_slabs); | |
944 | store_size(b3, max_slabs);store_size(b4, total_slabs); | |
945 | printf("#Slabs %10s %10s %10s %10s\n", | |
946 | b1, b2, b3, b4); | |
947 | ||
948 | store_size(b1, avg_partial);store_size(b2, min_partial); | |
949 | store_size(b3, max_partial);store_size(b4, total_partial); | |
950 | printf("#PartSlab %10s %10s %10s %10s\n", | |
951 | b1, b2, b3, b4); | |
952 | store_size(b1, avg_ppart);store_size(b2, min_ppart); | |
953 | store_size(b3, max_ppart); | |
954 | store_size(b4, total_partial * 100 / total_slabs); | |
eefaca9c | 955 | printf("%%PartSlab%10s%% %10s%% %10s%% %10s%%\n", |
c09d8751 CL |
956 | b1, b2, b3, b4); |
957 | ||
958 | store_size(b1, avg_partobj);store_size(b2, min_partobj); | |
959 | store_size(b3, max_partobj); | |
960 | store_size(b4, total_partobj); | |
961 | printf("PartObjs %10s %10s %10s %10s\n", | |
962 | b1, b2, b3, b4); | |
963 | ||
964 | store_size(b1, avg_ppartobj);store_size(b2, min_ppartobj); | |
965 | store_size(b3, max_ppartobj); | |
966 | store_size(b4, total_partobj * 100 / total_objects); | |
eefaca9c | 967 | printf("%% PartObj%10s%% %10s%% %10s%% %10s%%\n", |
c09d8751 CL |
968 | b1, b2, b3, b4); |
969 | ||
970 | store_size(b1, avg_size);store_size(b2, min_size); | |
971 | store_size(b3, max_size);store_size(b4, total_size); | |
972 | printf("Memory %10s %10s %10s %10s\n", | |
973 | b1, b2, b3, b4); | |
974 | ||
975 | store_size(b1, avg_used);store_size(b2, min_used); | |
976 | store_size(b3, max_used);store_size(b4, total_used); | |
977 | printf("Used %10s %10s %10s %10s\n", | |
978 | b1, b2, b3, b4); | |
979 | ||
980 | store_size(b1, avg_waste);store_size(b2, min_waste); | |
981 | store_size(b3, max_waste);store_size(b4, total_waste); | |
982 | printf("Loss %10s %10s %10s %10s\n", | |
983 | b1, b2, b3, b4); | |
984 | ||
985 | printf("\n"); | |
986 | printf("Per Object Average Min Max\n"); | |
987 | printf("---------------------------------------------\n"); | |
988 | ||
989 | store_size(b1, avg_memobj);store_size(b2, min_memobj); | |
990 | store_size(b3, max_memobj); | |
991 | printf("Memory %10s %10s %10s\n", | |
992 | b1, b2, b3); | |
993 | store_size(b1, avg_objsize);store_size(b2, min_objsize); | |
994 | store_size(b3, max_objsize); | |
995 | printf("User %10s %10s %10s\n", | |
996 | b1, b2, b3); | |
997 | ||
998 | store_size(b1, avg_objwaste);store_size(b2, min_objwaste); | |
999 | store_size(b3, max_objwaste); | |
1000 | printf("Loss %10s %10s %10s\n", | |
1001 | b1, b2, b3); | |
1002 | } | |
1003 | ||
b7ed698c | 1004 | static void sort_slabs(void) |
c09d8751 CL |
1005 | { |
1006 | struct slabinfo *s1,*s2; | |
1007 | ||
1008 | for (s1 = slabinfo; s1 < slabinfo + slabs; s1++) { | |
1009 | for (s2 = s1 + 1; s2 < slabinfo + slabs; s2++) { | |
1010 | int result; | |
1011 | ||
1012 | if (sort_size) | |
1013 | result = slab_size(s1) < slab_size(s2); | |
8ff12cfc CL |
1014 | else if (sort_active) |
1015 | result = slab_activity(s1) < slab_activity(s2); | |
c09d8751 CL |
1016 | else |
1017 | result = strcasecmp(s1->name, s2->name); | |
1018 | ||
1019 | if (show_inverted) | |
1020 | result = -result; | |
1021 | ||
1022 | if (result > 0) { | |
1023 | struct slabinfo t; | |
1024 | ||
1025 | memcpy(&t, s1, sizeof(struct slabinfo)); | |
