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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
ba77c9e1 LZ |
2 | #include "builtin.h" |
3 | #include "perf.h" | |
4 | ||
0f7d2f1b | 5 | #include "util/evlist.h" |
fcf65bf1 | 6 | #include "util/evsel.h" |
ba77c9e1 | 7 | #include "util/util.h" |
41840d21 | 8 | #include "util/config.h" |
1101f69a | 9 | #include "util/map.h" |
ba77c9e1 LZ |
10 | #include "util/symbol.h" |
11 | #include "util/thread.h" | |
12 | #include "util/header.h" | |
94c744b6 | 13 | #include "util/session.h" |
45694aa7 | 14 | #include "util/tool.h" |
c9758cc4 | 15 | #include "util/callchain.h" |
2a865bd8 | 16 | #include "util/time-utils.h" |
ba77c9e1 | 17 | |
4b6ab94e | 18 | #include <subcmd/parse-options.h> |
ba77c9e1 | 19 | #include "util/trace-event.h" |
f5fc1412 | 20 | #include "util/data.h" |
4b627957 | 21 | #include "util/cpumap.h" |
ba77c9e1 LZ |
22 | |
23 | #include "util/debug.h" | |
ba77c9e1 | 24 | |
877a7a11 | 25 | #include <linux/kernel.h> |
ba77c9e1 | 26 | #include <linux/rbtree.h> |
8d9233f2 | 27 | #include <linux/string.h> |
a43783ae | 28 | #include <errno.h> |
fd20e811 | 29 | #include <inttypes.h> |
77cfe388 | 30 | #include <locale.h> |
c9758cc4 | 31 | #include <regex.h> |
ba77c9e1 | 32 | |
3d689ed6 ACM |
33 | #include "sane_ctype.h" |
34 | ||
0d68bc92 NK |
35 | static int kmem_slab; |
36 | static int kmem_page; | |
37 | ||
38 | static long kmem_page_size; | |
0c160d49 NK |
39 | static enum { |
40 | KMEM_SLAB, | |
41 | KMEM_PAGE, | |
42 | } kmem_default = KMEM_SLAB; /* for backward compatibility */ | |
0d68bc92 | 43 | |
ba77c9e1 | 44 | struct alloc_stat; |
fb4f313d | 45 | typedef int (*sort_fn_t)(void *, void *); |
ba77c9e1 | 46 | |
ba77c9e1 LZ |
47 | static int alloc_flag; |
48 | static int caller_flag; | |
49 | ||
ba77c9e1 LZ |
50 | static int alloc_lines = -1; |
51 | static int caller_lines = -1; | |
52 | ||
7707b6b6 LZ |
53 | static bool raw_ip; |
54 | ||
ba77c9e1 | 55 | struct alloc_stat { |
079d3f65 LZ |
56 | u64 call_site; |
57 | u64 ptr; | |
ba77c9e1 LZ |
58 | u64 bytes_req; |
59 | u64 bytes_alloc; | |
aa58e9af | 60 | u64 last_alloc; |
ba77c9e1 | 61 | u32 hit; |
079d3f65 LZ |
62 | u32 pingpong; |
63 | ||
64 | short alloc_cpu; | |
ba77c9e1 LZ |
65 | |
66 | struct rb_node node; | |
67 | }; | |
68 | ||
69 | static struct rb_root root_alloc_stat; | |
70 | static struct rb_root root_alloc_sorted; | |
71 | static struct rb_root root_caller_stat; | |
72 | static struct rb_root root_caller_sorted; | |
73 | ||
aa58e9af | 74 | static unsigned long total_requested, total_allocated, total_freed; |
7d0d3945 | 75 | static unsigned long nr_allocs, nr_cross_allocs; |
ba77c9e1 | 76 | |
2a865bd8 DA |
77 | /* filters for controlling start and stop of time of analysis */ |
78 | static struct perf_time_interval ptime; | |
79 | const char *time_str; | |
80 | ||
2814eb05 ACM |
81 | static int insert_alloc_stat(unsigned long call_site, unsigned long ptr, |
82 | int bytes_req, int bytes_alloc, int cpu) | |
ba77c9e1 LZ |
83 | { |
84 | struct rb_node **node = &root_alloc_stat.rb_node; | |
85 | struct rb_node *parent = NULL; | |
86 | struct alloc_stat *data = NULL; | |
87 | ||
ba77c9e1 LZ |
88 | while (*node) { |
89 | parent = *node; | |
90 | data = rb_entry(*node, struct alloc_stat, node); | |
91 | ||
92 | if (ptr > data->ptr) | |
93 | node = &(*node)->rb_right; | |
94 | else if (ptr < data->ptr) | |
95 | node = &(*node)->rb_left; | |
96 | else | |
97 | break; | |
98 | } | |
99 | ||
100 | if (data && data->ptr == ptr) { | |
101 | data->hit++; | |
102 | data->bytes_req += bytes_req; | |
4efb5290 | 103 | data->bytes_alloc += bytes_alloc; |
ba77c9e1 LZ |
104 | } else { |
105 | data = malloc(sizeof(*data)); | |
2814eb05 ACM |
106 | if (!data) { |
107 | pr_err("%s: malloc failed\n", __func__); | |
108 | return -1; | |
109 | } | |
ba77c9e1 | 110 | data->ptr = ptr; |
079d3f65 | 111 | data->pingpong = 0; |
ba77c9e1 LZ |
112 | data->hit = 1; |
113 | data->bytes_req = bytes_req; | |
114 | data->bytes_alloc = bytes_alloc; | |
115 | ||
116 | rb_link_node(&data->node, parent, node); | |
117 | rb_insert_color(&data->node, &root_alloc_stat); | |
118 | } | |
079d3f65 LZ |
119 | data->call_site = call_site; |
120 | data->alloc_cpu = cpu; | |
aa58e9af DA |
121 | data->last_alloc = bytes_alloc; |
122 | ||
2814eb05 | 123 | return 0; |
ba77c9e1 LZ |
124 | } |
125 | ||
2814eb05 | 126 | static int insert_caller_stat(unsigned long call_site, |
ba77c9e1 LZ |
127 | int bytes_req, int bytes_alloc) |
128 | { | |
129 | struct rb_node **node = &root_caller_stat.rb_node; | |
130 | struct rb_node *parent = NULL; | |
131 | struct alloc_stat *data = NULL; | |
132 | ||
ba77c9e1 LZ |
133 | while (*node) { |
134 | parent = *node; | |
135 | data = rb_entry(*node, struct alloc_stat, node); | |
136 | ||
137 | if (call_site > data->call_site) | |
138 | node = &(*node)->rb_right; | |
139 | else if (call_site < data->call_site) | |
140 | node = &(*node)->rb_left; | |
141 | else | |
142 | break; | |
143 | } | |
144 | ||
145 | if (data && data->call_site == call_site) { | |
146 | data->hit++; | |
147 | data->bytes_req += bytes_req; | |
4efb5290 | 148 | data->bytes_alloc += bytes_alloc; |
ba77c9e1 LZ |
149 | } else { |
150 | data = malloc(sizeof(*data)); | |
2814eb05 ACM |
151 | if (!data) { |
152 | pr_err("%s: malloc failed\n", __func__); | |
153 | return -1; | |
154 | } | |
ba77c9e1 | 155 | data->call_site = call_site; |
079d3f65 | 156 | data->pingpong = 0; |
ba77c9e1 LZ |
157 | data->hit = 1; |
158 | data->bytes_req = bytes_req; | |
159 | data->bytes_alloc = bytes_alloc; | |
160 | ||
161 | rb_link_node(&data->node, parent, node); | |
162 | rb_insert_color(&data->node, &root_caller_stat); | |
163 | } | |
2814eb05 ACM |
164 | |
165 | return 0; | |
ba77c9e1 LZ |
166 | } |
167 | ||
2814eb05 | 168 | static int perf_evsel__process_alloc_event(struct perf_evsel *evsel, |
0f7d2f1b | 169 | struct perf_sample *sample) |
ba77c9e1 | 170 | { |
0f7d2f1b ACM |
171 | unsigned long ptr = perf_evsel__intval(evsel, sample, "ptr"), |
172 | call_site = perf_evsel__intval(evsel, sample, "call_site"); | |
173 | int bytes_req = perf_evsel__intval(evsel, sample, "bytes_req"), | |
174 | bytes_alloc = perf_evsel__intval(evsel, sample, "bytes_alloc"); | |
175 | ||
176 | if (insert_alloc_stat(call_site, ptr, bytes_req, bytes_alloc, sample->cpu) || | |
2814eb05 ACM |
177 | insert_caller_stat(call_site, bytes_req, bytes_alloc)) |
178 | return -1; | |
ba77c9e1 LZ |
179 | |
180 | total_requested += bytes_req; | |
181 | total_allocated += bytes_alloc; | |
7d0d3945 | 182 | |
0f7d2f1b ACM |
183 | nr_allocs++; |
184 | return 0; | |
185 | } | |
186 | ||
187 | static int perf_evsel__process_alloc_node_event(struct perf_evsel *evsel, | |
188 | struct perf_sample *sample) | |
189 | { | |
190 | int ret = perf_evsel__process_alloc_event(evsel, sample); | |
191 | ||
192 | if (!ret) { | |
4b627957 | 193 | int node1 = cpu__get_node(sample->cpu), |
0f7d2f1b ACM |
194 | node2 = perf_evsel__intval(evsel, sample, "node"); |
195 | ||
7d0d3945 LZ |
196 | if (node1 != node2) |
197 | nr_cross_allocs++; | |
198 | } | |
0f7d2f1b ACM |
199 | |
200 | return ret; | |
ba77c9e1 LZ |
201 | } |
202 | ||
fb4f313d NK |
203 | static int ptr_cmp(void *, void *); |
204 | static int slab_callsite_cmp(void *, void *); | |
079d3f65 LZ |
205 | |
206 | static struct alloc_stat *search_alloc_stat(unsigned long ptr, | |
207 | unsigned long call_site, | |
208 | struct rb_root *root, | |
209 | sort_fn_t sort_fn) | |
210 | { | |
211 | struct rb_node *node = root->rb_node; | |
212 | struct alloc_stat key = { .ptr = ptr, .call_site = call_site }; | |
213 | ||
214 | while (node) { | |
215 | struct alloc_stat *data; | |
216 | int cmp; | |
217 | ||
218 | data = rb_entry(node, struct alloc_stat, node); | |
219 | ||
220 | cmp = sort_fn(&key, data); | |
221 | if (cmp < 0) | |
222 | node = node->rb_left; | |
223 | else if (cmp > 0) | |
224 | node = node->rb_right; | |
225 | else | |
226 | return data; | |
227 | } | |
228 | return NULL; | |
229 | } | |
230 | ||
2814eb05 ACM |
231 | static int perf_evsel__process_free_event(struct perf_evsel *evsel, |
232 | struct perf_sample *sample) | |
ba77c9e1 | 233 | { |
0f7d2f1b | 234 | unsigned long ptr = perf_evsel__intval(evsel, sample, "ptr"); |
079d3f65 LZ |
235 | struct alloc_stat *s_alloc, *s_caller; |
236 | ||
079d3f65 LZ |
237 | s_alloc = search_alloc_stat(ptr, 0, &root_alloc_stat, ptr_cmp); |
238 | if (!s_alloc) | |
2814eb05 | 239 | return 0; |
079d3f65 | 240 | |
aa58e9af DA |
241 | total_freed += s_alloc->last_alloc; |
242 | ||
22ad798c | 243 | if ((short)sample->cpu != s_alloc->alloc_cpu) { |
079d3f65 LZ |
244 | s_alloc->pingpong++; |
245 | ||
246 | s_caller = search_alloc_stat(0, s_alloc->call_site, | |
fb4f313d NK |
247 | &root_caller_stat, |
248 | slab_callsite_cmp); | |
2814eb05 ACM |
