Commit | Line | Data |
---|---|---|
ba77c9e1 LZ |
1 | #include "builtin.h" |
2 | #include "perf.h" | |
3 | ||
4 | #include "util/util.h" | |
5 | #include "util/cache.h" | |
6 | #include "util/symbol.h" | |
7 | #include "util/thread.h" | |
8 | #include "util/header.h" | |
94c744b6 | 9 | #include "util/session.h" |
ba77c9e1 LZ |
10 | |
11 | #include "util/parse-options.h" | |
12 | #include "util/trace-event.h" | |
13 | ||
14 | #include "util/debug.h" | |
ba77c9e1 LZ |
15 | |
16 | #include <linux/rbtree.h> | |
17 | ||
18 | struct alloc_stat; | |
19 | typedef int (*sort_fn_t)(struct alloc_stat *, struct alloc_stat *); | |
20 | ||
21 | static char const *input_name = "perf.data"; | |
22 | ||
ba77c9e1 LZ |
23 | static int alloc_flag; |
24 | static int caller_flag; | |
25 | ||
ba77c9e1 LZ |
26 | static int alloc_lines = -1; |
27 | static int caller_lines = -1; | |
28 | ||
7707b6b6 LZ |
29 | static bool raw_ip; |
30 | ||
29b3e152 LZ |
31 | static char default_sort_order[] = "frag,hit,bytes"; |
32 | ||
7d0d3945 LZ |
33 | static int *cpunode_map; |
34 | static int max_cpu_num; | |
35 | ||
ba77c9e1 | 36 | struct alloc_stat { |
079d3f65 LZ |
37 | u64 call_site; |
38 | u64 ptr; | |
ba77c9e1 LZ |
39 | u64 bytes_req; |
40 | u64 bytes_alloc; | |
41 | u32 hit; | |
079d3f65 LZ |
42 | u32 pingpong; |
43 | ||
44 | short alloc_cpu; | |
ba77c9e1 LZ |
45 | |
46 | struct rb_node node; | |
47 | }; | |
48 | ||
49 | static struct rb_root root_alloc_stat; | |
50 | static struct rb_root root_alloc_sorted; | |
51 | static struct rb_root root_caller_stat; | |
52 | static struct rb_root root_caller_sorted; | |
53 | ||
54 | static unsigned long total_requested, total_allocated; | |
7d0d3945 | 55 | static unsigned long nr_allocs, nr_cross_allocs; |
ba77c9e1 | 56 | |
7d0d3945 LZ |
57 | #define PATH_SYS_NODE "/sys/devices/system/node" |
58 | ||
59 | static void init_cpunode_map(void) | |
60 | { | |
61 | FILE *fp; | |
62 | int i; | |
63 | ||
64 | fp = fopen("/sys/devices/system/cpu/kernel_max", "r"); | |
65 | if (!fp) { | |
66 | max_cpu_num = 4096; | |
67 | return; | |
68 | } | |
69 | ||
70 | if (fscanf(fp, "%d", &max_cpu_num) < 1) | |
71 | die("Failed to read 'kernel_max' from sysfs"); | |
72 | max_cpu_num++; | |
73 | ||
74 | cpunode_map = calloc(max_cpu_num, sizeof(int)); | |
75 | if (!cpunode_map) | |
76 | die("calloc"); | |
77 | for (i = 0; i < max_cpu_num; i++) | |
78 | cpunode_map[i] = -1; | |
79 | fclose(fp); | |
80 | } | |
81 | ||
82 | static void setup_cpunode_map(void) | |
83 | { | |
84 | struct dirent *dent1, *dent2; | |
85 | DIR *dir1, *dir2; | |
86 | unsigned int cpu, mem; | |
87 | char buf[PATH_MAX]; | |
88 | ||
89 | init_cpunode_map(); | |
90 | ||
91 | dir1 = opendir(PATH_SYS_NODE); | |
92 | if (!dir1) | |
93 | return; | |
94 | ||
659d8cfb UD |
95 | while ((dent1 = readdir(dir1)) != NULL) { |
96 | if (dent1->d_type != DT_DIR || | |
97 | sscanf(dent1->d_name, "node%u", &mem) < 1) | |
7d0d3945 LZ |
98 | continue; |
99 | ||
100 | snprintf(buf, PATH_MAX, "%s/%s", PATH_SYS_NODE, dent1->d_name); | |
101 | dir2 = opendir(buf); | |
102 | if (!dir2) | |
103 | continue; | |
659d8cfb UD |
104 | while ((dent2 = readdir(dir2)) != NULL) { |
105 | if (dent2->d_type != DT_LNK || | |
106 | sscanf(dent2->d_name, "cpu%u", &cpu) < 1) | |
7d0d3945 LZ |
