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Commit | Line | Data |
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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" | |
f5fc1412 | 16 | #include "util/data.h" |
ba77c9e1 LZ |
17 | |
18 | #include "util/debug.h" | |
ba77c9e1 LZ |
19 | |
20 | #include <linux/rbtree.h> | |
8d9233f2 | 21 | #include <linux/string.h> |
ba77c9e1 LZ |
22 | |
23 | struct alloc_stat; | |
24 | typedef int (*sort_fn_t)(struct alloc_stat *, struct alloc_stat *); | |
25 | ||
ba77c9e1 LZ |
26 | static int alloc_flag; |
27 | static int caller_flag; | |
28 | ||
ba77c9e1 LZ |
29 | static int alloc_lines = -1; |
30 | static int caller_lines = -1; | |
31 | ||
7707b6b6 LZ |
32 | static bool raw_ip; |
33 | ||
7d0d3945 LZ |
34 | static int *cpunode_map; |
35 | static int max_cpu_num; | |
36 | ||
ba77c9e1 | 37 | struct alloc_stat { |
079d3f65 LZ |
38 | u64 call_site; |
39 | u64 ptr; | |
ba77c9e1 LZ |
40 | u64 bytes_req; |
41 | u64 bytes_alloc; | |
42 | u32 hit; | |
079d3f65 LZ |
43 | u32 pingpong; |
44 | ||
45 | short alloc_cpu; | |
ba77c9e1 LZ |
46 | |
47 | struct rb_node node; | |
48 | }; | |
49 | ||
50 | static struct rb_root root_alloc_stat; | |
51 | static struct rb_root root_alloc_sorted; | |
52 | static struct rb_root root_caller_stat; | |
53 | static struct rb_root root_caller_sorted; | |
54 | ||
55 | static unsigned long total_requested, total_allocated; | |
7d0d3945 | 56 | static unsigned long nr_allocs, nr_cross_allocs; |
ba77c9e1 | 57 | |
7d0d3945 LZ |
58 | #define PATH_SYS_NODE "/sys/devices/system/node" |
59 | ||
2814eb05 | 60 | static int init_cpunode_map(void) |
7d0d3945 LZ |
61 | { |
62 | FILE *fp; | |
2814eb05 | 63 | int i, err = -1; |
7d0d3945 LZ |
64 | |
65 | fp = fopen("/sys/devices/system/cpu/kernel_max", "r"); | |
66 | if (!fp) { | |
67 | max_cpu_num = 4096; | |
2814eb05 ACM |
68 | return 0; |
69 | } | |
70 | ||
71 | if (fscanf(fp, "%d", &max_cpu_num) < 1) { | |
72 | pr_err("Failed to read 'kernel_max' from sysfs"); | |
73 | goto out_close; | |
7d0d3945 LZ |
74 | } |
75 | ||
7d0d3945 LZ |
76 | max_cpu_num++; |
77 | ||
78 | cpunode_map = calloc(max_cpu_num, sizeof(int)); | |
2814eb05 ACM |
79 | if (!cpunode_map) { |
80 | pr_err("%s: calloc failed\n", __func__); | |
81 | goto out_close; | |
82 | } | |
83 | ||
7d0d3945 LZ |
84 | for (i = 0; i < max_cpu_num; i++) |
85 | cpunode_map[i] = -1; | |
2814eb05 ACM |
86 | |
87 | err = 0; | |
88 | out_close: | |
7d0d3945 | 89 | fclose(fp); |
2814eb05 | 90 | return err; |
7d0d3945 LZ |
91 | } |
92 | ||
2814eb05 | 93 | static int setup_cpunode_map(void) |
7d0d3945 LZ |
94 | { |
95 | struct dirent *dent1, *dent2; | |
96 | DIR *dir1, *dir2; | |
97 | unsigned int cpu, mem; | |
98 | char buf[PATH_MAX]; | |
99 | ||
2814eb05 ACM |
100 | if (init_cpunode_map()) |
101 | return -1; | |
7d0d3945 LZ |
102 | |
103 | dir1 = opendir(PATH_SYS_NODE); | |
104 | if (!dir1) | |
4921e320 | 105 | return 0; |
7d0d3945 | 106 | |
659d8cfb UD |