1026 | memcpy(s1, s2, sizeof(struct slabinfo)); | |
1027 | memcpy(s2, &t, sizeof(struct slabinfo)); | |
1028 | } | |
1029 | } | |
1030 | } | |
1031 | } | |
1032 | ||
b7ed698c | 1033 | static void sort_aliases(void) |
c09d8751 CL |
1034 | { |
1035 | struct aliasinfo *a1,*a2; | |
1036 | ||
1037 | for (a1 = aliasinfo; a1 < aliasinfo + aliases; a1++) { | |
1038 | for (a2 = a1 + 1; a2 < aliasinfo + aliases; a2++) { | |
1039 | char *n1, *n2; | |
1040 | ||
1041 | n1 = a1->name; | |
1042 | n2 = a2->name; | |
1043 | if (show_alias && !show_inverted) { | |
1044 | n1 = a1->ref; | |
1045 | n2 = a2->ref; | |
1046 | } | |
1047 | if (strcasecmp(n1, n2) > 0) { | |
1048 | struct aliasinfo t; | |
1049 | ||
1050 | memcpy(&t, a1, sizeof(struct aliasinfo)); | |
1051 | memcpy(a1, a2, sizeof(struct aliasinfo)); | |
1052 | memcpy(a2, &t, sizeof(struct aliasinfo)); | |
1053 | } | |
1054 | } | |
1055 | } | |
1056 | } | |
1057 | ||
b7ed698c | 1058 | static void link_slabs(void) |
c09d8751 CL |
1059 | { |
1060 | struct aliasinfo *a; | |
1061 | struct slabinfo *s; | |
1062 | ||
1063 | for (a = aliasinfo; a < aliasinfo + aliases; a++) { | |
1064 | ||
a87615b8 | 1065 | for (s = slabinfo; s < slabinfo + slabs; s++) |
c09d8751 CL |
1066 | if (strcmp(a->ref, s->name) == 0) { |
1067 | a->slab = s; | |
1068 | s->refs++; | |
1069 | break; | |
1070 | } | |
1071 | if (s == slabinfo + slabs) | |
1072 | fatal("Unresolved alias %s\n", a->ref); | |
1073 | } | |
1074 | } | |
1075 | ||
b7ed698c | 1076 | static void alias(void) |
c09d8751 CL |
1077 | { |
1078 | struct aliasinfo *a; | |
1079 | char *active = NULL; | |
1080 | ||
1081 | sort_aliases(); | |
1082 | link_slabs(); | |
1083 | ||
1084 | for(a = aliasinfo; a < aliasinfo + aliases; a++) { | |
1085 | ||
1086 | if (!show_single_ref && a->slab->refs == 1) | |
1087 | continue; | |
1088 | ||
1089 | if (!show_inverted) { | |
1090 | if (active) { | |
1091 | if (strcmp(a->slab->name, active) == 0) { | |
1092 | printf(" %s", a->name); | |
1093 | continue; | |
1094 | } | |
1095 | } | |
a87615b8 | 1096 | printf("\n%-12s <- %s", a->slab->name, a->name); |
c09d8751 CL |
1097 | active = a->slab->name; |
1098 | } | |
1099 | else | |
1100 | printf("%-20s -> %s\n", a->name, a->slab->name); | |
1101 | } | |
1102 | if (active) | |
1103 | printf("\n"); | |
1104 | } | |
1105 | ||
1106 | ||
b7ed698c | 1107 | static void rename_slabs(void) |
c09d8751 CL |
1108 | { |
1109 | struct slabinfo *s; | |
1110 | struct aliasinfo *a; | |
1111 | ||
1112 | for (s = slabinfo; s < slabinfo + slabs; s++) { | |
1113 | if (*s->name != ':') | |
1114 | continue; | |
1115 | ||
1116 | if (s->refs > 1 && !show_first_alias) | |
1117 | continue; | |
1118 | ||
1119 | a = find_one_alias(s); | |
1120 | ||
a87615b8 CL |
1121 | if (a) |
1122 | s->name = a->name; | |
1123 | else { | |
1124 | s->name = "*"; | |
1125 | actual_slabs--; | |
1126 | } | |
c09d8751 CL |
1127 | } |
1128 | } | |
1129 | ||
b7ed698c | 1130 | static int slab_mismatch(char *slab) |
c09d8751 CL |
1131 | { |
1132 | return regexec(&pattern, slab, 0, NULL, 0); | |
1133 | } | |
1134 | ||
b7ed698c | 1135 | static void read_slab_dir(void) |
c09d8751 CL |
1136 | { |
1137 | DIR *dir; | |
1138 | struct dirent *de; | |
1139 | struct slabinfo *slab = slabinfo; | |
