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signal/ia64: Document a conflict with SI_USER with SIGFPE
[cris-mirror.git] / tools / perf / builtin-c2c.c
blob475999e48f6699dd3e61619351f656b23ba659b5
1 /*
2 * This is rewrite of original c2c tool introduced in here:
3 * http://lwn.net/Articles/588866/
4 *
5 * The original tool was changed to fit in current perf state.
6 *
7 * Original authors:
8 * Don Zickus <dzickus@redhat.com>
9 * Dick Fowles <fowles@inreach.com>
10 * Joe Mario <jmario@redhat.com>
11 */
12 #include <errno.h>
13 #include <inttypes.h>
14 #include <linux/compiler.h>
15 #include <linux/kernel.h>
16 #include <linux/stringify.h>
17 #include <asm/bug.h>
18 #include <sys/param.h>
19 #include "util.h"
20 #include "debug.h"
21 #include "builtin.h"
22 #include <subcmd/parse-options.h>
23 #include "mem-events.h"
24 #include "session.h"
25 #include "hist.h"
26 #include "sort.h"
27 #include "tool.h"
28 #include "data.h"
29 #include "sort.h"
30 #include "event.h"
31 #include "evlist.h"
32 #include "evsel.h"
33 #include <asm/bug.h>
34 #include "ui/browsers/hists.h"
35 #include "evlist.h"
36 #include "thread.h"
37
38 struct c2c_hists {
39 struct hists hists;
40 struct perf_hpp_list list;
41 struct c2c_stats stats;
42 };
43
44 struct compute_stats {
45 struct stats lcl_hitm;
46 struct stats rmt_hitm;
47 struct stats load;
48 };
49
50 struct c2c_hist_entry {
51 struct c2c_hists *hists;
52 struct c2c_stats stats;
53 unsigned long *cpuset;
54 struct c2c_stats *node_stats;
55 unsigned int cacheline_idx;
56
57 struct compute_stats cstats;
58
59 /*
60 * must be at the end,
61 * because of its callchain dynamic entry
62 */
63 struct hist_entry he;
64 };
65
66 static char const *coalesce_default = "pid,iaddr";
67
68 struct perf_c2c {
69 struct perf_tool tool;
70 struct c2c_hists hists;
71
72 unsigned long **nodes;
73 int nodes_cnt;
74 int cpus_cnt;
75 int *cpu2node;
76 int node_info;
77
78 bool show_src;
79 bool show_all;
80 bool use_stdio;
81 bool stats_only;
82 bool symbol_full;
83
84 /* HITM shared clines stats */
85 struct c2c_stats hitm_stats;
86 int shared_clines;
87
88 int display;
89
90 const char *coalesce;
91 char *cl_sort;
92 char *cl_resort;
93 char *cl_output;
94 };
95
96 enum {
97 DISPLAY_LCL,
98 DISPLAY_RMT,
99 DISPLAY_TOT,
100 DISPLAY_MAX,
101 };
102
103 static const char *display_str[DISPLAY_MAX] = {
104 [DISPLAY_LCL] = "Local",
105 [DISPLAY_RMT] = "Remote",
106 [DISPLAY_TOT] = "Total",
107 };
108
109 static const struct option c2c_options[] = {
110 OPT_INCR('v', "verbose", &verbose, "be more verbose (show counter open errors, etc)"),
111 OPT_END()
112 };
113
114 static struct perf_c2c c2c;
115
116 static void *c2c_he_zalloc(size_t size)
117 {
118 struct c2c_hist_entry *c2c_he;
119
120 c2c_he = zalloc(size + sizeof(*c2c_he));
121 if (!c2c_he)
122 return NULL;
123
124 c2c_he->cpuset = bitmap_alloc(c2c.cpus_cnt);
125 if (!c2c_he->cpuset)
126 return NULL;
127
128 c2c_he->node_stats = zalloc(c2c.nodes_cnt * sizeof(*c2c_he->node_stats));
129 if (!c2c_he->node_stats)
130 return NULL;
131
132 init_stats(&c2c_he->cstats.lcl_hitm);
133 init_stats(&c2c_he->cstats.rmt_hitm);
134 init_stats(&c2c_he->cstats.load);
135
136 return &c2c_he->he;
137 }
138
139 static void c2c_he_free(void *he)
140 {
141 struct c2c_hist_entry *c2c_he;
142
143 c2c_he = container_of(he, struct c2c_hist_entry, he);
144 if (c2c_he->hists) {
145 hists__delete_entries(&c2c_he->hists->hists);
146 free(c2c_he->hists);
147 }
148
149 free(c2c_he->cpuset);
150 free(c2c_he->node_stats);
151 free(c2c_he);
152 }
153
154 static struct hist_entry_ops c2c_entry_ops = {
155 .new = c2c_he_zalloc,
156 .free = c2c_he_free,
157 };
158
159 static int c2c_hists__init(struct c2c_hists *hists,
160 const char *sort,
161 int nr_header_lines);
162
163 static struct c2c_hists*
164 he__get_c2c_hists(struct hist_entry *he,
165 const char *sort,
166 int nr_header_lines)
167 {
168 struct c2c_hist_entry *c2c_he;
169 struct c2c_hists *hists;
170 int ret;
171
172 c2c_he = container_of(he, struct c2c_hist_entry, he);
173 if (c2c_he->hists)
174 return c2c_he->hists;
175
176 hists = c2c_he->hists = zalloc(sizeof(*hists));
177 if (!hists)
178 return NULL;
179
180 ret = c2c_hists__init(hists, sort, nr_header_lines);
181 if (ret) {
182 free(hists);
183 return NULL;
184 }
185
186 return hists;
187 }
188
189 static void c2c_he__set_cpu(struct c2c_hist_entry *c2c_he,
190 struct perf_sample *sample)
191 {
192 if (WARN_ONCE(sample->cpu == (unsigned int) -1,
193 "WARNING: no sample cpu value"))
194 return;
195
196 set_bit(sample->cpu, c2c_he->cpuset);
197 }
198
199 static void compute_stats(struct c2c_hist_entry *c2c_he,
200 struct c2c_stats *stats,
201 u64 weight)
202 {
203 struct compute_stats *cstats = &c2c_he->cstats;
204
205 if (stats->rmt_hitm)
206 update_stats(&cstats->rmt_hitm, weight);
207 else if (stats->lcl_hitm)
208 update_stats(&cstats->lcl_hitm, weight);
209 else if (stats->load)
210 update_stats(&cstats->load, weight);
211 }
212
213 static int process_sample_event(struct perf_tool *tool __maybe_unused,
214 union perf_event *event,
215 struct perf_sample *sample,
216 struct perf_evsel *evsel,
217 struct machine *machine)
218 {
219 struct c2c_hists *c2c_hists = &c2c.hists;
220 struct c2c_hist_entry *c2c_he;
221 struct c2c_stats stats = { .nr_entries = 0, };
222 struct hist_entry *he;
223 struct addr_location al;
224 struct mem_info *mi, *mi_dup;
225 int ret;
226
227 if (machine__resolve(machine, &al, sample) < 0) {
228 pr_debug("problem processing %d event, skipping it.\n",
229 event->header.type);
230 return -1;
231 }
232
233 ret = sample__resolve_callchain(sample, &callchain_cursor, NULL,
234 evsel, &al, sysctl_perf_event_max_stack);
235 if (ret)
236 goto out;
237
238 mi = sample__resolve_mem(sample, &al);
239 if (mi == NULL)
240 return -ENOMEM;
241
242 mi_dup = memdup(mi, sizeof(*mi));
243 if (!mi_dup)
244 goto free_mi;
245
246 c2c_decode_stats(&stats, mi);
247
248 he = hists__add_entry_ops(&c2c_hists->hists, &c2c_entry_ops,
249 &al, NULL, NULL, mi,
250 sample, true);
251 if (he == NULL)
252 goto free_mi_dup;
253
254 c2c_he = container_of(he, struct c2c_hist_entry, he);
255 c2c_add_stats(&c2c_he->stats, &stats);
256 c2c_add_stats(&c2c_hists->stats, &stats);
257
258 c2c_he__set_cpu(c2c_he, sample);
259
260 hists__inc_nr_samples(&c2c_hists->hists, he->filtered);
261 ret = hist_entry__append_callchain(he, sample);
262
263 if (!ret) {
264 /*
265 * There's already been warning about missing
266 * sample's cpu value. Let's account all to
267 * node 0 in this case, without any further
268 * warning.
269 *
270 * Doing node stats only for single callchain data.
271 */
272 int cpu = sample->cpu == (unsigned int) -1 ? 0 : sample->cpu;
273 int node = c2c.cpu2node[cpu];
274
275 mi = mi_dup;
276
277 mi_dup = memdup(mi, sizeof(*mi));
278 if (!mi_dup)
279 goto free_mi;
280
281 c2c_hists = he__get_c2c_hists(he, c2c.cl_sort, 2);
282 if (!c2c_hists)
283 goto free_mi_dup;
284
285 he = hists__add_entry_ops(&c2c_hists->hists, &c2c_entry_ops,
286 &al, NULL, NULL, mi,
287 sample, true);
288 if (he == NULL)
289 goto free_mi_dup;
290
291 c2c_he = container_of(he, struct c2c_hist_entry, he);
292 c2c_add_stats(&c2c_he->stats, &stats);
293 c2c_add_stats(&c2c_hists->stats, &stats);
294 c2c_add_stats(&c2c_he->node_stats[node], &stats);
295
296 compute_stats(c2c_he, &stats, sample->weight);
297
298 c2c_he__set_cpu(c2c_he, sample);
299
300 hists__inc_nr_samples(&c2c_hists->hists, he->filtered);
301 ret = hist_entry__append_callchain(he, sample);
302 }
303
304 out:
305 addr_location__put(&al);
306 return ret;
307
308 free_mi_dup:
309 free(mi_dup);
310 free_mi:
311 free(mi);
312 ret = -ENOMEM;
313 goto out;
314 }
315
316 static struct perf_c2c c2c = {
317 .tool = {
318 .sample = process_sample_event,
319 .mmap = perf_event__process_mmap,
320 .mmap2 = perf_event__process_mmap2,
321 .comm = perf_event__process_comm,
322 .exit = perf_event__process_exit,
323 .fork = perf_event__process_fork,
324 .lost = perf_event__process_lost,
325 .ordered_events = true,
326 .ordering_requires_timestamps = true,
327 },
328 };
329
330 static const char * const c2c_usage[] = {
331 "perf c2c {record|report}",
332 NULL
333 };
334
335 static const char * const __usage_report[] = {
336 "perf c2c report",
337 NULL
338 };
339
340 static const char * const *report_c2c_usage = __usage_report;
341
342 #define C2C_HEADER_MAX 2
343
344 struct c2c_header {
345 struct {
346 const char *text;
347 int span;
348 } line[C2C_HEADER_MAX];
349 };
350
351 struct c2c_dimension {
352 struct c2c_header header;
353 const char *name;
354 int width;
355 struct sort_entry *se;
356
357 int64_t (*cmp)(struct perf_hpp_fmt *fmt,
358 struct hist_entry *, struct hist_entry *);
359 int (*entry)(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
360 struct hist_entry *he);
361 int (*color)(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
362 struct hist_entry *he);
363 };
364
365 struct c2c_fmt {
366 struct perf_hpp_fmt fmt;
367 struct c2c_dimension *dim;
368 };
369
370 #define SYMBOL_WIDTH 30
371
372 static struct c2c_dimension dim_symbol;
373 static struct c2c_dimension dim_srcline;
374
375 static int symbol_width(struct hists *hists, struct sort_entry *se)
376 {
377 int width = hists__col_len(hists, se->se_width_idx);
378
379 if (!c2c.symbol_full)