107 | while ((dent1 = readdir(dir1)) != NULL) { |
108 | if (dent1->d_type != DT_DIR || | |
109 | sscanf(dent1->d_name, "node%u", &mem) < 1) | |
7d0d3945 LZ |
110 | continue; |
111 | ||
112 | snprintf(buf, PATH_MAX, "%s/%s", PATH_SYS_NODE, dent1->d_name); | |
113 | dir2 = opendir(buf); | |
114 | if (!dir2) | |
115 | continue; | |
659d8cfb UD |
116 | while ((dent2 = readdir(dir2)) != NULL) { |
117 | if (dent2->d_type != DT_LNK || | |
118 | sscanf(dent2->d_name, "cpu%u", &cpu) < 1) | |
7d0d3945 LZ |
119 | continue; |
120 | cpunode_map[cpu] = mem; | |
121 | } | |
8442da1d | 122 | closedir(dir2); |
7d0d3945 | 123 | } |
8442da1d | 124 | closedir(dir1); |
2814eb05 | 125 | return 0; |
7d0d3945 LZ |
126 | } |
127 | ||
2814eb05 ACM |
128 | static int insert_alloc_stat(unsigned long call_site, unsigned long ptr, |
129 | int bytes_req, int bytes_alloc, int cpu) | |
ba77c9e1 LZ |
130 | { |
131 | struct rb_node **node = &root_alloc_stat.rb_node; | |
132 | struct rb_node *parent = NULL; | |
133 | struct alloc_stat *data = NULL; | |
134 | ||
ba77c9e1 LZ |
135 | while (*node) { |
136 | parent = *node; | |
137 | data = rb_entry(*node, struct alloc_stat, node); | |
138 | ||
139 | if (ptr > data->ptr) | |
140 | node = &(*node)->rb_right; | |
141 | else if (ptr < data->ptr) | |
142 | node = &(*node)->rb_left; | |
143 | else | |
144 | break; | |
145 | } | |
146 | ||
147 | if (data && data->ptr == ptr) { | |
148 | data->hit++; | |
149 | data->bytes_req += bytes_req; | |
4efb5290 | 150 | data->bytes_alloc += bytes_alloc; |
ba77c9e1 LZ |
151 | } else { |
152 | data = malloc(sizeof(*data)); | |
2814eb05 ACM |
153 | if (!data) { |
154 | pr_err("%s: malloc failed\n", __func__); | |
155 | return -1; | |
156 | } | |
ba77c9e1 | 157 | data->ptr = ptr; |
079d3f65 | 158 | data->pingpong = 0; |
ba77c9e1 LZ |
159 | data->hit = 1; |
160 | data->bytes_req = bytes_req; | |
161 | data->bytes_alloc = bytes_alloc; | |
162 | ||
163 | rb_link_node(&data->node, parent, node); | |
164 | rb_insert_color(&data->node, &root_alloc_stat); | |
165 | } | |
079d3f65 LZ |
166 | data->call_site = call_site; |
167 | data->alloc_cpu = cpu; | |
2814eb05 | 168 | return 0; |
ba77c9e1 LZ |
169 | } |
170 | ||
2814eb05 | 171 | static int insert_caller_stat(unsigned long call_site, |
ba77c9e1 LZ |
172 | int bytes_req, int bytes_alloc) |
173 | { | |
174 | struct rb_node **node = &root_caller_stat.rb_node; | |
175 | struct rb_node *parent = NULL; | |
176 | struct alloc_stat *data = NULL; | |
177 | ||
ba77c9e1 LZ |
178 | while (*node) { |
179 | parent = *node; | |
180 | data = rb_entry(*node, struct alloc_stat, node); | |
181 | ||
182 | if (call_site > data->call_site) | |
183 | node = &(*node)->rb_right; | |
184 | else if (call_site < data->call_site) | |
185 | node = &(*node)->rb_left; | |
186 | else | |
187 | break; | |
188 | } | |
189 | ||
190 | if (data && data->call_site == call_site) { | |
191 | data->hit++; | |
192 | data->bytes_req += bytes_req; | |