249 | if (!s_caller) |
250 | return -1; | |
079d3f65 LZ |
251 | s_caller->pingpong++; |
252 | } | |
253 | s_alloc->alloc_cpu = -1; | |
2814eb05 ACM |
254 | |
255 | return 0; | |
ba77c9e1 LZ |
256 | } |
257 | ||
0d68bc92 NK |
258 | static u64 total_page_alloc_bytes; |
259 | static u64 total_page_free_bytes; | |
260 | static u64 total_page_nomatch_bytes; | |
261 | static u64 total_page_fail_bytes; | |
262 | static unsigned long nr_page_allocs; | |
263 | static unsigned long nr_page_frees; | |
264 | static unsigned long nr_page_fails; | |
265 | static unsigned long nr_page_nomatch; | |
266 | ||
267 | static bool use_pfn; | |
2a7ef02c | 268 | static bool live_page; |
c9758cc4 | 269 | static struct perf_session *kmem_session; |
0d68bc92 NK |
270 | |
271 | #define MAX_MIGRATE_TYPES 6 | |
272 | #define MAX_PAGE_ORDER 11 | |
273 | ||
274 | static int order_stats[MAX_PAGE_ORDER][MAX_MIGRATE_TYPES]; | |
275 | ||
276 | struct page_stat { | |
277 | struct rb_node node; | |
278 | u64 page; | |
c9758cc4 | 279 | u64 callsite; |
0d68bc92 NK |
280 | int order; |
281 | unsigned gfp_flags; | |
282 | unsigned migrate_type; | |
283 | u64 alloc_bytes; | |
284 | u64 free_bytes; | |
285 | int nr_alloc; | |
286 | int nr_free; | |
287 | }; | |
288 | ||
2a7ef02c | 289 | static struct rb_root page_live_tree; |
0d68bc92 NK |
290 | static struct rb_root page_alloc_tree; |
291 | static struct rb_root page_alloc_sorted; | |
c9758cc4 NK |
292 | static struct rb_root page_caller_tree; |
293 | static struct rb_root page_caller_sorted; | |
0d68bc92 | 294 | |
c9758cc4 NK |
295 | struct alloc_func { |
296 | u64 start; | |
297 | u64 end; | |
298 | char *name; | |
299 | }; | |
300 | ||
301 | static int nr_alloc_funcs; | |
302 | static struct alloc_func *alloc_func_list; | |
303 | ||
304 | static int funcmp(const void *a, const void *b) | |
305 | { | |
306 | const struct alloc_func *fa = a; | |
307 | const struct alloc_func *fb = b; | |
308 | ||
309 | if (fa->start > fb->start) | |
310 | return 1; | |
311 | else | |
312 | return -1; | |
313 | } | |
314 | ||
315 | static int callcmp(const void *a, const void *b) | |
316 | { | |
317 | const struct alloc_func *fa = a; | |
318 | const struct alloc_func *fb = b; | |
319 | ||
320 | if (fb->start <= fa->start && fa->end < fb->end) | |
321 | return 0; | |
322 | ||
323 | if (fa->start > fb->start) | |
324 | return 1; | |
325 | else | |
326 | return -1; | |
327 | } | |
328 | ||
329 | static int build_alloc_func_list(void) | |
330 | { | |
331 | int ret; | |
332 | struct map *kernel_map; | |
333 | struct symbol *sym; | |
334 | struct rb_node *node; | |
335 | struct alloc_func *func; | |
336 | struct machine *machine = &kmem_session->machines.host; | |
337 | regex_t alloc_func_regex; | |
49b8e2be | 338 | static const char pattern[] = "^_?_?(alloc|get_free|get_zeroed)_pages?"; |
c9758cc4 NK |
339 | |
340 | ret = regcomp(&alloc_func_regex, pattern, REG_EXTENDED); | |
341 | if (ret) { | |
342 | char err[BUFSIZ]; | |
343 | ||
344 | regerror(ret, &alloc_func_regex, err, sizeof(err)); | |
345 | pr_err("Invalid regex: %s\n%s", pattern, err); | |
346 | return -EINVAL; | |
347 | } | |
348 | ||
a5e813c6 | 349 | kernel_map = machine__kernel_map(machine); |
be39db9f | 350 | if (map__load(kernel_map) < 0) { |
c9758cc4 NK |
351 | pr_err("cannot load kernel map\n"); |
352 | return -ENOENT; | |
353 | } | |
354 | ||
355 | map__for_each_symbol(kernel_map, sym, node) { | |
356 | if (regexec(&alloc_func_regex, sym->name, 0, NULL, 0)) | |
357 | continue; | |
358 | ||
359 | func = realloc(alloc_func_list, | |
360 | (nr_alloc_funcs + 1) * sizeof(*func)); | |
361 | if (func == NULL) | |
362 | return -ENOMEM; | |
363 | ||
364 | pr_debug("alloc func: %s\n", sym->name); | |
365 | func[nr_alloc_funcs].start = sym->start; | |
366 | func[nr_alloc_funcs].end = sym->end; | |
367 | func[nr_alloc_funcs].name = sym->name; | |
368 | ||
369 | alloc_func_list = func; | |
370 | nr_alloc_funcs++; | |
371 | } | |
372 | ||
373 | qsort(alloc_func_list, nr_alloc_funcs, sizeof(*func), funcmp); | |
374 | ||
375 | regfree(&alloc_func_regex); | |
376 | return 0; | |
377 | } | |
378 | ||
379 | /* | |
380 | * Find first non-memory allocation function from callchain. | |
381 | * The allocation functions are in the 'alloc_func_list'. | |
382 | */ | |
383 | static u64 find_callsite(struct perf_evsel *evsel, struct perf_sample *sample) | |
384 | { | |
385 | struct addr_location al; | |
386 | struct machine *machine = &kmem_session->machines.host; | |
387 | struct callchain_cursor_node *node; | |
388 | ||
389 | if (alloc_func_list == NULL) { | |
390 | if (build_alloc_func_list() < 0) | |
391 | goto out; | |
392 | } | |
393 | ||
394 | al.thread = machine__findnew_thread(machine, sample->pid, sample->tid); | |
91d7b2de | 395 | sample__resolve_callchain(sample, &callchain_cursor, NULL, evsel, &al, 16); |
c9758cc4 NK |
396 | |
397 | callchain_cursor_commit(&callchain_cursor); | |
398 | while (true) { | |
399 | struct alloc_func key, *caller; | |
400 | u64 addr; | |
401 | ||
402 | node = callchain_cursor_current(&callchain_cursor); | |
403 | if (node == NULL) | |
404 | break; | |
405 | ||
406 | key.start = key.end = node->ip; | |
407 | caller = bsearch(&key, alloc_func_list, nr_alloc_funcs, | |
408 | sizeof(key), callcmp); | |
409 | if (!caller) { | |
410 | /* found */ | |
411 | if (node->map) | |
412 | addr = map__unmap_ip(node->map, node->ip); | |
413 | else | |
414 | addr = node->ip; | |
415 | ||
416 | return addr; | |
417 | } else | |
418 | pr_debug3("skipping alloc function: %s\n", caller->name); | |
419 | ||
420 | callchain_cursor_advance(&callchain_cursor); | |
421 | } | |
422 | ||
423 | out: | |
424 | pr_debug2("unknown callsite: %"PRIx64 "\n", sample->ip); | |
425 | return sample->ip; | |
426 | } | |
427 | ||
2a7ef02c NK |
428 | struct sort_dimension { |
429 | const char name[20]; | |
430 | sort_fn_t cmp; | |
431 | struct list_head list; | |
432 | }; | |
433 | ||
434 | static LIST_HEAD(page_alloc_sort_input); | |
435 | static LIST_HEAD(page_caller_sort_input); | |
436 | ||
c9758cc4 | 437 | static struct page_stat * |
2a7ef02c | 438 | __page_stat__findnew_page(struct page_stat *pstat, bool create) |
0d68bc92 | 439 | { |
2a7ef02c | 440 | struct rb_node **node = &page_live_tree.rb_node; |
0d68bc92 NK |
441 | struct rb_node *parent = NULL; |
442 | struct page_stat *data; | |
443 | ||
444 | while (*node) { | |
445 | s64 cmp; | |
446 | ||
447 | parent = *node; | |
448 | data = rb_entry(*node, struct page_stat, node); | |
449 | ||
2a7ef02c | 450 | cmp = data->page - pstat->page; |
0d68bc92 NK |
451 | if (cmp < 0) |
452 | node = &parent->rb_left; | |
453 | else if (cmp > 0) | |
454 | node = &parent->rb_right; | |
455 | else | |
456 | return data; | |
457 | } | |
458 | ||
459 | if (!create) | |
460 | return NULL; | |
461 | ||
462 | data = zalloc(sizeof(*data)); | |
463 | if (data != NULL) { | |
2a7ef02c NK |
464 | data->page = pstat->page; |
465 | data->order = pstat->order; | |
466 | data->gfp_flags = pstat->gfp_flags; | |
467 | data->migrate_type = pstat->migrate_type; | |
0d68bc92 NK |
468 | |
469 | rb_link_node(&data->node, parent, node); | |
2a7ef02c | 470 | rb_insert_color(&data->node, &page_live_tree); |
0d68bc92 NK |
471 | } |
472 | ||
473 | return data; | |
474 | } | |
475 | ||
2a7ef02c | 476 | static struct page_stat *page_stat__find_page(struct page_stat *pstat) |
c9758cc4 | 477 | { |
2a7ef02c | 478 | return __page_stat__findnew_page(pstat, false); |
c9758cc4 NK |
479 | } |
480 | ||
2a7ef02c | 481 | static struct page_stat *page_stat__findnew_page(struct page_stat *pstat) |
c9758cc4 | 482 | { |
2a7ef02c | 483 | return __page_stat__findnew_page(pstat, true); |
c9758cc4 NK |
484 | } |
485 | ||
c9758cc4 NK |
486 | static struct page_stat * |
487 | __page_stat__findnew_alloc(struct page_stat *pstat, bool create) | |
0d68bc92 NK |
488 | { |
489 | struct rb_node **node = &page_alloc_tree.rb_node; | |
490 | struct rb_node *parent = NULL; | |
491 | struct page_stat *data; | |
fb4f313d | 492 | struct sort_dimension *sort; |
0d68bc92 NK |
493 | |
494 | while (*node) { | |
fb4f313d | 495 | int cmp = 0; |
0d68bc92 NK |
496 | |
497 | parent = *node; | |
498 | data = rb_entry(*node, struct page_stat, node); | |
499 | ||
fb4f313d NK |
500 | list_for_each_entry(sort, &page_alloc_sort_input, list) { |
501 | cmp = sort->cmp(pstat, data); | |
502 | if (cmp) | |
503 | break; | |
504 | } | |
505 | ||
0d68bc92 NK |
506 | if (cmp < 0) |
507 | node = &parent->rb_left; | |
508 | else if (cmp > 0) | |
509 | node = &parent->rb_right; | |
510 | else | |
511 | return data; | |
512 | } | |
513 | ||
514 | if (!create) | |
515 | return NULL; | |
516 | ||
517 | data = zalloc(sizeof(*data)); | |
518 | if (data != NULL) { | |
6b1a2752 DA |
519 | data->page = pstat->page; |
520 | data->order = pstat->order; | |