380 width = MIN(width, SYMBOL_WIDTH);
381
382 return width;
383 }
384
385 static int c2c_width(struct perf_hpp_fmt *fmt,
386 struct perf_hpp *hpp __maybe_unused,
387 struct hists *hists)
388 {
389 struct c2c_fmt *c2c_fmt;
390 struct c2c_dimension *dim;
391
392 c2c_fmt = container_of(fmt, struct c2c_fmt, fmt);
393 dim = c2c_fmt->dim;
394
395 if (dim == &dim_symbol || dim == &dim_srcline)
396 return symbol_width(hists, dim->se);
397
398 return dim->se ? hists__col_len(hists, dim->se->se_width_idx) :
399 c2c_fmt->dim->width;
400 }
401
402 static int c2c_header(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
403 struct hists *hists, int line, int *span)
404 {
405 struct perf_hpp_list *hpp_list = hists->hpp_list;
406 struct c2c_fmt *c2c_fmt;
407 struct c2c_dimension *dim;
408 const char *text = NULL;
409 int width = c2c_width(fmt, hpp, hists);
410
411 c2c_fmt = container_of(fmt, struct c2c_fmt, fmt);
412 dim = c2c_fmt->dim;
413
414 if (dim->se) {
415 text = dim->header.line[line].text;
416 /* Use the last line from sort_entry if not defined. */
417 if (!text && (line == hpp_list->nr_header_lines - 1))
418 text = dim->se->se_header;
419 } else {
420 text = dim->header.line[line].text;
421
422 if (*span) {
423 (*span)--;
424 return 0;
425 } else {
426 *span = dim->header.line[line].span;
427 }
428 }
429
430 if (text == NULL)
431 text = "";
432
433 return scnprintf(hpp->buf, hpp->size, "%*s", width, text);
434 }
435
436 #define HEX_STR(__s, __v) \
437 ({ \
438 scnprintf(__s, sizeof(__s), "0x%" PRIx64, __v); \
439 __s; \
440 })
441
442 static int64_t
443 dcacheline_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
444 struct hist_entry *left, struct hist_entry *right)
445 {
446 return sort__dcacheline_cmp(left, right);
447 }
448
449 static int dcacheline_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
450 struct hist_entry *he)
451 {
452 uint64_t addr = 0;
453 int width = c2c_width(fmt, hpp, he->hists);
454 char buf[20];
455
456 if (he->mem_info)
457 addr = cl_address(he->mem_info->daddr.addr);
458
459 return scnprintf(hpp->buf, hpp->size, "%*s", width, HEX_STR(buf, addr));
460 }
461
462 static int offset_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
463 struct hist_entry *he)
464 {
465 uint64_t addr = 0;
466 int width = c2c_width(fmt, hpp, he->hists);
467 char buf[20];
468
469 if (he->mem_info)
470 addr = cl_offset(he->mem_info->daddr.al_addr);
471
472 return scnprintf(hpp->buf, hpp->size, "%*s", width, HEX_STR(buf, addr));
473 }
474
475 static int64_t
476 offset_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
477 struct hist_entry *left, struct hist_entry *right)
478 {
479 uint64_t l = 0, r = 0;
480
481 if (left->mem_info)
482 l = cl_offset(left->mem_info->daddr.addr);
483 if (right->mem_info)
484 r = cl_offset(right->mem_info->daddr.addr);
485
486 return (int64_t)(r - l);
487 }
488
489 static int
490 iaddr_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
491 struct hist_entry *he)
492 {
493 uint64_t addr = 0;
494 int width = c2c_width(fmt, hpp, he->hists);
495 char buf[20];
496
497 if (he->mem_info)
498 addr = he->mem_info->iaddr.addr;
499
500 return scnprintf(hpp->buf, hpp->size, "%*s", width, HEX_STR(buf, addr));
501 }
502
503 static int64_t
504 iaddr_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
505 struct hist_entry *left, struct hist_entry *right)
506 {
507 return sort__iaddr_cmp(left, right);
508 }
509
510 static int
511 tot_hitm_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
512 struct hist_entry *he)
513 {
514 struct c2c_hist_entry *c2c_he;
515 int width = c2c_width(fmt, hpp, he->hists);
516 unsigned int tot_hitm;
517
518 c2c_he = container_of(he, struct c2c_hist_entry, he);
519 tot_hitm = c2c_he->stats.lcl_hitm + c2c_he->stats.rmt_hitm;
520
521 return scnprintf(hpp->buf, hpp->size, "%*u", width, tot_hitm);
522 }
523
524 static int64_t
525 tot_hitm_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
526 struct hist_entry *left, struct hist_entry *right)
527 {
528 struct c2c_hist_entry *c2c_left;
529 struct c2c_hist_entry *c2c_right;
530 unsigned int tot_hitm_left;
531 unsigned int tot_hitm_right;
532
533 c2c_left = container_of(left, struct c2c_hist_entry, he);
534 c2c_right = container_of(right, struct c2c_hist_entry, he);
535
536 tot_hitm_left = c2c_left->stats.lcl_hitm + c2c_left->stats.rmt_hitm;
537 tot_hitm_right = c2c_right->stats.lcl_hitm + c2c_right->stats.rmt_hitm;
538
539 return tot_hitm_left - tot_hitm_right;
540 }
541
542 #define STAT_FN_ENTRY(__f) \
543 static int \
544 __f ## _entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp, \
545 struct hist_entry *he) \
546 { \
547 struct c2c_hist_entry *c2c_he; \
548 int width = c2c_width(fmt, hpp, he->hists); \
549 \
550 c2c_he = container_of(he, struct c2c_hist_entry, he); \
551 return scnprintf(hpp->buf, hpp->size, "%*u", width, \
552 c2c_he->stats.__f); \
553 }
554
555 #define STAT_FN_CMP(__f) \
556 static int64_t \
557 __f ## _cmp(struct perf_hpp_fmt *fmt __maybe_unused, \
558 struct hist_entry *left, struct hist_entry *right) \
559 { \
560 struct c2c_hist_entry *c2c_left, *c2c_right; \
561 \
562 c2c_left = container_of(left, struct c2c_hist_entry, he); \
563 c2c_right = container_of(right, struct c2c_hist_entry, he); \
564 return c2c_left->stats.__f - c2c_right->stats.__f; \
565 }
566
567 #define STAT_FN(__f) \
568 STAT_FN_ENTRY(__f) \
569 STAT_FN_CMP(__f)
570
571 STAT_FN(rmt_hitm)
572 STAT_FN(lcl_hitm)
573 STAT_FN(store)
574 STAT_FN(st_l1hit)
575 STAT_FN(st_l1miss)
576 STAT_FN(ld_fbhit)
577 STAT_FN(ld_l1hit)
578 STAT_FN(ld_l2hit)
579 STAT_FN(ld_llchit)
580 STAT_FN(rmt_hit)
581
582 static uint64_t llc_miss(struct c2c_stats *stats)
583 {
584 uint64_t llcmiss;
585
586 llcmiss = stats->lcl_dram +
587 stats->rmt_dram +
588 stats->rmt_hitm +
589 stats->rmt_hit;
590
591 return llcmiss;
592 }
593
594 static int
595 ld_llcmiss_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
596 struct hist_entry *he)
597 {
598 struct c2c_hist_entry *c2c_he;
599 int width = c2c_width(fmt, hpp, he->hists);
600
601 c2c_he = container_of(he, struct c2c_hist_entry, he);
602
603 return scnprintf(hpp->buf, hpp->size, "%*lu", width,
604 llc_miss(&c2c_he->stats));
605 }
606
607 static int64_t
608 ld_llcmiss_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
609 struct hist_entry *left, struct hist_entry *right)
610 {
611 struct c2c_hist_entry *c2c_left;
612 struct c2c_hist_entry *c2c_right;
613
614 c2c_left = container_of(left, struct c2c_hist_entry, he);
615 c2c_right = container_of(right, struct c2c_hist_entry, he);
616
617 return llc_miss(&c2c_left->stats) - llc_miss(&c2c_right->stats);
618 }
619
620 static uint64_t total_records(struct c2c_stats *stats)
621 {
622 uint64_t lclmiss, ldcnt, total;
623
624 lclmiss = stats->lcl_dram +
625 stats->rmt_dram +
626 stats->rmt_hitm +
627 stats->rmt_hit;
628
629 ldcnt = lclmiss +
630 stats->ld_fbhit +
631 stats->ld_l1hit +
632 stats->ld_l2hit +
633 stats->ld_llchit +
634 stats->lcl_hitm;
635
636 total = ldcnt +
637 stats->st_l1hit +
638 stats->st_l1miss;
639
640 return total;
641 }
642
643 static int
644 tot_recs_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
645 struct hist_entry *he)
646 {
647 struct c2c_hist_entry *c2c_he;
648 int width = c2c_width(fmt, hpp, he->hists);
649 uint64_t tot_recs;
650
651 c2c_he = container_of(he, struct c2c_hist_entry, he);
652 tot_recs = total_records(&c2c_he->stats);
653
654 return scnprintf(hpp->buf, hpp->size, "%*" PRIu64, width, tot_recs);
655 }
656
657 static int64_t
658 tot_recs_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
659 struct hist_entry *left, struct hist_entry *right)
660 {
661 struct c2c_hist_entry *c2c_left;
662 struct c2c_hist_entry *c2c_right;
663 uint64_t tot_recs_left;
664 uint64_t tot_recs_right;
665
666 c2c_left = container_of(left, struct c2c_hist_entry, he);
667 c2c_right = container_of(right, struct c2c_hist_entry, he);
668
669 tot_recs_left = total_records(&c2c_left->stats);
670 tot_recs_right = total_records(&c2c_right->stats);
671
672 return tot_recs_left - tot_recs_right;
673 }
674
675 static uint64_t total_loads(struct c2c_stats *stats)
676 {
677 uint64_t lclmiss, ldcnt;
678
679 lclmiss = stats->lcl_dram +
680 stats->rmt_dram +
681 stats->rmt_hitm +
682 stats->rmt_hit;
683
684 ldcnt = lclmiss +
685 stats->ld_fbhit +
686 stats->ld_l1hit +
687 stats->ld_l2hit +
688 stats->ld_llchit +
689 stats->lcl_hitm;
690
691 return ldcnt;
692 }
693
694 static int
695 tot_loads_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
696 struct hist_entry *he)
697 {
698 struct c2c_hist_entry *c2c_he;
699 int width = c2c_width(fmt, hpp, he->hists);
700 uint64_t tot_recs;
701
702 c2c_he = container_of(he, struct c2c_hist_entry, he);
703 tot_recs = total_loads(&c2c_he->stats);
704
705 return scnprintf(hpp->buf, hpp->size, "%*" PRIu64, width, tot_recs);
706 }
707
708 static int64_t
709 tot_loads_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
710 struct hist_entry *left, struct hist_entry *right)
711 {
712 struct c2c_hist_entry *c2c_left;
713 struct c2c_hist_entry *c2c_right;
714 uint64_t tot_recs_left;
715 uint64_t tot_recs_right;
716
717 c2c_left = container_of(left, struct c2c_hist_entry, he);
718 c2c_right = container_of(right, struct c2c_hist_entry, he);
719
720 tot_recs_left = total_loads(&c2c_left->stats);
