Commit | Line | Data |
---|---|---|
ba77c9e1 LZ |
1 | #include "builtin.h" |
2 | #include "perf.h" | |
3 | ||
0f7d2f1b | 4 | #include "util/evlist.h" |
fcf65bf1 | 5 | #include "util/evsel.h" |
ba77c9e1 LZ |
6 | #include "util/util.h" |
7 | #include "util/cache.h" | |
8 | #include "util/symbol.h" | |
9 | #include "util/thread.h" | |
10 | #include "util/header.h" | |
94c744b6 | 11 | #include "util/session.h" |
45694aa7 | 12 | #include "util/tool.h" |
ba77c9e1 LZ |
13 | |
14 | #include "util/parse-options.h" | |
15 | #include "util/trace-event.h" | |
16 | ||
17 | #include "util/debug.h" | |
ba77c9e1 LZ |
18 | |
19 | #include <linux/rbtree.h> | |
8d9233f2 | 20 | #include <linux/string.h> |
ba77c9e1 LZ |
21 | |
22 | struct alloc_stat; | |
23 | typedef int (*sort_fn_t)(struct alloc_stat *, struct alloc_stat *); | |
24 | ||
ba77c9e1 LZ |
25 | static int alloc_flag; |
26 | static int caller_flag; | |
27 | ||
ba77c9e1 LZ |
28 | static int alloc_lines = -1; |
29 | static int caller_lines = -1; | |
30 | ||
7707b6b6 LZ |
31 | static bool raw_ip; |
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 | ||
2814eb05 | 59 | static int init_cpunode_map(void) |
7d0d3945 LZ |
60 | { |
61 | FILE *fp; | |
2814eb05 | 62 | int i, err = -1; |
7d0d3945 LZ |
63 | |
64 | fp = fopen("/sys/devices/system/cpu/kernel_max", "r"); | |
65 | if (!fp) { | |
66 | max_cpu_num = 4096; | |
2814eb05 ACM |
67 | return 0; |
68 | } | |
69 | ||
70 | if (fscanf(fp, "%d", &max_cpu_num) < 1) { | |
71 | pr_err("Failed to read 'kernel_max' from sysfs"); | |
72 | goto out_close; | |
7d0d3945 LZ |
73 | } |
74 | ||
7d0d3945 LZ |
75 | max_cpu_num++; |
76 | ||
77 | cpunode_map = calloc(max_cpu_num, sizeof(int)); | |
2814eb05 ACM |
78 | if (!cpunode_map) { |
79 | pr_err("%s: calloc failed\n", __func__); | |
80 | goto out_close; | |
81 | } | |
82 | ||
7d0d3945 LZ |
83 | for (i = 0; i < max_cpu_num; i++) |
84 | cpunode_map[i] = -1; | |
2814eb05 ACM |
85 | |
86 | err = 0; | |
87 | out_close: | |
7d0d3945 | 88 | fclose(fp); |
2814eb05 | 89 | return err; |
7d0d3945 LZ |
90 | } |
91 | ||
2814eb05 | 92 | static int setup_cpunode_map(void) |
7d0d3945 LZ |
93 | { |
94 | struct dirent *dent1, *dent2; | |
95 | DIR *dir1, *dir2; | |
96 | unsigned int cpu, mem; | |
97 | char buf[PATH_MAX]; | |
98 | ||
2814eb05 ACM |
99 | if (init_cpunode_map()) |
100 | return -1; | |
7d0d3945 LZ |
101 | |
102 | dir1 = opendir(PATH_SYS_NODE); | |
103 | if (!dir1) | |
2814eb05 | 104 | return -1; |
7d0d3945 | 105 | |
659d8cfb UD |
106 | while ((dent1 = readdir(dir1)) != NULL) { |
107 | if (dent1->d_type != DT_DIR || | |
108 | sscanf(dent1->d_name, "node%u", &mem) < 1) | |
7d0d3945 LZ |
109 | continue; |
110 | ||
111 | snprintf(buf, PATH_MAX, "%s/%s", PATH_SYS_NODE, dent1->d_name); | |
112 | dir2 = opendir(buf); | |
113 | if (!dir2) | |
114 | continue; | |
659d8cfb UD |
115 | while ((dent2 = readdir(dir2)) != NULL) { |
116 | if (dent2->d_type != DT_LNK || | |
117 | sscanf(dent2->d_name, "cpu%u", &cpu) < 1) | |
7d0d3945 LZ |
118 | continue; |
119 | cpunode_map[cpu] = mem; | |
120 | } | |
8442da1d | 121 | closedir(dir2); |
7d0d3945 | 122 | } |
8442da1d | 123 | closedir(dir1); |
2814eb05 | 124 | return 0; |
7d0d3945 LZ |
125 | } |
126 | ||
2814eb05 ACM |
127 | static int insert_alloc_stat(unsigned long call_site, unsigned long ptr, |