1140 | struct aliasinfo *alias = aliasinfo; | |
1141 | char *p; | |
1142 | char *t; | |
1143 | int count; | |
1144 | ||
b6c24de7 | 1145 | if (chdir("/sys/kernel/slab") && chdir("/sys/slab")) |
a87615b8 CL |
1146 | fatal("SYSFS support for SLUB not active\n"); |
1147 | ||
c09d8751 CL |
1148 | dir = opendir("."); |
1149 | while ((de = readdir(dir))) { | |
1150 | if (de->d_name[0] == '.' || | |
a87615b8 CL |
1151 | (de->d_name[0] != ':' && slab_mismatch(de->d_name))) |
1152 | continue; | |
c09d8751 CL |
1153 | switch (de->d_type) { |
1154 | case DT_LNK: | |
0d24db33 | 1155 | alias->name = strdup(de->d_name); |
fe353178 | 1156 | count = readlink(de->d_name, buffer, sizeof(buffer)-1); |
c09d8751 CL |
1157 | |
1158 | if (count < 0) | |
1159 | fatal("Cannot read symlink %s\n", de->d_name); | |
1160 | ||
1161 | buffer[count] = 0; | |
1162 | p = buffer + count; | |
1163 | while (p > buffer && p[-1] != '/') | |
1164 | p--; | |
1165 | alias->ref = strdup(p); | |
1166 | alias++; | |
1167 | break; | |
1168 | case DT_DIR: | |
1169 | if (chdir(de->d_name)) | |
1170 | fatal("Unable to access slab %s\n", slab->name); | |
0d24db33 | 1171 | slab->name = strdup(de->d_name); |
c09d8751 CL |
1172 | slab->alias = 0; |
1173 | slab->refs = 0; | |
1174 | slab->aliases = get_obj("aliases"); | |
1175 | slab->align = get_obj("align"); | |
1176 | slab->cache_dma = get_obj("cache_dma"); | |
1177 | slab->cpu_slabs = get_obj("cpu_slabs"); | |
1178 | slab->destroy_by_rcu = get_obj("destroy_by_rcu"); | |
1179 | slab->hwcache_align = get_obj("hwcache_align"); | |
1180 | slab->object_size = get_obj("object_size"); | |
1181 | slab->objects = get_obj("objects"); | |
205ab99d CL |
1182 | slab->objects_partial = get_obj("objects_partial"); |
1183 | slab->objects_total = get_obj("objects_total"); | |
c09d8751 CL |
1184 | slab->objs_per_slab = get_obj("objs_per_slab"); |
1185 | slab->order = get_obj("order"); | |
1186 | slab->partial = get_obj("partial"); | |
1187 | slab->partial = get_obj_and_str("partial", &t); | |
1188 | decode_numa_list(slab->numa_partial, t); | |
f32143a2 | 1189 | free(t); |
c09d8751 CL |
1190 | slab->poison = get_obj("poison"); |
1191 | slab->reclaim_account = get_obj("reclaim_account"); | |
1192 | slab->red_zone = get_obj("red_zone"); | |
1193 | slab->sanity_checks = get_obj("sanity_checks"); | |
1194 | slab->slab_size = get_obj("slab_size"); | |
1195 | slab->slabs = get_obj_and_str("slabs", &t); | |
1196 | decode_numa_list(slab->numa, t); | |
f32143a2 | 1197 | free(t); |
c09d8751 CL |
1198 | slab->store_user = get_obj("store_user"); |
1199 | slab->trace = get_obj("trace"); | |
8ff12cfc CL |
1200 | slab->alloc_fastpath = get_obj("alloc_fastpath"); |
1201 | slab->alloc_slowpath = get_obj("alloc_slowpath"); | |
1202 | slab->free_fastpath = get_obj("free_fastpath"); | |
1203 | slab->free_slowpath = get_obj("free_slowpath"); | |
1204 | slab->free_frozen= get_obj("free_frozen"); | |
1205 | slab->free_add_partial = get_obj("free_add_partial"); | |
1206 | slab->free_remove_partial = get_obj("free_remove_partial"); | |
1207 | slab->alloc_from_partial = get_obj("alloc_from_partial"); | |
1208 | slab->alloc_slab = get_obj("alloc_slab"); | |
1209 | slab->alloc_refill = get_obj("alloc_refill"); | |
1210 | slab->free_slab = get_obj("free_slab"); | |