107 | continue; |
108 | cpunode_map[cpu] = mem; | |
109 | } | |
110 | } | |
111 | } | |
112 | ||
079d3f65 LZ |
113 | static void insert_alloc_stat(unsigned long call_site, unsigned long ptr, |
114 | int bytes_req, int bytes_alloc, int cpu) | |
ba77c9e1 LZ |
115 | { |
116 | struct rb_node **node = &root_alloc_stat.rb_node; | |
117 | struct rb_node *parent = NULL; | |
118 | struct alloc_stat *data = NULL; | |
119 | ||
ba77c9e1 LZ |
120 | while (*node) { |
121 | parent = *node; | |
122 | data = rb_entry(*node, struct alloc_stat, node); | |
123 | ||
124 | if (ptr > data->ptr) | |
125 | node = &(*node)->rb_right; | |
126 | else if (ptr < data->ptr) | |
127 | node = &(*node)->rb_left; | |
128 | else | |
129 | break; | |
130 | } | |
131 | ||
132 | if (data && data->ptr == ptr) { | |
133 | data->hit++; | |
134 | data->bytes_req += bytes_req; | |
4efb5290 | 135 | data->bytes_alloc += bytes_alloc; |
ba77c9e1 LZ |
136 | } else { |
137 | data = malloc(sizeof(*data)); | |
079d3f65 LZ |
138 | if (!data) |
139 | die("malloc"); | |
ba77c9e1 | 140 | data->ptr = ptr; |
079d3f65 | 141 | data->pingpong = 0; |
ba77c9e1 LZ |
142 | data->hit = 1; |
143 | data->bytes_req = bytes_req; | |
144 | data->bytes_alloc = bytes_alloc; | |
145 | ||
146 | rb_link_node(&data->node, parent, node); | |
147 | rb_insert_color(&data->node, &root_alloc_stat); | |
148 | } | |
079d3f65 LZ |
149 | data->call_site = call_site; |
150 | data->alloc_cpu = cpu; | |
ba77c9e1 LZ |
151 | } |
152 | ||
153 | static void insert_caller_stat(unsigned long call_site, | |
154 | int bytes_req, int bytes_alloc) | |
155 | { | |
156 | struct rb_node **node = &root_caller_stat.rb_node; | |
157 | struct rb_node *parent = NULL; | |
158 | struct alloc_stat *data = NULL; | |
159 | ||
ba77c9e1 LZ |
160 | while (*node) { |
161 | parent = *node; | |
162 | data = rb_entry(*node, struct alloc_stat, node); | |
163 | ||
164 | if (call_site > data->call_site) | |
165 | node = &(*node)->rb_right; | |
166 | else if (call_site < data->call_site) | |
167 | node = &(*node)->rb_left; | |
168 | else | |
169 | break; | |
170 | } | |
171 | ||
172 | if (data && data->call_site == call_site) { | |
173 | data->hit++; | |
174 | data->bytes_req += bytes_req; | |
4efb5290 | 175 | data->bytes_alloc += bytes_alloc; |
ba77c9e1 LZ |
176 | } else { |
177 | data = malloc(sizeof(*data)); | |
079d3f65 LZ |
178 | if (!data) |
179 | die("malloc"); | |
ba77c9e1 | 180 | data->call_site = call_site; |
079d3f65 | 181 | data->pingpong = 0; |
ba77c9e1 LZ |
182 | data->hit = 1; |
183 | data->bytes_req = bytes_req; | |
184 | data->bytes_alloc = bytes_alloc; | |
185 | ||
186 | rb_link_node(&data->node, parent, node); | |
187 | rb_insert_color(&data->node, &root_caller_stat); | |
188 | } | |
189 | } | |
190 | ||
f48f669d | 191 | static void process_alloc_event(void *data, |
ba77c9e1 | 192 | struct event *event, |
7d0d3945 | 193 | int cpu, |
ba77c9e1 LZ |
194 | u64 timestamp __used, |
195 | struct thread *thread __used, | |
7d0d3945 | 196 | int node) |
ba77c9e1 LZ |
197 | { |
198 | unsigned long call_site; | |
199 | unsigned long ptr; | |
200 | int bytes_req; | |
201 | int bytes_alloc; | |
7d0d3945 | 202 | int node1, node2; |
ba77c9e1 | 203 | |
f48f669d XG |
204 | ptr = raw_field_value(event, "ptr", data); |