521 | data->gfp_flags = pstat->gfp_flags; | |
522 | data->migrate_type = pstat->migrate_type; | |
0d68bc92 NK |
523 | |
524 | rb_link_node(&data->node, parent, node); | |
525 | rb_insert_color(&data->node, &page_alloc_tree); | |
526 | } | |
527 | ||
528 | return data; | |
529 | } | |
530 | ||
c9758cc4 NK |
531 | static struct page_stat *page_stat__find_alloc(struct page_stat *pstat) |
532 | { | |
533 | return __page_stat__findnew_alloc(pstat, false); | |
534 | } | |
535 | ||
536 | static struct page_stat *page_stat__findnew_alloc(struct page_stat *pstat) | |
537 | { | |
538 | return __page_stat__findnew_alloc(pstat, true); | |
539 | } | |
540 | ||
541 | static struct page_stat * | |
fb4f313d | 542 | __page_stat__findnew_caller(struct page_stat *pstat, bool create) |
c9758cc4 NK |
543 | { |
544 | struct rb_node **node = &page_caller_tree.rb_node; | |
545 | struct rb_node *parent = NULL; | |
546 | struct page_stat *data; | |
fb4f313d | 547 | struct sort_dimension *sort; |
c9758cc4 NK |
548 | |
549 | while (*node) { | |
fb4f313d | 550 | int cmp = 0; |
c9758cc4 NK |
551 | |
552 | parent = *node; | |
553 | data = rb_entry(*node, struct page_stat, node); | |
554 | ||
fb4f313d NK |
555 | list_for_each_entry(sort, &page_caller_sort_input, list) { |
556 | cmp = sort->cmp(pstat, data); | |
557 | if (cmp) | |
558 | break; | |
559 | } | |
560 | ||
c9758cc4 NK |
561 | if (cmp < 0) |
562 | node = &parent->rb_left; | |
563 | else if (cmp > 0) | |
564 | node = &parent->rb_right; | |
565 | else | |
566 | return data; | |
567 | } | |
568 | ||
569 | if (!create) | |
570 | return NULL; | |
571 | ||
572 | data = zalloc(sizeof(*data)); | |
573 | if (data != NULL) { | |
fb4f313d NK |
574 | data->callsite = pstat->callsite; |
575 | data->order = pstat->order; | |
576 | data->gfp_flags = pstat->gfp_flags; | |
577 | data->migrate_type = pstat->migrate_type; | |
c9758cc4 NK |
578 | |
579 | rb_link_node(&data->node, parent, node); | |
580 | rb_insert_color(&data->node, &page_caller_tree); | |
581 | } | |
582 | ||
583 | return data; | |
584 | } | |
585 | ||
fb4f313d | 586 | static struct page_stat *page_stat__find_caller(struct page_stat *pstat) |
c9758cc4 | 587 | { |
fb4f313d | 588 | return __page_stat__findnew_caller(pstat, false); |
c9758cc4 NK |
589 | } |
590 | ||
fb4f313d | 591 | static struct page_stat *page_stat__findnew_caller(struct page_stat *pstat) |
c9758cc4 | 592 | { |
fb4f313d | 593 | return __page_stat__findnew_caller(pstat, true); |
c9758cc4 NK |
594 | } |
595 | ||
0d68bc92 NK |
596 | static bool valid_page(u64 pfn_or_page) |
597 | { | |
598 | if (use_pfn && pfn_or_page == -1UL) | |
599 | return false; | |
600 | if (!use_pfn && pfn_or_page == 0) | |
601 | return false; | |
602 | return true; | |
603 | } | |
604 | ||
0e111156 NK |
605 | struct gfp_flag { |
606 | unsigned int flags; | |
607 | char *compact_str; | |
608 | char *human_readable; | |
609 | }; | |
610 | ||
611 | static struct gfp_flag *gfps; | |
612 | static int nr_gfps; | |
613 | ||
614 | static int gfpcmp(const void *a, const void *b) | |
615 | { | |
616 | const struct gfp_flag *fa = a; | |
617 | const struct gfp_flag *fb = b; | |
618 | ||
619 | return fa->flags - fb->flags; | |
620 | } | |
621 | ||
420adbe9 | 622 | /* see include/trace/events/mmflags.h */ |
0e111156 NK |
623 | static const struct { |
624 | const char *original; | |
625 | const char *compact; | |
626 | } gfp_compact_table[] = { | |
627 | { "GFP_TRANSHUGE", "THP" }, | |
25160354 | 628 | { "GFP_TRANSHUGE_LIGHT", "THL" }, |
0e111156 NK |
629 | { "GFP_HIGHUSER_MOVABLE", "HUM" }, |
630 | { "GFP_HIGHUSER", "HU" }, | |
631 | { "GFP_USER", "U" }, | |
14e0a214 | 632 | { "GFP_KERNEL_ACCOUNT", "KAC" }, |
0e111156 NK |
633 | { "GFP_KERNEL", "K" }, |
634 | { "GFP_NOFS", "NF" }, | |
635 | { "GFP_ATOMIC", "A" }, | |
636 | { "GFP_NOIO", "NI" }, | |
0e111156 | 637 | { "GFP_NOWAIT", "NW" }, |
14e0a214 VB |
638 | { "GFP_DMA", "D" }, |
639 | { "__GFP_HIGHMEM", "HM" }, | |
640 | { "GFP_DMA32", "D32" }, | |
641 | { "__GFP_HIGH", "H" }, | |
642 | { "__GFP_ATOMIC", "_A" }, | |
643 | { "__GFP_IO", "I" }, | |
644 | { "__GFP_FS", "F" }, | |
14e0a214 | 645 | { "__GFP_NOWARN", "NWR" }, |
dcda9b04 | 646 | { "__GFP_RETRY_MAYFAIL", "R" }, |
14e0a214 VB |
647 | { "__GFP_NOFAIL", "NF" }, |
648 | { "__GFP_NORETRY", "NR" }, | |
649 | { "__GFP_COMP", "C" }, | |
650 | { "__GFP_ZERO", "Z" }, | |
651 | { "__GFP_NOMEMALLOC", "NMA" }, | |
652 | { "__GFP_MEMALLOC", "MA" }, | |
653 | { "__GFP_HARDWALL", "HW" }, | |
654 | { "__GFP_THISNODE", "TN" }, | |
655 | { "__GFP_RECLAIMABLE", "RC" }, | |
656 | { "__GFP_MOVABLE", "M" }, | |
657 | { "__GFP_ACCOUNT", "AC" }, | |
14e0a214 VB |
658 | { "__GFP_WRITE", "WR" }, |
659 | { "__GFP_RECLAIM", "R" }, | |
660 | { "__GFP_DIRECT_RECLAIM", "DR" }, | |
661 | { "__GFP_KSWAPD_RECLAIM", "KR" }, | |
0e111156 NK |
662 | }; |
663 | ||
664 | static size_t max_gfp_len; | |
665 | ||
666 | static char *compact_gfp_flags(char *gfp_flags) | |
667 | { | |
668 | char *orig_flags = strdup(gfp_flags); | |
669 | char *new_flags = NULL; | |
b2365122 | 670 | char *str, *pos = NULL; |
0e111156 NK |
671 | size_t len = 0; |
672 | ||
673 | if (orig_flags == NULL) | |
674 | return NULL; | |
675 | ||
676 | str = strtok_r(orig_flags, "|", &pos); | |
677 | while (str) { | |
678 | size_t i; | |
679 | char *new; | |
680 | const char *cpt; | |
681 | ||
682 | for (i = 0; i < ARRAY_SIZE(gfp_compact_table); i++) { | |
683 | if (strcmp(gfp_compact_table[i].original, str)) | |
684 | continue; | |
685 | ||
686 | cpt = gfp_compact_table[i].compact; | |
687 | new = realloc(new_flags, len + strlen(cpt) + 2); | |
688 | if (new == NULL) { | |
689 | free(new_flags); | |
690 | return NULL; | |
691 | } | |
692 | ||
693 | new_flags = new; | |
694 | ||
695 | if (!len) { | |
696 | strcpy(new_flags, cpt); | |
697 | } else { | |
698 | strcat(new_flags, "|"); | |
699 | strcat(new_flags, cpt); | |
700 | len++; | |
701 | } | |
702 | ||
703 | len += strlen(cpt); | |
704 | } | |
705 | ||
706 | str = strtok_r(NULL, "|", &pos); | |
707 | } | |
708 | ||
709 | if (max_gfp_len < len) | |
710 | max_gfp_len = len; | |
711 | ||
712 | free(orig_flags); | |
713 | return new_flags; | |
714 | } | |
715 | ||
716 | static char *compact_gfp_string(unsigned long gfp_flags) | |
717 | { | |
718 | struct gfp_flag key = { | |
719 | .flags = gfp_flags, | |
720 | }; | |
721 | struct gfp_flag *gfp; | |
722 | ||
723 | gfp = bsearch(&key, gfps, nr_gfps, sizeof(*gfps), gfpcmp); | |
724 | if (gfp) | |
725 | return gfp->compact_str; | |
726 | ||
727 | return NULL; | |
728 | } | |
729 | ||
730 | static int parse_gfp_flags(struct perf_evsel *evsel, struct perf_sample *sample, | |
731 | unsigned int gfp_flags) | |
732 | { | |
cbc49b25 | 733 | struct tep_record record = { |
0e111156 NK |
734 | .cpu = sample->cpu, |
735 | .data = sample->raw_data, | |
736 | .size = sample->raw_size, | |
737 | }; | |
738 | struct trace_seq seq; | |
08a9b985 | 739 | char *str, *pos = NULL; |
0e111156 NK |
740 | |
741 | if (nr_gfps) { | |
742 | struct gfp_flag key = { | |
743 | .flags = gfp_flags, | |
744 | }; | |
745 | ||
746 | if (bsearch(&key, gfps, nr_gfps, sizeof(*gfps), gfpcmp)) | |
747 | return 0; | |
748 | } | |
749 | ||
750 | trace_seq_init(&seq); | |
4d5c58b1 | 751 | tep_event_info(&seq, evsel->tp_format, &record); |
0e111156 NK |
752 | |
753 | str = strtok_r(seq.buffer, " ", &pos); | |
754 | while (str) { | |
755 | if (!strncmp(str, "gfp_flags=", 10)) { | |
756 | struct gfp_flag *new; | |
757 | ||
758 | new = realloc(gfps, (nr_gfps + 1) * sizeof(*gfps)); | |
759 | if (new == NULL) | |
760 | return -ENOMEM; | |
761 | ||
762 | gfps = new; | |
763 | new += nr_gfps++; | |
764 | ||
765 | new->flags = gfp_flags; | |
766 | new->human_readable = strdup(str + 10); | |
767 | new->compact_str = compact_gfp_flags(str + 10); | |
768 | if (!new->human_readable || !new->compact_str) | |
769 | return -ENOMEM; | |
770 | ||
771 | qsort(gfps, nr_gfps, sizeof(*gfps), gfpcmp); | |
772 | } | |
773 | ||
774 | str = strtok_r(NULL, " ", &pos); | |
775 | } | |
776 | ||
777 | trace_seq_destroy(&seq); | |
778 | return 0; | |
779 | } | |
780 | ||
0d68bc92 NK |
781 | static int perf_evsel__process_page_alloc_event(struct perf_evsel *evsel, |
782 | struct perf_sample *sample) | |
783 | { | |
784 | u64 page; | |
785 | unsigned int order = perf_evsel__intval(evsel, sample, "order"); | |
786 | unsigned int gfp_flags = perf_evsel__intval(evsel, sample, "gfp_flags"); | |
787 | unsigned int migrate_type = perf_evsel__intval(evsel, sample, | |
788 | "migratetype"); | |
789 | u64 bytes = kmem_page_size << order; | |
c9758cc4 | 790 | u64 callsite; |
6b1a2752 | 791 | struct page_stat *pstat; |
0d68bc92 NK |
792 | struct page_stat this = { |
793 | .order = order, | |
794 | .gfp_flags = gfp_flags, | |
795 | .migrate_type = migrate_type, | |
796 | }; | |
797 | ||
798 | if (use_pfn) | |
