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rcu: Make non-preemptive schedule be Tasks RCU quiescent state
[linux/fpc-iii.git] / tools / perf / builtin-c2c.c
blobe2b21723bbf8acddac596ebf519ba5b7f82c84b3
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 <linux/compiler.h>
13 #include <linux/kernel.h>
14 #include <linux/stringify.h>
15 #include <asm/bug.h>
16 #include "util.h"
17 #include "debug.h"
18 #include "builtin.h"
19 #include <subcmd/parse-options.h>
20 #include "mem-events.h"
21 #include "session.h"
22 #include "hist.h"
23 #include "sort.h"
24 #include "tool.h"
25 #include "data.h"
26 #include "sort.h"
27 #include "evlist.h"
28 #include "evsel.h"
29 #include <asm/bug.h>
30 #include "ui/browsers/hists.h"
31 #include "evlist.h"
32
33 struct c2c_hists {
34 struct hists hists;
35 struct perf_hpp_list list;
36 struct c2c_stats stats;
37 };
38
39 struct compute_stats {
40 struct stats lcl_hitm;
41 struct stats rmt_hitm;
42 struct stats load;
43 };
44
45 struct c2c_hist_entry {
46 struct c2c_hists *hists;
47 struct c2c_stats stats;
48 unsigned long *cpuset;
49 struct c2c_stats *node_stats;
50 unsigned int cacheline_idx;
51
52 struct compute_stats cstats;
53
54 /*
55 * must be at the end,
56 * because of its callchain dynamic entry
57 */
58 struct hist_entry he;
59 };
60
61 static char const *coalesce_default = "pid,iaddr";
62
63 struct perf_c2c {
64 struct perf_tool tool;
65 struct c2c_hists hists;
66
67 unsigned long **nodes;
68 int nodes_cnt;
69 int cpus_cnt;
70 int *cpu2node;
71 int node_info;
72
73 bool show_src;
74 bool show_all;
75 bool use_stdio;
76 bool stats_only;
77 bool symbol_full;
78
79 /* HITM shared clines stats */
80 struct c2c_stats hitm_stats;
81 int shared_clines;
82
83 int display;
84
85 const char *coalesce;
86 char *cl_sort;
87 char *cl_resort;
88 char *cl_output;
89 };
90
91 enum {
92 DISPLAY_LCL,
93 DISPLAY_RMT,
94 DISPLAY_TOT,
95 DISPLAY_MAX,
96 };
97
98 static const char *display_str[DISPLAY_MAX] = {
99 [DISPLAY_LCL] = "Local",
100 [DISPLAY_RMT] = "Remote",
101 [DISPLAY_TOT] = "Total",
102 };
103
104 static const struct option c2c_options[] = {
105 OPT_INCR('v', "verbose", &verbose, "be more verbose (show counter open errors, etc)"),
106 OPT_END()
107 };
108
109 static struct perf_c2c c2c;
110
111 static void *c2c_he_zalloc(size_t size)
112 {
113 struct c2c_hist_entry *c2c_he;
114
115 c2c_he = zalloc(size + sizeof(*c2c_he));
116 if (!c2c_he)
117 return NULL;
118
119 c2c_he->cpuset = bitmap_alloc(c2c.cpus_cnt);
120 if (!c2c_he->cpuset)
121 return NULL;
122
123 c2c_he->node_stats = zalloc(c2c.nodes_cnt * sizeof(*c2c_he->node_stats));
124 if (!c2c_he->node_stats)
125 return NULL;
126
127 init_stats(&c2c_he->cstats.lcl_hitm);
128 init_stats(&c2c_he->cstats.rmt_hitm);
129 init_stats(&c2c_he->cstats.load);
130
131 return &c2c_he->he;
132 }
133
134 static void c2c_he_free(void *he)
135 {
136 struct c2c_hist_entry *c2c_he;
137
138 c2c_he = container_of(he, struct c2c_hist_entry, he);
139 if (c2c_he->hists) {
140 hists__delete_entries(&c2c_he->hists->hists);
141 free(c2c_he->hists);
142 }
143
144 free(c2c_he->cpuset);
145 free(c2c_he->node_stats);