205 | call_site = raw_field_value(event, "call_site", data); | |
206 | bytes_req = raw_field_value(event, "bytes_req", data); | |
207 | bytes_alloc = raw_field_value(event, "bytes_alloc", data); | |
ba77c9e1 | 208 | |
079d3f65 | 209 | insert_alloc_stat(call_site, ptr, bytes_req, bytes_alloc, cpu); |
ba77c9e1 LZ |
210 | insert_caller_stat(call_site, bytes_req, bytes_alloc); |
211 | ||
212 | total_requested += bytes_req; | |
213 | total_allocated += bytes_alloc; | |
7d0d3945 LZ |
214 | |
215 | if (node) { | |
216 | node1 = cpunode_map[cpu]; | |
f48f669d | 217 | node2 = raw_field_value(event, "node", data); |
7d0d3945 LZ |
218 | if (node1 != node2) |
219 | nr_cross_allocs++; | |
220 | } | |
221 | nr_allocs++; | |
ba77c9e1 LZ |
222 | } |
223 | ||
079d3f65 LZ |
224 | static int ptr_cmp(struct alloc_stat *, struct alloc_stat *); |
225 | static int callsite_cmp(struct alloc_stat *, struct alloc_stat *); | |
226 | ||
227 | static struct alloc_stat *search_alloc_stat(unsigned long ptr, | |
228 | unsigned long call_site, | |
229 | struct rb_root *root, | |
230 | sort_fn_t sort_fn) | |
231 | { | |
232 | struct rb_node *node = root->rb_node; | |
233 | struct alloc_stat key = { .ptr = ptr, .call_site = call_site }; | |
234 | ||
235 | while (node) { | |
236 | struct alloc_stat *data; | |
237 | int cmp; | |
238 | ||
239 | data = rb_entry(node, struct alloc_stat, node); | |
240 | ||
241 | cmp = sort_fn(&key, data); | |
242 | if (cmp < 0) | |
243 | node = node->rb_left; | |
244 | else if (cmp > 0) | |
245 | node = node->rb_right; | |
246 | else | |
247 | return data; | |
248 | } | |
249 | return NULL; | |
250 | } | |
251 | ||
f48f669d | 252 | static void process_free_event(void *data, |
079d3f65 LZ |
253 | struct event *event, |
254 | int cpu, | |
ba77c9e1 LZ |
255 | u64 timestamp __used, |
256 | struct thread *thread __used) | |
257 | { | |
079d3f65 LZ |
258 | unsigned long ptr; |
259 | struct alloc_stat *s_alloc, *s_caller; | |
260 | ||
f48f669d | 261 | ptr = raw_field_value(event, "ptr", data); |
079d3f65 LZ |
262 | |
263 | s_alloc = search_alloc_stat(ptr, 0, &root_alloc_stat, ptr_cmp); | |
264 | if (!s_alloc) | |
265 | return; | |
266 | ||
267 | if (cpu != s_alloc->alloc_cpu) { | |
268 | s_alloc->pingpong++; | |
269 | ||
270 | s_caller = search_alloc_stat(0, s_alloc->call_site, | |
271 | &root_caller_stat, callsite_cmp); | |
272 | assert(s_caller); | |
273 | s_caller->pingpong++; | |
274 | } | |
275 | s_alloc->alloc_cpu = -1; | |
ba77c9e1 LZ |
276 | } |
277 | ||
8115d60c ACM |
278 | static void process_raw_event(union perf_event *raw_event __used, void *data, |
279 | int cpu, u64 timestamp, struct thread *thread) | |
ba77c9e1 | 280 | { |
ba77c9e1 LZ |
281 | struct event *event; |
282 | int type; | |
283 | ||
f48f669d | 284 | type = trace_parse_common_type(data); |
ba77c9e1 LZ |
285 | event = trace_find_event(type); |
286 | ||
287 | if (!strcmp(event->name, "kmalloc") || | |
288 | !strcmp(event->name, "kmem_cache_alloc")) { | |
f48f669d | 289 | process_alloc_event(data, event, cpu, timestamp, thread, 0); |
ba77c9e1 LZ |
290 | return; |
291 | } | |
292 | ||
293 | if (!strcmp(event->name, "kmalloc_node") || | |
294 | !strcmp(event->name, "kmem_cache_alloc_node")) { | |
f48f669d | 295 | process_alloc_event(data, event, cpu, timestamp, thread, 1); |
