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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[karo-tx-linux.git] / tools / perf / builtin-kmem.c
1 #include "builtin.h"
2 #include "perf.h"
3
4 #include "util/evlist.h"
5 #include "util/evsel.h"
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"
11 #include "util/session.h"
12 #include "util/tool.h"
13
14 #include "util/parse-options.h"
15 #include "util/trace-event.h"
16
17 #include "util/debug.h"
18
19 #include <linux/rbtree.h>
20
21 struct alloc_stat;
22 typedef int (*sort_fn_t)(struct alloc_stat *, struct alloc_stat *);
23
24 static int                      alloc_flag;
25 static int                      caller_flag;
26
27 static int                      alloc_lines = -1;
28 static int                      caller_lines = -1;
29
30 static bool                     raw_ip;
31
32 static int                      *cpunode_map;
33 static int                      max_cpu_num;
34
35 struct alloc_stat {
36         u64     call_site;
37         u64     ptr;
38         u64     bytes_req;
39         u64     bytes_alloc;
40         u32     hit;
41         u32     pingpong;
42
43         short   alloc_cpu;
44
45         struct rb_node node;
46 };
47
48 static struct rb_root root_alloc_stat;
49 static struct rb_root root_alloc_sorted;
50 static struct rb_root root_caller_stat;
51 static struct rb_root root_caller_sorted;
52
53 static unsigned long total_requested, total_allocated;
54 static unsigned long nr_allocs, nr_cross_allocs;
55
56 #define PATH_SYS_NODE   "/sys/devices/system/node"
57
58 static int init_cpunode_map(void)
59 {
60         FILE *fp;
61         int i, err = -1;
62
63         fp = fopen("/sys/devices/system/cpu/kernel_max", "r");
64         if (!fp) {
65                 max_cpu_num = 4096;
66                 return 0;
67         }
68
69         if (fscanf(fp, "%d", &max_cpu_num) < 1) {
70                 pr_err("Failed to read 'kernel_max' from sysfs");
71                 goto out_close;
72         }
73
74         max_cpu_num++;
75
76         cpunode_map = calloc(max_cpu_num, sizeof(int));
77         if (!cpunode_map) {
78                 pr_err("%s: calloc failed\n", __func__);
79                 goto out_close;
80         }
81
82         for (i = 0; i < max_cpu_num; i++)
83                 cpunode_map[i] = -1;
84
85         err = 0;
86 out_close:
87         fclose(fp);
88         return err;
89 }
90
91 static int setup_cpunode_map(void)
92 {
93         struct dirent *dent1, *dent2;
94         DIR *dir1, *dir2;
95         unsigned int cpu, mem;
96         char buf[PATH_MAX];
97
98         if (init_cpunode_map())
99                 return -1;
100
101         dir1 = opendir(PATH_SYS_NODE);
102         if (!dir1)
103                 return -1;
104
105         while ((dent1 = readdir(dir1)) != NULL) {
106                 if (dent1->d_type != DT_DIR ||
107                     sscanf(dent1->d_name, "node%u", &mem) < 1)
108                         continue;
109
110                 snprintf(buf, PATH_MAX, "%s/%s", PATH_SYS_NODE, dent1->d_name);
111                 dir2 = opendir(buf);
112                 if (!dir2)
113                         continue;
114                 while ((dent2 = readdir(dir2)) != NULL) {
115                         if (dent2->d_type != DT_LNK ||
116                             sscanf(dent2->d_name, "cpu%u", &cpu) < 1)
117                                 continue;
118                         cpunode_map[cpu] = mem;
119                 }
120                 closedir(dir2);
121         }
122         closedir(dir1);
123         return 0;
124 }
125
126 static int insert_alloc_stat(unsigned long call_site, unsigned long ptr,
127                              int bytes_req, int bytes_alloc, int cpu)
128 {
129         struct rb_node **node = &root_alloc_stat.rb_node;
130         struct rb_node *parent = NULL;
131         struct alloc_stat *data = NULL;
132
133         while (*node) {
134                 parent = *node;
135                 data = rb_entry(*node, struct alloc_stat, node);
136
137                 if (ptr > data->ptr)
138                         node = &(*node)->rb_right;
139                 else if (ptr < data->ptr)
140                         node = &(*node)->rb_left;
141                 else
142                         break;
143         }
144
145         if (data && data->ptr == ptr) {
146                 data->hit++;
147                 data->bytes_req += bytes_req;
148                 data->bytes_alloc += bytes_alloc;
149         } else {
150                 data = malloc(sizeof(*data));
151                 if (!data) {
152                         pr_err("%s: malloc failed\n", __func__);
153                         return -1;
154                 }
155                 data->ptr = ptr;
156                 data->pingpong = 0;
157                 data->hit = 1;
158                 data->bytes_req = bytes_req;
159                 data->bytes_alloc = bytes_alloc;
160