4efb5290 | 193 | data->bytes_alloc += bytes_alloc; |
ba77c9e1 LZ |
194 | } else { |
195 | data = malloc(sizeof(*data)); | |
2814eb05 ACM |
196 | if (!data) { |
197 | pr_err("%s: malloc failed\n", __func__); | |
198 | return -1; | |
199 | } | |
ba77c9e1 | 200 | data->call_site = call_site; |
079d3f65 | 201 | data->pingpong = 0; |
ba77c9e1 LZ |
202 | data->hit = 1; |
203 | data->bytes_req = bytes_req; | |
204 | data->bytes_alloc = bytes_alloc; | |
205 | ||
206 | rb_link_node(&data->node, parent, node); | |
207 | rb_insert_color(&data->node, &root_caller_stat); | |
208 | } | |
2814eb05 ACM |
209 | |
210 | return 0; | |
ba77c9e1 LZ |
211 | } |
212 | ||
2814eb05 | 213 | static int perf_evsel__process_alloc_event(struct perf_evsel *evsel, |
0f7d2f1b | 214 | struct perf_sample *sample) |
ba77c9e1 | 215 | { |
0f7d2f1b ACM |
216 | unsigned long ptr = perf_evsel__intval(evsel, sample, "ptr"), |
217 | call_site = perf_evsel__intval(evsel, sample, "call_site"); | |
218 | int bytes_req = perf_evsel__intval(evsel, sample, "bytes_req"), | |
219 | bytes_alloc = perf_evsel__intval(evsel, sample, "bytes_alloc"); | |
220 | ||
221 | if (insert_alloc_stat(call_site, ptr, bytes_req, bytes_alloc, sample->cpu) || | |
2814eb05 ACM |
222 | insert_caller_stat(call_site, bytes_req, bytes_alloc)) |
223 | return -1; | |
ba77c9e1 LZ |
224 | |
225 | total_requested += bytes_req; | |
226 | total_allocated += bytes_alloc; | |
7d0d3945 | 227 | |
0f7d2f1b ACM |
228 | nr_allocs++; |
229 | return 0; | |
230 | } | |
231 | ||
232 | static int perf_evsel__process_alloc_node_event(struct perf_evsel *evsel, | |
233 | struct perf_sample *sample) | |
234 | { | |
235 | int ret = perf_evsel__process_alloc_event(evsel, sample); | |
236 | ||
237 | if (!ret) { | |
238 | int node1 = cpunode_map[sample->cpu], | |
239 | node2 = perf_evsel__intval(evsel, sample, "node"); | |
240 | ||
7d0d3945 LZ |
241 | if (node1 != node2) |
242 | nr_cross_allocs++; | |
243 | } | |
0f7d2f1b ACM |
244 | |
245 | return ret; | |
ba77c9e1 LZ |
246 | } |
247 | ||
079d3f65 LZ |
248 | static int ptr_cmp(struct alloc_stat *, struct alloc_stat *); |
249 | static int callsite_cmp(struct alloc_stat *, struct alloc_stat *); | |
250 | ||
251 | static struct alloc_stat *search_alloc_stat(unsigned long ptr, | |
252 | unsigned long call_site, | |
253 | struct rb_root *root, | |
254 | sort_fn_t sort_fn) | |
255 | { | |
256 | struct rb_node *node = root->rb_node; | |
257 | struct alloc_stat key = { .ptr = ptr, .call_site = call_site }; | |
258 | ||
259 | while (node) { | |
260 | struct alloc_stat *data; | |
261 | int cmp; | |
262 | ||
263 | data = rb_entry(node, struct alloc_stat, node); | |
264 | ||
265 | cmp = sort_fn(&key, data); | |
266 | if (cmp < 0) | |
267 | node = node->rb_left; | |
268 | else if (cmp > 0) | |
269 | node = node->rb_right; | |
270 | else | |
271 | return data; | |
272 | } | |
273 | return NULL; | |
274 | } | |
275 | ||
2814eb05 ACM |
276 | static int perf_evsel__process_free_event(struct perf_evsel *evsel, |