721 tot_recs_right = total_loads(&c2c_right->stats);
722
723 return tot_recs_left - tot_recs_right;
724 }
725
726 typedef double (get_percent_cb)(struct c2c_hist_entry *);
727
728 static int
729 percent_color(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
730 struct hist_entry *he, get_percent_cb get_percent)
731 {
732 struct c2c_hist_entry *c2c_he;
733 int width = c2c_width(fmt, hpp, he->hists);
734 double per;
735
736 c2c_he = container_of(he, struct c2c_hist_entry, he);
737 per = get_percent(c2c_he);
738
739 #ifdef HAVE_SLANG_SUPPORT
740 if (use_browser)
741 return __hpp__slsmg_color_printf(hpp, "%*.2f%%", width - 1, per);
742 #endif
743 return hpp_color_scnprintf(hpp, "%*.2f%%", width - 1, per);
744 }
745
746 static double percent_hitm(struct c2c_hist_entry *c2c_he)
747 {
748 struct c2c_hists *hists;
749 struct c2c_stats *stats;
750 struct c2c_stats *total;
751 int tot = 0, st = 0;
752 double p;
753
754 hists = container_of(c2c_he->he.hists, struct c2c_hists, hists);
755 stats = &c2c_he->stats;
756 total = &hists->stats;
757
758 switch (c2c.display) {
759 case DISPLAY_RMT:
760 st = stats->rmt_hitm;
761 tot = total->rmt_hitm;
762 break;
763 case DISPLAY_LCL:
764 st = stats->lcl_hitm;
765 tot = total->lcl_hitm;
766 break;
767 case DISPLAY_TOT:
768 st = stats->tot_hitm;
769 tot = total->tot_hitm;
770 default:
771 break;
772 }
773
774 p = tot ? (double) st / tot : 0;
775
776 return 100 * p;
777 }
778
779 #define PERC_STR(__s, __v) \
780 ({ \
781 scnprintf(__s, sizeof(__s), "%.2F%%", __v); \
782 __s; \
783 })
784
785 static int
786 percent_hitm_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
787 struct hist_entry *he)
788 {
789 struct c2c_hist_entry *c2c_he;
790 int width = c2c_width(fmt, hpp, he->hists);
791 char buf[10];
792 double per;
793
794 c2c_he = container_of(he, struct c2c_hist_entry, he);
795 per = percent_hitm(c2c_he);
796 return scnprintf(hpp->buf, hpp->size, "%*s", width, PERC_STR(buf, per));
797 }
798
799 static int
800 percent_hitm_color(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
801 struct hist_entry *he)
802 {
803 return percent_color(fmt, hpp, he, percent_hitm);
804 }
805
806 static int64_t
807 percent_hitm_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
808 struct hist_entry *left, struct hist_entry *right)
809 {
810 struct c2c_hist_entry *c2c_left;
811 struct c2c_hist_entry *c2c_right;
812 double per_left;
813 double per_right;
814
815 c2c_left = container_of(left, struct c2c_hist_entry, he);
816 c2c_right = container_of(right, struct c2c_hist_entry, he);
817
818 per_left = percent_hitm(c2c_left);
819 per_right = percent_hitm(c2c_right);
820
821 return per_left - per_right;
822 }
823
824 static struct c2c_stats *he_stats(struct hist_entry *he)
825 {
826 struct c2c_hist_entry *c2c_he;
827
828 c2c_he = container_of(he, struct c2c_hist_entry, he);
829 return &c2c_he->stats;
830 }
831
832 static struct c2c_stats *total_stats(struct hist_entry *he)
833 {
834 struct c2c_hists *hists;
835
836 hists = container_of(he->hists, struct c2c_hists, hists);
837 return &hists->stats;
838 }
839
840 static double percent(int st, int tot)
841 {
842 return tot ? 100. * (double) st / (double) tot : 0;
843 }
844
845 #define PERCENT(__h, __f) percent(he_stats(__h)->__f, total_stats(__h)->__f)
846
847 #define PERCENT_FN(__f) \
848 static double percent_ ## __f(struct c2c_hist_entry *c2c_he) \
849 { \
850 struct c2c_hists *hists; \
851 \
852 hists = container_of(c2c_he->he.hists, struct c2c_hists, hists); \
853 return percent(c2c_he->stats.__f, hists->stats.__f); \
854 }
855
856 PERCENT_FN(rmt_hitm)
857 PERCENT_FN(lcl_hitm)
858 PERCENT_FN(st_l1hit)
859 PERCENT_FN(st_l1miss)
860
861 static int
862 percent_rmt_hitm_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
863 struct hist_entry *he)
864 {
865 int width = c2c_width(fmt, hpp, he->hists);
866 double per = PERCENT(he, rmt_hitm);
867 char buf[10];
868
869 return scnprintf(hpp->buf, hpp->size, "%*s", width, PERC_STR(buf, per));
870 }
871
872 static int
873 percent_rmt_hitm_color(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
874 struct hist_entry *he)
875 {
876 return percent_color(fmt, hpp, he, percent_rmt_hitm);
877 }
878
879 static int64_t
880 percent_rmt_hitm_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
881 struct hist_entry *left, struct hist_entry *right)
882 {
883 double per_left;
884 double per_right;
885
886 per_left = PERCENT(left, lcl_hitm);
887 per_right = PERCENT(right, lcl_hitm);
888
889 return per_left - per_right;
890 }
891
892 static int
893 percent_lcl_hitm_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
894 struct hist_entry *he)
895 {
896 int width = c2c_width(fmt, hpp, he->hists);
897 double per = PERCENT(he, lcl_hitm);
898 char buf[10];
899
900 return scnprintf(hpp->buf, hpp->size, "%*s", width, PERC_STR(buf, per));
901 }
902
903 static int
904 percent_lcl_hitm_color(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
905 struct hist_entry *he)
906 {
907 return percent_color(fmt, hpp, he, percent_lcl_hitm);
908 }
909
910 static int64_t
911 percent_lcl_hitm_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
912 struct hist_entry *left, struct hist_entry *right)
913 {
914 double per_left;
915 double per_right;
916
917 per_left = PERCENT(left, lcl_hitm);
918 per_right = PERCENT(right, lcl_hitm);
919
920 return per_left - per_right;
921 }
922
923 static int
924 percent_stores_l1hit_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
925 struct hist_entry *he)
926 {
927 int width = c2c_width(fmt, hpp, he->hists);
928 double per = PERCENT(he, st_l1hit);
929 char buf[10];
930
931 return scnprintf(hpp->buf, hpp->size, "%*s", width, PERC_STR(buf, per));
932 }
933
934 static int
935 percent_stores_l1hit_color(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
936 struct hist_entry *he)
937 {
938 return percent_color(fmt, hpp, he, percent_st_l1hit);
939 }
940
941 static int64_t
942 percent_stores_l1hit_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
943 struct hist_entry *left, struct hist_entry *right)
944 {
945 double per_left;
946 double per_right;
947
948 per_left = PERCENT(left, st_l1hit);
949 per_right = PERCENT(right, st_l1hit);
950
951 return per_left - per_right;
952 }
953
954 static int
955 percent_stores_l1miss_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
956 struct hist_entry *he)
957 {
958 int width = c2c_width(fmt, hpp, he->hists);
959 double per = PERCENT(he, st_l1miss);
960 char buf[10];
961
962 return scnprintf(hpp->buf, hpp->size, "%*s", width, PERC_STR(buf, per));
963 }
964
965 static int
966 percent_stores_l1miss_color(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
967 struct hist_entry *he)
968 {
969 return percent_color(fmt, hpp, he, percent_st_l1miss);
970 }
971
972 static int64_t
973 percent_stores_l1miss_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
974 struct hist_entry *left, struct hist_entry *right)
975 {
976 double per_left;
977 double per_right;
978
979 per_left = PERCENT(left, st_l1miss);
980 per_right = PERCENT(right, st_l1miss);
981
982 return per_left - per_right;
983 }
984
985 STAT_FN(lcl_dram)
986 STAT_FN(rmt_dram)
987
988 static int
989 pid_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
990 struct hist_entry *he)
991 {
992 int width = c2c_width(fmt, hpp, he->hists);
993
994 return scnprintf(hpp->buf, hpp->size, "%*d", width, he->thread->pid_);
995 }
996
997 static int64_t
998 pid_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
999 struct hist_entry *left, struct hist_entry *right)
1000 {
1001 return left->thread->pid_ - right->thread->pid_;
1002 }
1003
1004 static int64_t
1005 empty_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
1006 struct hist_entry *left __maybe_unused,
1007 struct hist_entry *right __maybe_unused)
1008 {
1009 return 0;
1010 }
1011
1012 static int
1013 node_entry(struct perf_hpp_fmt *fmt __maybe_unused, struct perf_hpp *hpp,
1014 struct hist_entry *he)
1015 {
1016 struct c2c_hist_entry *c2c_he;
1017 bool first = true;
1018 int node;
1019 int ret = 0;
1020
1021 c2c_he = container_of(he, struct c2c_hist_entry, he);
1022
1023 for (node = 0; node < c2c.nodes_cnt; node++) {
1024 DECLARE_BITMAP(set, c2c.cpus_cnt);
1025
1026 bitmap_zero(set, c2c.cpus_cnt);
1027 bitmap_and(set, c2c_he->cpuset, c2c.nodes[node], c2c.cpus_cnt);
1028
1029 if (!bitmap_weight(set, c2c.cpus_cnt)) {
1030 if (c2c.node_info == 1) {
1031 ret = scnprintf(hpp->buf, hpp->size, "%21s", " ");
1032 advance_hpp(hpp, ret);
1033 }
1034 continue;
1035 }
1036
1037 if (!first) {
1038 ret = scnprintf(hpp->buf, hpp->size, " ");
1039 advance_hpp(hpp, ret);
1040 }
1041
1042 switch (c2c.node_info) {
1043 case 0:
1044 ret = scnprintf(hpp->buf, hpp->size, "%2d", node);
1045 advance_hpp(hpp, ret);
1046 break;
1047 case 1:
1048 {
1049 int num = bitmap_weight(c2c_he->cpuset, c2c.cpus_cnt);
1050 struct c2c_stats *stats = &c2c_he->node_stats[node];
1051
1052 ret = scnprintf(hpp->buf, hpp->size, "%2d{%2d ", node, num);
1053 advance_hpp(hpp, ret);
1054
1055 #define DISPLAY_HITM(__h) \
1056 if (c2c_he->stats.__h> 0) { \
1057 ret = scnprintf(hpp->buf, hpp->size, "%5.1f%% ", \
1058 percent(stats->__h, c2c_he->stats.__h));\
1059 } else { \
1060 ret = scnprintf(hpp->buf, hpp->size, "%6s ", "n/a"); \
1061 }
1062
1063 switch (c2c.display) {
1064 case DISPLAY_RMT:
1065 DISPLAY_HITM(rmt_hitm);