161                 rb_link_node(&data->node, parent, node);
162                 rb_insert_color(&data->node, &root_alloc_stat);
163         }
164         data->call_site = call_site;
165         data->alloc_cpu = cpu;
166         return 0;
167 }
168
169 static int insert_caller_stat(unsigned long call_site,
170                               int bytes_req, int bytes_alloc)
171 {
172         struct rb_node **node = &root_caller_stat.rb_node;
173         struct rb_node *parent = NULL;
174         struct alloc_stat *data = NULL;
175
176         while (*node) {
177                 parent = *node;
178                 data = rb_entry(*node, struct alloc_stat, node);
179
180                 if (call_site > data->call_site)
181                         node = &(*node)->rb_right;
182                 else if (call_site < data->call_site)
183                         node = &(*node)->rb_left;
184                 else
185                         break;
186         }
187
188         if (data && data->call_site == call_site) {
189                 data->hit++;
190                 data->bytes_req += bytes_req;
191                 data->bytes_alloc += bytes_alloc;
192         } else {
193                 data = malloc(sizeof(*data));
194                 if (!data) {
195                         pr_err("%s: malloc failed\n", __func__);
196                         return -1;
197                 }
198                 data->call_site = call_site;
199                 data->pingpong = 0;
200                 data->hit = 1;
201                 data->bytes_req = bytes_req;
202                 data->bytes_alloc = bytes_alloc;
203
204                 rb_link_node(&data->node, parent, node);
205                 rb_insert_color(&data->node, &root_caller_stat);
206         }
207
208         return 0;
209 }
210
211 static int perf_evsel__process_alloc_event(struct perf_evsel *evsel,
212                                            struct perf_sample *sample)
213 {
214         unsigned long ptr = perf_evsel__intval(evsel, sample, "ptr"),
215                       call_site = perf_evsel__intval(evsel, sample, "call_site");
216         int bytes_req = perf_evsel__intval(evsel, sample, "bytes_req"),
217             bytes_alloc = perf_evsel__intval(evsel, sample, "bytes_alloc");
218
219         if (insert_alloc_stat(call_site, ptr, bytes_req, bytes_alloc, sample->cpu) ||
220             insert_caller_stat(call_site, bytes_req, bytes_alloc))
221                 return -1;
222
223         total_requested += bytes_req;
224         total_allocated += bytes_alloc;
225
226         nr_allocs++;
227         return 0;
228 }
229
230 static int perf_evsel__process_alloc_node_event(struct perf_evsel *evsel,
231                                                 struct perf_sample *sample)
232 {
233         int ret = perf_evsel__process_alloc_event(evsel, sample);
234
235         if (!ret) {
236                 int node1 = cpunode_map[sample->cpu],
237                     node2 = perf_evsel__intval(evsel, sample, "node");
238
239                 if (node1 != node2)
240                         nr_cross_allocs++;
241         }
242
243         return ret;
244 }
245
246 static int ptr_cmp(struct alloc_stat *, struct alloc_stat *);
247 static int callsite_cmp(struct alloc_stat *, struct alloc_stat *);
248
249 static struct alloc_stat *search_alloc_stat(unsigned long ptr,
250                                             unsigned long call_site,
251                                             struct rb_root *root,
252                                             sort_fn_t sort_fn)
253 {
254         struct rb_node *node = root->rb_node;
255         struct alloc_stat key = { .ptr = ptr, .call_site = call_site };
256
257         while (node) {
258                 struct alloc_stat *data;
259                 int cmp;
260
261                 data = rb_entry(node, struct alloc_stat, node);
262
263                 cmp = sort_fn(&key, data);
264                 if (cmp < 0)
265                         node = node->rb_left;
266                 else if (cmp > 0)
267                         node = node->rb_right;
268                 else
269                         return data;
270         }
271         return NULL;
272 }
273
274 static int perf_evsel__process_free_event(struct perf_evsel *evsel,
275                                           struct perf_sample *sample)
276 {
277         unsigned long ptr = perf_evsel__intval(evsel, sample, "ptr");
278         struct alloc_stat *s_alloc, *s_caller;
279
280         s_alloc = search_alloc_stat(ptr, 0, &root_alloc_stat, ptr_cmp);
281         if (!s_alloc)
282                 return 0;
283
284         if ((short)sample->cpu != s_alloc->alloc_cpu) {
285                 s_alloc->pingpong++;
286
287                 s_caller = search_alloc_stat(0, s_alloc->call_site,
288                                              &root_caller_stat, callsite_cmp);
289                 if (!s_caller)
290                         return -1;