146 free(c2c_he);
147 }
148
149 static struct hist_entry_ops c2c_entry_ops = {
150 .new = c2c_he_zalloc,
151 .free = c2c_he_free,
152 };
153
154 static int c2c_hists__init(struct c2c_hists *hists,
155 const char *sort,
156 int nr_header_lines);
157
158 static struct c2c_hists*
159 he__get_c2c_hists(struct hist_entry *he,
160 const char *sort,
161 int nr_header_lines)
162 {
163 struct c2c_hist_entry *c2c_he;
164 struct c2c_hists *hists;
165 int ret;
166
167 c2c_he = container_of(he, struct c2c_hist_entry, he);
168 if (c2c_he->hists)
169 return c2c_he->hists;
170
171 hists = c2c_he->hists = zalloc(sizeof(*hists));
172 if (!hists)
173 return NULL;
174
175 ret = c2c_hists__init(hists, sort, nr_header_lines);
176 if (ret) {
177 free(hists);
178 return NULL;
179 }
180
181 return hists;
182 }
183
184 static void c2c_he__set_cpu(struct c2c_hist_entry *c2c_he,
185 struct perf_sample *sample)
186 {
187 if (WARN_ONCE(sample->cpu == (unsigned int) -1,
188 "WARNING: no sample cpu value"))
189 return;
190
191 set_bit(sample->cpu, c2c_he->cpuset);
192 }
193
194 static void compute_stats(struct c2c_hist_entry *c2c_he,
195 struct c2c_stats *stats,
196 u64 weight)
197 {
198 struct compute_stats *cstats = &c2c_he->cstats;
199
200 if (stats->rmt_hitm)
201 update_stats(&cstats->rmt_hitm, weight);
202 else if (stats->lcl_hitm)
203 update_stats(&cstats->lcl_hitm, weight);
204 else if (stats->load)
205 update_stats(&cstats->load, weight);
206 }
207
208 static int process_sample_event(struct perf_tool *tool __maybe_unused,
209 union perf_event *event,
210 struct perf_sample *sample,
211 struct perf_evsel *evsel,
212 struct machine *machine)
213 {
214 struct c2c_hists *c2c_hists = &c2c.hists;
215 struct c2c_hist_entry *c2c_he;
216 struct c2c_stats stats = { .nr_entries = 0, };
217 struct hist_entry *he;
218 struct addr_location al;
219 struct mem_info *mi, *mi_dup;
220 int ret;
221
222 if (machine__resolve(machine, &al, sample) < 0) {
223 pr_debug("problem processing %d event, skipping it.\n",
224 event->header.type);
225 return -1;
226 }
227
228 ret = sample__resolve_callchain(sample, &callchain_cursor, NULL,
229 evsel, &al, sysctl_perf_event_max_stack);
230 if (ret)
231 goto out;
232
233 mi = sample__resolve_mem(sample, &al);
234 if (mi == NULL)
235 return -ENOMEM;
236
237 mi_dup = memdup(mi, sizeof(*mi));
238 if (!mi_dup)
239 goto free_mi;
240
241 c2c_decode_stats(&stats, mi);
242
243 he = hists__add_entry_ops(&c2c_hists->hists, &c2c_entry_ops,
244 &al, NULL, NULL, mi,
245 sample, true);
246 if (he == NULL)
247 goto free_mi_dup;
248
249 c2c_he = container_of(he, struct c2c_hist_entry, he);
250 c2c_add_stats(&c2c_he->stats, &stats);
251 c2c_add_stats(&c2c_hists->stats, &stats);
252
253 c2c_he__set_cpu(c2c_he, sample);
254
255 hists__inc_nr_samples(&c2c_hists->hists, he->filtered);
256 ret = hist_entry__append_callchain(he, sample);
257
258 if (!ret) {
259 /*
260 * There's already been warning about missing
261 * sample's cpu value. Let's account all to
262 * node 0 in this case, without any further
263 * warning.
264 *
265 * Doing node stats only for single callchain data.