799 | page = perf_evsel__intval(evsel, sample, "pfn"); | |
800 | else | |
801 | page = perf_evsel__intval(evsel, sample, "page"); | |
802 | ||
803 | nr_page_allocs++; | |
804 | total_page_alloc_bytes += bytes; | |
805 | ||
806 | if (!valid_page(page)) { | |
807 | nr_page_fails++; | |
808 | total_page_fail_bytes += bytes; | |
809 | ||
810 | return 0; | |
811 | } | |
812 | ||
0e111156 NK |
813 | if (parse_gfp_flags(evsel, sample, gfp_flags) < 0) |
814 | return -1; | |
815 | ||
c9758cc4 NK |
816 | callsite = find_callsite(evsel, sample); |
817 | ||
0d68bc92 NK |
818 | /* |
819 | * This is to find the current page (with correct gfp flags and | |
820 | * migrate type) at free event. | |
821 | */ | |
0d68bc92 | 822 | this.page = page; |
2a7ef02c | 823 | pstat = page_stat__findnew_page(&this); |
6b1a2752 | 824 | if (pstat == NULL) |
0d68bc92 NK |
825 | return -ENOMEM; |
826 | ||
c9758cc4 NK |
827 | pstat->nr_alloc++; |
828 | pstat->alloc_bytes += bytes; | |
829 | pstat->callsite = callsite; | |
830 | ||
2a7ef02c NK |
831 | if (!live_page) { |
832 | pstat = page_stat__findnew_alloc(&this); | |
833 | if (pstat == NULL) | |
834 | return -ENOMEM; | |
835 | ||
836 | pstat->nr_alloc++; | |
837 | pstat->alloc_bytes += bytes; | |
838 | pstat->callsite = callsite; | |
839 | } | |
840 | ||
fb4f313d NK |
841 | this.callsite = callsite; |
842 | pstat = page_stat__findnew_caller(&this); | |
c9758cc4 NK |
843 | if (pstat == NULL) |
844 | return -ENOMEM; | |
845 | ||
6b1a2752 DA |
846 | pstat->nr_alloc++; |
847 | pstat->alloc_bytes += bytes; | |
0d68bc92 NK |
848 | |
849 | order_stats[order][migrate_type]++; | |
850 | ||
851 | return 0; | |
852 | } | |
853 | ||
854 | static int perf_evsel__process_page_free_event(struct perf_evsel *evsel, | |
855 | struct perf_sample *sample) | |
856 | { | |
857 | u64 page; | |
858 | unsigned int order = perf_evsel__intval(evsel, sample, "order"); | |
859 | u64 bytes = kmem_page_size << order; | |
6b1a2752 | 860 | struct page_stat *pstat; |
0d68bc92 NK |
861 | struct page_stat this = { |
862 | .order = order, | |
863 | }; | |
864 | ||
865 | if (use_pfn) | |
866 | page = perf_evsel__intval(evsel, sample, "pfn"); | |
867 | else | |
868 | page = perf_evsel__intval(evsel, sample, "page"); | |
869 | ||
870 | nr_page_frees++; | |
871 | total_page_free_bytes += bytes; | |
872 | ||
2a7ef02c NK |
873 | this.page = page; |
874 | pstat = page_stat__find_page(&this); | |
6b1a2752 | 875 | if (pstat == NULL) { |
0d68bc92 NK |
876 | pr_debug2("missing free at page %"PRIx64" (order: %d)\n", |
877 | page, order); | |
878 | ||
879 | nr_page_nomatch++; | |
880 | total_page_nomatch_bytes += bytes; | |
881 | ||
882 | return 0; | |
883 | } | |
884 | ||
6b1a2752 DA |
885 | this.gfp_flags = pstat->gfp_flags; |
886 | this.migrate_type = pstat->migrate_type; | |
c9758cc4 | 887 | this.callsite = pstat->callsite; |
0d68bc92 | 888 | |
2a7ef02c | 889 | rb_erase(&pstat->node, &page_live_tree); |
6b1a2752 | 890 | free(pstat); |
0d68bc92 | 891 | |
2a7ef02c NK |
892 | if (live_page) { |
893 | order_stats[this.order][this.migrate_type]--; | |
894 | } else { | |
895 | pstat = page_stat__find_alloc(&this); | |
896 | if (pstat == NULL) | |
897 | return -ENOMEM; | |
c9758cc4 | 898 | |
2a7ef02c NK |
899 | pstat->nr_free++; |
900 | pstat->free_bytes += bytes; | |
901 | } | |
c9758cc4 | 902 | |
fb4f313d | 903 | pstat = page_stat__find_caller(&this); |
6b1a2752 | 904 | if (pstat == NULL) |
0d68bc92 NK |
905 | return -ENOENT; |
906 | ||
6b1a2752 DA |
907 | pstat->nr_free++; |
908 | pstat->free_bytes += bytes; | |
0d68bc92 | 909 | |
2a7ef02c NK |
910 | if (live_page) { |
911 | pstat->nr_alloc--; | |
912 | pstat->alloc_bytes -= bytes; | |
913 | ||
914 | if (pstat->nr_alloc == 0) { | |
915 | rb_erase(&pstat->node, &page_caller_tree); | |
916 | free(pstat); | |
917 | } | |
918 | } | |
919 | ||
0d68bc92 NK |
920 | return 0; |
921 | } | |
922 | ||
2a865bd8 DA |
923 | static bool perf_kmem__skip_sample(struct perf_sample *sample) |
924 | { | |
925 | /* skip sample based on time? */ | |
926 | if (perf_time__skip_sample(&ptime, sample->time)) | |
927 | return true; | |
928 | ||
929 | return false; | |
930 | } | |
931 | ||
0f7d2f1b ACM |
932 | typedef int (*tracepoint_handler)(struct perf_evsel *evsel, |
933 | struct perf_sample *sample); | |
ba77c9e1 | 934 | |
1d037ca1 | 935 | static int process_sample_event(struct perf_tool *tool __maybe_unused, |
d20deb64 | 936 | union perf_event *event, |
8115d60c | 937 | struct perf_sample *sample, |
fcf65bf1 | 938 | struct perf_evsel *evsel, |
743eb868 | 939 | struct machine *machine) |
ba77c9e1 | 940 | { |
b91fc39f | 941 | int err = 0; |
ef89325f | 942 | struct thread *thread = machine__findnew_thread(machine, sample->pid, |
13ce34df | 943 | sample->tid); |
ba77c9e1 | 944 | |
ba77c9e1 LZ |
945 | if (thread == NULL) { |
946 | pr_debug("problem processing %d event, skipping it.\n", | |
947 | event->header.type); | |
948 | return -1; | |
949 | } | |
950 | ||
2a865bd8 DA |
951 | if (perf_kmem__skip_sample(sample)) |
952 | return 0; | |
953 | ||
b9c5143a | 954 | dump_printf(" ... thread: %s:%d\n", thread__comm_str(thread), thread->tid); |
ba77c9e1 | 955 | |
744a9719 ACM |
956 | if (evsel->handler != NULL) { |
957 | tracepoint_handler f = evsel->handler; | |
b91fc39f | 958 | err = f(evsel, sample); |
0f7d2f1b ACM |
959 | } |
960 | ||
b91fc39f ACM |
961 | thread__put(thread); |
962 | ||
963 | return err; | |
ba77c9e1 LZ |
964 | } |
965 | ||
fcf65bf1 ACM |
966 | static struct perf_tool perf_kmem = { |
967 | .sample = process_sample_event, | |
968 | .comm = perf_event__process_comm, | |
64c40908 NK |
969 | .mmap = perf_event__process_mmap, |
970 | .mmap2 = perf_event__process_mmap2, | |
f3b3614a | 971 | .namespaces = perf_event__process_namespaces, |
0a8cb85c | 972 | .ordered_events = true, |
ba77c9e1 LZ |
973 | }; |
974 | ||
ba77c9e1 LZ |
975 | static double fragmentation(unsigned long n_req, unsigned long n_alloc) |
976 | { | |
977 | if (n_alloc == 0) | |
978 | return 0.0; | |
979 | else | |
980 | return 100.0 - (100.0 * n_req / n_alloc); | |
981 | } | |
982 | ||
0d68bc92 NK |
983 | static void __print_slab_result(struct rb_root *root, |
984 | struct perf_session *session, | |
985 | int n_lines, int is_caller) | |
ba77c9e1 LZ |
986 | { |
987 | struct rb_node *next; | |
34ba5122 | 988 | struct machine *machine = &session->machines.host; |
ba77c9e1 | 989 | |
65f46e02 | 990 | printf("%.105s\n", graph_dotted_line); |
079d3f65 | 991 | printf(" %-34s |", is_caller ? "Callsite": "Alloc Ptr"); |
47103277 | 992 | printf(" Total_alloc/Per | Total_req/Per | Hit | Ping-pong | Frag\n"); |
65f46e02 | 993 | printf("%.105s\n", graph_dotted_line); |
ba77c9e1 LZ |
994 | |
995 | next = rb_first(root); | |
996 | ||
997 | while (next && n_lines--) { | |
1b145ae5 ACM |
998 | struct alloc_stat *data = rb_entry(next, struct alloc_stat, |
999 | node); | |
1000 | struct symbol *sym = NULL; | |
71cf8b8f | 1001 | struct map *map; |
079d3f65 | 1002 | char buf[BUFSIZ]; |
1b145ae5 ACM |
1003 | u64 addr; |
1004 | ||
1005 | if (is_caller) { | |
1006 | addr = data->call_site; | |
7707b6b6 | 1007 | if (!raw_ip) |
107cad95 | 1008 | sym = machine__find_kernel_symbol(machine, addr, &map); |
1b145ae5 ACM |
1009 | } else |
1010 | addr = data->ptr; | |
1011 | ||
1012 | if (sym != NULL) | |
9486aa38 | 1013 | snprintf(buf, sizeof(buf), "%s+%" PRIx64 "", sym->name, |
71cf8b8f | 1014 | addr - map->unmap_ip(map, sym->start)); |
1b145ae5 | 1015 | else |
9486aa38 | 1016 | snprintf(buf, sizeof(buf), "%#" PRIx64 "", addr); |
079d3f65 | 1017 | printf(" %-34s |", buf); |
ba77c9e1 | 1018 | |
65f46e02 | 1019 | printf(" %9llu/%-5lu | %9llu/%-5lu | %8lu | %9lu | %6.3f%%\n", |
079d3f65 | 1020 | (unsigned long long)data->bytes_alloc, |
ba77c9e1 LZ |
1021 | (unsigned long)data->bytes_alloc / data->hit, |
1022 | (unsigned long long)data->bytes_req, | |
1023 | (unsigned long)data->bytes_req / data->hit, | |
1024 | (unsigned long)data->hit, | |
079d3f65 | 1025 | (unsigned long)data->pingpong, |
ba77c9e1 LZ |
1026 | fragmentation(data->bytes_req, data->bytes_alloc)); |
1027 | ||
1028 | next = rb_next(next); | |
1029 | } | |
1030 | ||
1031 | if (n_lines == -1) | |
65f46e02 | 1032 | printf(" ... | ... | ... | ... | ... | ... \n"); |
ba77c9e1 | 1033 | |
65f46e02 | 1034 | printf("%.105s\n", graph_dotted_line); |
ba77c9e1 LZ |
1035 | } |
1036 | ||
0d68bc92 NK |
1037 | static const char * const migrate_type_str[] = { |
1038 | "UNMOVABL", | |
1039 | "RECLAIM", | |
1040 | "MOVABLE", | |
1041 | "RESERVED", | |
1042 | "CMA/ISLT", | |
1043 | "UNKNOWN", | |
1044 | }; | |
1045 | ||
c9758cc4 | 1046 | static void __print_page_alloc_result(struct perf_session *session, int n_lines) |
0d68bc92 | 1047 | { |
c9758cc4 NK |
1048 | struct rb_node *next = rb_first(&page_alloc_sorted); |
1049 | struct machine *machine = &session->machines.host; | |