291                 s_caller->pingpong++;
292         }
293         s_alloc->alloc_cpu = -1;
294
295         return 0;
296 }
297
298 typedef int (*tracepoint_handler)(struct perf_evsel *evsel,
299                                   struct perf_sample *sample);
300
301 static int process_sample_event(struct perf_tool *tool __maybe_unused,
302                                 union perf_event *event,
303                                 struct perf_sample *sample,
304                                 struct perf_evsel *evsel,
305                                 struct machine *machine)
306 {
307         struct thread *thread = machine__findnew_thread(machine, event->ip.pid);
308
309         if (thread == NULL) {
310                 pr_debug("problem processing %d event, skipping it.\n",
311                          event->header.type);
312                 return -1;
313         }
314
315         dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
316
317         if (evsel->handler.func != NULL) {
318                 tracepoint_handler f = evsel->handler.func;
319                 return f(evsel, sample);
320         }
321
322         return 0;
323 }
324
325 static struct perf_tool perf_kmem = {
326         .sample          = process_sample_event,
327         .comm            = perf_event__process_comm,
328         .ordered_samples = true,
329 };
330
331 static double fragmentation(unsigned long n_req, unsigned long n_alloc)
332 {
333         if (n_alloc == 0)
334                 return 0.0;
335         else
336                 return 100.0 - (100.0 * n_req / n_alloc);
337 }
338
339 static void __print_result(struct rb_root *root, struct perf_session *session,
340                            int n_lines, int is_caller)
341 {
342         struct rb_node *next;
343         struct machine *machine;
344
345         printf("%.102s\n", graph_dotted_line);
346         printf(" %-34s |",  is_caller ? "Callsite": "Alloc Ptr");
347         printf(" Total_alloc/Per | Total_req/Per   | Hit      | Ping-pong | Frag\n");
348         printf("%.102s\n", graph_dotted_line);
349
350         next = rb_first(root);
351
352         machine = perf_session__find_host_machine(session);
353         if (!machine) {
354                 pr_err("__print_result: couldn't find kernel information\n");
355                 return;
356         }
357         while (next && n_lines--) {
358                 struct alloc_stat *data = rb_entry(next, struct alloc_stat,
359                                                    node);
360                 struct symbol *sym = NULL;
361                 struct map *map;
362                 char buf[BUFSIZ];
363                 u64 addr;
364
365                 if (is_caller) {
366                         addr = data->call_site;
367                         if (!raw_ip)
368                                 sym = machine__find_kernel_function(machine, addr, &map, NULL);
369                 } else
370                         addr = data->ptr;
371
372                 if (sym != NULL)
373                         snprintf(buf, sizeof(buf), "%s+%" PRIx64 "", sym->name,
374                                  addr - map->unmap_ip(map, sym->start));
375                 else
376                         snprintf(buf, sizeof(buf), "%#" PRIx64 "", addr);
377                 printf(" %-34s |", buf);
378
379                 printf(" %9llu/%-5lu | %9llu/%-5lu | %8lu | %8lu | %6.3f%%\n",
380                        (unsigned long long)data->bytes_alloc,
381                        (unsigned long)data->bytes_alloc / data->hit,
382                        (unsigned long long)data->bytes_req,
383                        (unsigned long)data->bytes_req / data->hit,
384                        (unsigned long)data->hit,
385                        (unsigned long)data->pingpong,
386                        fragmentation(data->bytes_req, data->bytes_alloc));
387
388                 next = rb_next(next);
389         }
390
391         if (n_lines == -1)
392                 printf(" ...                                | ...             | ...             | ...    | ...      | ...   \n");
393
394         printf("%.102s\n", graph_dotted_line);
395 }
396
397 static void print_summary(void)
398 {
399         printf("\nSUMMARY\n=======\n");
400         printf("Total bytes requested: %lu\n", total_requested);
401         printf("Total bytes allocated: %lu\n", total_allocated);
402         printf("Total bytes wasted on internal fragmentation: %lu\n",
403                total_allocated - total_requested);
404         printf("Internal fragmentation: %f%%\n",
405                fragmentation(total_requested, total_allocated));
406         printf("Cross CPU allocations: %lu/%lu\n", nr_cross_allocs, nr_allocs);
407 }
408
409 static void print_result(struct perf_session *session)
410 {
411         if (caller_flag)
412                 __print_result(&root_caller_sorted, session, caller_lines, 1);
413         if (alloc_flag)