128 | int bytes_req, int bytes_alloc, int cpu) | |
ba77c9e1 LZ |
129 | { |
130 | struct rb_node **node = &root_alloc_stat.rb_node; | |
131 | struct rb_node *parent = NULL; | |
132 | struct alloc_stat *data = NULL; | |
133 | ||
ba77c9e1 LZ |
134 | while (*node) { |
135 | parent = *node; | |
136 | data = rb_entry(*node, struct alloc_stat, node); | |
137 | ||
138 | if (ptr > data->ptr) | |
139 | node = &(*node)->rb_right; | |
140 | else if (ptr < data->ptr) | |
141 | node = &(*node)->rb_left; | |
142 | else | |
143 | break; | |
144 | } | |
145 | ||
146 | if (data && data->ptr == ptr) { | |
147 | data->hit++; | |
148 | data->bytes_req += bytes_req; | |
4efb5290 | 149 | data->bytes_alloc += bytes_alloc; |
ba77c9e1 LZ |
150 | } else { |
151 | data = malloc(sizeof(*data)); | |
2814eb05 ACM |
152 | if (!data) { |
153 | pr_err("%s: malloc failed\n", __func__); | |
154 | return -1; | |
155 | } | |
ba77c9e1 | 156 | data->ptr = ptr; |
079d3f65 | 157 | data->pingpong = 0; |
ba77c9e1 LZ |
158 | data->hit = 1; |
159 | data->bytes_req = bytes_req; | |
160 | data->bytes_alloc = bytes_alloc; | |
161 | ||
162 | rb_link_node(&data->node, parent, node); | |
163 | rb_insert_color(&data->node, &root_alloc_stat); | |
164 | } | |
079d3f65 LZ |
165 | data->call_site = call_site; |
166 | data->alloc_cpu = cpu; | |
2814eb05 | 167 | return 0; |
ba77c9e1 LZ |
168 | } |
169 | ||
2814eb05 | 170 | static int insert_caller_stat(unsigned long call_site, |
ba77c9e1 LZ |
171 | int bytes_req, int bytes_alloc) |
172 | { | |
173 | struct rb_node **node = &root_caller_stat.rb_node; | |
174 | struct rb_node *parent = NULL; | |
175 | struct alloc_stat *data = NULL; | |
176 | ||
ba77c9e1 LZ |
177 | while (*node) { |
178 | parent = *node; | |
179 | data = rb_entry(*node, struct alloc_stat, node); | |
180 | ||
181 | if (call_site > data->call_site) | |
182 | node = &(*node)->rb_right; | |
183 | else if (call_site < data->call_site) | |
184 | node = &(*node)->rb_left; | |
185 | else | |
186 | break; | |
187 | } | |
188 | ||
189 | if (data && data->call_site == call_site) { | |
190 | data->hit++; | |
191 | data->bytes_req += bytes_req; | |
4efb5290 | 192 | data->bytes_alloc += bytes_alloc; |
ba77c9e1 LZ |
193 | } else { |
194 | data = malloc(sizeof(*data)); | |
2814eb05 ACM |
195 | if (!data) { |
196 | pr_err("%s: malloc failed\n", __func__); | |
197 | return -1; | |
198 | } | |
ba77c9e1 | 199 | data->call_site = call_site; |
079d3f65 | 200 | data->pingpong = 0; |
ba77c9e1 LZ |
201 | data->hit = 1; |
202 | data->bytes_req = bytes_req; | |
203 | data->bytes_alloc = bytes_alloc; | |
204 | ||
205 | rb_link_node(&data->node, parent, node); | |
206 | rb_insert_color(&data->node, &root_caller_stat); | |
207 | } | |
2814eb05 ACM |
208 | |
209 | return 0; | |
ba77c9e1 LZ |
210 | } |
211 | ||
2814eb05 | 212 | static int perf_evsel__process_alloc_event(struct perf_evsel *evsel, |
0f7d2f1b | 213 | struct perf_sample *sample) |
ba77c9e1 | 214 | { |
0f7d2f1b ACM |
215 | unsigned long ptr = perf_evsel__intval(evsel, sample, "ptr"), |
216 | call_site = perf_evsel__intval(evsel, sample, "call_site"); | |
217 | int bytes_req = perf_evsel__intval(evsel, sample, "bytes_req"), | |
218 | bytes_alloc = perf_evsel__intval(evsel, sample, "bytes_alloc"); | |
219 | ||