1066 break;
1067 case DISPLAY_LCL:
1068 DISPLAY_HITM(lcl_hitm);
1069 break;
1070 case DISPLAY_TOT:
1071 DISPLAY_HITM(tot_hitm);
1072 default:
1073 break;
1074 }
1075
1076 #undef DISPLAY_HITM
1077
1078 advance_hpp(hpp, ret);
1079
1080 if (c2c_he->stats.store > 0) {
1081 ret = scnprintf(hpp->buf, hpp->size, "%5.1f%%}",
1082 percent(stats->store, c2c_he->stats.store));
1083 } else {
1084 ret = scnprintf(hpp->buf, hpp->size, "%6s}", "n/a");
1085 }
1086
1087 advance_hpp(hpp, ret);
1088 break;
1089 }
1090 case 2:
1091 ret = scnprintf(hpp->buf, hpp->size, "%2d{", node);
1092 advance_hpp(hpp, ret);
1093
1094 ret = bitmap_scnprintf(set, c2c.cpus_cnt, hpp->buf, hpp->size);
1095 advance_hpp(hpp, ret);
1096
1097 ret = scnprintf(hpp->buf, hpp->size, "}");
1098 advance_hpp(hpp, ret);
1099 break;
1100 default:
1101 break;
1102 }
1103
1104 first = false;
1105 }
1106
1107 return 0;
1108 }
1109
1110 static int
1111 mean_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
1112 struct hist_entry *he, double mean)
1113 {
1114 int width = c2c_width(fmt, hpp, he->hists);
1115 char buf[10];
1116
1117 scnprintf(buf, 10, "%6.0f", mean);
1118 return scnprintf(hpp->buf, hpp->size, "%*s", width, buf);
1119 }
1120
1121 #define MEAN_ENTRY(__func, __val) \
1122 static int \
1123 __func(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp, struct hist_entry *he) \
1124 { \
1125 struct c2c_hist_entry *c2c_he; \
1126 c2c_he = container_of(he, struct c2c_hist_entry, he); \
1127 return mean_entry(fmt, hpp, he, avg_stats(&c2c_he->cstats.__val)); \
1128 }
1129
1130 MEAN_ENTRY(mean_rmt_entry, rmt_hitm);
1131 MEAN_ENTRY(mean_lcl_entry, lcl_hitm);
1132 MEAN_ENTRY(mean_load_entry, load);
1133
1134 static int
1135 cpucnt_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
1136 struct hist_entry *he)
1137 {
1138 struct c2c_hist_entry *c2c_he;
1139 int width = c2c_width(fmt, hpp, he->hists);
1140 char buf[10];
1141
1142 c2c_he = container_of(he, struct c2c_hist_entry, he);
1143
1144 scnprintf(buf, 10, "%d", bitmap_weight(c2c_he->cpuset, c2c.cpus_cnt));
1145 return scnprintf(hpp->buf, hpp->size, "%*s", width, buf);
1146 }
1147
1148 static int
1149 cl_idx_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
1150 struct hist_entry *he)
1151 {
1152 struct c2c_hist_entry *c2c_he;
1153 int width = c2c_width(fmt, hpp, he->hists);
1154 char buf[10];
1155
1156 c2c_he = container_of(he, struct c2c_hist_entry, he);
1157
1158 scnprintf(buf, 10, "%u", c2c_he->cacheline_idx);
1159 return scnprintf(hpp->buf, hpp->size, "%*s", width, buf);
1160 }
1161
1162 static int
1163 cl_idx_empty_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
1164 struct hist_entry *he)
1165 {
1166 int width = c2c_width(fmt, hpp, he->hists);
1167
1168 return scnprintf(hpp->buf, hpp->size, "%*s", width, "");
1169 }
1170
1171 #define HEADER_LOW(__h) \
1172 { \
1173 .line[1] = { \
1174 .text = __h, \
1175 }, \
1176 }
1177
1178 #define HEADER_BOTH(__h0, __h1) \
1179 { \
1180 .line[0] = { \
1181 .text = __h0, \
1182 }, \
1183 .line[1] = { \
1184 .text = __h1, \
1185 }, \
1186 }
1187
1188 #define HEADER_SPAN(__h0, __h1, __s) \
1189 { \
1190 .line[0] = { \
1191 .text = __h0, \
1192 .span = __s, \
1193 }, \
1194 .line[1] = { \
1195 .text = __h1, \
1196 }, \
1197 }
1198
1199 #define HEADER_SPAN_LOW(__h) \
1200 { \
1201 .line[1] = { \
1202 .text = __h, \
1203 }, \
1204 }
1205
1206 static struct c2c_dimension dim_dcacheline = {
1207 .header = HEADER_LOW("Cacheline"),
1208 .name = "dcacheline",
1209 .cmp = dcacheline_cmp,
1210 .entry = dcacheline_entry,
1211 .width = 18,
1212 };
1213
1214 static struct c2c_header header_offset_tui = HEADER_LOW("Off");
1215
1216 static struct c2c_dimension dim_offset = {
1217 .header = HEADER_BOTH("Data address", "Offset"),
1218 .name = "offset",
1219 .cmp = offset_cmp,
1220 .entry = offset_entry,
1221 .width = 18,
1222 };
1223
1224 static struct c2c_dimension dim_iaddr = {
1225 .header = HEADER_LOW("Code address"),
1226 .name = "iaddr",
1227 .cmp = iaddr_cmp,
1228 .entry = iaddr_entry,
1229 .width = 18,
1230 };
1231
1232 static struct c2c_dimension dim_tot_hitm = {
1233 .header = HEADER_SPAN("----- LLC Load Hitm -----", "Total", 2),
1234 .name = "tot_hitm",
1235 .cmp = tot_hitm_cmp,
1236 .entry = tot_hitm_entry,
1237 .width = 7,
1238 };
1239
1240 static struct c2c_dimension dim_lcl_hitm = {
1241 .header = HEADER_SPAN_LOW("Lcl"),
1242 .name = "lcl_hitm",
1243 .cmp = lcl_hitm_cmp,
1244 .entry = lcl_hitm_entry,
1245 .width = 7,
1246 };
1247
1248 static struct c2c_dimension dim_rmt_hitm = {
1249 .header = HEADER_SPAN_LOW("Rmt"),
1250 .name = "rmt_hitm",
1251 .cmp = rmt_hitm_cmp,
1252 .entry = rmt_hitm_entry,
1253 .width = 7,
1254 };
1255
1256 static struct c2c_dimension dim_cl_rmt_hitm = {
1257 .header = HEADER_SPAN("----- HITM -----", "Rmt", 1),
1258 .name = "cl_rmt_hitm",
1259 .cmp = rmt_hitm_cmp,
1260 .entry = rmt_hitm_entry,
1261 .width = 7,
1262 };
1263
1264 static struct c2c_dimension dim_cl_lcl_hitm = {
1265 .header = HEADER_SPAN_LOW("Lcl"),
1266 .name = "cl_lcl_hitm",
1267 .cmp = lcl_hitm_cmp,
1268 .entry = lcl_hitm_entry,
1269 .width = 7,
1270 };
1271
1272 static struct c2c_dimension dim_stores = {
1273 .header = HEADER_SPAN("---- Store Reference ----", "Total", 2),
1274 .name = "stores",
1275 .cmp = store_cmp,
1276 .entry = store_entry,
1277 .width = 7,
1278 };
1279
1280 static struct c2c_dimension dim_stores_l1hit = {
1281 .header = HEADER_SPAN_LOW("L1Hit"),
1282 .name = "stores_l1hit",
1283 .cmp = st_l1hit_cmp,
1284 .entry = st_l1hit_entry,
1285 .width = 7,
1286 };
1287
1288 static struct c2c_dimension dim_stores_l1miss = {
1289 .header = HEADER_SPAN_LOW("L1Miss"),
1290 .name = "stores_l1miss",
1291 .cmp = st_l1miss_cmp,
1292 .entry = st_l1miss_entry,
1293 .width = 7,
1294 };
1295
1296 static struct c2c_dimension dim_cl_stores_l1hit = {
1297 .header = HEADER_SPAN("-- Store Refs --", "L1 Hit", 1),
1298 .name = "cl_stores_l1hit",
1299 .cmp = st_l1hit_cmp,
1300 .entry = st_l1hit_entry,
1301 .width = 7,
1302 };
1303
1304 static struct c2c_dimension dim_cl_stores_l1miss = {
1305 .header = HEADER_SPAN_LOW("L1 Miss"),
1306 .name = "cl_stores_l1miss",
1307 .cmp = st_l1miss_cmp,
1308 .entry = st_l1miss_entry,
1309 .width = 7,
1310 };
1311
1312 static struct c2c_dimension dim_ld_fbhit = {
1313 .header = HEADER_SPAN("----- Core Load Hit -----", "FB", 2),
1314 .name = "ld_fbhit",
1315 .cmp = ld_fbhit_cmp,
1316 .entry = ld_fbhit_entry,
1317 .width = 7,
1318 };
1319
1320 static struct c2c_dimension dim_ld_l1hit = {
1321 .header = HEADER_SPAN_LOW("L1"),
1322 .name = "ld_l1hit",
1323 .cmp = ld_l1hit_cmp,
1324 .entry = ld_l1hit_entry,
1325 .width = 7,
1326 };
1327
1328 static struct c2c_dimension dim_ld_l2hit = {
1329 .header = HEADER_SPAN_LOW("L2"),
1330 .name = "ld_l2hit",
1331 .cmp = ld_l2hit_cmp,
1332 .entry = ld_l2hit_entry,
1333 .width = 7,
1334 };
1335
1336 static struct c2c_dimension dim_ld_llchit = {
1337 .header = HEADER_SPAN("-- LLC Load Hit --", "Llc", 1),
1338 .name = "ld_lclhit",
1339 .cmp = ld_llchit_cmp,
1340 .entry = ld_llchit_entry,
1341 .width = 8,
1342 };
1343
1344 static struct c2c_dimension dim_ld_rmthit = {
1345 .header = HEADER_SPAN_LOW("Rmt"),
1346 .name = "ld_rmthit",
1347 .cmp = rmt_hit_cmp,
1348 .entry = rmt_hit_entry,
1349 .width = 8,
1350 };
1351
1352 static struct c2c_dimension dim_ld_llcmiss = {
1353 .header = HEADER_BOTH("LLC", "Ld Miss"),
1354 .name = "ld_llcmiss",
1355 .cmp = ld_llcmiss_cmp,
1356 .entry = ld_llcmiss_entry,
1357 .width = 7,
1358 };
1359
1360 static struct c2c_dimension dim_tot_recs = {
1361 .header = HEADER_BOTH("Total", "records"),
1362 .name = "tot_recs",
1363 .cmp = tot_recs_cmp,
1364 .entry = tot_recs_entry,
1365 .width = 7,
1366 };
1367
1368 static struct c2c_dimension dim_tot_loads = {
1369 .header = HEADER_BOTH("Total", "Loads"),
1370 .name = "tot_loads",
1371 .cmp = tot_loads_cmp,
1372 .entry = tot_loads_entry,
1373 .width = 7,
1374 };
1375
1376 static struct c2c_header percent_hitm_header[] = {
1377 [DISPLAY_LCL] = HEADER_BOTH("Lcl", "Hitm"),
1378 [DISPLAY_RMT] = HEADER_BOTH("Rmt", "Hitm"),
1379 [DISPLAY_TOT] = HEADER_BOTH("Tot", "Hitm"),
1380 };
1381
1382 static struct c2c_dimension dim_percent_hitm = {
1383 .name = "percent_hitm",
1384 .cmp = percent_hitm_cmp,
1385 .entry = percent_hitm_entry,
1386 .color = percent_hitm_color,
1387 .width = 7,
1388 };
1389
1390 static struct c2c_dimension dim_percent_rmt_hitm = {
1391 .header = HEADER_SPAN("----- HITM -----", "Rmt", 1),
1392 .name = "percent_rmt_hitm",
1393 .cmp = percent_rmt_hitm_cmp,
1394 .entry = percent_rmt_hitm_entry,
1395 .color = percent_rmt_hitm_color,
1396 .width = 7,
1397 };
1398
1399 static struct c2c_dimension dim_percent_lcl_hitm = {
1400 .header = HEADER_SPAN_LOW("Lcl"),
1401 .name = "percent_lcl_hitm",
1402 .cmp = percent_lcl_hitm_cmp,
1403 .entry = percent_lcl_hitm_entry,
1404 .color = percent_lcl_hitm_color,
1405 .width = 7,
1406 };
1407
1408 static struct c2c_dimension dim_percent_stores_l1hit = {
1409 .header = HEADER_SPAN("-- Store Refs --", "L1 Hit", 1),
1410 .name = "percent_stores_l1hit",
1411 .cmp = percent_stores_l1hit_cmp,
1412 .entry = percent_stores_l1hit_entry,
1413 .color = percent_stores_l1hit_color,
1414 .width = 7,
1415 };
1416
1417 static struct c2c_dimension dim_percent_stores_l1miss = {
1418 .header = HEADER_SPAN_LOW("L1 Miss"),