0d68bc92 | 1050 | const char *format; |
0e111156 | 1051 | int gfp_len = max(strlen("GFP flags"), max_gfp_len); |
0d68bc92 | 1052 | |
c9758cc4 | 1053 | printf("\n%.105s\n", graph_dotted_line); |
0e111156 NK |
1054 | printf(" %-16s | %5s alloc (KB) | Hits | Order | Mig.type | %-*s | Callsite\n", |
1055 | use_pfn ? "PFN" : "Page", live_page ? "Live" : "Total", | |
1056 | gfp_len, "GFP flags"); | |
c9758cc4 | 1057 | printf("%.105s\n", graph_dotted_line); |
0d68bc92 NK |
1058 | |
1059 | if (use_pfn) | |
0e111156 | 1060 | format = " %16llu | %'16llu | %'9d | %5d | %8s | %-*s | %s\n"; |
0d68bc92 | 1061 | else |
0e111156 | 1062 | format = " %016llx | %'16llu | %'9d | %5d | %8s | %-*s | %s\n"; |
0d68bc92 NK |
1063 | |
1064 | while (next && n_lines--) { | |
1065 | struct page_stat *data; | |
c9758cc4 NK |
1066 | struct symbol *sym; |
1067 | struct map *map; | |
1068 | char buf[32]; | |
1069 | char *caller = buf; | |
0d68bc92 NK |
1070 | |
1071 | data = rb_entry(next, struct page_stat, node); | |
107cad95 | 1072 | sym = machine__find_kernel_symbol(machine, data->callsite, &map); |
a7c3899c | 1073 | if (sym) |
c9758cc4 NK |
1074 | caller = sym->name; |
1075 | else | |
1076 | scnprintf(buf, sizeof(buf), "%"PRIx64, data->callsite); | |
0d68bc92 NK |
1077 | |
1078 | printf(format, (unsigned long long)data->page, | |
1079 | (unsigned long long)data->alloc_bytes / 1024, | |
1080 | data->nr_alloc, data->order, | |
1081 | migrate_type_str[data->migrate_type], | |
0e111156 | 1082 | gfp_len, compact_gfp_string(data->gfp_flags), caller); |
0d68bc92 NK |
1083 | |
1084 | next = rb_next(next); | |
1085 | } | |
1086 | ||
0e111156 NK |
1087 | if (n_lines == -1) { |
1088 | printf(" ... | ... | ... | ... | ... | %-*s | ...\n", | |
1089 | gfp_len, "..."); | |
1090 | } | |
0d68bc92 | 1091 | |
c9758cc4 NK |
1092 | printf("%.105s\n", graph_dotted_line); |
1093 | } | |
1094 | ||
1095 | static void __print_page_caller_result(struct perf_session *session, int n_lines) | |
1096 | { | |
1097 | struct rb_node *next = rb_first(&page_caller_sorted); | |
1098 | struct machine *machine = &session->machines.host; | |
0e111156 | 1099 | int gfp_len = max(strlen("GFP flags"), max_gfp_len); |
c9758cc4 NK |
1100 | |
1101 | printf("\n%.105s\n", graph_dotted_line); | |
0e111156 NK |
1102 | printf(" %5s alloc (KB) | Hits | Order | Mig.type | %-*s | Callsite\n", |
1103 | live_page ? "Live" : "Total", gfp_len, "GFP flags"); | |
c9758cc4 NK |
1104 | printf("%.105s\n", graph_dotted_line); |
1105 | ||
1106 | while (next && n_lines--) { | |
1107 | struct page_stat *data; | |
1108 | struct symbol *sym; | |
1109 | struct map *map; | |
1110 | char buf[32]; | |
1111 | char *caller = buf; | |
1112 | ||
1113 | data = rb_entry(next, struct page_stat, node); | |
107cad95 | 1114 | sym = machine__find_kernel_symbol(machine, data->callsite, &map); |
a7c3899c | 1115 | if (sym) |
c9758cc4 NK |
1116 | caller = sym->name; |
1117 | else | |
1118 | scnprintf(buf, sizeof(buf), "%"PRIx64, data->callsite); | |
1119 | ||
0e111156 | 1120 | printf(" %'16llu | %'9d | %5d | %8s | %-*s | %s\n", |
c9758cc4 NK |
1121 | (unsigned long long)data->alloc_bytes / 1024, |
1122 | data->nr_alloc, data->order, | |
1123 | migrate_type_str[data->migrate_type], | |
0e111156 | 1124 | gfp_len, compact_gfp_string(data->gfp_flags), caller); |
c9758cc4 NK |
1125 | |
1126 | next = rb_next(next); | |
1127 | } | |
1128 | ||
0e111156 NK |
1129 | if (n_lines == -1) { |
1130 | printf(" ... | ... | ... | ... | %-*s | ...\n", | |
1131 | gfp_len, "..."); | |
1132 | } | |
c9758cc4 NK |
1133 | |
1134 | printf("%.105s\n", graph_dotted_line); | |
0d68bc92 NK |
1135 | } |
1136 | ||
0e111156 NK |
1137 | static void print_gfp_flags(void) |
1138 | { | |
1139 | int i; | |
1140 | ||
1141 | printf("#\n"); | |
1142 | printf("# GFP flags\n"); | |
1143 | printf("# ---------\n"); | |
1144 | for (i = 0; i < nr_gfps; i++) { | |
1145 | printf("# %08x: %*s: %s\n", gfps[i].flags, | |
1146 | (int) max_gfp_len, gfps[i].compact_str, | |
1147 | gfps[i].human_readable); | |
1148 | } | |
1149 | } | |
1150 | ||
0d68bc92 | 1151 | static void print_slab_summary(void) |
ba77c9e1 | 1152 | { |
0d68bc92 NK |
1153 | printf("\nSUMMARY (SLAB allocator)"); |
1154 | printf("\n========================\n"); | |
77cfe388 NK |
1155 | printf("Total bytes requested: %'lu\n", total_requested); |
1156 | printf("Total bytes allocated: %'lu\n", total_allocated); | |
aa58e9af DA |
1157 | printf("Total bytes freed: %'lu\n", total_freed); |
1158 | if (total_allocated > total_freed) { | |
1159 | printf("Net total bytes allocated: %'lu\n", | |
1160 | total_allocated - total_freed); | |
1161 | } | |
77cfe388 | 1162 | printf("Total bytes wasted on internal fragmentation: %'lu\n", |
ba77c9e1 LZ |
1163 | total_allocated - total_requested); |
1164 | printf("Internal fragmentation: %f%%\n", | |
1165 | fragmentation(total_requested, total_allocated)); | |
77cfe388 | 1166 | printf("Cross CPU allocations: %'lu/%'lu\n", nr_cross_allocs, nr_allocs); |
ba77c9e1 LZ |
1167 | } |
1168 | ||
0d68bc92 NK |
1169 | static void print_page_summary(void) |
1170 | { | |
1171 | int o, m; | |
1172 | u64 nr_alloc_freed = nr_page_frees - nr_page_nomatch; | |
1173 | u64 total_alloc_freed_bytes = total_page_free_bytes - total_page_nomatch_bytes; | |
1174 | ||
1175 | printf("\nSUMMARY (page allocator)"); | |
1176 | printf("\n========================\n"); | |
1177 | printf("%-30s: %'16lu [ %'16"PRIu64" KB ]\n", "Total allocation requests", | |
1178 | nr_page_allocs, total_page_alloc_bytes / 1024); | |
1179 | printf("%-30s: %'16lu [ %'16"PRIu64" KB ]\n", "Total free requests", | |
1180 | nr_page_frees, total_page_free_bytes / 1024); | |
1181 | printf("\n"); | |
1182 | ||
6145c259 | 1183 | printf("%-30s: %'16"PRIu64" [ %'16"PRIu64" KB ]\n", "Total alloc+freed requests", |
0d68bc92 | 1184 | nr_alloc_freed, (total_alloc_freed_bytes) / 1024); |
6145c259 | 1185 | printf("%-30s: %'16"PRIu64" [ %'16"PRIu64" KB ]\n", "Total alloc-only requests", |
0d68bc92 NK |
1186 | nr_page_allocs - nr_alloc_freed, |
1187 | (total_page_alloc_bytes - total_alloc_freed_bytes) / 1024); | |
1188 | printf("%-30s: %'16lu [ %'16"PRIu64" KB ]\n", "Total free-only requests", | |
1189 | nr_page_nomatch, total_page_nomatch_bytes / 1024); | |
1190 | printf("\n"); | |
1191 | ||
1192 | printf("%-30s: %'16lu [ %'16"PRIu64" KB ]\n", "Total allocation failures", | |
1193 | nr_page_fails, total_page_fail_bytes / 1024); | |
1194 | printf("\n"); | |
1195 | ||
1196 | printf("%5s %12s %12s %12s %12s %12s\n", "Order", "Unmovable", | |
1197 | "Reclaimable", "Movable", "Reserved", "CMA/Isolated"); | |
1198 | printf("%.5s %.12s %.12s %.12s %.12s %.12s\n", graph_dotted_line, | |
1199 | graph_dotted_line, graph_dotted_line, graph_dotted_line, | |
1200 | graph_dotted_line, graph_dotted_line); | |
1201 | ||
1202 | for (o = 0; o < MAX_PAGE_ORDER; o++) { | |
1203 | printf("%5d", o); | |
1204 | for (m = 0; m < MAX_MIGRATE_TYPES - 1; m++) { | |
1205 | if (order_stats[o][m]) | |
1206 | printf(" %'12d", order_stats[o][m]); | |
1207 | else | |
1208 | printf(" %12c", '.'); | |
1209 | } | |
1210 | printf("\n"); | |
1211 | } | |
1212 | } | |
1213 | ||
1214 | static void print_slab_result(struct perf_session *session) | |
ba77c9e1 LZ |
1215 | { |
1216 | if (caller_flag) | |
0d68bc92 NK |
1217 | __print_slab_result(&root_caller_sorted, session, caller_lines, 1); |
1218 | if (alloc_flag) | |
1219 | __print_slab_result(&root_alloc_sorted, session, alloc_lines, 0); | |
1220 | print_slab_summary(); | |
1221 | } | |
1222 | ||
1223 | static void print_page_result(struct perf_session *session) | |
1224 | { | |
0e111156 NK |
1225 | if (caller_flag || alloc_flag) |
1226 | print_gfp_flags(); | |
c9758cc4 NK |
1227 | if (caller_flag) |
1228 | __print_page_caller_result(session, caller_lines); | |
ba77c9e1 | 1229 | if (alloc_flag) |
c9758cc4 | 1230 | __print_page_alloc_result(session, alloc_lines); |
0d68bc92 NK |
1231 | print_page_summary(); |
1232 | } | |
1233 | ||
1234 | static void print_result(struct perf_session *session) | |
1235 | { | |
1236 | if (kmem_slab) | |
1237 | print_slab_result(session); | |
1238 | if (kmem_page) | |
1239 | print_page_result(session); | |
ba77c9e1 LZ |
1240 | } |
1241 | ||
fb4f313d NK |
1242 | static LIST_HEAD(slab_caller_sort); |
1243 | static LIST_HEAD(slab_alloc_sort); | |
1244 | static LIST_HEAD(page_caller_sort); | |
1245 | static LIST_HEAD(page_alloc_sort); | |
29b3e152 | 1246 | |
0d68bc92 NK |
1247 | static void sort_slab_insert(struct rb_root *root, struct alloc_stat *data, |
1248 | struct list_head *sort_list) | |
ba77c9e1 LZ |
1249 | { |
1250 | struct rb_node **new = &(root->rb_node); | |
1251 | struct rb_node *parent = NULL; | |
29b3e152 | 1252 | struct sort_dimension *sort; |
ba77c9e1 LZ |
1253 | |
1254 | while (*new) { | |
1255 | struct alloc_stat *this; | |