277 | struct perf_sample *sample) | |
ba77c9e1 | 278 | { |
0f7d2f1b | 279 | unsigned long ptr = perf_evsel__intval(evsel, sample, "ptr"); |
079d3f65 LZ |
280 | struct alloc_stat *s_alloc, *s_caller; |
281 | ||
079d3f65 LZ |
282 | s_alloc = search_alloc_stat(ptr, 0, &root_alloc_stat, ptr_cmp); |
283 | if (!s_alloc) | |
2814eb05 | 284 | return 0; |
079d3f65 | 285 | |
22ad798c | 286 | if ((short)sample->cpu != s_alloc->alloc_cpu) { |
079d3f65 LZ |
287 | s_alloc->pingpong++; |
288 | ||
289 | s_caller = search_alloc_stat(0, s_alloc->call_site, | |
290 | &root_caller_stat, callsite_cmp); | |
2814eb05 ACM |
291 | if (!s_caller) |
292 | return -1; | |
079d3f65 LZ |
293 | s_caller->pingpong++; |
294 | } | |
295 | s_alloc->alloc_cpu = -1; | |
2814eb05 ACM |
296 | |
297 | return 0; | |
ba77c9e1 LZ |
298 | } |
299 | ||
0f7d2f1b ACM |
300 | typedef int (*tracepoint_handler)(struct perf_evsel *evsel, |
301 | struct perf_sample *sample); | |
ba77c9e1 | 302 | |
1d037ca1 | 303 | static int process_sample_event(struct perf_tool *tool __maybe_unused, |
d20deb64 | 304 | union perf_event *event, |
8115d60c | 305 | struct perf_sample *sample, |
fcf65bf1 | 306 | struct perf_evsel *evsel, |
743eb868 | 307 | struct machine *machine) |
ba77c9e1 | 308 | { |
ef89325f AH |
309 | struct thread *thread = machine__findnew_thread(machine, sample->pid, |
310 | sample->pid); | |
ba77c9e1 | 311 | |
ba77c9e1 LZ |
312 | if (thread == NULL) { |
313 | pr_debug("problem processing %d event, skipping it.\n", | |
314 | event->header.type); | |
315 | return -1; | |
316 | } | |
317 | ||
b9c5143a | 318 | dump_printf(" ... thread: %s:%d\n", thread__comm_str(thread), thread->tid); |
ba77c9e1 | 319 | |
744a9719 ACM |
320 | if (evsel->handler != NULL) { |
321 | tracepoint_handler f = evsel->handler; | |
0f7d2f1b ACM |
322 | return f(evsel, sample); |
323 | } | |
324 | ||
325 | return 0; | |
ba77c9e1 LZ |
326 | } |
327 | ||
fcf65bf1 ACM |
328 | static struct perf_tool perf_kmem = { |
329 | .sample = process_sample_event, | |
330 | .comm = perf_event__process_comm, | |
331 | .ordered_samples = true, | |
ba77c9e1 LZ |
332 | }; |
333 | ||
ba77c9e1 LZ |
334 | static double fragmentation(unsigned long n_req, unsigned long n_alloc) |
335 | { | |
336 | if (n_alloc == 0) | |
337 | return 0.0; | |
338 | else | |
339 | return 100.0 - (100.0 * n_req / n_alloc); | |
340 | } | |
341 | ||
4aa65636 ACM |
342 | static void __print_result(struct rb_root *root, struct perf_session *session, |
343 | int n_lines, int is_caller) | |
ba77c9e1 LZ |
344 | { |
345 | struct rb_node *next; | |
34ba5122 | 346 | struct machine *machine = &session->machines.host; |
ba77c9e1 | 347 | |
079d3f65 LZ |
348 | printf("%.102s\n", graph_dotted_line); |
349 | printf(" %-34s |", is_caller ? "Callsite": "Alloc Ptr"); | |
47103277 | 350 | printf(" Total_alloc/Per | Total_req/Per | Hit | Ping-pong | Frag\n"); |
079d3f65 | 351 | printf("%.102s\n", graph_dotted_line); |