1419 .name = "percent_stores_l1miss",
1420 .cmp = percent_stores_l1miss_cmp,
1421 .entry = percent_stores_l1miss_entry,
1422 .color = percent_stores_l1miss_color,
1423 .width = 7,
1424 };
1425
1426 static struct c2c_dimension dim_dram_lcl = {
1427 .header = HEADER_SPAN("--- Load Dram ----", "Lcl", 1),
1428 .name = "dram_lcl",
1429 .cmp = lcl_dram_cmp,
1430 .entry = lcl_dram_entry,
1431 .width = 8,
1432 };
1433
1434 static struct c2c_dimension dim_dram_rmt = {
1435 .header = HEADER_SPAN_LOW("Rmt"),
1436 .name = "dram_rmt",
1437 .cmp = rmt_dram_cmp,
1438 .entry = rmt_dram_entry,
1439 .width = 8,
1440 };
1441
1442 static struct c2c_dimension dim_pid = {
1443 .header = HEADER_LOW("Pid"),
1444 .name = "pid",
1445 .cmp = pid_cmp,
1446 .entry = pid_entry,
1447 .width = 7,
1448 };
1449
1450 static struct c2c_dimension dim_tid = {
1451 .header = HEADER_LOW("Tid"),
1452 .name = "tid",
1453 .se = &sort_thread,
1454 };
1455
1456 static struct c2c_dimension dim_symbol = {
1457 .name = "symbol",
1458 .se = &sort_sym,
1459 };
1460
1461 static struct c2c_dimension dim_dso = {
1462 .header = HEADER_BOTH("Shared", "Object"),
1463 .name = "dso",
1464 .se = &sort_dso,
1465 };
1466
1467 static struct c2c_header header_node[3] = {
1468 HEADER_LOW("Node"),
1469 HEADER_LOW("Node{cpus %hitms %stores}"),
1470 HEADER_LOW("Node{cpu list}"),
1471 };
1472
1473 static struct c2c_dimension dim_node = {
1474 .name = "node",
1475 .cmp = empty_cmp,
1476 .entry = node_entry,
1477 .width = 4,
1478 };
1479
1480 static struct c2c_dimension dim_mean_rmt = {
1481 .header = HEADER_SPAN("---------- cycles ----------", "rmt hitm", 2),
1482 .name = "mean_rmt",
1483 .cmp = empty_cmp,
1484 .entry = mean_rmt_entry,
1485 .width = 8,
1486 };
1487
1488 static struct c2c_dimension dim_mean_lcl = {
1489 .header = HEADER_SPAN_LOW("lcl hitm"),
1490 .name = "mean_lcl",
1491 .cmp = empty_cmp,
1492 .entry = mean_lcl_entry,
1493 .width = 8,
1494 };
1495
1496 static struct c2c_dimension dim_mean_load = {
1497 .header = HEADER_SPAN_LOW("load"),
1498 .name = "mean_load",
1499 .cmp = empty_cmp,
1500 .entry = mean_load_entry,
1501 .width = 8,
1502 };
1503
1504 static struct c2c_dimension dim_cpucnt = {
1505 .header = HEADER_BOTH("cpu", "cnt"),
1506 .name = "cpucnt",
1507 .cmp = empty_cmp,
1508 .entry = cpucnt_entry,
1509 .width = 8,
1510 };
1511
1512 static struct c2c_dimension dim_srcline = {
1513 .name = "cl_srcline",
1514 .se = &sort_srcline,
1515 };
1516
1517 static struct c2c_dimension dim_dcacheline_idx = {
1518 .header = HEADER_LOW("Index"),
1519 .name = "cl_idx",
1520 .cmp = empty_cmp,
1521 .entry = cl_idx_entry,
1522 .width = 5,
1523 };
1524
1525 static struct c2c_dimension dim_dcacheline_num = {
1526 .header = HEADER_LOW("Num"),
1527 .name = "cl_num",
1528 .cmp = empty_cmp,
1529 .entry = cl_idx_entry,
1530 .width = 5,
1531 };
1532
1533 static struct c2c_dimension dim_dcacheline_num_empty = {
1534 .header = HEADER_LOW("Num"),
1535 .name = "cl_num_empty",
1536 .cmp = empty_cmp,
1537 .entry = cl_idx_empty_entry,
1538 .width = 5,
1539 };
1540
1541 static struct c2c_dimension *dimensions[] = {
1542 &dim_dcacheline,
1543 &dim_offset,
1544 &dim_iaddr,
1545 &dim_tot_hitm,
1546 &dim_lcl_hitm,
1547 &dim_rmt_hitm,
1548 &dim_cl_lcl_hitm,
1549 &dim_cl_rmt_hitm,
1550 &dim_stores,
1551 &dim_stores_l1hit,
1552 &dim_stores_l1miss,
1553 &dim_cl_stores_l1hit,
1554 &dim_cl_stores_l1miss,
1555 &dim_ld_fbhit,
1556 &dim_ld_l1hit,
1557 &dim_ld_l2hit,
1558 &dim_ld_llchit,
1559 &dim_ld_rmthit,
1560 &dim_ld_llcmiss,
1561 &dim_tot_recs,
1562 &dim_tot_loads,
1563 &dim_percent_hitm,
1564 &dim_percent_rmt_hitm,
1565 &dim_percent_lcl_hitm,
1566 &dim_percent_stores_l1hit,
1567 &dim_percent_stores_l1miss,
1568 &dim_dram_lcl,
1569 &dim_dram_rmt,
1570 &dim_pid,
1571 &dim_tid,
1572 &dim_symbol,
1573 &dim_dso,
1574 &dim_node,
1575 &dim_mean_rmt,
1576 &dim_mean_lcl,
1577 &dim_mean_load,
1578 &dim_cpucnt,
1579 &dim_srcline,
1580 &dim_dcacheline_idx,
1581 &dim_dcacheline_num,
1582 &dim_dcacheline_num_empty,
1583 NULL,
1584 };
1585
1586 static void fmt_free(struct perf_hpp_fmt *fmt)
1587 {
1588 struct c2c_fmt *c2c_fmt;
1589
1590 c2c_fmt = container_of(fmt, struct c2c_fmt, fmt);
1591 free(c2c_fmt);
1592 }
1593
1594 static bool fmt_equal(struct perf_hpp_fmt *a, struct perf_hpp_fmt *b)
1595 {
1596 struct c2c_fmt *c2c_a = container_of(a, struct c2c_fmt, fmt);
1597 struct c2c_fmt *c2c_b = container_of(b, struct c2c_fmt, fmt);
1598
1599 return c2c_a->dim == c2c_b->dim;
1600 }
1601
1602 static struct c2c_dimension *get_dimension(const char *name)
1603 {
1604 unsigned int i;
1605
1606 for (i = 0; dimensions[i]; i++) {
1607 struct c2c_dimension *dim = dimensions[i];
1608
1609 if (!strcmp(dim->name, name))
1610 return dim;
1611 };
1612
1613 return NULL;
1614 }
1615
1616 static int c2c_se_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
1617 struct hist_entry *he)
1618 {
1619 struct c2c_fmt *c2c_fmt = container_of(fmt, struct c2c_fmt, fmt);
1620 struct c2c_dimension *dim = c2c_fmt->dim;
1621 size_t len = fmt->user_len;
1622
1623 if (!len) {
1624 len = hists__col_len(he->hists, dim->se->se_width_idx);
1625
1626 if (dim == &dim_symbol || dim == &dim_srcline)
1627 len = symbol_width(he->hists, dim->se);
1628 }
1629
1630 return dim->se->se_snprintf(he, hpp->buf, hpp->size, len);
1631 }
1632
1633 static int64_t c2c_se_cmp(struct perf_hpp_fmt *fmt,
1634 struct hist_entry *a, struct hist_entry *b)
1635 {
1636 struct c2c_fmt *c2c_fmt = container_of(fmt, struct c2c_fmt, fmt);
1637 struct c2c_dimension *dim = c2c_fmt->dim;
1638
1639 return dim->se->se_cmp(a, b);
1640 }
1641
1642 static int64_t c2c_se_collapse(struct perf_hpp_fmt *fmt,
1643 struct hist_entry *a, struct hist_entry *b)
1644 {
1645 struct c2c_fmt *c2c_fmt = container_of(fmt, struct c2c_fmt, fmt);
1646 struct c2c_dimension *dim = c2c_fmt->dim;
1647 int64_t (*collapse_fn)(struct hist_entry *, struct hist_entry *);
1648
1649 collapse_fn = dim->se->se_collapse ?: dim->se->se_cmp;
1650 return collapse_fn(a, b);
1651 }
1652
1653 static struct c2c_fmt *get_format(const char *name)
1654 {
1655 struct c2c_dimension *dim = get_dimension(name);
1656 struct c2c_fmt *c2c_fmt;
1657 struct perf_hpp_fmt *fmt;
1658
1659 if (!dim)
1660 return NULL;
1661
1662 c2c_fmt = zalloc(sizeof(*c2c_fmt));
1663 if (!c2c_fmt)
1664 return NULL;
1665
1666 c2c_fmt->dim = dim;
1667
1668 fmt = &c2c_fmt->fmt;
1669 INIT_LIST_HEAD(&fmt->list);
1670 INIT_LIST_HEAD(&fmt->sort_list);
1671
1672 fmt->cmp = dim->se ? c2c_se_cmp : dim->cmp;
1673 fmt->sort = dim->se ? c2c_se_cmp : dim->cmp;
1674 fmt->color = dim->se ? NULL : dim->color;
1675 fmt->entry = dim->se ? c2c_se_entry : dim->entry;
1676 fmt->header = c2c_header;
1677 fmt->width = c2c_width;
1678 fmt->collapse = dim->se ? c2c_se_collapse : dim->cmp;
1679 fmt->equal = fmt_equal;
1680 fmt->free = fmt_free;
1681
1682 return c2c_fmt;
1683 }
1684
1685 static int c2c_hists__init_output(struct perf_hpp_list *hpp_list, char *name)
1686 {
1687 struct c2c_fmt *c2c_fmt = get_format(name);
1688
1689 if (!c2c_fmt) {
1690 reset_dimensions();
1691 return output_field_add(hpp_list, name);
1692 }
1693
1694 perf_hpp_list__column_register(hpp_list, &c2c_fmt->fmt);
1695 return 0;
1696 }
1697
1698 static int c2c_hists__init_sort(struct perf_hpp_list *hpp_list, char *name)
1699 {
1700 struct c2c_fmt *c2c_fmt = get_format(name);
1701 struct c2c_dimension *dim;
1702
1703 if (!c2c_fmt) {
1704 reset_dimensions();
1705 return sort_dimension__add(hpp_list, name, NULL, 0);
1706 }
1707
1708 dim = c2c_fmt->dim;
1709 if (dim == &dim_dso)
1710 hpp_list->dso = 1;
1711
1712 perf_hpp_list__register_sort_field(hpp_list, &c2c_fmt->fmt);
1713 return 0;
1714 }
1715
1716 #define PARSE_LIST(_list, _fn) \
1717 do { \
1718 char *tmp, *tok; \
1719 ret = 0; \
1720 \
1721 if (!_list) \
1722 break; \
1723 \
1724 for (tok = strtok_r((char *)_list, ", ", &tmp); \
1725 tok; tok = strtok_r(NULL, ", ", &tmp)) { \
1726 ret = _fn(hpp_list, tok); \
1727 if (ret == -EINVAL) { \
1728 pr_err("Invalid --fields key: `%s'", tok); \
1729 break; \
1730 } else if (ret == -ESRCH) { \
1731 pr_err("Unknown --fields key: `%s'", tok); \
1732 break; \
1733 } \
1734 } \
1735 } while (0)
1736
1737 static int hpp_list__parse(struct perf_hpp_list *hpp_list,
1738 const char *output_,
1739 const char *sort_)
1740 {
1741 char *output = output_ ? strdup(output_) : NULL;
1742 char *sort = sort_ ? strdup(sort_) : NULL;
1743 int ret;
1744
1745 PARSE_LIST(output, c2c_hists__init_output);
1746 PARSE_LIST(sort, c2c_hists__init_sort);
1747
1748 /* copy sort keys to output fields */
1749 perf_hpp__setup_output_field(hpp_list);
1750
1751 /*
1752 * We dont need other sorting keys other than those
1753 * we already specified. It also really slows down
1754 * the processing a lot with big number of output
1755 * fields, so switching this off for c2c.
1756 */
1757
1758 #if 0
1759 /* and then copy output fields to sort keys */
1760 perf_hpp__append_sort_keys(&hists->list);
1761 #endif
1762
1763 free(output);
1764 free(sort);
1765 return ret;
1766 }
1767
1768 static int c2c_hists__init(struct c2c_hists *hists,
1769 const char *sort,
1770 int nr_header_lines)
1771 {
1772 __hists__init(&hists->hists, &hists->list);
1773
1774 /*
1775 * Initialize only with sort fields, we need to resort
1776 * later anyway, and that's where we add output fields
1777 * as well.