ba77c9e1 LZ |
296 | return; |
297 | } | |
298 | ||
299 | if (!strcmp(event->name, "kfree") || | |
300 | !strcmp(event->name, "kmem_cache_free")) { | |
f48f669d | 301 | process_free_event(data, event, cpu, timestamp, thread); |
ba77c9e1 LZ |
302 | return; |
303 | } | |
304 | } | |
305 | ||
8115d60c ACM |
306 | static int process_sample_event(union perf_event *event, |
307 | struct perf_sample *sample, | |
9e69c210 | 308 | struct perf_evsel *evsel __used, |
640c03ce | 309 | struct perf_session *session) |
ba77c9e1 | 310 | { |
640c03ce | 311 | struct thread *thread = perf_session__findnew(session, event->ip.pid); |
ba77c9e1 | 312 | |
ba77c9e1 LZ |
313 | if (thread == NULL) { |
314 | pr_debug("problem processing %d event, skipping it.\n", | |
315 | event->header.type); | |
316 | return -1; | |
317 | } | |
318 | ||
319 | dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid); | |
320 | ||
640c03ce ACM |
321 | process_raw_event(event, sample->raw_data, sample->cpu, |
322 | sample->time, thread); | |
ba77c9e1 LZ |
323 | |
324 | return 0; | |
325 | } | |
326 | ||
301a0b02 | 327 | static struct perf_event_ops event_ops = { |
587570d4 | 328 | .sample = process_sample_event, |
8115d60c | 329 | .comm = perf_event__process_comm, |
587570d4 | 330 | .ordered_samples = true, |
ba77c9e1 LZ |
331 | }; |
332 | ||
ba77c9e1 LZ |
333 | static double fragmentation(unsigned long n_req, unsigned long n_alloc) |
334 | { | |
335 | if (n_alloc == 0) | |
336 | return 0.0; | |
337 | else | |
338 | return 100.0 - (100.0 * n_req / n_alloc); | |
339 | } | |
340 | ||
4aa65636 ACM |
341 | static void __print_result(struct rb_root *root, struct perf_session *session, |
342 | int n_lines, int is_caller) | |
ba77c9e1 LZ |
343 | { |
344 | struct rb_node *next; | |
23346f21 | 345 | struct machine *machine; |
ba77c9e1 | 346 | |
079d3f65 LZ |
347 | printf("%.102s\n", graph_dotted_line); |
348 | printf(" %-34s |", is_caller ? "Callsite": "Alloc Ptr"); | |
47103277 | 349 | printf(" Total_alloc/Per | Total_req/Per | Hit | Ping-pong | Frag\n"); |
079d3f65 | 350 | printf("%.102s\n", graph_dotted_line); |
ba77c9e1 LZ |
351 | |
352 | next = rb_first(root); | |
353 | ||
23346f21 ACM |
354 | machine = perf_session__find_host_machine(session); |
355 | if (!machine) { | |
a1645ce1 ZY |
356 | pr_err("__print_result: couldn't find kernel information\n"); |
357 | return; | |
358 | } | |
ba77c9e1 | 359 | while (next && n_lines--) { |
1b145ae5 ACM |
360 | struct alloc_stat *data = rb_entry(next, struct alloc_stat, |
361 | node); | |
362 | struct symbol *sym = NULL; | |
71cf8b8f | 363 | struct map *map; |
079d3f65 | 364 | char buf[BUFSIZ]; |
1b145ae5 ACM |
365 | u64 addr; |
366 | ||
367 | if (is_caller) { | |
368 | addr = data->call_site; | |
7707b6b6 | 369 | if (!raw_ip) |
5c0541d5 | 370 | sym = machine__find_kernel_function(machine, addr, &map, NULL); |
1b145ae5 ACM |
371 | } else |
372 | addr = data->ptr; | |
373 | ||
374 | if (sym != NULL) | |
9486aa38 | 375 | snprintf(buf, sizeof(buf), "%s+%" PRIx64 "", sym->name, |
71cf8b8f | 376 | addr - map->unmap_ip(map, sym->start)); |
1b145ae5 | 377 | else |
9486aa38 | 378 | snprintf(buf, sizeof(buf), "%#" PRIx64 "", addr); |
079d3f65 | 379 | printf(" %-34s |", buf); |
ba77c9e1 | 380 | |
