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 | ||
278 | static void | |
f48f669d | 279 | process_raw_event(event_t *raw_event __used, void *data, |
ba77c9e1 LZ |
280 | int cpu, u64 timestamp, struct thread *thread) |
281 | { | |
ba77c9e1 LZ |
282 | struct event *event; |
283 | int type; | |
284 | ||
f48f669d | 285 | type = trace_parse_common_type(data); |
ba77c9e1 LZ |
286 | event = trace_find_event(type); |
287 | ||
288 | if (!strcmp(event->name, "kmalloc") || | |
289 | !strcmp(event->name, "kmem_cache_alloc")) { | |
f48f669d | 290 | process_alloc_event(data, event, cpu, timestamp, thread, 0); |
ba77c9e1 LZ |
291 | return; |
292 | } | |
293 | ||
294 | if (!strcmp(event->name, "kmalloc_node") || | |
295 | !strcmp(event->name, "kmem_cache_alloc_node")) { | |
f48f669d | 296 | process_alloc_event(data, event, cpu, timestamp, thread, 1); |
ba77c9e1 LZ |
297 | return; |
298 | } | |
299 | ||
300 | if (!strcmp(event->name, "kfree") || | |
301 | !strcmp(event->name, "kmem_cache_free")) { | |
f48f669d | 302 | process_free_event(data, event, cpu, timestamp, thread); |
ba77c9e1 LZ |
303 | return; |
304 | } | |
305 | } | |
306 | ||
b3165f41 | 307 | static int process_sample_event(event_t *event, struct perf_session *session) |
ba77c9e1 | 308 | { |
180f95e2 OH |
309 | struct sample_data data; |
310 | struct thread *thread; | |
ba77c9e1 | 311 | |
180f95e2 OH |
312 | memset(&data, 0, sizeof(data)); |
313 | data.time = -1; | |
314 | data.cpu = -1; | |
315 | data.period = 1; | |
ba77c9e1 | 316 | |
c019879b | 317 | event__parse_sample(event, session->sample_type, &data); |
ba77c9e1 | 318 | |
0d755034 ACM |
319 | dump_printf("(IP, %d): %d/%d: %#Lx period: %Ld\n", event->header.misc, |
320 | data.pid, data.tid, data.ip, data.period); | |
ba77c9e1 | 321 | |
b3165f41 | 322 | thread = perf_session__findnew(session, event->ip.pid); |
ba77c9e1 LZ |
323 | if (thread == NULL) { |
324 | pr_debug("problem processing %d event, skipping it.\n", | |
325 | event->header.type); | |
326 | return -1; | |
327 | } | |
328 | ||
329 | dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid); | |
330 | ||
f48f669d | 331 | process_raw_event(event, data.raw_data, data.cpu, |
d8bd9e0a | 332 | data.time, thread); |
ba77c9e1 LZ |
333 | |
334 | return 0; | |
335 | } | |
336 | ||
301a0b02 | 337 | static struct perf_event_ops event_ops = { |
587570d4 FW |
338 | .sample = process_sample_event, |
339 | .comm = event__process_comm, | |
340 | .ordered_samples = true, | |
ba77c9e1 LZ |
341 | }; |
342 | ||
ba77c9e1 LZ |
343 | static double fragmentation(unsigned long n_req, unsigned long n_alloc) |
344 | { | |
345 | if (n_alloc == 0) | |
346 | return 0.0; | |
347 | else | |
348 | return 100.0 - (100.0 * n_req / n_alloc); | |
349 | } | |
350 | ||
4aa65636 ACM |
351 | static void __print_result(struct rb_root *root, struct perf_session *session, |
352 | int n_lines, int is_caller) | |