220 | if (insert_alloc_stat(call_site, ptr, bytes_req, bytes_alloc, sample->cpu) || | |
2814eb05 ACM |
221 | insert_caller_stat(call_site, bytes_req, bytes_alloc)) |
222 | return -1; | |
ba77c9e1 LZ |
223 | |
224 | total_requested += bytes_req; | |
225 | total_allocated += bytes_alloc; | |
7d0d3945 | 226 | |
0f7d2f1b ACM |
227 | nr_allocs++; |
228 | return 0; | |
229 | } | |
230 | ||
231 | static int perf_evsel__process_alloc_node_event(struct perf_evsel *evsel, | |
232 | struct perf_sample *sample) | |
233 | { | |
234 | int ret = perf_evsel__process_alloc_event(evsel, sample); | |
235 | ||
236 | if (!ret) { | |
237 | int node1 = cpunode_map[sample->cpu], | |
238 | node2 = perf_evsel__intval(evsel, sample, "node"); | |
239 | ||
7d0d3945 LZ |
240 | if (node1 != node2) |
241 | nr_cross_allocs++; | |
242 | } | |
0f7d2f1b ACM |
243 | |
244 | return ret; | |
ba77c9e1 LZ |
245 | } |
246 | ||
079d3f65 LZ |
247 | static int ptr_cmp(struct alloc_stat *, struct alloc_stat *); |
248 | static int callsite_cmp(struct alloc_stat *, struct alloc_stat *); | |
249 | ||
250 | static struct alloc_stat *search_alloc_stat(unsigned long ptr, | |
251 | unsigned long call_site, | |
252 | struct rb_root *root, | |
253 | sort_fn_t sort_fn) | |
254 | { | |
255 | struct rb_node *node = root->rb_node; | |
256 | struct alloc_stat key = { .ptr = ptr, .call_site = call_site }; | |
257 | ||
258 | while (node) { | |
259 | struct alloc_stat *data; | |
260 | int cmp; | |
261 | ||
262 | data = rb_entry(node, struct alloc_stat, node); | |
263 | ||
264 | cmp = sort_fn(&key, data); | |
265 | if (cmp < 0) | |
266 | node = node->rb_left; | |
267 | else if (cmp > 0) | |
268 | node = node->rb_right; | |
269 | else | |
270 | return data; | |
271 | } | |
272 | return NULL; | |
273 | } | |
274 | ||
2814eb05 ACM |
275 | static int perf_evsel__process_free_event(struct perf_evsel *evsel, |
276 | struct perf_sample *sample) | |
ba77c9e1 | 277 | { |
0f7d2f1b | 278 | unsigned long ptr = perf_evsel__intval(evsel, sample, "ptr"); |
079d3f65 LZ |
279 | struct alloc_stat *s_alloc, *s_caller; |
280 | ||
079d3f65 LZ |
281 | s_alloc = search_alloc_stat(ptr, 0, &root_alloc_stat, ptr_cmp); |
282 | if (!s_alloc) | |
2814eb05 | 283 | return 0; |
079d3f65 | 284 | |
22ad798c | 285 | if ((short)sample->cpu != s_alloc->alloc_cpu) { |
079d3f65 LZ |
286 | s_alloc->pingpong++; |
287 | ||
288 | s_caller = search_alloc_stat(0, s_alloc->call_site, | |
289 | &root_caller_stat, callsite_cmp); | |
2814eb05 ACM |
290 | if (!s_caller) |
291 | return -1; | |
079d3f65 LZ |
292 | s_caller->pingpong++; |
293 | } | |
294 | s_alloc->alloc_cpu = -1; | |
2814eb05 ACM |
295 | |
296 | return 0; | |
ba77c9e1 LZ |
297 | } |
298 | ||
0f7d2f1b ACM |
299 | typedef int (*tracepoint_handler)(struct perf_evsel *evsel, |
300 | struct perf_sample *sample); | |
ba77c9e1 | 301 | |
1d037ca1 | 302 | static int process_sample_event(struct perf_tool *tool __maybe_unused, |
d20deb64 | 303 | union perf_event *event, |
8115d60c | 304 | struct perf_sample *sample, |
fcf65bf1 | 305 | struct perf_evsel *evsel, |
743eb868 | 306 | struct machine *machine) |
ba77c9e1 | 307 | { |
743eb868 | 308 | struct thread *thread = machine__findnew_thread(machine, event->ip.pid); |
ba77c9e1 | 309 | |
ba77c9e1 LZ |
310 | if (thread == NULL) { |
311 | pr_debug("problem processing %d event, skipping it.\n", | |