29b3e152 | 1256 | int cmp = 0; |
ba77c9e1 LZ |
1257 | |
1258 | this = rb_entry(*new, struct alloc_stat, node); | |
1259 | parent = *new; | |
1260 | ||
29b3e152 LZ |
1261 | list_for_each_entry(sort, sort_list, list) { |
1262 | cmp = sort->cmp(data, this); | |
1263 | if (cmp) | |
1264 | break; | |
1265 | } | |
ba77c9e1 LZ |
1266 | |
1267 | if (cmp > 0) | |
1268 | new = &((*new)->rb_left); | |
1269 | else | |
1270 | new = &((*new)->rb_right); | |
1271 | } | |
1272 | ||
1273 | rb_link_node(&data->node, parent, new); | |
1274 | rb_insert_color(&data->node, root); | |
1275 | } | |
1276 | ||
0d68bc92 NK |
1277 | static void __sort_slab_result(struct rb_root *root, struct rb_root *root_sorted, |
1278 | struct list_head *sort_list) | |
ba77c9e1 LZ |
1279 | { |
1280 | struct rb_node *node; | |
1281 | struct alloc_stat *data; | |
1282 | ||
1283 | for (;;) { | |
1284 | node = rb_first(root); | |
1285 | if (!node) | |
1286 | break; | |
1287 | ||
1288 | rb_erase(node, root); | |
1289 | data = rb_entry(node, struct alloc_stat, node); | |
0d68bc92 NK |
1290 | sort_slab_insert(root_sorted, data, sort_list); |
1291 | } | |
1292 | } | |
1293 | ||
fb4f313d NK |
1294 | static void sort_page_insert(struct rb_root *root, struct page_stat *data, |
1295 | struct list_head *sort_list) | |
0d68bc92 NK |
1296 | { |
1297 | struct rb_node **new = &root->rb_node; | |
1298 | struct rb_node *parent = NULL; | |
fb4f313d | 1299 | struct sort_dimension *sort; |
0d68bc92 NK |
1300 | |
1301 | while (*new) { | |
1302 | struct page_stat *this; | |
1303 | int cmp = 0; | |
1304 | ||
1305 | this = rb_entry(*new, struct page_stat, node); | |
1306 | parent = *new; | |
1307 | ||
fb4f313d NK |
1308 | list_for_each_entry(sort, sort_list, list) { |
1309 | cmp = sort->cmp(data, this); | |
1310 | if (cmp) | |
1311 | break; | |
1312 | } | |
0d68bc92 NK |
1313 | |
1314 | if (cmp > 0) | |
1315 | new = &parent->rb_left; | |
1316 | else | |
1317 | new = &parent->rb_right; | |
1318 | } | |
1319 | ||
1320 | rb_link_node(&data->node, parent, new); | |
1321 | rb_insert_color(&data->node, root); | |
1322 | } | |
1323 | ||
fb4f313d NK |
1324 | static void __sort_page_result(struct rb_root *root, struct rb_root *root_sorted, |
1325 | struct list_head *sort_list) | |
0d68bc92 NK |
1326 | { |
1327 | struct rb_node *node; | |
1328 | struct page_stat *data; | |
1329 | ||
1330 | for (;;) { | |
1331 | node = rb_first(root); | |
1332 | if (!node) | |
1333 | break; | |
1334 | ||
1335 | rb_erase(node, root); | |
1336 | data = rb_entry(node, struct page_stat, node); | |
fb4f313d | 1337 | sort_page_insert(root_sorted, data, sort_list); |
ba77c9e1 LZ |
1338 | } |
1339 | } | |
1340 | ||
1341 | static void sort_result(void) | |
1342 | { | |
0d68bc92 NK |
1343 | if (kmem_slab) { |
1344 | __sort_slab_result(&root_alloc_stat, &root_alloc_sorted, | |
fb4f313d | 1345 | &slab_alloc_sort); |
0d68bc92 | 1346 | __sort_slab_result(&root_caller_stat, &root_caller_sorted, |
fb4f313d | 1347 | &slab_caller_sort); |
0d68bc92 NK |
1348 | } |
1349 | if (kmem_page) { | |
2a7ef02c NK |
1350 | if (live_page) |
1351 | __sort_page_result(&page_live_tree, &page_alloc_sorted, | |
1352 | &page_alloc_sort); | |
1353 | else | |
1354 | __sort_page_result(&page_alloc_tree, &page_alloc_sorted, | |
1355 | &page_alloc_sort); | |
1356 | ||
fb4f313d NK |
1357 | __sort_page_result(&page_caller_tree, &page_caller_sorted, |
1358 | &page_caller_sort); | |
0d68bc92 | 1359 | } |
ba77c9e1 LZ |
1360 | } |
1361 | ||
2b2b2c68 | 1362 | static int __cmd_kmem(struct perf_session *session) |
ba77c9e1 | 1363 | { |
d549c769 | 1364 | int err = -EINVAL; |
0d68bc92 | 1365 | struct perf_evsel *evsel; |
0f7d2f1b | 1366 | const struct perf_evsel_str_handler kmem_tracepoints[] = { |
0d68bc92 | 1367 | /* slab allocator */ |
0f7d2f1b ACM |
1368 | { "kmem:kmalloc", perf_evsel__process_alloc_event, }, |
1369 | { "kmem:kmem_cache_alloc", perf_evsel__process_alloc_event, }, | |
1370 | { "kmem:kmalloc_node", perf_evsel__process_alloc_node_event, }, | |
1371 | { "kmem:kmem_cache_alloc_node", perf_evsel__process_alloc_node_event, }, | |
1372 | { "kmem:kfree", perf_evsel__process_free_event, }, | |
1373 | { "kmem:kmem_cache_free", perf_evsel__process_free_event, }, | |
0d68bc92 NK |
1374 | /* page allocator */ |
1375 | { "kmem:mm_page_alloc", perf_evsel__process_page_alloc_event, }, | |
1376 | { "kmem:mm_page_free", perf_evsel__process_page_free_event, }, | |
0f7d2f1b | 1377 | }; |
4aa65636 | 1378 | |
d549c769 | 1379 | if (!perf_session__has_traces(session, "kmem record")) |
2b2b2c68 | 1380 | goto out; |
d549c769 | 1381 | |
0f7d2f1b ACM |
1382 | if (perf_session__set_tracepoints_handlers(session, kmem_tracepoints)) { |
1383 | pr_err("Initializing perf session tracepoint handlers failed\n"); | |
2b2b2c68 | 1384 | goto out; |
0f7d2f1b ACM |
1385 | } |
1386 | ||
e5cadb93 | 1387 | evlist__for_each_entry(session->evlist, evsel) { |
0d68bc92 NK |
1388 | if (!strcmp(perf_evsel__name(evsel), "kmem:mm_page_alloc") && |
1389 | perf_evsel__field(evsel, "pfn")) { | |
1390 | use_pfn = true; | |
1391 | break; | |
1392 | } | |
1393 | } | |
1394 | ||
ba77c9e1 | 1395 | setup_pager(); |
b7b61cbe | 1396 | err = perf_session__process_events(session); |
0d68bc92 NK |
1397 | if (err != 0) { |
1398 | pr_err("error during process events: %d\n", err); | |
2b2b2c68 | 1399 | goto out; |
0d68bc92 | 1400 | } |
ba77c9e1 | 1401 | sort_result(); |
4aa65636 | 1402 | print_result(session); |
2b2b2c68 | 1403 | out: |
4aa65636 | 1404 | return err; |
ba77c9e1 LZ |
1405 | } |
1406 | ||
fb4f313d NK |
1407 | /* slab sort keys */ |
1408 | static int ptr_cmp(void *a, void *b) | |
ba77c9e1 | 1409 | { |
fb4f313d NK |
1410 | struct alloc_stat *l = a; |
1411 | struct alloc_stat *r = b; | |
1412 | ||
ba77c9e1 LZ |
1413 | if (l->ptr < r->ptr) |
1414 | return -1; | |
1415 | else if (l->ptr > r->ptr) | |
1416 | return 1; | |
1417 | return 0; | |
1418 | } | |
1419 | ||
29b3e152 LZ |
1420 | static struct sort_dimension ptr_sort_dimension = { |
1421 | .name = "ptr", | |
1422 | .cmp = ptr_cmp, | |
1423 | }; | |
1424 | ||
fb4f313d | 1425 | static int slab_callsite_cmp(void *a, void *b) |
ba77c9e1 | 1426 | { |
fb4f313d NK |
1427 | struct alloc_stat *l = a; |
1428 | struct alloc_stat *r = b; | |
1429 | ||
ba77c9e1 LZ |
1430 | if (l->call_site < r->call_site) |
1431 | return -1; | |
1432 | else if (l->call_site > r->call_site) | |
1433 | return 1; | |
1434 | return 0; | |
1435 | } | |
1436 | ||
29b3e152 LZ |
1437 | static struct sort_dimension callsite_sort_dimension = { |
1438 | .name = "callsite", | |
fb4f313d | 1439 | .cmp = slab_callsite_cmp, |
29b3e152 LZ |
1440 | }; |
1441 | ||
fb4f313d | 1442 | static int hit_cmp(void *a, void *b) |
f3ced7cd | 1443 | { |
fb4f313d NK |
1444 | struct alloc_stat *l = a; |
1445 | struct alloc_stat *r = b; | |
1446 | ||
f3ced7cd PE |
1447 | if (l->hit < r->hit) |
1448 | return -1; | |
1449 | else if (l->hit > r->hit) | |
1450 | return 1; | |
1451 | return 0; | |
1452 | } | |
1453 | ||
29b3e152 LZ |
1454 | static struct sort_dimension hit_sort_dimension = { |
1455 | .name = "hit", | |
1456 | .cmp = hit_cmp, | |
1457 | }; | |
1458 | ||
fb4f313d | 1459 | static int bytes_cmp(void *a, void *b) |
ba77c9e1 | 1460 | { |
fb4f313d NK |
1461 | struct alloc_stat *l = a; |
1462 | struct alloc_stat *r = b; | |
1463 | ||
ba77c9e1 LZ |
1464 | if (l->bytes_alloc < r->bytes_alloc) |
1465 | return -1; | |
1466 | else if (l->bytes_alloc > r->bytes_alloc) | |
1467 | return 1; | |
1468 | return 0; | |
1469 | } | |
1470 | ||
29b3e152 LZ |
1471 | static struct sort_dimension bytes_sort_dimension = { |
1472 | .name = "bytes", | |
1473 | .cmp = bytes_cmp, | |
1474 | }; | |
1475 | ||
fb4f313d | 1476 | static int frag_cmp(void *a, void *b) |
f3ced7cd PE |
1477 | { |
1478 | double x, y; | |
fb4f313d NK |
1479 | struct alloc_stat *l = a; |
1480 | struct alloc_stat *r = b; | |
f3ced7cd PE |
1481 | |
1482 | x = fragmentation(l->bytes_req, l->bytes_alloc); | |
1483 | y = fragmentation(r->bytes_req, r->bytes_alloc); | |
1484 | ||
1485 | if (x < y) | |
1486 | return -1; | |
1487 | else if (x > y) | |
1488 | return 1; | |
1489 | return 0; | |
1490 | } | |
1491 | ||
29b3e152 LZ |
1492 | static struct sort_dimension frag_sort_dimension = { |
1493 | .name = "frag", | |
1494 | .cmp = frag_cmp, | |
1495 | }; | |
1496 | ||
fb4f313d | 1497 | static int pingpong_cmp(void *a, void *b) |
079d3f65 | 1498 | { |
fb4f313d NK |
1499 | struct alloc_stat *l = a; |
1500 | struct alloc_stat *r = b; | |
1501 | ||
079d3f65 LZ |
1502 | if (l->pingpong < r->pingpong) |
1503 | return -1; | |
1504 | else if (l->pingpong > r->pingpong) | |
1505 | return 1; | |
1506 | return 0; | |
1507 | } | |
1508 | ||
1509 | static struct sort_dimension pingpong_sort_dimension = { | |
1510 | .name = "pingpong", | |
1511 | .cmp = pingpong_cmp, | |
1512 | }; | |
1513 | ||