47103277 | 381 | printf(" %9llu/%-5lu | %9llu/%-5lu | %8lu | %8lu | %6.3f%%\n", |
079d3f65 | 382 | (unsigned long long)data->bytes_alloc, |
ba77c9e1 LZ |
383 | (unsigned long)data->bytes_alloc / data->hit, |
384 | (unsigned long long)data->bytes_req, | |
385 | (unsigned long)data->bytes_req / data->hit, | |
386 | (unsigned long)data->hit, | |
079d3f65 | 387 | (unsigned long)data->pingpong, |
ba77c9e1 LZ |
388 | fragmentation(data->bytes_req, data->bytes_alloc)); |
389 | ||
390 | next = rb_next(next); | |
391 | } | |
392 | ||
393 | if (n_lines == -1) | |
079d3f65 | 394 | printf(" ... | ... | ... | ... | ... | ... \n"); |
ba77c9e1 | 395 | |
079d3f65 | 396 | printf("%.102s\n", graph_dotted_line); |
ba77c9e1 LZ |
397 | } |
398 | ||
399 | static void print_summary(void) | |
400 | { | |
401 | printf("\nSUMMARY\n=======\n"); | |
402 | printf("Total bytes requested: %lu\n", total_requested); | |
403 | printf("Total bytes allocated: %lu\n", total_allocated); | |
404 | printf("Total bytes wasted on internal fragmentation: %lu\n", | |
405 | total_allocated - total_requested); | |
406 | printf("Internal fragmentation: %f%%\n", | |
407 | fragmentation(total_requested, total_allocated)); | |
7d0d3945 | 408 | printf("Cross CPU allocations: %lu/%lu\n", nr_cross_allocs, nr_allocs); |
ba77c9e1 LZ |
409 | } |
410 | ||
4aa65636 | 411 | static void print_result(struct perf_session *session) |
ba77c9e1 LZ |
412 | { |
413 | if (caller_flag) | |
4aa65636 | 414 | __print_result(&root_caller_sorted, session, caller_lines, 1); |
ba77c9e1 | 415 | if (alloc_flag) |
4aa65636 | 416 | __print_result(&root_alloc_sorted, session, alloc_lines, 0); |
ba77c9e1 LZ |
417 | print_summary(); |
418 | } | |
419 | ||
29b3e152 LZ |
420 | struct sort_dimension { |
421 | const char name[20]; | |
422 | sort_fn_t cmp; | |
423 | struct list_head list; | |
424 | }; | |
425 | ||
426 | static LIST_HEAD(caller_sort); | |
427 | static LIST_HEAD(alloc_sort); | |
428 | ||
ba77c9e1 | 429 | static void sort_insert(struct rb_root *root, struct alloc_stat *data, |
29b3e152 | 430 | struct list_head *sort_list) |
ba77c9e1 LZ |
431 | { |
432 | struct rb_node **new = &(root->rb_node); | |
433 | struct rb_node *parent = NULL; | |
29b3e152 | 434 | struct sort_dimension *sort; |
ba77c9e1 LZ |
435 | |
436 | while (*new) { | |
437 | struct alloc_stat *this; | |
29b3e152 | 438 | int cmp = 0; |
ba77c9e1 LZ |
439 | |
440 | this = rb_entry(*new, struct alloc_stat, node); | |
441 | parent = *new; | |
442 | ||
29b3e152 LZ |
443 | list_for_each_entry(sort, sort_list, list) { |
444 | cmp = sort->cmp(data, this); | |
445 | if (cmp) | |
446 | break; | |
447 | } | |
ba77c9e1 LZ |
448 | |
449 | if (cmp > 0) | |
450 | new = &((*new)->rb_left); | |
451 | else | |
452 | new = &((*new)->rb_right); | |
453 | } | |
454 | ||
455 | rb_link_node(&data->node, parent, new); | |
456 | rb_insert_color(&data->node, root); | |
457 | } | |
458 | ||
459 | static void __sort_result(struct rb_root *root, struct rb_root *root_sorted, | |
29b3e152 | 460 | struct list_head *sort_list) |
ba77c9e1 LZ |
461 | { |
462 | struct rb_node *node; | |
463 | struct alloc_stat *data; | |
464 | ||
465 | for (;;) { | |
466 | node = rb_first(root); | |
467 | if (!node) | |
468 | break; | |
469 | ||
470 | rb_erase(node, root); | |