ba77c9e1 LZ |
353 | { |
354 | struct rb_node *next; | |
23346f21 | 355 | struct machine *machine; |
ba77c9e1 | 356 | |
079d3f65 LZ |
357 | printf("%.102s\n", graph_dotted_line); |
358 | printf(" %-34s |", is_caller ? "Callsite": "Alloc Ptr"); | |
47103277 | 359 | printf(" Total_alloc/Per | Total_req/Per | Hit | Ping-pong | Frag\n"); |
079d3f65 | 360 | printf("%.102s\n", graph_dotted_line); |
ba77c9e1 LZ |
361 | |
362 | next = rb_first(root); | |
363 | ||
23346f21 ACM |
364 | machine = perf_session__find_host_machine(session); |
365 | if (!machine) { | |
a1645ce1 ZY |
366 | pr_err("__print_result: couldn't find kernel information\n"); |
367 | return; | |
368 | } | |
ba77c9e1 | 369 | while (next && n_lines--) { |
1b145ae5 ACM |
370 | struct alloc_stat *data = rb_entry(next, struct alloc_stat, |
371 | node); | |
372 | struct symbol *sym = NULL; | |
71cf8b8f | 373 | struct map *map; |
079d3f65 | 374 | char buf[BUFSIZ]; |
1b145ae5 ACM |
375 | u64 addr; |
376 | ||
377 | if (is_caller) { | |
378 | addr = data->call_site; | |
7707b6b6 | 379 | if (!raw_ip) |
5c0541d5 | 380 | sym = machine__find_kernel_function(machine, addr, &map, NULL); |
1b145ae5 ACM |
381 | } else |
382 | addr = data->ptr; | |
383 | ||
384 | if (sym != NULL) | |
079d3f65 | 385 | snprintf(buf, sizeof(buf), "%s+%Lx", sym->name, |
71cf8b8f | 386 | addr - map->unmap_ip(map, sym->start)); |
1b145ae5 | 387 | else |
079d3f65 LZ |
388 | snprintf(buf, sizeof(buf), "%#Lx", addr); |
389 | printf(" %-34s |", buf); | |
ba77c9e1 | 390 | |
47103277 | 391 | printf(" %9llu/%-5lu | %9llu/%-5lu | %8lu | %8lu | %6.3f%%\n", |
079d3f65 | 392 | (unsigned long long)data->bytes_alloc, |
ba77c9e1 LZ |
393 | (unsigned long)data->bytes_alloc / data->hit, |
394 | (unsigned long long)data->bytes_req, | |
395 | (unsigned long)data->bytes_req / data->hit, | |
396 | (unsigned long)data->hit, | |
079d3f65 | 397 | (unsigned long)data->pingpong, |
ba77c9e1 LZ |
398 | fragmentation(data->bytes_req, data->bytes_alloc)); |
399 | ||
400 | next = rb_next(next); | |
401 | } | |
402 | ||
403 | if (n_lines == -1) | |
079d3f65 | 404 | printf(" ... | ... | ... | ... | ... | ... \n"); |
ba77c9e1 | 405 | |
079d3f65 | 406 | printf("%.102s\n", graph_dotted_line); |
ba77c9e1 LZ |
407 | } |
408 | ||
409 | static void print_summary(void) | |
410 | { | |
411 | printf("\nSUMMARY\n=======\n"); | |
412 | printf("Total bytes requested: %lu\n", total_requested); | |
413 | printf("Total bytes allocated: %lu\n", total_allocated); | |
414 | printf("Total bytes wasted on internal fragmentation: %lu\n", | |
415 | total_allocated - total_requested); | |
416 | printf("Internal fragmentation: %f%%\n", | |
417 | fragmentation(total_requested, total_allocated)); | |
7d0d3945 | 418 | printf("Cross CPU allocations: %lu/%lu\n", nr_cross_allocs, nr_allocs); |
ba77c9e1 LZ |
419 | } |
420 | ||
4aa65636 | 421 | static void print_result(struct perf_session *session) |