414                 __print_result(&root_alloc_sorted, session, alloc_lines, 0);
415         print_summary();
416 }
417
418 struct sort_dimension {
419         const char              name[20];
420         sort_fn_t               cmp;
421         struct list_head        list;
422 };
423
424 static LIST_HEAD(caller_sort);
425 static LIST_HEAD(alloc_sort);
426
427 static void sort_insert(struct rb_root *root, struct alloc_stat *data,
428                         struct list_head *sort_list)
429 {
430         struct rb_node **new = &(root->rb_node);
431         struct rb_node *parent = NULL;
432         struct sort_dimension *sort;
433
434         while (*new) {
435                 struct alloc_stat *this;
436                 int cmp = 0;
437
438                 this = rb_entry(*new, struct alloc_stat, node);
439                 parent = *new;
440
441                 list_for_each_entry(sort, sort_list, list) {
442                         cmp = sort->cmp(data, this);
443                         if (cmp)
444                                 break;
445                 }
446
447                 if (cmp > 0)
448                         new = &((*new)->rb_left);
449                 else
450                         new = &((*new)->rb_right);
451         }
452
453         rb_link_node(&data->node, parent, new);
454         rb_insert_color(&data->node, root);
455 }
456
457 static void __sort_result(struct rb_root *root, struct rb_root *root_sorted,
458                           struct list_head *sort_list)
459 {
460         struct rb_node *node;
461         struct alloc_stat *data;
462
463         for (;;) {
464                 node = rb_first(root);
465                 if (!node)
466                         break;
467
468                 rb_erase(node, root);
469                 data = rb_entry(node, struct alloc_stat, node);
470                 sort_insert(root_sorted, data, sort_list);
471         }
472 }
473
474 static void sort_result(void)
475 {
476         __sort_result(&root_alloc_stat, &root_alloc_sorted, &alloc_sort);
477         __sort_result(&root_caller_stat, &root_caller_sorted, &caller_sort);
478 }
479
480 static int __cmd_kmem(void)
481 {
482         int err = -EINVAL;
483         struct perf_session *session;
484         const struct perf_evsel_str_handler kmem_tracepoints[] = {
485                 { "kmem:kmalloc",               perf_evsel__process_alloc_event, },
486                 { "kmem:kmem_cache_alloc",      perf_evsel__process_alloc_event, },
487                 { "kmem:kmalloc_node",          perf_evsel__process_alloc_node_event, },
488                 { "kmem:kmem_cache_alloc_node", perf_evsel__process_alloc_node_event, },
489                 { "kmem:kfree",                 perf_evsel__process_free_event, },
490                 { "kmem:kmem_cache_free",       perf_evsel__process_free_event, },
491         };
492
493         session = perf_session__new(input_name, O_RDONLY, 0, false, &perf_kmem);
494         if (session == NULL)
495                 return -ENOMEM;
496
497         if (perf_session__create_kernel_maps(session) < 0)
498                 goto out_delete;
499
500         if (!perf_session__has_traces(session, "kmem record"))
501                 goto out_delete;
502
503         if (perf_session__set_tracepoints_handlers(session, kmem_tracepoints)) {
504                 pr_err("Initializing perf session tracepoint handlers failed\n");
505                 return -1;
506         }
507
508         setup_pager();
509         err = perf_session__process_events(session, &perf_kmem);
510         if (err != 0)
511                 goto out_delete;
512         sort_result();
513         print_result(session);
514 out_delete:
515         perf_session__delete(session);
516         return err;
517 }
518
519 static int ptr_cmp(struct alloc_stat *l, struct alloc_stat *r)
520 {
521         if (l->ptr < r->ptr)
522                 return -1;
523         else if (l->ptr > r->ptr)
524                 return 1;
525         return 0;
526 }
527
528 static struct sort_dimension ptr_sort_dimension = {
529         .name   = "ptr",
530         .cmp    = ptr_cmp,
531 };
532
533 static int callsite_cmp(struct alloc_stat *l, struct alloc_stat *r)
534 {
535         if (l->call_site < r->call_site)
536                 return -1;
537         else if (l->call_site > r->call_site)
538                 return 1;
539         return 0;
540 }
541
542 static struct sort_dimension callsite_sort_dimension = {
543         .name   = "callsite",
544         .cmp    = callsite_cmp,
545 };
546
547 static int hit_cmp(struct alloc_stat *l, struct alloc_stat *r)
548 {
549         if (l->hit < r->hit)
550                 return -1;
551         else if (l->hit > r->hit)
552                 return 1;
553         return 0;
554 }
555
556 static struct sort_dimension hit_sort_dimension = {
557         .name   = "hit",
558         .cmp    = hit_cmp,
559 };
560
561 static int bytes_cmp(struct alloc_stat *l, struct alloc_stat *r)
562 {