312 | event->header.type); | |
313 | return -1; | |
314 | } | |
315 | ||
316 | dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid); | |
317 | ||
0f7d2f1b ACM |
318 | if (evsel->handler.func != NULL) { |
319 | tracepoint_handler f = evsel->handler.func; | |
320 | return f(evsel, sample); | |
321 | } | |
322 | ||
323 | return 0; | |
ba77c9e1 LZ |
324 | } |
325 | ||
fcf65bf1 ACM |
326 | static struct perf_tool perf_kmem = { |
327 | .sample = process_sample_event, | |
328 | .comm = perf_event__process_comm, | |
329 | .ordered_samples = true, | |
ba77c9e1 LZ |
330 | }; |
331 | ||
ba77c9e1 LZ |
332 | static double fragmentation(unsigned long n_req, unsigned long n_alloc) |
333 | { | |
334 | if (n_alloc == 0) | |
335 | return 0.0; | |
336 | else | |
337 | return 100.0 - (100.0 * n_req / n_alloc); | |
338 | } | |
339 | ||
4aa65636 ACM |
340 | static void __print_result(struct rb_root *root, struct perf_session *session, |
341 | int n_lines, int is_caller) | |
ba77c9e1 LZ |
342 | { |
343 | struct rb_node *next; | |
34ba5122 | 344 | struct machine *machine = &session->machines.host; |
ba77c9e1 | 345 | |
079d3f65 LZ |
346 | printf("%.102s\n", graph_dotted_line); |
347 | printf(" %-34s |", is_caller ? "Callsite": "Alloc Ptr"); | |
47103277 | 348 | printf(" Total_alloc/Per | Total_req/Per | Hit | Ping-pong | Frag\n"); |
079d3f65 | 349 | printf("%.102s\n", graph_dotted_line); |
ba77c9e1 LZ |
350 | |
351 | next = rb_first(root); | |
352 | ||
353 | while (next && n_lines--) { | |
1b145ae5 ACM |
354 | struct alloc_stat *data = rb_entry(next, struct alloc_stat, |
355 | node); | |
356 | struct symbol *sym = NULL; | |
71cf8b8f | 357 | struct map *map; |
079d3f65 | 358 | char buf[BUFSIZ]; |
1b145ae5 ACM |
359 | u64 addr; |
360 | ||
361 | if (is_caller) { | |
362 | addr = data->call_site; | |
7707b6b6 | 363 | if (!raw_ip) |
5c0541d5 | 364 | sym = machine__find_kernel_function(machine, addr, &map, NULL); |
1b145ae5 ACM |
365 | } else |
366 | addr = data->ptr; | |
367 | ||
368 | if (sym != NULL) | |
9486aa38 | 369 | snprintf(buf, sizeof(buf), "%s+%" PRIx64 "", sym->name, |
71cf8b8f | 370 | addr - map->unmap_ip(map, sym->start)); |
1b145ae5 | 371 | else |
9486aa38 | 372 | snprintf(buf, sizeof(buf), "%#" PRIx64 "", addr); |
079d3f65 | 373 | printf(" %-34s |", buf); |
ba77c9e1 | 374 | |
47103277 | 375 | printf(" %9llu/%-5lu | %9llu/%-5lu | %8lu | %8lu | %6.3f%%\n", |
079d3f65 | 376 | (unsigned long long)data->bytes_alloc, |
ba77c9e1 LZ |
377 | (unsigned long)data->bytes_alloc / data->hit, |
378 | (unsigned long long)data->bytes_req, | |
379 | (unsigned long)data->bytes_req / data->hit, | |
380 | (unsigned long)data->hit, | |
079d3f65 | 381 | (unsigned long)data->pingpong, |
ba77c9e1 LZ |
382 | fragmentation(data->bytes_req, data->bytes_alloc)); |
383 | ||
384 | next = rb_next(next); | |
385 | } | |
386 | ||
387 | if (n_lines == -1) | |
079d3f65 | 388 | printf(" ... | ... | ... | ... | ... | ... \n"); |
ba77c9e1 | 389 | |
079d3f65 | 390 | printf("%.102s\n", graph_dotted_line); |
ba77c9e1 LZ |
391 | } |
392 | ||
393 | static void print_summary(void) | |
394 | { | |
395 | printf("\nSUMMARY\n=======\n"); | |
396 | printf("Total bytes requested: %lu\n", total_requested); | |
397 | printf("Total bytes allocated: %lu\n", total_allocated); | |