ba77c9e1 LZ |
422 | { |
423 | if (caller_flag) | |
4aa65636 | 424 | __print_result(&root_caller_sorted, session, caller_lines, 1); |
ba77c9e1 | 425 | if (alloc_flag) |
4aa65636 | 426 | __print_result(&root_alloc_sorted, session, alloc_lines, 0); |
ba77c9e1 LZ |
427 | print_summary(); |
428 | } | |
429 | ||
29b3e152 LZ |
430 | struct sort_dimension { |
431 | const char name[20]; | |
432 | sort_fn_t cmp; | |
433 | struct list_head list; | |
434 | }; | |
435 | ||
436 | static LIST_HEAD(caller_sort); | |
437 | static LIST_HEAD(alloc_sort); | |
438 | ||
ba77c9e1 | 439 | static void sort_insert(struct rb_root *root, struct alloc_stat *data, |
29b3e152 | 440 | struct list_head *sort_list) |
ba77c9e1 LZ |
441 | { |
442 | struct rb_node **new = &(root->rb_node); | |
443 | struct rb_node *parent = NULL; | |
29b3e152 | 444 | struct sort_dimension *sort; |
ba77c9e1 LZ |
445 | |
446 | while (*new) { | |
447 | struct alloc_stat *this; | |
29b3e152 | 448 | int cmp = 0; |
ba77c9e1 LZ |
449 | |
450 | this = rb_entry(*new, struct alloc_stat, node); | |
451 | parent = *new; | |
452 | ||
29b3e152 LZ |
453 | list_for_each_entry(sort, sort_list, list) { |
454 | cmp = sort->cmp(data, this); | |
455 | if (cmp) | |
456 | break; | |
457 | } | |
ba77c9e1 LZ |
458 | |
459 | if (cmp > 0) | |
460 | new = &((*new)->rb_left); | |
461 | else | |
462 | new = &((*new)->rb_right); | |
463 | } | |
464 | ||
465 | rb_link_node(&data->node, parent, new); | |
466 | rb_insert_color(&data->node, root); | |
467 | } | |
468 | ||
469 | static void __sort_result(struct rb_root *root, struct rb_root *root_sorted, | |
29b3e152 | 470 | struct list_head *sort_list) |
ba77c9e1 LZ |
471 | { |
472 | struct rb_node *node; | |
473 | struct alloc_stat *data; | |
474 | ||
475 | for (;;) { | |
476 | node = rb_first(root); | |
477 | if (!node) | |
478 | break; | |
479 | ||
480 | rb_erase(node, root); | |
481 | data = rb_entry(node, struct alloc_stat, node); | |
29b3e152 | 482 | sort_insert(root_sorted, data, sort_list); |
ba77c9e1 LZ |
483 | } |
484 | } | |
485 | ||
486 | static void sort_result(void) | |
487 | { | |
29b3e152 LZ |
488 | __sort_result(&root_alloc_stat, &root_alloc_sorted, &alloc_sort); |
489 | __sort_result(&root_caller_stat, &root_caller_sorted, &caller_sort); | |
ba77c9e1 LZ |
490 | } |
491 | ||
492 | static int __cmd_kmem(void) | |
493 | { | |
d549c769 | 494 | int err = -EINVAL; |
454c407e | 495 | struct perf_session *session = perf_session__new(input_name, O_RDONLY, 0, false); |
4aa65636 ACM |
496 | if (session == NULL) |
497 | return -ENOMEM; | |
498 | ||
e727ca73 ACM |
499 | if (perf_session__create_kernel_maps(session) < 0) |
500 | goto out_delete; | |
501 | ||
d549c769 ACM |
502 | if (!perf_session__has_traces(session, "kmem record")) |
503 | goto out_delete; | |
504 | ||
ba77c9e1 | 505 | setup_pager(); |
4aa65636 ACM |
506 | err = perf_session__process_events(session, &event_ops); |