ba77c9e1 LZ |
352 | |
353 | next = rb_first(root); | |
354 | ||
355 | while (next && n_lines--) { | |
1b145ae5 ACM |
356 | struct alloc_stat *data = rb_entry(next, struct alloc_stat, |
357 | node); | |
358 | struct symbol *sym = NULL; | |
71cf8b8f | 359 | struct map *map; |
079d3f65 | 360 | char buf[BUFSIZ]; |
1b145ae5 ACM |
361 | u64 addr; |
362 | ||
363 | if (is_caller) { | |
364 | addr = data->call_site; | |
7707b6b6 | 365 | if (!raw_ip) |
5c0541d5 | 366 | sym = machine__find_kernel_function(machine, addr, &map, NULL); |
1b145ae5 ACM |
367 | } else |
368 | addr = data->ptr; | |
369 | ||
370 | if (sym != NULL) | |
9486aa38 | 371 | snprintf(buf, sizeof(buf), "%s+%" PRIx64 "", sym->name, |
71cf8b8f | 372 | addr - map->unmap_ip(map, sym->start)); |
1b145ae5 | 373 | else |
9486aa38 | 374 | snprintf(buf, sizeof(buf), "%#" PRIx64 "", addr); |
079d3f65 | 375 | printf(" %-34s |", buf); |
ba77c9e1 | 376 | |
47103277 | 377 | printf(" %9llu/%-5lu | %9llu/%-5lu | %8lu | %8lu | %6.3f%%\n", |
079d3f65 | 378 | (unsigned long long)data->bytes_alloc, |
ba77c9e1 LZ |
379 | (unsigned long)data->bytes_alloc / data->hit, |
380 | (unsigned long long)data->bytes_req, | |
381 | (unsigned long)data->bytes_req / data->hit, | |
382 | (unsigned long)data->hit, | |
079d3f65 | 383 | (unsigned long)data->pingpong, |
ba77c9e1 LZ |
384 | fragmentation(data->bytes_req, data->bytes_alloc)); |
385 | ||
386 | next = rb_next(next); | |
387 | } | |
388 | ||
389 | if (n_lines == -1) | |
079d3f65 | 390 | printf(" ... | ... | ... | ... | ... | ... \n"); |
ba77c9e1 | 391 | |
079d3f65 | 392 | printf("%.102s\n", graph_dotted_line); |
ba77c9e1 LZ |
393 | } |
394 | ||
395 | static void print_summary(void) | |
396 | { | |
397 | printf("\nSUMMARY\n=======\n"); | |
398 | printf("Total bytes requested: %lu\n", total_requested); | |
399 | printf("Total bytes allocated: %lu\n", total_allocated); | |
400 | printf("Total bytes wasted on internal fragmentation: %lu\n", | |
401 | total_allocated - total_requested); | |
402 | printf("Internal fragmentation: %f%%\n", | |
403 | fragmentation(total_requested, total_allocated)); | |
7d0d3945 | 404 | printf("Cross CPU allocations: %lu/%lu\n", nr_cross_allocs, nr_allocs); |
ba77c9e1 LZ |
405 | } |
406 | ||
4aa65636 | 407 | static void print_result(struct perf_session *session) |
ba77c9e1 LZ |
408 | { |
409 | if (caller_flag) | |
4aa65636 | 410 | __print_result(&root_caller_sorted, session, caller_lines, 1); |
ba77c9e1 | 411 | if (alloc_flag) |
4aa65636 | 412 | __print_result(&root_alloc_sorted, session, alloc_lines, 0); |
ba77c9e1 LZ |
413 | print_summary(); |
414 | } | |
415 | ||
29b3e152 LZ |
416 | struct sort_dimension { |
417 | const char name[20]; | |
418 | sort_fn_t cmp; | |
419 | struct list_head list; | |
420 | }; | |
421 | ||
422 | static LIST_HEAD(caller_sort); | |
423 | static LIST_HEAD(alloc_sort); | |
424 | ||
ba77c9e1 | 425 | static void sort_insert(struct rb_root *root, struct alloc_stat *data, |