1778 */
1779 perf_hpp_list__init(&hists->list);
1780
1781 /* Overload number of header lines.*/
1782 hists->list.nr_header_lines = nr_header_lines;
1783
1784 return hpp_list__parse(&hists->list, NULL, sort);
1785 }
1786
1787 static int c2c_hists__reinit(struct c2c_hists *c2c_hists,
1788 const char *output,
1789 const char *sort)
1790 {
1791 perf_hpp__reset_output_field(&c2c_hists->list);
1792 return hpp_list__parse(&c2c_hists->list, output, sort);
1793 }
1794
1795 #define DISPLAY_LINE_LIMIT 0.0005
1796
1797 static bool he__display(struct hist_entry *he, struct c2c_stats *stats)
1798 {
1799 struct c2c_hist_entry *c2c_he;
1800 double ld_dist;
1801
1802 if (c2c.show_all)
1803 return true;
1804
1805 c2c_he = container_of(he, struct c2c_hist_entry, he);
1806
1807 #define FILTER_HITM(__h) \
1808 if (stats->__h) { \
1809 ld_dist = ((double)c2c_he->stats.__h / stats->__h); \
1810 if (ld_dist < DISPLAY_LINE_LIMIT) \
1811 he->filtered = HIST_FILTER__C2C; \
1812 } else { \
1813 he->filtered = HIST_FILTER__C2C; \
1814 }
1815
1816 switch (c2c.display) {
1817 case DISPLAY_LCL:
1818 FILTER_HITM(lcl_hitm);
1819 break;
1820 case DISPLAY_RMT:
1821 FILTER_HITM(rmt_hitm);
1822 break;
1823 case DISPLAY_TOT:
1824 FILTER_HITM(tot_hitm);
1825 default:
1826 break;
1827 };
1828
1829 #undef FILTER_HITM
1830
1831 return he->filtered == 0;
1832 }
1833
1834 static inline int valid_hitm_or_store(struct hist_entry *he)
1835 {
1836 struct c2c_hist_entry *c2c_he;
1837 bool has_hitm;
1838
1839 c2c_he = container_of(he, struct c2c_hist_entry, he);
1840 has_hitm = c2c.display == DISPLAY_TOT ? c2c_he->stats.tot_hitm :
1841 c2c.display == DISPLAY_LCL ? c2c_he->stats.lcl_hitm :
1842 c2c_he->stats.rmt_hitm;
1843 return has_hitm || c2c_he->stats.store;
1844 }
1845
1846 static void calc_width(struct hist_entry *he)
1847 {
1848 struct c2c_hists *c2c_hists;
1849
1850 c2c_hists = container_of(he->hists, struct c2c_hists, hists);
1851 hists__calc_col_len(&c2c_hists->hists, he);
1852 }
1853
1854 static int filter_cb(struct hist_entry *he)
1855 {
1856 if (c2c.show_src && !he->srcline)
1857 he->srcline = hist_entry__get_srcline(he);
1858
1859 calc_width(he);
1860
1861 if (!valid_hitm_or_store(he))
1862 he->filtered = HIST_FILTER__C2C;
1863
1864 return 0;
1865 }
1866
1867 static int resort_cl_cb(struct hist_entry *he)
1868 {
1869 struct c2c_hist_entry *c2c_he;
1870 struct c2c_hists *c2c_hists;
1871 bool display = he__display(he, &c2c.hitm_stats);
1872
1873 c2c_he = container_of(he, struct c2c_hist_entry, he);
1874 c2c_hists = c2c_he->hists;
1875
1876 calc_width(he);
1877
1878 if (display && c2c_hists) {
1879 static unsigned int idx;
1880
1881 c2c_he->cacheline_idx = idx++;
1882
1883 c2c_hists__reinit(c2c_hists, c2c.cl_output, c2c.cl_resort);
1884
1885 hists__collapse_resort(&c2c_hists->hists, NULL);
1886 hists__output_resort_cb(&c2c_hists->hists, NULL, filter_cb);
1887 }
1888
1889 return 0;
1890 }
1891
1892 static void setup_nodes_header(void)
1893 {
1894 dim_node.header = header_node[c2c.node_info];
1895 }
1896
1897 static int setup_nodes(struct perf_session *session)
1898 {
1899 struct numa_node *n;
1900 unsigned long **nodes;
1901 int node, cpu;
1902 int *cpu2node;
1903
1904 if (c2c.node_info > 2)
1905 c2c.node_info = 2;
1906
1907 c2c.nodes_cnt = session->header.env.nr_numa_nodes;
1908 c2c.cpus_cnt = session->header.env.nr_cpus_online;
1909
1910 n = session->header.env.numa_nodes;
1911 if (!n)
1912 return -EINVAL;
1913
1914 nodes = zalloc(sizeof(unsigned long *) * c2c.nodes_cnt);
1915 if (!nodes)
1916 return -ENOMEM;
1917
1918 c2c.nodes = nodes;
1919
1920 cpu2node = zalloc(sizeof(int) * c2c.cpus_cnt);
1921 if (!cpu2node)
1922 return -ENOMEM;
1923
1924 for (cpu = 0; cpu < c2c.cpus_cnt; cpu++)
1925 cpu2node[cpu] = -1;
1926
1927 c2c.cpu2node = cpu2node;
1928
1929 for (node = 0; node < c2c.nodes_cnt; node++) {
1930 struct cpu_map *map = n[node].map;
1931 unsigned long *set;
1932
1933 set = bitmap_alloc(c2c.cpus_cnt);
1934 if (!set)
1935 return -ENOMEM;
1936
1937 for (cpu = 0; cpu < map->nr; cpu++) {
1938 set_bit(map->map[cpu], set);
1939
1940 if (WARN_ONCE(cpu2node[map->map[cpu]] != -1, "node/cpu topology bug"))
1941 return -EINVAL;
1942
1943 cpu2node[map->map[cpu]] = node;
1944 }
1945
1946 nodes[node] = set;
1947 }
1948
1949 setup_nodes_header();
1950 return 0;
1951 }
1952
1953 #define HAS_HITMS(__h) ((__h)->stats.lcl_hitm || (__h)->stats.rmt_hitm)
1954
1955 static int resort_hitm_cb(struct hist_entry *he)
1956 {
1957 struct c2c_hist_entry *c2c_he;
1958 c2c_he = container_of(he, struct c2c_hist_entry, he);
1959
1960 if (HAS_HITMS(c2c_he)) {
1961 c2c.shared_clines++;
1962 c2c_add_stats(&c2c.hitm_stats, &c2c_he->stats);
1963 }
1964
1965 return 0;
1966 }
1967
1968 static int hists__iterate_cb(struct hists *hists, hists__resort_cb_t cb)
1969 {
1970 struct rb_node *next = rb_first(&hists->entries);
1971 int ret = 0;
1972
1973 while (next) {
1974 struct hist_entry *he;
1975
1976 he = rb_entry(next, struct hist_entry, rb_node);
1977 ret = cb(he);
1978 if (ret)
1979 break;
1980 next = rb_next(&he->rb_node);
1981 }
1982
1983 return ret;
1984 }
1985
1986 static void print_c2c__display_stats(FILE *out)
1987 {
1988 int llc_misses;
1989 struct c2c_stats *stats = &c2c.hists.stats;
1990
1991 llc_misses = stats->lcl_dram +
1992 stats->rmt_dram +
1993 stats->rmt_hit +
1994 stats->rmt_hitm;
1995
1996 fprintf(out, "=================================================\n");
1997 fprintf(out, " Trace Event Information \n");
1998 fprintf(out, "=================================================\n");
1999 fprintf(out, " Total records : %10d\n", stats->nr_entries);
2000 fprintf(out, " Locked Load/Store Operations : %10d\n", stats->locks);
2001 fprintf(out, " Load Operations : %10d\n", stats->load);
2002 fprintf(out, " Loads - uncacheable : %10d\n", stats->ld_uncache);
2003 fprintf(out, " Loads - IO : %10d\n", stats->ld_io);
2004 fprintf(out, " Loads - Miss : %10d\n", stats->ld_miss);
2005 fprintf(out, " Loads - no mapping : %10d\n", stats->ld_noadrs);
2006 fprintf(out, " Load Fill Buffer Hit : %10d\n", stats->ld_fbhit);
2007 fprintf(out, " Load L1D hit : %10d\n", stats->ld_l1hit);
2008 fprintf(out, " Load L2D hit : %10d\n", stats->ld_l2hit);
2009 fprintf(out, " Load LLC hit : %10d\n", stats->ld_llchit + stats->lcl_hitm);
2010 fprintf(out, " Load Local HITM : %10d\n", stats->lcl_hitm);
2011 fprintf(out, " Load Remote HITM : %10d\n", stats->rmt_hitm);
2012 fprintf(out, " Load Remote HIT : %10d\n", stats->rmt_hit);
2013 fprintf(out, " Load Local DRAM : %10d\n", stats->lcl_dram);
2014 fprintf(out, " Load Remote DRAM : %10d\n", stats->rmt_dram);
2015 fprintf(out, " Load MESI State Exclusive : %10d\n", stats->ld_excl);
2016 fprintf(out, " Load MESI State Shared : %10d\n", stats->ld_shared);
2017 fprintf(out, " Load LLC Misses : %10d\n", llc_misses);
2018 fprintf(out, " LLC Misses to Local DRAM : %10.1f%%\n", ((double)stats->lcl_dram/(double)llc_misses) * 100.);
2019 fprintf(out, " LLC Misses to Remote DRAM : %10.1f%%\n", ((double)stats->rmt_dram/(double)llc_misses) * 100.);
2020 fprintf(out, " LLC Misses to Remote cache (HIT) : %10.1f%%\n", ((double)stats->rmt_hit /(double)llc_misses) * 100.);
2021 fprintf(out, " LLC Misses to Remote cache (HITM) : %10.1f%%\n", ((double)stats->rmt_hitm/(double)llc_misses) * 100.);
2022 fprintf(out, " Store Operations : %10d\n", stats->store);
2023 fprintf(out, " Store - uncacheable : %10d\n", stats->st_uncache);
2024 fprintf(out, " Store - no mapping : %10d\n", stats->st_noadrs);
2025 fprintf(out, " Store L1D Hit : %10d\n", stats->st_l1hit);
2026 fprintf(out, " Store L1D Miss : %10d\n", stats->st_l1miss);
2027 fprintf(out, " No Page Map Rejects : %10d\n", stats->nomap);
2028 fprintf(out, " Unable to parse data source : %10d\n", stats->noparse);
2029 }
2030
2031 static void print_shared_cacheline_info(FILE *out)
2032 {
2033 struct c2c_stats *stats = &c2c.hitm_stats;
2034 int hitm_cnt = stats->lcl_hitm + stats->rmt_hitm;
2035
2036 fprintf(out, "=================================================\n");
2037 fprintf(out, " Global Shared Cache Line Event Information \n");
2038 fprintf(out, "=================================================\n");
2039 fprintf(out, " Total Shared Cache Lines : %10d\n", c2c.shared_clines);
2040 fprintf(out, " Load HITs on shared lines : %10d\n", stats->load);
2041 fprintf(out, " Fill Buffer Hits on shared lines : %10d\n", stats->ld_fbhit);
2042 fprintf(out, " L1D hits on shared lines : %10d\n", stats->ld_l1hit);
2043 fprintf(out, " L2D hits on shared lines : %10d\n", stats->ld_l2hit);
2044 fprintf(out, " LLC hits on shared lines : %10d\n", stats->ld_llchit + stats->lcl_hitm);
2045 fprintf(out, " Locked Access on shared lines : %10d\n", stats->locks);
2046 fprintf(out, " Store HITs on shared lines : %10d\n", stats->store);
2047 fprintf(out, " Store L1D hits on shared lines : %10d\n", stats->st_l1hit);
2048 fprintf(out, " Total Merged records : %10d\n", hitm_cnt + stats->store);
2049 }
2050
2051 static void print_cacheline(struct c2c_hists *c2c_hists,
2052 struct hist_entry *he_cl,
2053 struct perf_hpp_list *hpp_list,
2054 FILE *out)
2055 {
2056 char bf[1000];
2057 struct perf_hpp hpp = {
2058 .buf = bf,
2059 .size = 1000,
2060 };
2061 static bool once;
2062
2063 if (!once) {
2064 hists__fprintf_headers(&c2c_hists->hists, out);
2065 once = true;
2066 } else {
2067 fprintf(out, "\n");
2068 }
2069
2070 fprintf(out, " -------------------------------------------------------------\n");
2071 __hist_entry__snprintf(he_cl, &hpp, hpp_list);
2072 fprintf(out, "%s\n", bf);
2073 fprintf(out, " -------------------------------------------------------------\n");
2074
2075 hists__fprintf(&c2c_hists->hists, false, 0, 0, 0, out, true);
2076 }
2077
2078 static void print_pareto(FILE *out)
2079 {
2080 struct perf_hpp_list hpp_list;
2081 struct rb_node *nd;
2082 int ret;
2083
2084 perf_hpp_list__init(&hpp_list);
2085 ret = hpp_list__parse(&hpp_list,
2086 "cl_num,"
2087 "cl_rmt_hitm,"
2088 "cl_lcl_hitm,"
2089 "cl_stores_l1hit,"
2090 "cl_stores_l1miss,"
2091 "dcacheline",
2092 NULL);
2093
2094 if (WARN_ONCE(ret, "failed to setup sort entries\n"))
2095 return;
2096
2097 nd = rb_first(&c2c.hists.hists.entries);
2098
2099 for (; nd; nd = rb_next(nd)) {
2100 struct hist_entry *he = rb_entry(nd, struct hist_entry, rb_node);
2101 struct c2c_hist_entry *c2c_he;
2102
2103 if (he->filtered)
2104 continue;
2105
2106 c2c_he = container_of(he, struct c2c_hist_entry, he);
2107 print_cacheline(c2c_he->hists, he, &hpp_list, out);
2108 }
2109 }
2110
2111 static void print_c2c_info(FILE *out, struct perf_session *session)
2112 {