507 | if (err != 0) | |
508 | goto out_delete; | |
ba77c9e1 | 509 | sort_result(); |
4aa65636 ACM |
510 | print_result(session); |
511 | out_delete: | |
512 | perf_session__delete(session); | |
513 | return err; | |
ba77c9e1 LZ |
514 | } |
515 | ||
516 | static const char * const kmem_usage[] = { | |
90b86a9f | 517 | "perf kmem [<options>] {record|stat}", |
ba77c9e1 LZ |
518 | NULL |
519 | }; | |
520 | ||
ba77c9e1 LZ |
521 | static int ptr_cmp(struct alloc_stat *l, struct alloc_stat *r) |
522 | { | |
523 | if (l->ptr < r->ptr) | |
524 | return -1; | |
525 | else if (l->ptr > r->ptr) | |
526 | return 1; | |
527 | return 0; | |
528 | } | |
529 | ||
29b3e152 LZ |
530 | static struct sort_dimension ptr_sort_dimension = { |
531 | .name = "ptr", | |
532 | .cmp = ptr_cmp, | |
533 | }; | |
534 | ||
ba77c9e1 LZ |
535 | static int callsite_cmp(struct alloc_stat *l, struct alloc_stat *r) |
536 | { | |
537 | if (l->call_site < r->call_site) | |
538 | return -1; | |
539 | else if (l->call_site > r->call_site) | |
540 | return 1; | |
541 | return 0; | |
542 | } | |
543 | ||
29b3e152 LZ |
544 | static struct sort_dimension callsite_sort_dimension = { |
545 | .name = "callsite", | |
546 | .cmp = callsite_cmp, | |
547 | }; | |
548 | ||
f3ced7cd PE |
549 | static int hit_cmp(struct alloc_stat *l, struct alloc_stat *r) |
550 | { | |
551 | if (l->hit < r->hit) | |
552 | return -1; | |
553 | else if (l->hit > r->hit) | |
554 | return 1; | |
555 | return 0; | |
556 | } | |
557 | ||
29b3e152 LZ |
558 | static struct sort_dimension hit_sort_dimension = { |
559 | .name = "hit", | |
560 | .cmp = hit_cmp, | |
561 | }; | |
562 | ||
ba77c9e1 LZ |
563 | static int bytes_cmp(struct alloc_stat *l, struct alloc_stat *r) |
564 | { | |
565 | if (l->bytes_alloc < r->bytes_alloc) | |
566 | return -1; | |
567 | else if (l->bytes_alloc > r->bytes_alloc) | |
568 | return 1; | |
569 | return 0; | |
570 | } | |
571 | ||
29b3e152 LZ |
572 | static struct sort_dimension bytes_sort_dimension = { |
573 | .name = "bytes", | |
574 | .cmp = bytes_cmp, | |
575 | }; | |
576 | ||
f3ced7cd PE |
577 | static int frag_cmp(struct alloc_stat *l, struct alloc_stat *r) |
578 | { | |
579 | double x, y; | |
580 | ||
581 | x = fragmentation(l->bytes_req, l->bytes_alloc); | |
582 | y = fragmentation(r->bytes_req, r->bytes_alloc); | |
583 | ||
584 | if (x < y) | |
585 | return -1; | |
586 | else if (x > y) | |
587 | return 1; | |
588 | return 0; | |
589 | } | |
590 | ||
29b3e152 LZ |
591 | static struct sort_dimension frag_sort_dimension = { |
592 | .name = "frag", | |
593 | .cmp = frag_cmp, | |
594 | }; | |
595 | ||
079d3f65 LZ |
596 | static int pingpong_cmp(struct alloc_stat *l, struct alloc_stat *r) |
597 | { | |
598 | if (l->pingpong < r->pingpong) | |
599 | return -1; | |
600 | else if (l->pingpong > r->pingpong) | |
601 | return 1; | |
602 | return 0; | |
603 | } | |
604 | ||