398 | printf("Total bytes wasted on internal fragmentation: %lu\n", | |
399 | total_allocated - total_requested); | |
400 | printf("Internal fragmentation: %f%%\n", | |
401 | fragmentation(total_requested, total_allocated)); | |
7d0d3945 | 402 | printf("Cross CPU allocations: %lu/%lu\n", nr_cross_allocs, nr_allocs); |
ba77c9e1 LZ |
403 | } |
404 | ||
4aa65636 | 405 | static void print_result(struct perf_session *session) |
ba77c9e1 LZ |
406 | { |
407 | if (caller_flag) | |
4aa65636 | 408 | __print_result(&root_caller_sorted, session, caller_lines, 1); |
ba77c9e1 | 409 | if (alloc_flag) |
4aa65636 | 410 | __print_result(&root_alloc_sorted, session, alloc_lines, 0); |
ba77c9e1 LZ |
411 | print_summary(); |
412 | } | |
413 | ||
29b3e152 LZ |
414 | struct sort_dimension { |
415 | const char name[20]; | |
416 | sort_fn_t cmp; | |
417 | struct list_head list; | |
418 | }; | |
419 | ||
420 | static LIST_HEAD(caller_sort); | |
421 | static LIST_HEAD(alloc_sort); | |
422 | ||
ba77c9e1 | 423 | static void sort_insert(struct rb_root *root, struct alloc_stat *data, |
29b3e152 | 424 | struct list_head *sort_list) |
ba77c9e1 LZ |
425 | { |
426 | struct rb_node **new = &(root->rb_node); | |
427 | struct rb_node *parent = NULL; | |
29b3e152 | 428 | struct sort_dimension *sort; |
ba77c9e1 LZ |
429 | |
430 | while (*new) { | |
431 | struct alloc_stat *this; | |
29b3e152 | 432 | int cmp = 0; |
ba77c9e1 LZ |
433 | |
434 | this = rb_entry(*new, struct alloc_stat, node); | |
435 | parent = *new; | |
436 | ||
29b3e152 LZ |
437 | list_for_each_entry(sort, sort_list, list) { |
438 | cmp = sort->cmp(data, this); | |
439 | if (cmp) | |
440 | break; | |
441 | } | |
ba77c9e1 LZ |
442 | |
443 | if (cmp > 0) | |
444 | new = &((*new)->rb_left); | |
445 | else | |
446 | new = &((*new)->rb_right); | |
447 | } | |
448 | ||
449 | rb_link_node(&data->node, parent, new); | |
450 | rb_insert_color(&data->node, root); | |
451 | } | |
452 | ||
453 | static void __sort_result(struct rb_root *root, struct rb_root *root_sorted, | |
29b3e152 | 454 | struct list_head *sort_list) |
ba77c9e1 LZ |
455 | { |
456 | struct rb_node *node; | |
457 | struct alloc_stat *data; | |
458 | ||
459 | for (;;) { | |
460 | node = rb_first(root); | |
461 | if (!node) | |
462 | break; | |
463 | ||
464 | rb_erase(node, root); | |
465 | data = rb_entry(node, struct alloc_stat, node); | |
29b3e152 | 466 | sort_insert(root_sorted, data, sort_list); |
ba77c9e1 LZ |
467 | } |
468 | } | |
469 | ||
470 | static void sort_result(void) | |
471 | { | |
29b3e152 LZ |
472 | __sort_result(&root_alloc_stat, &root_alloc_sorted, &alloc_sort); |
473 | __sort_result(&root_caller_stat, &root_caller_sorted, &caller_sort); | |
ba77c9e1 LZ |
474 | } |
475 | ||
70cb4e96 | 476 | static int __cmd_kmem(void) |
ba77c9e1 | 477 | { |
d549c769 | 478 | int err = -EINVAL; |
da378962 | 479 | struct perf_session *session; |
0f7d2f1b ACM |
480 | const struct perf_evsel_str_handler kmem_tracepoints[] = { |
481 | { "kmem:kmalloc", perf_evsel__process_alloc_event, }, | |
482 | { "kmem:kmem_cache_alloc", perf_evsel__process_alloc_event, }, | |
483 | { "kmem:kmalloc_node", perf_evsel__process_alloc_node_event, }, | |
484 | { "kmem:kmem_cache_alloc_node", perf_evsel__process_alloc_node_event, }, | |
485 | { "kmem:kfree", perf_evsel__process_free_event, }, | |