fb4f313d NK |
1514 | /* page sort keys */ |
1515 | static int page_cmp(void *a, void *b) | |
1516 | { | |
1517 | struct page_stat *l = a; | |
1518 | struct page_stat *r = b; | |
1519 | ||
1520 | if (l->page < r->page) | |
1521 | return -1; | |
1522 | else if (l->page > r->page) | |
1523 | return 1; | |
1524 | return 0; | |
1525 | } | |
1526 | ||
1527 | static struct sort_dimension page_sort_dimension = { | |
1528 | .name = "page", | |
1529 | .cmp = page_cmp, | |
1530 | }; | |
1531 | ||
1532 | static int page_callsite_cmp(void *a, void *b) | |
1533 | { | |
1534 | struct page_stat *l = a; | |
1535 | struct page_stat *r = b; | |
1536 | ||
1537 | if (l->callsite < r->callsite) | |
1538 | return -1; | |
1539 | else if (l->callsite > r->callsite) | |
1540 | return 1; | |
1541 | return 0; | |
1542 | } | |
1543 | ||
1544 | static struct sort_dimension page_callsite_sort_dimension = { | |
1545 | .name = "callsite", | |
1546 | .cmp = page_callsite_cmp, | |
1547 | }; | |
1548 | ||
1549 | static int page_hit_cmp(void *a, void *b) | |
1550 | { | |
1551 | struct page_stat *l = a; | |
1552 | struct page_stat *r = b; | |
1553 | ||
1554 | if (l->nr_alloc < r->nr_alloc) | |
1555 | return -1; | |
1556 | else if (l->nr_alloc > r->nr_alloc) | |
1557 | return 1; | |
1558 | return 0; | |
1559 | } | |
1560 | ||
1561 | static struct sort_dimension page_hit_sort_dimension = { | |
1562 | .name = "hit", | |
1563 | .cmp = page_hit_cmp, | |
1564 | }; | |
1565 | ||
1566 | static int page_bytes_cmp(void *a, void *b) | |
1567 | { | |
1568 | struct page_stat *l = a; | |
1569 | struct page_stat *r = b; | |
1570 | ||
1571 | if (l->alloc_bytes < r->alloc_bytes) | |
1572 | return -1; | |
1573 | else if (l->alloc_bytes > r->alloc_bytes) | |
1574 | return 1; | |
1575 | return 0; | |
1576 | } | |
1577 | ||
1578 | static struct sort_dimension page_bytes_sort_dimension = { | |
1579 | .name = "bytes", | |
1580 | .cmp = page_bytes_cmp, | |
1581 | }; | |
1582 | ||
1583 | static int page_order_cmp(void *a, void *b) | |
1584 | { | |
1585 | struct page_stat *l = a; | |
1586 | struct page_stat *r = b; | |
1587 | ||
1588 | if (l->order < r->order) | |
1589 | return -1; | |
1590 | else if (l->order > r->order) | |
1591 | return 1; | |
1592 | return 0; | |
1593 | } | |
1594 | ||
1595 | static struct sort_dimension page_order_sort_dimension = { | |
1596 | .name = "order", | |
1597 | .cmp = page_order_cmp, | |
1598 | }; | |
1599 | ||
1600 | static int migrate_type_cmp(void *a, void *b) | |
1601 | { | |
1602 | struct page_stat *l = a; | |
1603 | struct page_stat *r = b; | |
1604 | ||
1605 | /* for internal use to find free'd page */ | |
1606 | if (l->migrate_type == -1U) | |
1607 | return 0; | |
1608 | ||
1609 | if (l->migrate_type < r->migrate_type) | |
1610 | return -1; | |
1611 | else if (l->migrate_type > r->migrate_type) | |
1612 | return 1; | |
1613 | return 0; | |
1614 | } | |
1615 | ||
1616 | static struct sort_dimension migrate_type_sort_dimension = { | |
1617 | .name = "migtype", | |
1618 | .cmp = migrate_type_cmp, | |
1619 | }; | |
1620 | ||
1621 | static int gfp_flags_cmp(void *a, void *b) | |
1622 | { | |
1623 | struct page_stat *l = a; | |
1624 | struct page_stat *r = b; | |
1625 | ||
1626 | /* for internal use to find free'd page */ | |
1627 | if (l->gfp_flags == -1U) | |
1628 | return 0; | |
1629 | ||
1630 | if (l->gfp_flags < r->gfp_flags) | |
1631 | return -1; | |
1632 | else if (l->gfp_flags > r->gfp_flags) | |
1633 | return 1; | |
1634 | return 0; | |
1635 | } | |
1636 | ||
1637 | static struct sort_dimension gfp_flags_sort_dimension = { | |
1638 | .name = "gfp", | |
1639 | .cmp = gfp_flags_cmp, | |
1640 | }; | |
1641 | ||
1642 | static struct sort_dimension *slab_sorts[] = { | |
29b3e152 LZ |
1643 | &ptr_sort_dimension, |
1644 | &callsite_sort_dimension, | |
1645 | &hit_sort_dimension, | |
1646 | &bytes_sort_dimension, | |
1647 | &frag_sort_dimension, | |
079d3f65 | 1648 | &pingpong_sort_dimension, |
29b3e152 LZ |
1649 | }; |
1650 | ||
fb4f313d NK |
1651 | static struct sort_dimension *page_sorts[] = { |
1652 | &page_sort_dimension, | |
1653 | &page_callsite_sort_dimension, | |
1654 | &page_hit_sort_dimension, | |
1655 | &page_bytes_sort_dimension, | |
1656 | &page_order_sort_dimension, | |
1657 | &migrate_type_sort_dimension, | |
1658 | &gfp_flags_sort_dimension, | |
1659 | }; | |
29b3e152 | 1660 | |
fb4f313d | 1661 | static int slab_sort_dimension__add(const char *tok, struct list_head *list) |
29b3e152 LZ |
1662 | { |
1663 | struct sort_dimension *sort; | |
1664 | int i; | |
1665 | ||
fb4f313d NK |
1666 | for (i = 0; i < (int)ARRAY_SIZE(slab_sorts); i++) { |
1667 | if (!strcmp(slab_sorts[i]->name, tok)) { | |
1668 | sort = memdup(slab_sorts[i], sizeof(*slab_sorts[i])); | |
2814eb05 | 1669 | if (!sort) { |
8d9233f2 | 1670 | pr_err("%s: memdup failed\n", __func__); |
2814eb05 ACM |
1671 | return -1; |
1672 | } | |
29b3e152 LZ |
1673 | list_add_tail(&sort->list, list); |
1674 | return 0; | |
1675 | } | |
1676 | } | |
1677 | ||
1678 | return -1; | |
1679 | } | |
1680 | ||
fb4f313d NK |
1681 | static int page_sort_dimension__add(const char *tok, struct list_head *list) |
1682 | { | |
1683 | struct sort_dimension *sort; | |
1684 | int i; | |
1685 | ||
1686 | for (i = 0; i < (int)ARRAY_SIZE(page_sorts); i++) { | |
1687 | if (!strcmp(page_sorts[i]->name, tok)) { | |
1688 | sort = memdup(page_sorts[i], sizeof(*page_sorts[i])); | |
1689 | if (!sort) { | |
1690 | pr_err("%s: memdup failed\n", __func__); | |
1691 | return -1; | |
1692 | } | |
1693 | list_add_tail(&sort->list, list); | |
1694 | return 0; | |
1695 | } | |
1696 | } | |
1697 | ||
1698 | return -1; | |
1699 | } | |
1700 | ||
1701 | static int setup_slab_sorting(struct list_head *sort_list, const char *arg) | |
29b3e152 LZ |
1702 | { |
1703 | char *tok; | |
1704 | char *str = strdup(arg); | |
405f8755 | 1705 | char *pos = str; |
29b3e152 | 1706 | |
2814eb05 ACM |
1707 | if (!str) { |
1708 | pr_err("%s: strdup failed\n", __func__); | |
1709 | return -1; | |
1710 | } | |
29b3e152 LZ |
1711 | |
1712 | while (true) { | |
405f8755 | 1713 | tok = strsep(&pos, ","); |
29b3e152 LZ |
1714 | if (!tok) |
1715 | break; | |
fb4f313d | 1716 | if (slab_sort_dimension__add(tok, sort_list) < 0) { |
62d94b00 | 1717 | pr_err("Unknown slab --sort key: '%s'", tok); |
fb4f313d NK |
1718 | free(str); |
1719 | return -1; | |
1720 | } | |
1721 | } | |
1722 | ||
1723 | free(str); | |
1724 | return 0; | |
1725 | } | |
1726 | ||
1727 | static int setup_page_sorting(struct list_head *sort_list, const char *arg) | |
1728 | { | |
1729 | char *tok; | |
1730 | char *str = strdup(arg); | |
1731 | char *pos = str; | |
1732 | ||
1733 | if (!str) { | |
1734 | pr_err("%s: strdup failed\n", __func__); | |
1735 | return -1; | |
1736 | } | |
1737 | ||
1738 | while (true) { | |
1739 | tok = strsep(&pos, ","); | |
1740 | if (!tok) | |
1741 | break; | |
1742 | if (page_sort_dimension__add(tok, sort_list) < 0) { | |
62d94b00 | 1743 | pr_err("Unknown page --sort key: '%s'", tok); |
1b22859d | 1744 | free(str); |
29b3e152 LZ |
1745 | return -1; |
1746 | } | |
1747 | } | |
1748 | ||
1749 | free(str); | |
1750 | return 0; | |
1751 | } | |
1752 | ||
1d037ca1 IT |
1753 | static int parse_sort_opt(const struct option *opt __maybe_unused, |
1754 | const char *arg, int unset __maybe_unused) | |
ba77c9e1 | 1755 | { |
ba77c9e1 LZ |
1756 | if (!arg) |
1757 | return -1; | |
1758 | ||
0c160d49 NK |
1759 | if (kmem_page > kmem_slab || |
1760 | (kmem_page == 0 && kmem_slab == 0 && kmem_default == KMEM_PAGE)) { | |
fb4f313d NK |
1761 | if (caller_flag > alloc_flag) |
1762 | return setup_page_sorting(&page_caller_sort, arg); | |
1763 | else | |
1764 | return setup_page_sorting(&page_alloc_sort, arg); | |
1765 | } else { | |
1766 | if (caller_flag > alloc_flag) | |
1767 | return setup_slab_sorting(&slab_caller_sort, arg); | |
1768 | else | |
1769 | return setup_slab_sorting(&slab_alloc_sort, arg); | |
1770 | } | |
ba77c9e1 LZ |
1771 | |
1772 | return 0; | |
1773 | } | |
1774 | ||
1d037ca1 IT |
1775 | static int parse_caller_opt(const struct option *opt __maybe_unused, |
1776 | const char *arg __maybe_unused, | |
1777 | int unset __maybe_unused) | |
ba77c9e1 | 1778 | { |
90b86a9f LZ |
1779 | caller_flag = (alloc_flag + 1); |
1780 | return 0; | |
1781 | } | |
ba77c9e1 | 1782 | |
1d037ca1 IT |
1783 | static int parse_alloc_opt(const struct option *opt __maybe_unused, |
1784 | const char *arg __maybe_unused, | |
1785 | int unset __maybe_unused) | |
90b86a9f LZ |
1786 | { |
1787 | alloc_flag = (caller_flag + 1); | |
ba77c9e1 LZ |
1788 | return 0; |
1789 | } | |
1790 | ||
0d68bc92 NK |
1791 | static int parse_slab_opt(const struct option *opt __maybe_unused, |
1792 | const char *arg __maybe_unused, | |
1793 | int unset __maybe_unused) | |
1794 | { | |
1795 | kmem_slab = (kmem_page + 1); | |