605 | static struct sort_dimension pingpong_sort_dimension = { | |
606 | .name = "pingpong", | |
607 | .cmp = pingpong_cmp, | |
608 | }; | |
609 | ||
29b3e152 LZ |
610 | static struct sort_dimension *avail_sorts[] = { |
611 | &ptr_sort_dimension, | |
612 | &callsite_sort_dimension, | |
613 | &hit_sort_dimension, | |
614 | &bytes_sort_dimension, | |
615 | &frag_sort_dimension, | |
079d3f65 | 616 | &pingpong_sort_dimension, |
29b3e152 LZ |
617 | }; |
618 | ||
619 | #define NUM_AVAIL_SORTS \ | |
620 | (int)(sizeof(avail_sorts) / sizeof(struct sort_dimension *)) | |
621 | ||
622 | static int sort_dimension__add(const char *tok, struct list_head *list) | |
623 | { | |
624 | struct sort_dimension *sort; | |
625 | int i; | |
626 | ||
627 | for (i = 0; i < NUM_AVAIL_SORTS; i++) { | |
628 | if (!strcmp(avail_sorts[i]->name, tok)) { | |
629 | sort = malloc(sizeof(*sort)); | |
630 | if (!sort) | |
631 | die("malloc"); | |
632 | memcpy(sort, avail_sorts[i], sizeof(*sort)); | |
633 | list_add_tail(&sort->list, list); | |
634 | return 0; | |
635 | } | |
636 | } | |
637 | ||
638 | return -1; | |
639 | } | |
640 | ||
641 | static int setup_sorting(struct list_head *sort_list, const char *arg) | |
642 | { | |
643 | char *tok; | |
644 | char *str = strdup(arg); | |
645 | ||
646 | if (!str) | |
647 | die("strdup"); | |
648 | ||
649 | while (true) { | |
650 | tok = strsep(&str, ","); | |
651 | if (!tok) | |
652 | break; | |
653 | if (sort_dimension__add(tok, sort_list) < 0) { | |
654 | error("Unknown --sort key: '%s'", tok); | |
655 | return -1; | |
656 | } | |
657 | } | |
658 | ||
659 | free(str); | |
660 | return 0; | |
661 | } | |
662 | ||
ba77c9e1 LZ |
663 | static int parse_sort_opt(const struct option *opt __used, |
664 | const char *arg, int unset __used) | |
665 | { | |
ba77c9e1 LZ |
666 | if (!arg) |
667 | return -1; | |
668 | ||
ba77c9e1 | 669 | if (caller_flag > alloc_flag) |
29b3e152 | 670 | return setup_sorting(&caller_sort, arg); |
ba77c9e1 | 671 | else |
29b3e152 | 672 | return setup_sorting(&alloc_sort, arg); |
ba77c9e1 LZ |
673 | |
674 | return 0; | |
675 | } | |
676 | ||
90b86a9f | 677 | static int parse_caller_opt(const struct option *opt __used, |
79312416 | 678 | const char *arg __used, int unset __used) |
ba77c9e1 | 679 | { |
90b86a9f LZ |
680 | caller_flag = (alloc_flag + 1); |
681 | return 0; | |
682 | } | |
ba77c9e1 | 683 | |
90b86a9f | 684 | static int parse_alloc_opt(const struct option *opt __used, |
79312416 | 685 | const char *arg __used, int unset __used) |
90b86a9f LZ |
686 | { |
687 | alloc_flag = (caller_flag + 1); | |
ba77c9e1 LZ |
688 | return 0; |
689 | } | |
690 | ||
691 | static int parse_line_opt(const struct option *opt __used, | |
692 | const char *arg, int unset __used) | |
693 | { | |
694 | int lines; | |
695 | ||
696 | if (!arg) | |
697 | return -1; | |
698 | ||
699 | lines = strtoul(arg, NULL, 10); | |
700 | ||
701 | if (caller_flag > alloc_flag) | |