2113 struct perf_evlist *evlist = session->evlist;
2114 struct perf_evsel *evsel;
2115 bool first = true;
2116
2117 fprintf(out, "=================================================\n");
2118 fprintf(out, " c2c details \n");
2119 fprintf(out, "=================================================\n");
2120
2121 evlist__for_each_entry(evlist, evsel) {
2122 fprintf(out, "%-36s: %s\n", first ? " Events" : "",
2123 perf_evsel__name(evsel));
2124 first = false;
2125 }
2126 fprintf(out, " Cachelines sort on : %s HITMs\n",
2127 display_str[c2c.display]);
2128 fprintf(out, " Cacheline data grouping : %s\n", c2c.cl_sort);
2129 }
2130
2131 static void perf_c2c__hists_fprintf(FILE *out, struct perf_session *session)
2132 {
2133 setup_pager();
2134
2135 print_c2c__display_stats(out);
2136 fprintf(out, "\n");
2137 print_shared_cacheline_info(out);
2138 fprintf(out, "\n");
2139 print_c2c_info(out, session);
2140
2141 if (c2c.stats_only)
2142 return;
2143
2144 fprintf(out, "\n");
2145 fprintf(out, "=================================================\n");
2146 fprintf(out, " Shared Data Cache Line Table \n");
2147 fprintf(out, "=================================================\n");
2148 fprintf(out, "#\n");
2149
2150 hists__fprintf(&c2c.hists.hists, true, 0, 0, 0, stdout, false);
2151
2152 fprintf(out, "\n");
2153 fprintf(out, "=================================================\n");
2154 fprintf(out, " Shared Cache Line Distribution Pareto \n");
2155 fprintf(out, "=================================================\n");
2156 fprintf(out, "#\n");
2157
2158 print_pareto(out);
2159 }
2160
2161 #ifdef HAVE_SLANG_SUPPORT
2162 static void c2c_browser__update_nr_entries(struct hist_browser *hb)
2163 {
2164 u64 nr_entries = 0;
2165 struct rb_node *nd = rb_first(&hb->hists->entries);
2166
2167 while (nd) {
2168 struct hist_entry *he = rb_entry(nd, struct hist_entry, rb_node);
2169
2170 if (!he->filtered)
2171 nr_entries++;
2172
2173 nd = rb_next(nd);
2174 }
2175
2176 hb->nr_non_filtered_entries = nr_entries;
2177 }
2178
2179 struct c2c_cacheline_browser {
2180 struct hist_browser hb;
2181 struct hist_entry *he;
2182 };
2183
2184 static int
2185 perf_c2c_cacheline_browser__title(struct hist_browser *browser,
2186 char *bf, size_t size)
2187 {
2188 struct c2c_cacheline_browser *cl_browser;
2189 struct hist_entry *he;
2190 uint64_t addr = 0;
2191
2192 cl_browser = container_of(browser, struct c2c_cacheline_browser, hb);
2193 he = cl_browser->he;
2194
2195 if (he->mem_info)
2196 addr = cl_address(he->mem_info->daddr.addr);
2197
2198 scnprintf(bf, size, "Cacheline 0x%lx", addr);
2199 return 0;
2200 }
2201
2202 static struct c2c_cacheline_browser*
2203 c2c_cacheline_browser__new(struct hists *hists, struct hist_entry *he)
2204 {
2205 struct c2c_cacheline_browser *browser;
2206
2207 browser = zalloc(sizeof(*browser));
2208 if (browser) {
2209 hist_browser__init(&browser->hb, hists);
2210 browser->hb.c2c_filter = true;
2211 browser->hb.title = perf_c2c_cacheline_browser__title;
2212 browser->he = he;
2213 }
2214
2215 return browser;
2216 }
2217
2218 static int perf_c2c__browse_cacheline(struct hist_entry *he)
2219 {
2220 struct c2c_hist_entry *c2c_he;
2221 struct c2c_hists *c2c_hists;
2222 struct c2c_cacheline_browser *cl_browser;
2223 struct hist_browser *browser;
2224 int key = -1;
2225 const char help[] =
2226 " ENTER Togle callchains (if present) \n"
2227 " n Togle Node details info \n"
2228 " s Togle full lenght of symbol and source line columns \n"
2229 " q Return back to cacheline list \n";
2230
2231 /* Display compact version first. */
2232 c2c.symbol_full = false;
2233
2234 c2c_he = container_of(he, struct c2c_hist_entry, he);
2235 c2c_hists = c2c_he->hists;
2236
2237 cl_browser = c2c_cacheline_browser__new(&c2c_hists->hists, he);
2238 if (cl_browser == NULL)
2239 return -1;
2240
2241 browser = &cl_browser->hb;
2242
2243 /* reset abort key so that it can get Ctrl-C as a key */
2244 SLang_reset_tty();
2245 SLang_init_tty(0, 0, 0);
2246
2247 c2c_browser__update_nr_entries(browser);
2248
2249 while (1) {
2250 key = hist_browser__run(browser, "? - help");
2251
2252 switch (key) {
2253 case 's':
2254 c2c.symbol_full = !c2c.symbol_full;
2255 break;
2256 case 'n':
2257 c2c.node_info = (c2c.node_info + 1) % 3;
2258 setup_nodes_header();
2259 break;
2260 case 'q':
2261 goto out;
2262 case '?':
2263 ui_browser__help_window(&browser->b, help);
2264 break;
2265 default:
2266 break;
2267 }
2268 }
2269
2270 out:
2271 free(cl_browser);
2272 return 0;
2273 }
2274
2275 static int perf_c2c_browser__title(struct hist_browser *browser,
2276 char *bf, size_t size)
2277 {
2278 scnprintf(bf, size,
2279 "Shared Data Cache Line Table "
2280 "(%lu entries, sorted on %s HITMs)",
2281 browser->nr_non_filtered_entries,
2282 display_str[c2c.display]);
2283 return 0;
2284 }
2285
2286 static struct hist_browser*
2287 perf_c2c_browser__new(struct hists *hists)
2288 {
2289 struct hist_browser *browser = hist_browser__new(hists);
2290
2291 if (browser) {
2292 browser->title = perf_c2c_browser__title;
2293 browser->c2c_filter = true;
2294 }
2295
2296 return browser;
2297 }
2298
2299 static int perf_c2c__hists_browse(struct hists *hists)
2300 {
2301 struct hist_browser *browser;
2302 int key = -1;
2303 const char help[] =
2304 " d Display cacheline details \n"
2305 " ENTER Togle callchains (if present) \n"
2306 " q Quit \n";
2307
2308 browser = perf_c2c_browser__new(hists);
2309 if (browser == NULL)
2310 return -1;
2311
2312 /* reset abort key so that it can get Ctrl-C as a key */
2313 SLang_reset_tty();
2314 SLang_init_tty(0, 0, 0);
2315
2316 c2c_browser__update_nr_entries(browser);
2317
2318 while (1) {
2319 key = hist_browser__run(browser, "? - help");
2320
2321 switch (key) {
2322 case 'q':
2323 goto out;
2324 case 'd':
2325 perf_c2c__browse_cacheline(browser->he_selection);
2326 break;
2327 case '?':
2328 ui_browser__help_window(&browser->b, help);
2329 break;
2330 default:
2331 break;
2332 }
2333 }
2334
2335 out:
2336 hist_browser__delete(browser);
2337 return 0;
2338 }
2339
2340 static void perf_c2c_display(struct perf_session *session)
2341 {
2342 if (use_browser == 0)
2343 perf_c2c__hists_fprintf(stdout, session);
2344 else
2345 perf_c2c__hists_browse(&c2c.hists.hists);
2346 }
2347 #else
2348 static void perf_c2c_display(struct perf_session *session)
2349 {
2350 use_browser = 0;
2351 perf_c2c__hists_fprintf(stdout, session);
2352 }
2353 #endif /* HAVE_SLANG_SUPPORT */
2354
2355 static void ui_quirks(void)
2356 {
2357 if (!c2c.use_stdio) {
2358 dim_offset.width = 5;
2359 dim_offset.header = header_offset_tui;
2360 }
2361
2362 dim_percent_hitm.header = percent_hitm_header[c2c.display];
2363 }
2364
2365 #define CALLCHAIN_DEFAULT_OPT "graph,0.5,caller,function,percent"
2366
2367 const char callchain_help[] = "Display call graph (stack chain/backtrace):\n\n"
2368 CALLCHAIN_REPORT_HELP
2369 "\n\t\t\t\tDefault: " CALLCHAIN_DEFAULT_OPT;
2370
2371 static int
2372 parse_callchain_opt(const struct option *opt, const char *arg, int unset)
2373 {
2374 struct callchain_param *callchain = opt->value;
2375
2376 callchain->enabled = !unset;
2377 /*
2378 * --no-call-graph
2379 */
2380 if (unset) {
2381 symbol_conf.use_callchain = false;
2382 callchain->mode = CHAIN_NONE;
2383 return 0;
2384 }
2385
2386 return parse_callchain_report_opt(arg);
2387 }
2388
2389 static int setup_callchain(struct perf_evlist *evlist)
2390 {
2391 u64 sample_type = perf_evlist__combined_sample_type(evlist);
2392 enum perf_call_graph_mode mode = CALLCHAIN_NONE;
2393
2394 if ((sample_type & PERF_SAMPLE_REGS_USER) &&
2395 (sample_type & PERF_SAMPLE_STACK_USER))
2396 mode = CALLCHAIN_DWARF;
2397 else if (sample_type & PERF_SAMPLE_BRANCH_STACK)
2398 mode = CALLCHAIN_LBR;
2399 else if (sample_type & PERF_SAMPLE_CALLCHAIN)
2400 mode = CALLCHAIN_FP;
2401
2402 if (!callchain_param.enabled &&
2403 callchain_param.mode != CHAIN_NONE &&
2404 mode != CALLCHAIN_NONE) {
2405 symbol_conf.use_callchain = true;
2406 if (callchain_register_param(&callchain_param) < 0) {
2407 ui__error("Can't register callchain params.\n");
2408 return -EINVAL;
2409 }
2410 }
2411
2412 callchain_param.record_mode = mode;
2413 callchain_param.min_percent = 0;
2414 return 0;
2415 }
2416
2417 static int setup_display(const char *str)
2418 {
2419 const char *display = str ?: "tot";
2420
2421 if (!strcmp(display, "tot"))
2422 c2c.display = DISPLAY_TOT;
2423 else if (!strcmp(display, "rmt"))
2424 c2c.display = DISPLAY_RMT;
2425 else if (!strcmp(display, "lcl"))
2426 c2c.display = DISPLAY_LCL;
2427 else {
2428 pr_err("failed: unknown display type: %s\n", str);
2429 return -1;
2430 }
2431
2432 return 0;
2433 }
2434
2435 #define for_each_token(__tok, __buf, __sep, __tmp) \
2436 for (__tok = strtok_r(__buf, __sep, &__tmp); __tok; \
2437 __tok = strtok_r(NULL, __sep, &__tmp))
2438
2439 static int build_cl_output(char *cl_sort, bool no_source)
2440 {
2441 char *tok, *tmp, *buf = strdup(cl_sort);
2442 bool add_pid = false;
2443 bool add_tid = false;
2444 bool add_iaddr = false;
2445 bool add_sym = false;
2446 bool add_dso = false;
2447 bool add_src = false;
2448
2449 if (!buf)
2450 return -ENOMEM;
2451
2452 for_each_token(tok, buf, ",", tmp) {
2453 if (!strcmp(tok, "tid")) {
2454 add_tid = true;
2455 } else if (!strcmp(tok, "pid")) {
2456 add_pid = true;
2457 } else if (!strcmp(tok, "iaddr")) {
2458 add_iaddr = true;
2459 add_sym = true;
2460 add_dso = true;
2461 add_src = no_source ? false : true;
2462 } else if (!strcmp(tok, "dso")) {
2463 add_dso = true;
2464 } else if (strcmp(tok, "offset")) {
2465 pr_err("unrecognized sort token: %s\n", tok);
2466 return -EINVAL;
2467 }
2468 }
2469
2470 if (asprintf(&c2c.cl_output,
2471 "%s%s%s%s%s%s%s%s%s%s",
2472 c2c.use_stdio ? "cl_num_empty," : "",
2473 "percent_rmt_hitm,"
2474 "percent_lcl_hitm,"
2475 "percent_stores_l1hit,"
2476 "percent_stores_l1miss,"
2477 "offset,",
2478 add_pid ? "pid," : "",
2479 add_tid ? "tid," : "",
2480 add_iaddr ? "iaddr," : "",
2481 "mean_rmt,"
2482 "mean_lcl,"
2483 "mean_load,"
2484 "tot_recs,"
2485 "cpucnt,",
2486 add_sym ? "symbol," : "",
2487 add_dso ? "dso," : "",
2488 add_src ? "cl_srcline," : "",
2489 "node") < 0)
2490 return -ENOMEM;
2491
2492 c2c.show_src = add_src;
2493
2494 free(buf);
2495 return 0;
2496 }
2497
2498 static int setup_coalesce(const char *coalesce, bool no_source)
2499 {
2500 const char *c = coalesce ?: coalesce_default;
2501
2502 if (asprintf(&c2c.cl_sort, "offset,%s", c) < 0)
2503 return -ENOMEM;
2504
2505 if (build_cl_output(c2c.cl_sort, no_source))
2506 return -1;
2507
2508 if (asprintf(&c2c.cl_resort, "offset,%s",
2509 c2c.display == DISPLAY_TOT ?