266 */
267 int cpu = sample->cpu == (unsigned int) -1 ? 0 : sample->cpu;
268 int node = c2c.cpu2node[cpu];
269
270 mi = mi_dup;
271
272 mi_dup = memdup(mi, sizeof(*mi));
273 if (!mi_dup)
274 goto free_mi;
275
276 c2c_hists = he__get_c2c_hists(he, c2c.cl_sort, 2);
277 if (!c2c_hists)
278 goto free_mi_dup;
279
280 he = hists__add_entry_ops(&c2c_hists->hists, &c2c_entry_ops,
281 &al, NULL, NULL, mi,
282 sample, true);
283 if (he == NULL)
284 goto free_mi_dup;
285
286 c2c_he = container_of(he, struct c2c_hist_entry, he);
287 c2c_add_stats(&c2c_he->stats, &stats);
288 c2c_add_stats(&c2c_hists->stats, &stats);
289 c2c_add_stats(&c2c_he->node_stats[node], &stats);
290
291 compute_stats(c2c_he, &stats, sample->weight);
292
293 c2c_he__set_cpu(c2c_he, sample);
294
295 hists__inc_nr_samples(&c2c_hists->hists, he->filtered);
296 ret = hist_entry__append_callchain(he, sample);
297 }
298
299 out:
300 addr_location__put(&al);
301 return ret;
302
303 free_mi_dup:
304 free(mi_dup);
305 free_mi:
306 free(mi);
307 ret = -ENOMEM;
308 goto out;
309 }
310
311 static struct perf_c2c c2c = {
312 .tool = {
313 .sample = process_sample_event,
314 .mmap = perf_event__process_mmap,
315 .mmap2 = perf_event__process_mmap2,
316 .comm = perf_event__process_comm,
317 .exit = perf_event__process_exit,
318 .fork = perf_event__process_fork,
319 .lost = perf_event__process_lost,
320 .ordered_events = true,
321 .ordering_requires_timestamps = true,
322 },
323 };
324
325 static const char * const c2c_usage[] = {
326 "perf c2c {record|report}",
327 NULL
328 };
329
330 static const char * const __usage_report[] = {
331 "perf c2c report",
332 NULL
333 };
334
335 static const char * const *report_c2c_usage = __usage_report;
336
337 #define C2C_HEADER_MAX 2
338
339 struct c2c_header {
340 struct {
341 const char *text;
342 int span;
343 } line[C2C_HEADER_MAX];
344 };
345
346 struct c2c_dimension {
347 struct c2c_header header;
348 const char *name;
349 int width;
350 struct sort_entry *se;
351
352 int64_t (*cmp)(struct perf_hpp_fmt *fmt,
353 struct hist_entry *, struct hist_entry *);
354 int (*entry)(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
355 struct hist_entry *he);
356 int (*color)(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
357 struct hist_entry *he);
358 };
359
360 struct c2c_fmt {
361 struct perf_hpp_fmt fmt;
362 struct c2c_dimension *dim;
363 };
364
365 #define SYMBOL_WIDTH 30
366
367 static struct c2c_dimension dim_symbol;
368 static struct c2c_dimension dim_srcline;
369
370 static int symbol_width(struct hists *hists, struct sort_entry *se)
371 {
372 int width = hists__col_len(hists, se->se_width_idx);
373
374 if (!c2c.symbol_full)
375 width = MIN(width, SYMBOL_WIDTH);
376
377 return width;
378 }
379
380 static int c2c_width(struct perf_hpp_fmt *fmt,
381 struct perf_hpp *hpp __maybe_unused,
382 struct hists *hists)
383 {
384 struct c2c_fmt *c2c_fmt;
385 struct c2c_dimension *dim;
386
387 c2c_fmt = container_of(fmt, struct c2c_fmt, fmt);
388 dim = c2c_fmt->dim;
389
390 if (dim == &dim_symbol || dim == &dim_srcline)
391 return symbol_width(hists, dim->se);
392
393 return dim->se ? hists__col_len(hists, dim->se->se_width_idx) :
394 c2c_fmt->dim->width;
395 }
396
397 static int c2c_header(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
398 struct hists *hists, int line, int *span)
399 {
400 struct perf_hpp_list *hpp_list = hists->hpp_list;
401 struct c2c_fmt *c2c_fmt;
402 struct c2c_dimension *dim;
403 const char *text = NULL;
404 int width = c2c_width(fmt, hpp, hists);
405
406 c2c_fmt = container_of(fmt, struct c2c_fmt, fmt);
407 dim = c2c_fmt->dim;
408
409 if (dim->se) {
410 text = dim->header.line[line].text;
411 /* Use the last line from sort_entry if not defined. */
412 if (!text && (line == hpp_list->nr_header_lines - 1))
413 text = dim->se->se_header;
414 } else {
415 text = dim->header.line[line].text;
416
417 if (*span) {
418 (*span)--;
419 return 0;
420 } else {
421 *span = dim->header.line[line].span;
422 }
423 }
424