29b3e152 | 426 | struct list_head *sort_list) |
ba77c9e1 LZ |
427 | { |
428 | struct rb_node **new = &(root->rb_node); | |
429 | struct rb_node *parent = NULL; | |
29b3e152 | 430 | struct sort_dimension *sort; |
ba77c9e1 LZ |
431 | |
432 | while (*new) { | |
433 | struct alloc_stat *this; | |
29b3e152 | 434 | int cmp = 0; |
ba77c9e1 LZ |
435 | |
436 | this = rb_entry(*new, struct alloc_stat, node); | |
437 | parent = *new; | |
438 | ||
29b3e152 LZ |
439 | list_for_each_entry(sort, sort_list, list) { |
440 | cmp = sort->cmp(data, this); | |
441 | if (cmp) | |
442 | break; | |
443 | } | |
ba77c9e1 LZ |
444 | |
445 | if (cmp > 0) | |
446 | new = &((*new)->rb_left); | |
447 | else | |
448 | new = &((*new)->rb_right); | |
449 | } | |
450 | ||
451 | rb_link_node(&data->node, parent, new); | |
452 | rb_insert_color(&data->node, root); | |
453 | } | |
454 | ||
455 | static void __sort_result(struct rb_root *root, struct rb_root *root_sorted, | |
29b3e152 | 456 | struct list_head *sort_list) |
ba77c9e1 LZ |
457 | { |
458 | struct rb_node *node; | |
459 | struct alloc_stat *data; | |
460 | ||
461 | for (;;) { | |
462 | node = rb_first(root); | |
463 | if (!node) | |
464 | break; | |
465 | ||
466 | rb_erase(node, root); | |
467 | data = rb_entry(node, struct alloc_stat, node); | |
29b3e152 | 468 | sort_insert(root_sorted, data, sort_list); |
ba77c9e1 LZ |
469 | } |
470 | } | |
471 | ||
472 | static void sort_result(void) | |
473 | { | |
29b3e152 LZ |
474 | __sort_result(&root_alloc_stat, &root_alloc_sorted, &alloc_sort); |
475 | __sort_result(&root_caller_stat, &root_caller_sorted, &caller_sort); | |
ba77c9e1 LZ |
476 | } |
477 | ||
70cb4e96 | 478 | static int __cmd_kmem(void) |
ba77c9e1 | 479 | { |
d549c769 | 480 | int err = -EINVAL; |
da378962 | 481 | struct perf_session *session; |
0f7d2f1b ACM |
482 | const struct perf_evsel_str_handler kmem_tracepoints[] = { |
483 | { "kmem:kmalloc", perf_evsel__process_alloc_event, }, | |
484 | { "kmem:kmem_cache_alloc", perf_evsel__process_alloc_event, }, | |
485 | { "kmem:kmalloc_node", perf_evsel__process_alloc_node_event, }, | |
486 | { "kmem:kmem_cache_alloc_node", perf_evsel__process_alloc_node_event, }, | |
487 | { "kmem:kfree", perf_evsel__process_free_event, }, | |
488 | { "kmem:kmem_cache_free", perf_evsel__process_free_event, }, | |
489 | }; | |
f5fc1412 JO |
490 | struct perf_data_file file = { |
491 | .path = input_name, | |
492 | .mode = PERF_DATA_MODE_READ, | |
493 | }; | |
da378962 | 494 | |
f5fc1412 | 495 | session = perf_session__new(&file, false, &perf_kmem); |
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 | ||
0f7d2f1b ACM |
505 | if (perf_session__set_tracepoints_handlers(session, kmem_tracepoints)) { |
506 | pr_err("Initializing perf session tracepoint handlers failed\n"); | |
507 | return -1; | |
508 | } | |
509 | ||
ba77c9e1 | 510 | setup_pager(); |
fcf65bf1 | 511 | err = perf_session__process_events(session, &perf_kmem); |
4aa65636 ACM |
512 | if (err != 0) |