486 | { "kmem:kmem_cache_free", perf_evsel__process_free_event, }, | |
487 | }; | |
da378962 | 488 | |
fcf65bf1 | 489 | session = perf_session__new(input_name, O_RDONLY, 0, false, &perf_kmem); |
4aa65636 ACM |
490 | if (session == NULL) |
491 | return -ENOMEM; | |
492 | ||
e727ca73 ACM |
493 | if (perf_session__create_kernel_maps(session) < 0) |
494 | goto out_delete; | |
495 | ||
d549c769 ACM |
496 | if (!perf_session__has_traces(session, "kmem record")) |
497 | goto out_delete; | |
498 | ||
0f7d2f1b ACM |
499 | if (perf_session__set_tracepoints_handlers(session, kmem_tracepoints)) { |
500 | pr_err("Initializing perf session tracepoint handlers failed\n"); | |
501 | return -1; | |
502 | } | |
503 | ||
ba77c9e1 | 504 | setup_pager(); |
fcf65bf1 | 505 | err = perf_session__process_events(session, &perf_kmem); |
4aa65636 ACM |
506 | if (err != 0) |
507 | goto out_delete; | |
ba77c9e1 | 508 | sort_result(); |
4aa65636 ACM |
509 | print_result(session); |
510 | out_delete: | |
511 | perf_session__delete(session); | |
512 | return err; | |
ba77c9e1 LZ |
513 | } |
514 | ||
ba77c9e1 LZ |
515 | static int ptr_cmp(struct alloc_stat *l, struct alloc_stat *r) |
516 | { | |
517 | if (l->ptr < r->ptr) | |
518 | return -1; | |
519 | else if (l->ptr > r->ptr) | |
520 | return 1; | |
521 | return 0; | |
522 | } | |
523 | ||
29b3e152 LZ |
524 | static struct sort_dimension ptr_sort_dimension = { |
525 | .name = "ptr", | |
526 | .cmp = ptr_cmp, | |
527 | }; | |
528 | ||
ba77c9e1 LZ |
529 | static int callsite_cmp(struct alloc_stat *l, struct alloc_stat *r) |
530 | { | |
531 | if (l->call_site < r->call_site) | |
532 | return -1; | |
533 | else if (l->call_site > r->call_site) | |
534 | return 1; | |
535 | return 0; | |
536 | } | |
537 | ||
29b3e152 LZ |
538 | static struct sort_dimension callsite_sort_dimension = { |
539 | .name = "callsite", | |
540 | .cmp = callsite_cmp, | |
541 | }; | |
542 | ||
f3ced7cd PE |
543 | static int hit_cmp(struct alloc_stat *l, struct alloc_stat *r) |
544 | { | |
545 | if (l->hit < r->hit) | |
546 | return -1; | |
547 | else if (l->hit > r->hit) | |
548 | return 1; | |
549 | return 0; | |
550 | } | |
551 | ||
29b3e152 LZ |
552 | static struct sort_dimension hit_sort_dimension = { |
553 | .name = "hit", | |
554 | .cmp = hit_cmp, | |
555 | }; | |
556 | ||
ba77c9e1 LZ |
557 | static int bytes_cmp(struct alloc_stat *l, struct alloc_stat *r) |
558 | { | |
559 | if (l->bytes_alloc < r->bytes_alloc) | |
560 | return -1; | |
561 | else if (l->bytes_alloc > r->bytes_alloc) | |
562 | return 1; | |
563 | return 0; | |
564 | } | |
565 | ||
29b3e152 LZ |
566 | static struct sort_dimension bytes_sort_dimension = { |
567 | .name = "bytes", | |
568 | .cmp = bytes_cmp, | |
569 | }; | |
570 | ||
f3ced7cd PE |
571 | static int frag_cmp(struct alloc_stat *l, struct alloc_stat *r) |
572 | { | |
573 | double x, y; | |
574 | ||
575 | x = fragmentation(l->bytes_req, l->bytes_alloc); | |
576 | y = fragmentation(r->bytes_req, r->bytes_alloc); | |
577 | ||
578 | if (x < y) | |
579 | return -1; | |
580 | else if (x > y) | |
581 | return 1; | |
582 | return 0; | |
583 | } | |
584 | ||
29b3e152 LZ |
585 | static struct sort_dimension frag_sort_dimension = { |
586 | .name = "frag", | |
587 | .cmp = frag_cmp, | |
588 | }; | |
589 | ||
079d3f65 LZ |