471 | data = rb_entry(node, struct alloc_stat, node); | |
29b3e152 | 472 | sort_insert(root_sorted, data, sort_list); |
ba77c9e1 LZ |
473 | } |
474 | } | |
475 | ||
476 | static void sort_result(void) | |
477 | { | |
29b3e152 LZ |
478 | __sort_result(&root_alloc_stat, &root_alloc_sorted, &alloc_sort); |
479 | __sort_result(&root_caller_stat, &root_caller_sorted, &caller_sort); | |
ba77c9e1 LZ |
480 | } |
481 | ||
482 | static int __cmd_kmem(void) | |
483 | { | |
d549c769 | 484 | int err = -EINVAL; |
21ef97f0 IM |
485 | struct perf_session *session = perf_session__new(input_name, O_RDONLY, |
486 | 0, false, &event_ops); | |
4aa65636 ACM |
487 | if (session == NULL) |
488 | return -ENOMEM; | |
489 | ||
e727ca73 ACM |
490 | if (perf_session__create_kernel_maps(session) < 0) |
491 | goto out_delete; | |
492 | ||
d549c769 ACM |
493 | if (!perf_session__has_traces(session, "kmem record")) |
494 | goto out_delete; | |
495 | ||
ba77c9e1 | 496 | setup_pager(); |
4aa65636 ACM |
497 | err = perf_session__process_events(session, &event_ops); |
498 | if (err != 0) | |
499 | goto out_delete; | |
ba77c9e1 | 500 | sort_result(); |
4aa65636 ACM |
501 | print_result(session); |
502 | out_delete: | |
503 | perf_session__delete(session); | |
504 | return err; | |
ba77c9e1 LZ |
505 | } |
506 | ||
507 | static const char * const kmem_usage[] = { | |
90b86a9f | 508 | "perf kmem [<options>] {record|stat}", |
ba77c9e1 LZ |
509 | NULL |
510 | }; | |
511 | ||
ba77c9e1 LZ |
512 | static int ptr_cmp(struct alloc_stat *l, struct alloc_stat *r) |
513 | { | |
514 | if (l->ptr < r->ptr) | |
515 | return -1; | |
516 | else if (l->ptr > r->ptr) | |
517 | return 1; | |
518 | return 0; | |
519 | } | |
520 | ||
29b3e152 LZ |
521 | static struct sort_dimension ptr_sort_dimension = { |
522 | .name = "ptr", | |
523 | .cmp = ptr_cmp, | |
524 | }; | |
525 | ||
ba77c9e1 LZ |
526 | static int callsite_cmp(struct alloc_stat *l, struct alloc_stat *r) |
527 | { | |
528 | if (l->call_site < r->call_site) | |
529 | return -1; | |
530 | else if (l->call_site > r->call_site) | |
531 | return 1; | |
532 | return 0; | |
533 | } | |
534 | ||
29b3e152 LZ |
535 | static struct sort_dimension callsite_sort_dimension = { |
536 | .name = "callsite", | |
537 | .cmp = callsite_cmp, | |
538 | }; | |
539 | ||
f3ced7cd PE |
540 | static int hit_cmp(struct alloc_stat *l, struct alloc_stat *r) |
541 | { | |
542 | if (l->hit < r->hit) | |
543 | return -1; | |
544 | else if (l->hit > r->hit) | |
545 | return 1; | |
546 | return 0; | |
547 | } | |
548 | ||
29b3e152 LZ |
549 | static struct sort_dimension hit_sort_dimension = { |
550 | .name = "hit", | |
551 | .cmp = hit_cmp, | |
552 | }; | |
553 | ||
ba77c9e1 LZ |
554 | static int bytes_cmp(struct alloc_stat *l, struct alloc_stat *r) |
555 | { | |
556 | if (l->bytes_alloc < r->bytes_alloc) | |
557 | return -1; | |
558 | else if (l->bytes_alloc > r->bytes_alloc) | |
559 | return 1; | |
560 | return 0; | |
561 | } | |
562 | ||
29b3e152 LZ |
563 | static struct sort_dimension bytes_sort_dimension = { |
564 | .name = "bytes", | |
565 | .cmp = bytes_cmp, | |
566 | }; | |
567 | ||
f3ced7cd PE |
568 | static int frag_cmp(struct alloc_stat *l, struct alloc_stat *r) |
569 | { | |
570 | double x, y; | |
571 | ||
572 | x = fragmentation(l->bytes_req, l->bytes_alloc); | |