513 | goto out_delete; | |
ba77c9e1 | 514 | sort_result(); |
4aa65636 ACM |
515 | print_result(session); |
516 | out_delete: | |
517 | perf_session__delete(session); | |
518 | return err; | |
ba77c9e1 LZ |
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 | ||
49e4ba54 | 619 | #define NUM_AVAIL_SORTS ((int)ARRAY_SIZE(avail_sorts)) |
29b3e152 LZ |
620 | |
621 | static int sort_dimension__add(const char *tok, struct list_head *list) | |
622 | { | |
623 | struct sort_dimension *sort; | |
624 | int i; | |
625 | ||
626 | for (i = 0; i < NUM_AVAIL_SORTS; i++) { | |
627 | if (!strcmp(avail_sorts[i]->name, tok)) { | |
8d9233f2 | 628 | sort = memdup(avail_sorts[i], sizeof(*avail_sorts[i])); |
2814eb05 | 629 | if (!sort) { |
8d9233f2 | 630 | pr_err("%s: memdup failed\n", __func__); |
2814eb05 ACM |
631 | return -1; |
632 | } | |
29b3e152 LZ |
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 | ||
2814eb05 ACM |
646 | if (!str) { |
647 | pr_err("%s: strdup failed\n", __func__); | |
648 | return -1; | |
649 | } | |
29b3e152 LZ |
650 | |
651 | while (true) { | |
652 | tok = strsep(&str, ","); | |
653 | if (!tok) | |
654 | break; | |
655 | if (sort_dimension__add(tok, sort_list) < 0) { | |
656 | error("Unknown --sort key: '%s'", tok); | |
1b22859d | 657 | free(str); |
29b3e152 LZ |
658 | return -1; |
659 | } | |
660 | } | |
661 | ||
662 | free(str); | |
663 | return 0; | |
664 | } | |
665 | ||
1d037ca1 IT |
666 | static int parse_sort_opt(const struct option *opt __maybe_unused, |
667 | const char *arg, int unset __maybe_unused) | |
ba77c9e1 | 668 | { |
ba77c9e1 LZ |
669 | if (!arg) |
670 | return -1; | |
671 | ||
ba77c9e1 | 672 | if (caller_flag > alloc_flag) |
29b3e152 | 673 | return setup_sorting(&caller_sort, arg); |
ba77c9e1 | 674 | else |
29b3e152 | 675 | return setup_sorting(&alloc_sort, arg); |
ba77c9e1 LZ |
676 | |
677 | return 0; | |
678 | } | |
679 | ||
1d037ca1 IT |
680 | static int parse_caller_opt(const struct option *opt __maybe_unused, |
681 | const char *arg __maybe_unused, | |
682 | int unset __maybe_unused) | |
ba77c9e1 | 683 | { |
90b86a9f LZ |
684 | caller_flag = (alloc_flag + 1); |
685 | return 0; | |
686 | } | |
ba77c9e1 | 687 | |
1d037ca1 IT |
688 | static int parse_alloc_opt(const struct option *opt __maybe_unused, |
689 | const char *arg __maybe_unused, | |
690 | int unset __maybe_unused) | |
90b86a9f LZ |
691 | { |
692 | alloc_flag = (caller_flag + 1); | |
ba77c9e1 LZ |
693 | return 0; |
694 | } | |
695 | ||
1d037ca1 IT |
696 | static int parse_line_opt(const struct option *opt __maybe_unused, |
697 | const char *arg, int unset __maybe_unused) | |
ba77c9e1 LZ |
698 | { |
699 | int lines; | |
700 | ||
701 | if (!arg) | |
702 | return -1; | |
703 | ||
704 | lines = strtoul(arg, NULL, 10); | |
705 | ||
706 | if (caller_flag > alloc_flag) | |
707 | caller_lines = lines; | |
708 | else | |
709 | alloc_lines = lines; | |
710 | ||
711 | return 0; | |
712 | } | |
713 | ||
0433ffbe ACM |