425 if (text == NULL)
426 text = "";
427
428 return scnprintf(hpp->buf, hpp->size, "%*s", width, text);
429 }
430
431 #define HEX_STR(__s, __v) \
432 ({ \
433 scnprintf(__s, sizeof(__s), "0x%" PRIx64, __v); \
434 __s; \
435 })
436
437 static int64_t
438 dcacheline_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
439 struct hist_entry *left, struct hist_entry *right)
440 {
441 return sort__dcacheline_cmp(left, right);
442 }
443
444 static int dcacheline_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
445 struct hist_entry *he)
446 {
447 uint64_t addr = 0;
448 int width = c2c_width(fmt, hpp, he->hists);
449 char buf[20];
450
451 if (he->mem_info)
452 addr = cl_address(he->mem_info->daddr.addr);
453
454 return scnprintf(hpp->buf, hpp->size, "%*s", width, HEX_STR(buf, addr));
455 }
456
457 static int offset_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
458 struct hist_entry *he)
459 {
460 uint64_t addr = 0;
461 int width = c2c_width(fmt, hpp, he->hists);
462 char buf[20];
463
464 if (he->mem_info)
465 addr = cl_offset(he->mem_info->daddr.al_addr);
466
467 return scnprintf(hpp->buf, hpp->size, "%*s", width, HEX_STR(buf, addr));
468 }
469
470 static int64_t
471 offset_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
472 struct hist_entry *left, struct hist_entry *right)
473 {
474 uint64_t l = 0, r = 0;
475
476 if (left->mem_info)
477 l = cl_offset(left->mem_info->daddr.addr);
478 if (right->mem_info)
479 r = cl_offset(right->mem_info->daddr.addr);
480
481 return (int64_t)(r - l);
482 }
483
484 static int
485 iaddr_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
486 struct hist_entry *he)
487 {
488 uint64_t addr = 0;
489 int width = c2c_width(fmt, hpp, he->hists);
490 char buf[20];
491
492 if (he->mem_info)
493 addr = he->mem_info->iaddr.addr;
494
495 return scnprintf(hpp->buf, hpp->size, "%*s", width, HEX_STR(buf, addr));
496 }
497
498 static int64_t
499 iaddr_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
500 struct hist_entry *left, struct hist_entry *right)
501 {
502 return sort__iaddr_cmp(left, right);
503 }
504
505 static int
506 tot_hitm_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
507 struct hist_entry *he)
508 {
509 struct c2c_hist_entry *c2c_he;
510 int width = c2c_width(fmt, hpp, he->hists);
511 unsigned int tot_hitm;
512
513 c2c_he = container_of(he, struct c2c_hist_entry, he);
514 tot_hitm = c2c_he->stats.lcl_hitm + c2c_he->stats.rmt_hitm;
515
516 return scnprintf(hpp->buf, hpp->size, "%*u", width, tot_hitm);
517 }
518
519 static int64_t
520 tot_hitm_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
521 struct hist_entry *left, struct hist_entry *right)
522 {
523 struct c2c_hist_entry *c2c_left;
524 struct c2c_hist_entry *c2c_right;
525 unsigned int tot_hitm_left;
526 unsigned int tot_hitm_right;
527
528 c2c_left = container_of(left, struct c2c_hist_entry, he);
529 c2c_right = container_of(right, struct c2c_hist_entry, he);
530
531 tot_hitm_left = c2c_left->stats.lcl_hitm + c2c_left->stats.rmt_hitm;
532 tot_hitm_right = c2c_right->stats.lcl_hitm + c2c_right->stats.rmt_hitm;
533
534 return tot_hitm_left - tot_hitm_right;
535 }
536
537 #define STAT_FN_ENTRY(__f) \
538 static int \
539 __f ## _entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp, \
540 struct hist_entry *he) \
541 { \
542 struct c2c_hist_entry *c2c_he; \
543 int width = c2c_width(fmt, hpp, he->hists); \
544 \
545 c2c_he = container_of(he, struct c2c_hist_entry, he); \
546 return scnprintf(hpp->buf, hpp->size, "%*u", width, \
547 c2c_he->stats.__f); \
548 }
549
550 #define STAT_FN_CMP(__f) \
551 static int64_t \
552 __f ## _cmp(struct perf_hpp_fmt *fmt __maybe_unused, \
553 struct hist_entry *left, struct hist_entry *right) \
554 { \
555 struct c2c_hist_entry *c2c_left, *c2c_right; \
556 \
557 c2c_left = container_of(left, struct c2c_hist_entry, he); \
558 c2c_right = container_of(right, struct c2c_hist_entry, he); \
559 return c2c_left->stats.__f - c2c_right->stats.__f; \
560 }
561
562 #define STAT_FN(__f) \