563         if (l->bytes_alloc < r->bytes_alloc)
564                 return -1;
565         else if (l->bytes_alloc > r->bytes_alloc)
566                 return 1;
567         return 0;
568 }
569
570 static struct sort_dimension bytes_sort_dimension = {
571         .name   = "bytes",
572         .cmp    = bytes_cmp,
573 };
574
575 static int frag_cmp(struct alloc_stat *l, struct alloc_stat *r)
576 {
577         double x, y;
578
579         x = fragmentation(l->bytes_req, l->bytes_alloc);
580         y = fragmentation(r->bytes_req, r->bytes_alloc);
581
582         if (x < y)
583                 return -1;
584         else if (x > y)
585                 return 1;
586         return 0;
587 }
588
589 static struct sort_dimension frag_sort_dimension = {
590         .name   = "frag",
591         .cmp    = frag_cmp,
592 };
593
594 static int pingpong_cmp(struct alloc_stat *l, struct alloc_stat *r)
595 {
596         if (l->pingpong < r->pingpong)
597                 return -1;
598         else if (l->pingpong > r->pingpong)
599                 return 1;
600         return 0;
601 }
602
603 static struct sort_dimension pingpong_sort_dimension = {
604         .name   = "pingpong",
605         .cmp    = pingpong_cmp,
606 };
607
608 static struct sort_dimension *avail_sorts[] = {
609         &ptr_sort_dimension,
610         &callsite_sort_dimension,
611         &hit_sort_dimension,
612         &bytes_sort_dimension,
613         &frag_sort_dimension,
614         &pingpong_sort_dimension,
615 };
616
617 #define NUM_AVAIL_SORTS \
618         (int)(sizeof(avail_sorts) / sizeof(struct sort_dimension *))
619
620 static int sort_dimension__add(const char *tok, struct list_head *list)
621 {
622         struct sort_dimension *sort;
623         int i;
624
625         for (i = 0; i < NUM_AVAIL_SORTS; i++) {
626                 if (!strcmp(avail_sorts[i]->name, tok)) {
627                         sort = malloc(sizeof(*sort));
628                         if (!sort) {
629                                 pr_err("%s: malloc failed\n", __func__);
630                                 return -1;
631                         }
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                 pr_err("%s: strdup failed\n", __func__);
648                 return -1;
649         }
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);
657                         free(str);
658                         return -1;
659                 }
660         }
661
662         free(str);
663         return 0;
664 }
665
666 static int parse_sort_opt(const struct option *opt __maybe_unused,
667                           const char *arg, int unset __maybe_unused)
668 {
669         if (!arg)
670                 return -1;
671
672         if (caller_flag > alloc_flag)
673                 return setup_sorting(&caller_sort, arg);
674         else
675                 return setup_sorting(&alloc_sort, arg);
676
677         return 0;
678 }
679
680 static int parse_caller_opt(const struct option *opt __maybe_unused,
681                             const char *arg __maybe_unused,
682                             int unset __maybe_unused)
683 {
684         caller_flag = (alloc_flag + 1);
685         return 0;
686 }
687
688 static int parse_alloc_opt(const struct option *opt __maybe_unused,
689                            const char *arg __maybe_unused,
690                            int unset __maybe_unused)
691 {
692         alloc_flag = (caller_flag + 1);
693         return 0;
694 }
695
696 static int parse_line_opt(const struct option *opt __maybe_unused,
697                           const char *arg, int unset __maybe_unused)
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
714 static int __cmd_record(int argc, const char **argv)
715 {
716         const char * const record_args[] = {
717         "record", "-a", "-R", "-f", "-c", "1",
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",
724         };
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
731         if (rec_argv == NULL)
732                 return -ENOMEM;
733
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
743 int cmd_kmem(int argc, const char **argv, const char *prefix __maybe_unused)
744 {
745         const char * const default_sort_order = "frag,hit,bytes";
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         };
763         argc = parse_options(argc, argv, kmem_options, kmem_usage, 0);
764
765         if (!argc)
766                 usage_with_options(kmem_usage, kmem_options);
767
768         symbol__init();
769
770         if (!strncmp(argv[0], "rec", 3)) {
771                 return __cmd_record(argc, argv);
772         } else if (!strcmp(argv[0], "stat")) {
773                 if (setup_cpunode_map())
774                         return -1;
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);
780
781                 return __cmd_kmem();
782         } else
783                 usage_with_options(kmem_usage, kmem_options);
784
785         return 0;
786 }
787