1796 | return 0; | |
1797 | } | |
1798 | ||
1799 | static int parse_page_opt(const struct option *opt __maybe_unused, | |
1800 | const char *arg __maybe_unused, | |
1801 | int unset __maybe_unused) | |
1802 | { | |
1803 | kmem_page = (kmem_slab + 1); | |
1804 | return 0; | |
1805 | } | |
1806 | ||
1d037ca1 IT |
1807 | static int parse_line_opt(const struct option *opt __maybe_unused, |
1808 | const char *arg, int unset __maybe_unused) | |
ba77c9e1 LZ |
1809 | { |
1810 | int lines; | |
1811 | ||
1812 | if (!arg) | |
1813 | return -1; | |
1814 | ||
1815 | lines = strtoul(arg, NULL, 10); | |
1816 | ||
1817 | if (caller_flag > alloc_flag) | |
1818 | caller_lines = lines; | |
1819 | else | |
1820 | alloc_lines = lines; | |
1821 | ||
1822 | return 0; | |
1823 | } | |
1824 | ||
0433ffbe ACM |
1825 | static int __cmd_record(int argc, const char **argv) |
1826 | { | |
1827 | const char * const record_args[] = { | |
4a4d371a | 1828 | "record", "-a", "-R", "-c", "1", |
0d68bc92 NK |
1829 | }; |
1830 | const char * const slab_events[] = { | |
ba77c9e1 LZ |
1831 | "-e", "kmem:kmalloc", |
1832 | "-e", "kmem:kmalloc_node", | |
1833 | "-e", "kmem:kfree", | |
1834 | "-e", "kmem:kmem_cache_alloc", | |
1835 | "-e", "kmem:kmem_cache_alloc_node", | |
1836 | "-e", "kmem:kmem_cache_free", | |
0433ffbe | 1837 | }; |
0d68bc92 NK |
1838 | const char * const page_events[] = { |
1839 | "-e", "kmem:mm_page_alloc", | |
1840 | "-e", "kmem:mm_page_free", | |
1841 | }; | |
ba77c9e1 LZ |
1842 | unsigned int rec_argc, i, j; |
1843 | const char **rec_argv; | |
1844 | ||
1845 | rec_argc = ARRAY_SIZE(record_args) + argc - 1; | |
0d68bc92 NK |
1846 | if (kmem_slab) |
1847 | rec_argc += ARRAY_SIZE(slab_events); | |
1848 | if (kmem_page) | |
c9758cc4 | 1849 | rec_argc += ARRAY_SIZE(page_events) + 1; /* for -g */ |
0d68bc92 | 1850 | |
ba77c9e1 LZ |
1851 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); |
1852 | ||
ce47dc56 CS |
1853 | if (rec_argv == NULL) |
1854 | return -ENOMEM; | |
1855 | ||
ba77c9e1 LZ |
1856 | for (i = 0; i < ARRAY_SIZE(record_args); i++) |
1857 | rec_argv[i] = strdup(record_args[i]); | |
1858 | ||
0d68bc92 NK |
1859 | if (kmem_slab) { |
1860 | for (j = 0; j < ARRAY_SIZE(slab_events); j++, i++) | |
1861 | rec_argv[i] = strdup(slab_events[j]); | |
1862 | } | |
1863 | if (kmem_page) { | |
c9758cc4 NK |
1864 | rec_argv[i++] = strdup("-g"); |
1865 | ||
0d68bc92 NK |
1866 | for (j = 0; j < ARRAY_SIZE(page_events); j++, i++) |
1867 | rec_argv[i] = strdup(page_events[j]); | |
1868 | } | |
1869 | ||
ba77c9e1 LZ |
1870 | for (j = 1; j < (unsigned int)argc; j++, i++) |
1871 | rec_argv[i] = argv[j]; | |
1872 | ||
b0ad8ea6 | 1873 | return cmd_record(i, rec_argv); |
ba77c9e1 LZ |
1874 | } |
1875 | ||
b8cbb349 | 1876 | static int kmem_config(const char *var, const char *value, void *cb __maybe_unused) |
0c160d49 NK |
1877 | { |
1878 | if (!strcmp(var, "kmem.default")) { | |
1879 | if (!strcmp(value, "slab")) | |
1880 | kmem_default = KMEM_SLAB; | |
1881 | else if (!strcmp(value, "page")) | |
1882 | kmem_default = KMEM_PAGE; | |
1883 | else | |
1884 | pr_err("invalid default value ('slab' or 'page' required): %s\n", | |
1885 | value); | |
1886 | return 0; | |
1887 | } | |
1888 | ||
b8cbb349 | 1889 | return 0; |
0c160d49 NK |
1890 | } |
1891 | ||
b0ad8ea6 | 1892 | int cmd_kmem(int argc, const char **argv) |
ba77c9e1 | 1893 | { |
fb4f313d NK |
1894 | const char * const default_slab_sort = "frag,hit,bytes"; |
1895 | const char * const default_page_sort = "bytes,hit"; | |
8ceb41d7 | 1896 | struct perf_data data = { |
d1eeb77c YS |
1897 | .mode = PERF_DATA_MODE_READ, |
1898 | }; | |
0433ffbe ACM |
1899 | const struct option kmem_options[] = { |
1900 | OPT_STRING('i', "input", &input_name, "file", "input file name"), | |
bd72a33e NK |
1901 | OPT_INCR('v', "verbose", &verbose, |
1902 | "be more verbose (show symbol address, etc)"), | |
0433ffbe ACM |
1903 | OPT_CALLBACK_NOOPT(0, "caller", NULL, NULL, |
1904 | "show per-callsite statistics", parse_caller_opt), | |
1905 | OPT_CALLBACK_NOOPT(0, "alloc", NULL, NULL, | |
1906 | "show per-allocation statistics", parse_alloc_opt), | |
1907 | OPT_CALLBACK('s', "sort", NULL, "key[,key2...]", | |
fb4f313d NK |
1908 | "sort by keys: ptr, callsite, bytes, hit, pingpong, frag, " |
1909 | "page, order, migtype, gfp", parse_sort_opt), | |
0433ffbe ACM |
1910 | OPT_CALLBACK('l', "line", NULL, "num", "show n lines", parse_line_opt), |
1911 | OPT_BOOLEAN(0, "raw-ip", &raw_ip, "show raw ip instead of symbol"), | |
8ceb41d7 | 1912 | OPT_BOOLEAN('f', "force", &data.force, "don't complain, do it"), |
0d68bc92 NK |
1913 | OPT_CALLBACK_NOOPT(0, "slab", NULL, NULL, "Analyze slab allocator", |
1914 | parse_slab_opt), | |
1915 | OPT_CALLBACK_NOOPT(0, "page", NULL, NULL, "Analyze page allocator", | |
1916 | parse_page_opt), | |
2a7ef02c | 1917 | OPT_BOOLEAN(0, "live", &live_page, "Show live page stat"), |
2a865bd8 DA |
1918 | OPT_STRING(0, "time", &time_str, "str", |
1919 | "Time span of interest (start,stop)"), | |
0433ffbe ACM |
1920 | OPT_END() |
1921 | }; | |
3bca2354 RR |
1922 | const char *const kmem_subcommands[] = { "record", "stat", NULL }; |
1923 | const char *kmem_usage[] = { | |
1924 | NULL, | |
0433ffbe ACM |
1925 | NULL |
1926 | }; | |
2b2b2c68 | 1927 | struct perf_session *session; |
49b8e2be | 1928 | static const char errmsg[] = "No %s allocation events found. Have you run 'perf kmem record --%s'?\n"; |
ecc4c561 ACM |
1929 | int ret = perf_config(kmem_config, NULL); |
1930 | ||
1931 | if (ret) | |
1932 | return ret; | |
2b2b2c68 | 1933 | |
3bca2354 RR |
1934 | argc = parse_options_subcommand(argc, argv, kmem_options, |
1935 | kmem_subcommands, kmem_usage, 0); | |
ba77c9e1 | 1936 | |
90b86a9f | 1937 | if (!argc) |
ba77c9e1 LZ |
1938 | usage_with_options(kmem_usage, kmem_options); |
1939 | ||
0c160d49 NK |
1940 | if (kmem_slab == 0 && kmem_page == 0) { |
1941 | if (kmem_default == KMEM_SLAB) | |
1942 | kmem_slab = 1; | |
1943 | else | |
1944 | kmem_page = 1; | |
1945 | } | |
0d68bc92 | 1946 | |
90b86a9f | 1947 | if (!strncmp(argv[0], "rec", 3)) { |
0a7e6d1b | 1948 | symbol__init(NULL); |
90b86a9f | 1949 | return __cmd_record(argc, argv); |
2b2b2c68 NK |
1950 | } |
1951 | ||
2d4f2799 | 1952 | data.path = input_name; |
28939e1a | 1953 | |
8ceb41d7 | 1954 | kmem_session = session = perf_session__new(&data, false, &perf_kmem); |
2b2b2c68 | 1955 | if (session == NULL) |
52e02834 | 1956 | return -1; |
2b2b2c68 | 1957 | |
ecc4c561 ACM |
1958 | ret = -1; |
1959 | ||
a923e2c4 NK |
1960 | if (kmem_slab) { |
1961 | if (!perf_evlist__find_tracepoint_by_name(session->evlist, | |
1962 | "kmem:kmalloc")) { | |
1963 | pr_err(errmsg, "slab", "slab"); | |
249ca1a8 | 1964 | goto out_delete; |
a923e2c4 NK |
1965 | } |
1966 | } | |
1967 | ||
0d68bc92 | 1968 | if (kmem_page) { |
a923e2c4 | 1969 | struct perf_evsel *evsel; |
0d68bc92 | 1970 | |
a923e2c4 NK |
1971 | evsel = perf_evlist__find_tracepoint_by_name(session->evlist, |
1972 | "kmem:mm_page_alloc"); | |
1973 | if (evsel == NULL) { | |
1974 | pr_err(errmsg, "page", "page"); | |
249ca1a8 | 1975 | goto out_delete; |
0d68bc92 NK |
1976 | } |
1977 | ||
6fed932e | 1978 | kmem_page_size = tep_get_page_size(evsel->tp_format->pevent); |
c9758cc4 | 1979 | symbol_conf.use_callchain = true; |
0d68bc92 NK |
1980 | } |
1981 | ||
0a7e6d1b | 1982 | symbol__init(&session->header.env); |
2b2b2c68 | 1983 | |
2a865bd8 DA |
1984 | if (perf_time__parse_str(&ptime, time_str) != 0) { |
1985 | pr_err("Invalid time string\n"); | |
79f56ebe CJ |
1986 | ret = -EINVAL; |
1987 | goto out_delete; | |
2a865bd8 DA |
1988 | } |
1989 | ||
2b2b2c68 | 1990 | if (!strcmp(argv[0], "stat")) { |
77cfe388 NK |
1991 | setlocale(LC_ALL, ""); |
1992 | ||
4b627957 | 1993 | if (cpu__setup_cpunode_map()) |
2b2b2c68 | 1994 | goto out_delete; |
90b86a9f | 1995 | |
fb4f313d NK |
1996 | if (list_empty(&slab_caller_sort)) |
1997 | setup_slab_sorting(&slab_caller_sort, default_slab_sort); | |
1998 | if (list_empty(&slab_alloc_sort)) | |
1999 | setup_slab_sorting(&slab_alloc_sort, default_slab_sort); | |
2000 | if (list_empty(&page_caller_sort)) | |
2001 | setup_page_sorting(&page_caller_sort, default_page_sort); | |
2002 | if (list_empty(&page_alloc_sort)) | |
2003 | setup_page_sorting(&page_alloc_sort, default_page_sort); | |
2004 | ||
2005 | if (kmem_page) { | |
2006 | setup_page_sorting(&page_alloc_sort_input, | |
2007 | "page,order,migtype,gfp"); | |
2008 | setup_page_sorting(&page_caller_sort_input, | |
2009 | "callsite,order,migtype,gfp"); | |
2010 | } | |
2b2b2c68 | 2011 | ret = __cmd_kmem(session); |
b00eca8c PE |
2012 | } else |
2013 | usage_with_options(kmem_usage, kmem_options); | |
7d0d3945 | 2014 | |
2b2b2c68 NK |
2015 | out_delete: |
2016 | perf_session__delete(session); | |
2017 | ||
2018 | return ret; | |
ba77c9e1 LZ |
2019 | } |
2020 |