573 | y = fragmentation(r->bytes_req, r->bytes_alloc); | |
574 | ||
575 | if (x < y) | |
576 | return -1; | |
577 | else if (x > y) | |
578 | return 1; | |
579 | return 0; | |
580 | } | |
581 | ||
29b3e152 LZ |
582 | static struct sort_dimension frag_sort_dimension = { |
583 | .name = "frag", | |
584 | .cmp = frag_cmp, | |
585 | }; | |
586 | ||
079d3f65 LZ |
587 | static int pingpong_cmp(struct alloc_stat *l, struct alloc_stat *r) |
588 | { | |
589 | if (l->pingpong < r->pingpong) | |
590 | return -1; | |
591 | else if (l->pingpong > r->pingpong) | |
592 | return 1; | |
593 | return 0; | |
594 | } | |
595 | ||
596 | static struct sort_dimension pingpong_sort_dimension = { | |
597 | .name = "pingpong", | |
598 | .cmp = pingpong_cmp, | |
599 | }; | |
600 | ||
29b3e152 LZ |
601 | static struct sort_dimension *avail_sorts[] = { |
602 | &ptr_sort_dimension, | |
603 | &callsite_sort_dimension, | |
604 | &hit_sort_dimension, | |
605 | &bytes_sort_dimension, | |
606 | &frag_sort_dimension, | |
079d3f65 | 607 | &pingpong_sort_dimension, |
29b3e152 LZ |
608 | }; |
609 | ||
610 | #define NUM_AVAIL_SORTS \ | |
611 | (int)(sizeof(avail_sorts) / sizeof(struct sort_dimension *)) | |
612 | ||
613 | static int sort_dimension__add(const char *tok, struct list_head *list) | |
614 | { | |
615 | struct sort_dimension *sort; | |
616 | int i; | |
617 | ||
618 | for (i = 0; i < NUM_AVAIL_SORTS; i++) { | |
619 | if (!strcmp(avail_sorts[i]->name, tok)) { | |
620 | sort = malloc(sizeof(*sort)); | |
621 | if (!sort) | |
622 | die("malloc"); | |
623 | memcpy(sort, avail_sorts[i], sizeof(*sort)); | |
624 | list_add_tail(&sort->list, list); | |
625 | return 0; | |
626 | } | |
627 | } | |
628 | ||
629 | return -1; | |
630 | } | |
631 | ||
632 | static int setup_sorting(struct list_head *sort_list, const char *arg) | |
633 | { | |
634 | char *tok; | |
635 | char *str = strdup(arg); | |
636 | ||
637 | if (!str) | |
638 | die("strdup"); | |
639 | ||
640 | while (true) { | |
641 | tok = strsep(&str, ","); | |
642 | if (!tok) | |
643 | break; | |
644 | if (sort_dimension__add(tok, sort_list) < 0) { | |
645 | error("Unknown --sort key: '%s'", tok); | |
646 | return -1; | |
647 | } | |
648 | } | |
649 | ||
650 | free(str); | |
651 | return 0; | |
652 | } | |
653 | ||
ba77c9e1 LZ |
654 | static int parse_sort_opt(const struct option *opt __used, |
655 | const char *arg, int unset __used) | |
656 | { | |
ba77c9e1 LZ |
657 | if (!arg) |
658 | return -1; | |
659 | ||
ba77c9e1 | 660 | if (caller_flag > alloc_flag) |
29b3e152 | 661 | return setup_sorting(&caller_sort, arg); |
ba77c9e1 | 662 | else |
29b3e152 | 663 | return setup_sorting(&alloc_sort, arg); |
ba77c9e1 LZ |
664 | |
665 | return 0; | |
666 | } | |
667 | ||
90b86a9f | 668 | static int parse_caller_opt(const struct option *opt __used, |
79312416 | 669 | const char *arg __used, int unset __used) |
ba77c9e1 | 670 | { |
90b86a9f LZ |
671 | caller_flag = (alloc_flag + 1); |
672 | return 0; | |
673 | } | |
ba77c9e1 | 674 | |
90b86a9f | 675 | static int parse_alloc_opt(const struct option *opt __used, |
79312416 | 676 | const char *arg __used, int unset __used) |
90b86a9f LZ |
677 | { |
678 | alloc_flag = (caller_flag + 1); | |
ba77c9e1 LZ |
679 | return 0; |
680 | } | |
681 | ||