1211 | slab->cpuslab_flush = get_obj("cpuslab_flush"); | |
1212 | slab->deactivate_full = get_obj("deactivate_full"); | |
1213 | slab->deactivate_empty = get_obj("deactivate_empty"); | |
1214 | slab->deactivate_to_head = get_obj("deactivate_to_head"); | |
1215 | slab->deactivate_to_tail = get_obj("deactivate_to_tail"); | |
1216 | slab->deactivate_remote_frees = get_obj("deactivate_remote_frees"); | |
f715e6f1 | 1217 | slab->order_fallback = get_obj("order_fallback"); |
9da4714a CL |
1218 | slab->cmpxchg_double_cpu_fail = get_obj("cmpxchg_double_cpu_fail"); |
1219 | slab->cmpxchg_double_fail = get_obj("cmpxchg_double_fail"); | |
aca726a0 CL |
1220 | slab->cpu_partial_alloc = get_obj("cpu_partial_alloc"); |
1221 | slab->cpu_partial_free = get_obj("cpu_partial_free"); | |
9da4714a CL |
1222 | slab->alloc_node_mismatch = get_obj("alloc_node_mismatch"); |
1223 | slab->deactivate_bypass = get_obj("deactivate_bypass"); | |
c09d8751 CL |
1224 | chdir(".."); |
1225 | if (slab->name[0] == ':') | |
1226 | alias_targets++; | |
1227 | slab++; | |
1228 | break; | |
1229 | default : | |
1230 | fatal("Unknown file type %lx\n", de->d_type); | |
1231 | } | |
1232 | } | |
1233 | closedir(dir); | |
1234 | slabs = slab - slabinfo; | |
a87615b8 | 1235 | actual_slabs = slabs; |
c09d8751 CL |
1236 | aliases = alias - aliasinfo; |
1237 | if (slabs > MAX_SLABS) | |
1238 | fatal("Too many slabs\n"); | |
1239 | if (aliases > MAX_ALIASES) | |
1240 | fatal("Too many aliases\n"); | |
1241 | } | |
1242 | ||
b7ed698c | 1243 | static void output_slabs(void) |
c09d8751 CL |
1244 | { |
1245 | struct slabinfo *slab; | |
1246 | ||
4980a963 SS |
1247 | for (slab = slabinfo; (slab < slabinfo + slabs) && |
1248 | output_lines != 0; slab++) { | |
c09d8751 CL |
1249 | |
1250 | if (slab->alias) | |
1251 | continue; | |
1252 | ||
4980a963 SS |
1253 | if (output_lines != -1) |
1254 | output_lines--; | |
c09d8751 CL |
1255 | |
1256 | if (show_numa) | |
a87615b8 CL |
1257 | slab_numa(slab, 0); |
1258 | else if (show_track) | |
c09d8751 | 1259 | show_tracking(slab); |
a87615b8 | 1260 | else if (validate) |
c09d8751 | 1261 | slab_validate(slab); |
a87615b8 | 1262 | else if (shrink) |
c09d8751 | 1263 | slab_shrink(slab); |
a87615b8 CL |
1264 | else if (set_debug) |
1265 | slab_debug(slab); | |
1266 | else if (show_ops) | |
1267 | ops(slab); | |
1268 | else if (show_slab) | |
1269 | slabcache(slab); | |
eefaca9c CL |
1270 | else if (show_report) |
1271 | report(slab); | |
c09d8751 CL |
1272 | } |
1273 | } | |
1274 | ||
1275 | struct option opts[] = { | |
2b100755 SS |
1276 | { "aliases", no_argument, NULL, 'a' }, |
1277 | { "activity", no_argument, NULL, 'A' }, | |
1278 | { "debug", optional_argument, NULL, 'd' }, | |
1279 | { "display-activity", no_argument, NULL, 'D' }, | |
1280 | { "empty", no_argument, NULL, 'e' }, | |
1281 | { "first-alias", no_argument, NULL, 'f' }, | |
1282 | { "help", no_argument, NULL, 'h' }, | |
1283 | { "inverted", no_argument, NULL, 'i'}, | |
1284 | { "numa", no_argument, NULL, 'n' }, | |
1285 | { "ops", no_argument, NULL, 'o' }, | |
1286 | { "report", no_argument, NULL, 'r' }, | |
1287 | { "shrink", no_argument, NULL, 's' }, | |
1288 | { "slabs", no_argument, NULL, 'l' }, | |