590 | static int pingpong_cmp(struct alloc_stat *l, struct alloc_stat *r) |
591 | { | |
592 | if (l->pingpong < r->pingpong) | |
593 | return -1; | |
594 | else if (l->pingpong > r->pingpong) | |
595 | return 1; | |
596 | return 0; | |
597 | } | |
598 | ||
599 | static struct sort_dimension pingpong_sort_dimension = { | |
600 | .name = "pingpong", | |
601 | .cmp = pingpong_cmp, | |
602 | }; | |
603 | ||
29b3e152 LZ |
604 | static struct sort_dimension *avail_sorts[] = { |
605 | &ptr_sort_dimension, | |
606 | &callsite_sort_dimension, | |
607 | &hit_sort_dimension, | |
608 | &bytes_sort_dimension, | |
609 | &frag_sort_dimension, | |
079d3f65 | 610 | &pingpong_sort_dimension, |
29b3e152 LZ |
611 | }; |
612 | ||
49e4ba54 | 613 | #define NUM_AVAIL_SORTS ((int)ARRAY_SIZE(avail_sorts)) |
29b3e152 LZ |
614 | |
615 | static int sort_dimension__add(const char *tok, struct list_head *list) | |
616 | { | |
617 | struct sort_dimension *sort; | |
618 | int i; | |
619 | ||
620 | for (i = 0; i < NUM_AVAIL_SORTS; i++) { | |
621 | if (!strcmp(avail_sorts[i]->name, tok)) { | |
8d9233f2 | 622 | sort = memdup(avail_sorts[i], sizeof(*avail_sorts[i])); |
2814eb05 | 623 | if (!sort) { |
8d9233f2 | 624 | pr_err("%s: memdup failed\n", __func__); |
2814eb05 ACM |
625 | return -1; |
626 | } | |
29b3e152 LZ |
627 | list_add_tail(&sort->list, list); |
628 | return 0; | |
629 | } | |
630 | } | |
631 | ||
632 | return -1; | |
633 | } | |
634 | ||
635 | static int setup_sorting(struct list_head *sort_list, const char *arg) | |
636 | { | |
637 | char *tok; | |
638 | char *str = strdup(arg); | |
639 | ||
2814eb05 ACM |
640 | if (!str) { |
641 | pr_err("%s: strdup failed\n", __func__); | |
642 | return -1; | |
643 | } | |
29b3e152 LZ |
644 | |
645 | while (true) { | |
646 | tok = strsep(&str, ","); | |
647 | if (!tok) | |
648 | break; | |
649 | if (sort_dimension__add(tok, sort_list) < 0) { | |
650 | error("Unknown --sort key: '%s'", tok); | |
1b22859d | 651 | free(str); |
29b3e152 LZ |
652 | return -1; |
653 | } | |
654 | } | |
655 | ||
656 | free(str); | |
657 | return 0; | |
658 | } | |
659 | ||
1d037ca1 IT |
660 | static int parse_sort_opt(const struct option *opt __maybe_unused, |
661 | const char *arg, int unset __maybe_unused) | |
ba77c9e1 | 662 | { |
ba77c9e1 LZ |
663 | if (!arg) |
664 | return -1; | |
665 | ||
ba77c9e1 | 666 | if (caller_flag > alloc_flag) |
29b3e152 | 667 | return setup_sorting(&caller_sort, arg); |
ba77c9e1 | 668 | else |
29b3e152 | 669 | return setup_sorting(&alloc_sort, arg); |
ba77c9e1 LZ |
670 | |
671 | return 0; | |
672 | } | |
673 | ||
1d037ca1 IT |
674 | static int parse_caller_opt(const struct option *opt __maybe_unused, |
675 | const char *arg __maybe_unused, | |
676 | int unset __maybe_unused) | |
ba77c9e1 | 677 | { |
90b86a9f LZ |
678 | caller_flag = (alloc_flag + 1); |
679 | return 0; | |
680 | } | |
ba77c9e1 | 681 | |
1d037ca1 IT |
682 | static int parse_alloc_opt(const struct option *opt __maybe_unused, |
683 | const char *arg __maybe_unused, | |
684 | int unset __maybe_unused) | |
90b86a9f LZ |
685 | { |
686 | alloc_flag = (caller_flag + 1); | |
ba77c9e1 LZ |
687 | return 0; |
688 | } | |
689 | ||
1d037ca1 IT |
690 | static int parse_line_opt(const struct option *opt __maybe_unused, |
691 | const char *arg, int unset __maybe_unused) | |