682 | static int parse_line_opt(const struct option *opt __used, | |
683 | const char *arg, int unset __used) | |
684 | { | |
685 | int lines; | |
686 | ||
687 | if (!arg) | |
688 | return -1; | |
689 | ||
690 | lines = strtoul(arg, NULL, 10); | |
691 | ||
692 | if (caller_flag > alloc_flag) | |
693 | caller_lines = lines; | |
694 | else | |
695 | alloc_lines = lines; | |
696 | ||
697 | return 0; | |
698 | } | |
699 | ||
700 | static const struct option kmem_options[] = { | |
701 | OPT_STRING('i', "input", &input_name, "file", | |
702 | "input file name"), | |
90b86a9f LZ |
703 | OPT_CALLBACK_NOOPT(0, "caller", NULL, NULL, |
704 | "show per-callsite statistics", | |
705 | parse_caller_opt), | |
706 | OPT_CALLBACK_NOOPT(0, "alloc", NULL, NULL, | |
707 | "show per-allocation statistics", | |
708 | parse_alloc_opt), | |
29b3e152 | 709 | OPT_CALLBACK('s', "sort", NULL, "key[,key2...]", |
079d3f65 | 710 | "sort by keys: ptr, call_site, bytes, hit, pingpong, frag", |
ba77c9e1 LZ |
711 | parse_sort_opt), |
712 | OPT_CALLBACK('l', "line", NULL, "num", | |
90b86a9f | 713 | "show n lines", |
ba77c9e1 | 714 | parse_line_opt), |
7707b6b6 | 715 | OPT_BOOLEAN(0, "raw-ip", &raw_ip, "show raw ip instead of symbol"), |
ba77c9e1 LZ |
716 | OPT_END() |
717 | }; | |
718 | ||
719 | static const char *record_args[] = { | |
720 | "record", | |
721 | "-a", | |
722 | "-R", | |
ba77c9e1 LZ |
723 | "-f", |
724 | "-c", "1", | |
725 | "-e", "kmem:kmalloc", | |
726 | "-e", "kmem:kmalloc_node", | |
727 | "-e", "kmem:kfree", | |
728 | "-e", "kmem:kmem_cache_alloc", | |
729 | "-e", "kmem:kmem_cache_alloc_node", | |
730 | "-e", "kmem:kmem_cache_free", | |
731 | }; | |
732 | ||
733 | static int __cmd_record(int argc, const char **argv) | |
734 | { | |
735 | unsigned int rec_argc, i, j; | |
736 | const char **rec_argv; | |
737 | ||
738 | rec_argc = ARRAY_SIZE(record_args) + argc - 1; | |
739 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
740 | ||
ce47dc56 CS |
741 | if (rec_argv == NULL) |
742 | return -ENOMEM; | |
743 | ||
ba77c9e1 LZ |
744 | for (i = 0; i < ARRAY_SIZE(record_args); i++) |
745 | rec_argv[i] = strdup(record_args[i]); | |
746 | ||
747 | for (j = 1; j < (unsigned int)argc; j++, i++) | |
748 | rec_argv[i] = argv[j]; | |
749 | ||
750 | return cmd_record(i, rec_argv, NULL); | |
751 | } | |
752 | ||
753 | int cmd_kmem(int argc, const char **argv, const char *prefix __used) | |
754 | { | |
ba77c9e1 LZ |
755 | argc = parse_options(argc, argv, kmem_options, kmem_usage, 0); |
756 | ||
90b86a9f | 757 | if (!argc) |
ba77c9e1 LZ |
758 | usage_with_options(kmem_usage, kmem_options); |
759 | ||
655000e7 ACM |
760 | symbol__init(); |
761 | ||
90b86a9f LZ |
762 | if (!strncmp(argv[0], "rec", 3)) { |
763 | return __cmd_record(argc, argv); | |
764 | } else if (!strcmp(argv[0], "stat")) { | |
765 | setup_cpunode_map(); | |
766 | ||
767 | if (list_empty(&caller_sort)) | |
768 | setup_sorting(&caller_sort, default_sort_order); | |
769 | if (list_empty(&alloc_sort)) | |
770 | setup_sorting(&alloc_sort, default_sort_order); | |
ba77c9e1 | 771 | |
90b86a9f | 772 | return __cmd_kmem(); |
b00eca8c PE |
773 | } else |
774 | usage_with_options(kmem_usage, kmem_options); | |
7d0d3945 | 775 | |
90b86a9f | 776 | return 0; |
ba77c9e1 LZ |
777 | } |
778 |