714 | static int __cmd_record(int argc, const char **argv) |
715 | { | |
716 | const char * const record_args[] = { | |
4a4d371a | 717 | "record", "-a", "-R", "-c", "1", |
ba77c9e1 LZ |
718 | "-e", "kmem:kmalloc", |
719 | "-e", "kmem:kmalloc_node", | |
720 | "-e", "kmem:kfree", | |
721 | "-e", "kmem:kmem_cache_alloc", | |
722 | "-e", "kmem:kmem_cache_alloc_node", | |
723 | "-e", "kmem:kmem_cache_free", | |
0433ffbe | 724 | }; |
ba77c9e1 LZ |
725 | unsigned int rec_argc, i, j; |
726 | const char **rec_argv; | |
727 | ||
728 | rec_argc = ARRAY_SIZE(record_args) + argc - 1; | |
729 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
730 | ||
ce47dc56 CS |
731 | if (rec_argv == NULL) |
732 | return -ENOMEM; | |
733 | ||
ba77c9e1 LZ |
734 | for (i = 0; i < ARRAY_SIZE(record_args); i++) |
735 | rec_argv[i] = strdup(record_args[i]); | |
736 | ||
737 | for (j = 1; j < (unsigned int)argc; j++, i++) | |
738 | rec_argv[i] = argv[j]; | |
739 | ||
740 | return cmd_record(i, rec_argv, NULL); | |
741 | } | |
742 | ||
1d037ca1 | 743 | int cmd_kmem(int argc, const char **argv, const char *prefix __maybe_unused) |
ba77c9e1 | 744 | { |
0433ffbe | 745 | const char * const default_sort_order = "frag,hit,bytes"; |
0433ffbe ACM |
746 | const struct option kmem_options[] = { |
747 | OPT_STRING('i', "input", &input_name, "file", "input file name"), | |
748 | OPT_CALLBACK_NOOPT(0, "caller", NULL, NULL, | |
749 | "show per-callsite statistics", parse_caller_opt), | |
750 | OPT_CALLBACK_NOOPT(0, "alloc", NULL, NULL, | |
751 | "show per-allocation statistics", parse_alloc_opt), | |
752 | OPT_CALLBACK('s', "sort", NULL, "key[,key2...]", | |
753 | "sort by keys: ptr, call_site, bytes, hit, pingpong, frag", | |
754 | parse_sort_opt), | |
755 | OPT_CALLBACK('l', "line", NULL, "num", "show n lines", parse_line_opt), | |
756 | OPT_BOOLEAN(0, "raw-ip", &raw_ip, "show raw ip instead of symbol"), | |
757 | OPT_END() | |
758 | }; | |
759 | const char * const kmem_usage[] = { | |
760 | "perf kmem [<options>] {record|stat}", | |
761 | NULL | |
762 | }; | |
ba77c9e1 LZ |
763 | argc = parse_options(argc, argv, kmem_options, kmem_usage, 0); |
764 | ||
90b86a9f | 765 | if (!argc) |
ba77c9e1 LZ |
766 | usage_with_options(kmem_usage, kmem_options); |
767 | ||
655000e7 ACM |
768 | symbol__init(); |
769 | ||
90b86a9f LZ |
770 | if (!strncmp(argv[0], "rec", 3)) { |
771 | return __cmd_record(argc, argv); | |
772 | } else if (!strcmp(argv[0], "stat")) { | |
2814eb05 ACM |
773 | if (setup_cpunode_map()) |
774 | return -1; | |
90b86a9f LZ |
775 | |
776 | if (list_empty(&caller_sort)) | |
777 | setup_sorting(&caller_sort, default_sort_order); | |
778 | if (list_empty(&alloc_sort)) | |
779 | setup_sorting(&alloc_sort, default_sort_order); | |
ba77c9e1 | 780 | |
70cb4e96 | 781 | return __cmd_kmem(); |
b00eca8c PE |
782 | } else |
783 | usage_with_options(kmem_usage, kmem_options); | |
7d0d3945 | 784 | |
90b86a9f | 785 | return 0; |
ba77c9e1 LZ |
786 | } |
787 |