ba77c9e1 LZ |
692 | { |
693 | int lines; | |
694 | ||
695 | if (!arg) | |
696 | return -1; | |
697 | ||
698 | lines = strtoul(arg, NULL, 10); | |
699 | ||
700 | if (caller_flag > alloc_flag) | |
701 | caller_lines = lines; | |
702 | else | |
703 | alloc_lines = lines; | |
704 | ||
705 | return 0; | |
706 | } | |
707 | ||
0433ffbe ACM |
708 | static int __cmd_record(int argc, const char **argv) |
709 | { | |
710 | const char * const record_args[] = { | |
711 | "record", "-a", "-R", "-f", "-c", "1", | |
ba77c9e1 LZ |
712 | "-e", "kmem:kmalloc", |
713 | "-e", "kmem:kmalloc_node", | |
714 | "-e", "kmem:kfree", | |
715 | "-e", "kmem:kmem_cache_alloc", | |
716 | "-e", "kmem:kmem_cache_alloc_node", | |
717 | "-e", "kmem:kmem_cache_free", | |
0433ffbe | 718 | }; |
ba77c9e1 LZ |
719 | unsigned int rec_argc, i, j; |
720 | const char **rec_argv; | |
721 | ||
722 | rec_argc = ARRAY_SIZE(record_args) + argc - 1; | |
723 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
724 | ||
ce47dc56 CS |
725 | if (rec_argv == NULL) |
726 | return -ENOMEM; | |
727 | ||
ba77c9e1 LZ |
728 | for (i = 0; i < ARRAY_SIZE(record_args); i++) |
729 | rec_argv[i] = strdup(record_args[i]); | |
730 | ||
731 | for (j = 1; j < (unsigned int)argc; j++, i++) | |
732 | rec_argv[i] = argv[j]; | |
733 | ||
734 | return cmd_record(i, rec_argv, NULL); | |
735 | } | |
736 | ||
1d037ca1 | 737 | int cmd_kmem(int argc, const char **argv, const char *prefix __maybe_unused) |
ba77c9e1 | 738 | { |
0433ffbe | 739 | const char * const default_sort_order = "frag,hit,bytes"; |
0433ffbe ACM |
740 | const struct option kmem_options[] = { |
741 | OPT_STRING('i', "input", &input_name, "file", "input file name"), | |
742 | OPT_CALLBACK_NOOPT(0, "caller", NULL, NULL, | |
743 | "show per-callsite statistics", parse_caller_opt), | |
744 | OPT_CALLBACK_NOOPT(0, "alloc", NULL, NULL, | |
745 | "show per-allocation statistics", parse_alloc_opt), | |
746 | OPT_CALLBACK('s', "sort", NULL, "key[,key2...]", | |
747 | "sort by keys: ptr, call_site, bytes, hit, pingpong, frag", | |
748 | parse_sort_opt), | |
749 | OPT_CALLBACK('l', "line", NULL, "num", "show n lines", parse_line_opt), | |
750 | OPT_BOOLEAN(0, "raw-ip", &raw_ip, "show raw ip instead of symbol"), | |
751 | OPT_END() | |
752 | }; | |
753 | const char * const kmem_usage[] = { | |
754 | "perf kmem [<options>] {record|stat}", | |
755 | NULL | |
756 | }; | |
ba77c9e1 LZ |
757 | argc = parse_options(argc, argv, kmem_options, kmem_usage, 0); |
758 | ||
90b86a9f | 759 | if (!argc) |
ba77c9e1 LZ |
760 | usage_with_options(kmem_usage, kmem_options); |
761 | ||
655000e7 ACM |
762 | symbol__init(); |
763 | ||
90b86a9f LZ |
764 | if (!strncmp(argv[0], "rec", 3)) { |
765 | return __cmd_record(argc, argv); | |
766 | } else if (!strcmp(argv[0], "stat")) { | |
2814eb05 ACM |
767 | if (setup_cpunode_map()) |
768 | return -1; | |
90b86a9f LZ |
769 | |
770 | if (list_empty(&caller_sort)) | |
771 | setup_sorting(&caller_sort, default_sort_order); | |
772 | if (list_empty(&alloc_sort)) | |
773 | setup_sorting(&alloc_sort, default_sort_order); | |
ba77c9e1 | 774 | |
70cb4e96 | 775 | return __cmd_kmem(); |
b00eca8c PE |
776 | } else |
777 | usage_with_options(kmem_usage, kmem_options); | |
7d0d3945 | 778 | |
90b86a9f | 779 | return 0; |
ba77c9e1 LZ |
780 | } |
781 |