2510 "tot_hitm" :
2511 c2c.display == DISPLAY_RMT ?
2512 "rmt_hitm,lcl_hitm" :
2513 "lcl_hitm,rmt_hitm") < 0)
2514 return -ENOMEM;
2515
2516 pr_debug("coalesce sort fields: %s\n", c2c.cl_sort);
2517 pr_debug("coalesce resort fields: %s\n", c2c.cl_resort);
2518 pr_debug("coalesce output fields: %s\n", c2c.cl_output);
2519 return 0;
2520 }
2521
2522 static int perf_c2c__report(int argc, const char **argv)
2523 {
2524 struct perf_session *session;
2525 struct ui_progress prog;
2526 struct perf_data_file file = {
2527 .mode = PERF_DATA_MODE_READ,
2528 };
2529 char callchain_default_opt[] = CALLCHAIN_DEFAULT_OPT;
2530 const char *display = NULL;
2531 const char *coalesce = NULL;
2532 bool no_source = false;
2533 const struct option options[] = {
2534 OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
2535 "file", "vmlinux pathname"),
2536 OPT_STRING('i', "input", &input_name, "file",
2537 "the input file to process"),
2538 OPT_INCR('N', "node-info", &c2c.node_info,
2539 "show extra node info in report (repeat for more info)"),
2540 #ifdef HAVE_SLANG_SUPPORT
2541 OPT_BOOLEAN(0, "stdio", &c2c.use_stdio, "Use the stdio interface"),
2542 #endif
2543 OPT_BOOLEAN(0, "stats", &c2c.stats_only,
2544 "Display only statistic tables (implies --stdio)"),
2545 OPT_BOOLEAN(0, "full-symbols", &c2c.symbol_full,
2546 "Display full length of symbols"),
2547 OPT_BOOLEAN(0, "no-source", &no_source,
2548 "Do not display Source Line column"),
2549 OPT_BOOLEAN(0, "show-all", &c2c.show_all,
2550 "Show all captured HITM lines."),
2551 OPT_CALLBACK_DEFAULT('g', "call-graph", &callchain_param,
2552 "print_type,threshold[,print_limit],order,sort_key[,branch],value",
2553 callchain_help, &parse_callchain_opt,
2554 callchain_default_opt),
2555 OPT_STRING('d', "display", &display, "Switch HITM output type", "lcl,rmt"),
2556 OPT_STRING('c', "coalesce", &coalesce, "coalesce fields",
2557 "coalesce fields: pid,tid,iaddr,dso"),
2558 OPT_BOOLEAN('f', "force", &symbol_conf.force, "don't complain, do it"),
2559 OPT_PARENT(c2c_options),
2560 OPT_END()
2561 };
2562 int err = 0;
2563
2564 argc = parse_options(argc, argv, options, report_c2c_usage,
2565 PARSE_OPT_STOP_AT_NON_OPTION);
2566 if (argc)
2567 usage_with_options(report_c2c_usage, options);
2568
2569 if (c2c.stats_only)
2570 c2c.use_stdio = true;
2571
2572 if (!input_name || !strlen(input_name))
2573 input_name = "perf.data";
2574
2575 file.path = input_name;
2576 file.force = symbol_conf.force;
2577
2578 err = setup_display(display);
2579 if (err)
2580 goto out;
2581
2582 err = setup_coalesce(coalesce, no_source);
2583 if (err) {
2584 pr_debug("Failed to initialize hists\n");
2585 goto out;
2586 }
2587
2588 err = c2c_hists__init(&c2c.hists, "dcacheline", 2);
2589 if (err) {
2590 pr_debug("Failed to initialize hists\n");
2591 goto out;
2592 }
2593
2594 session = perf_session__new(&file, 0, &c2c.tool);
2595 if (session == NULL) {
2596 pr_debug("No memory for session\n");
2597 goto out;
2598 }
2599
2600 err = setup_nodes(session);
2601 if (err) {
2602 pr_err("Failed setup nodes\n");
2603 goto out;
2604 }
2605
2606 err = setup_callchain(session->evlist);
2607 if (err)
2608 goto out_session;
2609
2610 if (symbol__init(&session->header.env) < 0)
2611 goto out_session;
2612
2613 /* No pipe support at the moment. */
2614 if (perf_data_file__is_pipe(session->file)) {
2615 pr_debug("No pipe support at the moment.\n");
2616 goto out_session;
2617 }
2618
2619 if (c2c.use_stdio)
2620 use_browser = 0;
2621 else
2622 use_browser = 1;
2623
2624 setup_browser(false);
2625
2626 err = perf_session__process_events(session);
2627 if (err) {
2628 pr_err("failed to process sample\n");
2629 goto out_session;
2630 }
2631
2632 c2c_hists__reinit(&c2c.hists,
2633 "cl_idx,"
2634 "dcacheline,"
2635 "tot_recs,"
2636 "percent_hitm,"
2637 "tot_hitm,lcl_hitm,rmt_hitm,"
2638 "stores,stores_l1hit,stores_l1miss,"
2639 "dram_lcl,dram_rmt,"
2640 "ld_llcmiss,"
2641 "tot_loads,"
2642 "ld_fbhit,ld_l1hit,ld_l2hit,"
2643 "ld_lclhit,ld_rmthit",
2644 c2c.display == DISPLAY_TOT ? "tot_hitm" :
2645 c2c.display == DISPLAY_LCL ? "lcl_hitm" : "rmt_hitm"
2646 );
2647
2648 ui_progress__init(&prog, c2c.hists.hists.nr_entries, "Sorting...");
2649
2650 hists__collapse_resort(&c2c.hists.hists, NULL);
2651 hists__output_resort_cb(&c2c.hists.hists, &prog, resort_hitm_cb);
2652 hists__iterate_cb(&c2c.hists.hists, resort_cl_cb);
2653
2654 ui_progress__finish();
2655
2656 ui_quirks();
2657
2658 perf_c2c_display(session);
2659
2660 out_session:
2661 perf_session__delete(session);
2662 out:
2663 return err;
2664 }
2665
2666 static int parse_record_events(const struct option *opt,
2667 const char *str, int unset __maybe_unused)
2668 {
2669 bool *event_set = (bool *) opt->value;
2670
2671 *event_set = true;
2672 return perf_mem_events__parse(str);
2673 }
2674
2675
2676 static const char * const __usage_record[] = {
2677 "perf c2c record [<options>] [<command>]",
2678 "perf c2c record [<options>] -- <command> [<options>]",
2679 NULL
2680 };
2681
2682 static const char * const *record_mem_usage = __usage_record;
2683
2684 static int perf_c2c__record(int argc, const char **argv)
2685 {
2686 int rec_argc, i = 0, j;
2687 const char **rec_argv;
2688 int ret;
2689 bool all_user = false, all_kernel = false;
2690 bool event_set = false;
2691 struct option options[] = {
2692 OPT_CALLBACK('e', "event", &event_set, "event",
2693 "event selector. Use 'perf mem record -e list' to list available events",
2694 parse_record_events),
2695 OPT_BOOLEAN('u', "all-user", &all_user, "collect only user level data"),
2696 OPT_BOOLEAN('k', "all-kernel", &all_kernel, "collect only kernel level data"),
2697 OPT_UINTEGER('l', "ldlat", &perf_mem_events__loads_ldlat, "setup mem-loads latency"),
2698 OPT_PARENT(c2c_options),
2699 OPT_END()
2700 };
2701
2702 if (perf_mem_events__init()) {
2703 pr_err("failed: memory events not supported\n");
2704 return -1;
2705 }
2706
2707 argc = parse_options(argc, argv, options, record_mem_usage,
2708 PARSE_OPT_KEEP_UNKNOWN);
2709
2710 rec_argc = argc + 10; /* max number of arguments */
2711 rec_argv = calloc(rec_argc + 1, sizeof(char *));
2712 if (!rec_argv)
2713 return -1;
2714
2715 rec_argv[i++] = "record";
2716
2717 if (!event_set) {
2718 perf_mem_events[PERF_MEM_EVENTS__LOAD].record = true;
2719 perf_mem_events[PERF_MEM_EVENTS__STORE].record = true;
2720 }
2721
2722 if (perf_mem_events[PERF_MEM_EVENTS__LOAD].record)
2723 rec_argv[i++] = "-W";
2724
2725 rec_argv[i++] = "-d";
2726 rec_argv[i++] = "--sample-cpu";
2727
2728 for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) {
2729 if (!perf_mem_events[j].record)
2730 continue;
2731
2732 if (!perf_mem_events[j].supported) {
2733 pr_err("failed: event '%s' not supported\n",
2734 perf_mem_events[j].name);
2735 return -1;
2736 }
2737
2738 rec_argv[i++] = "-e";
2739 rec_argv[i++] = perf_mem_events__name(j);
2740 };
2741
2742 if (all_user)
2743 rec_argv[i++] = "--all-user";
2744
2745 if (all_kernel)
2746 rec_argv[i++] = "--all-kernel";
2747
2748 for (j = 0; j < argc; j++, i++)
2749 rec_argv[i] = argv[j];
2750
2751 if (verbose > 0) {
2752 pr_debug("calling: ");
2753
2754 j = 0;
2755
2756 while (rec_argv[j]) {
2757 pr_debug("%s ", rec_argv[j]);
2758 j++;
2759 }
2760 pr_debug("\n");
2761 }
2762
2763 ret = cmd_record(i, rec_argv);
2764 free(rec_argv);
2765 return ret;
2766 }
2767
2768 int cmd_c2c(int argc, const char **argv)
2769 {
2770 argc = parse_options(argc, argv, c2c_options, c2c_usage,
2771 PARSE_OPT_STOP_AT_NON_OPTION);
2772
2773 if (!argc)
2774 usage_with_options(c2c_usage, c2c_options);
2775
2776 if (!strncmp(argv[0], "rec", 3)) {
2777 return perf_c2c__record(argc, argv);
2778 } else if (!strncmp(argv[0], "rep", 3)) {
2779 return perf_c2c__report(argc, argv);
2780 } else {
2781 usage_with_options(c2c_usage, c2c_options);
2782 }
2783
2784 return 0;
2785 }
CRIS linux kernel tree