702 | caller_lines = lines; | |
703 | else | |
704 | alloc_lines = lines; | |
705 | ||
706 | return 0; | |
707 | } | |
708 | ||
709 | static const struct option kmem_options[] = { | |
710 | OPT_STRING('i', "input", &input_name, "file", | |
711 | "input file name"), | |
90b86a9f LZ |
712 | OPT_CALLBACK_NOOPT(0, "caller", NULL, NULL, |
713 | "show per-callsite statistics", | |
714 | parse_caller_opt), | |
715 | OPT_CALLBACK_NOOPT(0, "alloc", NULL, NULL, | |
716 | "show per-allocation statistics", | |
717 | parse_alloc_opt), | |
29b3e152 | 718 | OPT_CALLBACK('s', "sort", NULL, "key[,key2...]", |
079d3f65 | 719 | "sort by keys: ptr, call_site, bytes, hit, pingpong, frag", |
ba77c9e1 LZ |
720 | parse_sort_opt), |
721 | OPT_CALLBACK('l', "line", NULL, "num", | |
90b86a9f | 722 | "show n lines", |
ba77c9e1 | 723 | parse_line_opt), |
7707b6b6 | 724 | OPT_BOOLEAN(0, "raw-ip", &raw_ip, "show raw ip instead of symbol"), |
ba77c9e1 LZ |
725 | OPT_END() |
726 | }; | |
727 | ||
728 | static const char *record_args[] = { | |
729 | "record", | |
730 | "-a", | |
731 | "-R", | |
ba77c9e1 LZ |
732 | "-f", |
733 | "-c", "1", | |
734 | "-e", "kmem:kmalloc", | |
735 | "-e", "kmem:kmalloc_node", | |
736 | "-e", "kmem:kfree", | |
737 | "-e", "kmem:kmem_cache_alloc", | |
738 | "-e", "kmem:kmem_cache_alloc_node", | |
739 | "-e", "kmem:kmem_cache_free", | |
740 | }; | |
741 | ||
742 | static int __cmd_record(int argc, const char **argv) | |
743 | { | |
744 | unsigned int rec_argc, i, j; | |
745 | const char **rec_argv; | |
746 | ||
747 | rec_argc = ARRAY_SIZE(record_args) + argc - 1; | |
748 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
749 | ||
750 | for (i = 0; i < ARRAY_SIZE(record_args); i++) | |
751 | rec_argv[i] = strdup(record_args[i]); | |
752 | ||
753 | for (j = 1; j < (unsigned int)argc; j++, i++) | |
754 | rec_argv[i] = argv[j]; | |
755 | ||
756 | return cmd_record(i, rec_argv, NULL); | |
757 | } | |
758 | ||
759 | int cmd_kmem(int argc, const char **argv, const char *prefix __used) | |
760 | { | |
ba77c9e1 LZ |
761 | argc = parse_options(argc, argv, kmem_options, kmem_usage, 0); |
762 | ||
90b86a9f | 763 | if (!argc) |
ba77c9e1 LZ |
764 | usage_with_options(kmem_usage, kmem_options); |
765 | ||
655000e7 ACM |
766 | symbol__init(); |
767 | ||
90b86a9f LZ |
768 | if (!strncmp(argv[0], "rec", 3)) { |
769 | return __cmd_record(argc, argv); | |
770 | } else if (!strcmp(argv[0], "stat")) { | |
771 | setup_cpunode_map(); | |
772 | ||
773 | if (list_empty(&caller_sort)) | |
774 | setup_sorting(&caller_sort, default_sort_order); | |
775 | if (list_empty(&alloc_sort)) | |
776 | setup_sorting(&alloc_sort, default_sort_order); | |
ba77c9e1 | 777 | |
90b86a9f | 778 | return __cmd_kmem(); |
b00eca8c PE |
779 | } else |
780 | usage_with_options(kmem_usage, kmem_options); | |
7d0d3945 | 781 | |
90b86a9f | 782 | return 0; |
ba77c9e1 LZ |
783 | } |
784 |