1289 | { "track", no_argument, NULL, 't'}, | |
1290 | { "validate", no_argument, NULL, 'v' }, | |
1291 | { "zero", no_argument, NULL, 'z' }, | |
1292 | { "1ref", no_argument, NULL, '1'}, | |
4980a963 | 1293 | { "lines", required_argument, NULL, 'N'}, |
c09d8751 CL |
1294 | { NULL, 0, NULL, 0 } |
1295 | }; | |
1296 | ||
1297 | int main(int argc, char *argv[]) | |
1298 | { | |
1299 | int c; | |
1300 | int err; | |
1301 | char *pattern_source; | |
1302 | ||
1303 | page_size = getpagesize(); | |
c09d8751 | 1304 | |
4980a963 | 1305 | while ((c = getopt_long(argc, argv, "aAd::Defhil1noprstvzTSN:", |
a87615b8 | 1306 | opts, NULL)) != -1) |
f32143a2 | 1307 | switch (c) { |
c09d8751 CL |
1308 | case '1': |
1309 | show_single_ref = 1; | |
1310 | break; | |
1311 | case 'a': | |
1312 | show_alias = 1; | |
1313 | break; | |
8ff12cfc CL |
1314 | case 'A': |
1315 | sort_active = 1; | |
1316 | break; | |
a87615b8 CL |
1317 | case 'd': |
1318 | set_debug = 1; | |
1319 | if (!debug_opt_scan(optarg)) | |
1320 | fatal("Invalid debug option '%s'\n", optarg); | |
1321 | break; | |
8ff12cfc CL |
1322 | case 'D': |
1323 | show_activity = 1; | |
1324 | break; | |
a87615b8 CL |
1325 | case 'e': |
1326 | show_empty = 1; | |
1327 | break; | |
c09d8751 CL |
1328 | case 'f': |
1329 | show_first_alias = 1; | |
1330 | break; | |
1331 | case 'h': | |
1332 | usage(); | |
1333 | return 0; | |
1334 | case 'i': | |
1335 | show_inverted = 1; | |
1336 | break; | |
1337 | case 'n': | |
1338 | show_numa = 1; | |
1339 | break; | |
a87615b8 CL |
1340 | case 'o': |
1341 | show_ops = 1; | |
1342 | break; | |
1343 | case 'r': | |
1344 | show_report = 1; | |
1345 | break; | |
c09d8751 CL |
1346 | case 's': |
1347 | shrink = 1; | |
1348 | break; | |
1349 | case 'l': | |
1350 | show_slab = 1; | |
1351 | break; | |
1352 | case 't': | |
1353 | show_track = 1; | |
1354 | break; | |
1355 | case 'v': | |
1356 | validate = 1; | |
1357 | break; | |
1358 | case 'z': | |
1359 | skip_zero = 0; | |
1360 | break; | |
1361 | case 'T': | |
1362 | show_totals = 1; | |
1363 | break; | |
1364 | case 'S': | |
1365 | sort_size = 1; | |
1366 | break; | |
4980a963 SS |
1367 | case 'N': |
1368 | if (optarg) { | |
1369 | output_lines = atoi(optarg); | |
1370 | if (output_lines < 1) | |
1371 | output_lines = 1; | |
1372 | } | |
1373 | break; | |
c09d8751 CL |
1374 | default: |
1375 | fatal("%s: Invalid option '%c'\n", argv[0], optopt); | |
1376 | ||
1377 | } | |
1378 | ||
a87615b8 CL |
1379 | if (!show_slab && !show_alias && !show_track && !show_report |
1380 | && !validate && !shrink && !set_debug && !show_ops) | |
c09d8751 CL |
1381 | show_slab = 1; |
1382 | ||
1383 | if (argc > optind) | |
1384 | pattern_source = argv[optind]; | |
1385 | else | |
1386 | pattern_source = ".*"; | |
1387 | ||
1388 | err = regcomp(&pattern, pattern_source, REG_ICASE|REG_NOSUB); | |
1389 | if (err) | |
1390 | fatal("%s: Invalid pattern '%s' code %d\n", | |
1391 | argv[0], pattern_source, err); | |
1392 | read_slab_dir(); | |
1393 | if (show_alias) | |
1394 | alias(); | |
1395 | else | |
1396 | if (show_totals) | |
1397 | totals(); | |
1398 | else { | |
1399 | link_slabs(); | |
1400 | rename_slabs(); | |
1401 | sort_slabs(); | |
1402 | output_slabs(); | |
1403 | } | |
1404 | return 0; | |
1405 | } |