563 STAT_FN_ENTRY(__f) \
564 STAT_FN_CMP(__f)
565
566 STAT_FN(rmt_hitm)
567 STAT_FN(lcl_hitm)
568 STAT_FN(store)
569 STAT_FN(st_l1hit)
570 STAT_FN(st_l1miss)
571 STAT_FN(ld_fbhit)
572 STAT_FN(ld_l1hit)
573 STAT_FN(ld_l2hit)
574 STAT_FN(ld_llchit)
575 STAT_FN(rmt_hit)
576
577 static uint64_t llc_miss(struct c2c_stats *stats)
578 {
579 uint64_t llcmiss;
580
581 llcmiss = stats->lcl_dram +
582 stats->rmt_dram +
583 stats->rmt_hitm +
584 stats->rmt_hit;
585
586 return llcmiss;
587 }
588
589 static int
590 ld_llcmiss_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
591 struct hist_entry *he)
592 {
593 struct c2c_hist_entry *c2c_he;
594 int width = c2c_width(fmt, hpp, he->hists);
595
596 c2c_he = container_of(he, struct c2c_hist_entry, he);
597
598 return scnprintf(hpp->buf, hpp->size, "%*lu", width,
599 llc_miss(&c2c_he->stats));
600 }
601
602 static int64_t
603 ld_llcmiss_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
604 struct hist_entry *left, struct hist_entry *right)
605 {
606 struct c2c_hist_entry *c2c_left;
607 struct c2c_hist_entry *c2c_right;
608
609 c2c_left = container_of(left, struct c2c_hist_entry, he);
610 c2c_right = container_of(right, struct c2c_hist_entry, he);
611
612 return llc_miss(&c2c_left->stats) - llc_miss(&c2c_right->stats);
613 }
614
615 static uint64_t total_records(struct c2c_stats *stats)
616 {
617 uint64_t lclmiss, ldcnt, total;
618
619 lclmiss = stats->lcl_dram +
620 stats->rmt_dram +
621 stats->rmt_hitm +
622 stats->rmt_hit;
623
624 ldcnt = lclmiss +
625 stats->ld_fbhit +
626 stats->ld_l1hit +
627 stats->ld_l2hit +
628 stats->ld_llchit +
629 stats->lcl_hitm;
630
631 total = ldcnt +
632 stats->st_l1hit +
633 stats->st_l1miss;
634
635 return total;
636 }
637
638 static int
639 tot_recs_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
640 struct hist_entry *he)
641 {
642 struct c2c_hist_entry *c2c_he;
643 int width = c2c_width(fmt, hpp, he->hists);
644 uint64_t tot_recs;
645
646 c2c_he = container_of(he, struct c2c_hist_entry, he);
647 tot_recs = total_records(&c2c_he->stats);
648
649 return scnprintf(hpp->buf, hpp->size, "%*" PRIu64, width, tot_recs);
650 }
651
652 static int64_t
653 tot_recs_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
654 struct hist_entry *left, struct hist_entry *right)
655 {
656 struct c2c_hist_entry *c2c_left;
657 struct c2c_hist_entry *c2c_right;
658 uint64_t tot_recs_left;
659 uint64_t tot_recs_right;
660
661 c2c_left = container_of(left, struct c2c_hist_entry, he);
662 c2c_right = container_of(right, struct c2c_hist_entry, he);
663
664 tot_recs_left = total_records(&c2c_left->stats);
665 tot_recs_right = total_records(&c2c_right->stats);
666
667 return tot_recs_left - tot_recs_right;
668 }
669
670 static uint64_t total_loads(struct c2c_stats *stats)
671 {
672 uint64_t lclmiss, ldcnt;
673
674 lclmiss = stats->lcl_dram +
675 stats->rmt_dram +
676 stats->rmt_hitm +
677 stats->rmt_hit;
678
679 ldcnt = lclmiss +
680 stats->ld_fbhit +
681 stats->ld_l1hit +
682 stats->ld_l2hit +
683 stats->ld_llchit +
684 stats->lcl_hitm;
685
686 return ldcnt;
687 }
688
689 static int
690 tot_loads_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
691 struct hist_entry *he)
692 {
693 struct c2c_hist_entry *c2c_he;
694 int width = c2c_width(fmt, hpp, he->hists);
695 uint64_t tot_recs;
696
697 c2c_he = container_of(he, struct c2c_hist_entry, he);
698 tot_recs = total_loads(&c2c_he->stats);
699
700 return scnprintf(hpp->buf, hpp->size, "%*" PRIu64, width, tot_recs);
701 }
702
703 static int64_t
704 tot_loads_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
705 struct hist_entry *left, struct hist_entry *right)
706 {
707 struct c2c_hist_entry *c2c_left;
708 struct c2c_hist_entry *c2c_right;
709 uint64_t tot_recs_left;
710 uint64_t tot_recs_right;
711
712 c2c_left = container_of(left, struct c2c_hist_entry, he);
713 c2c_right = container_of(right, struct c2c_hist_entry, he);
714
715 tot_recs_left = total_loads(&c2c_left->stats);
716 tot_recs_right = total_loads(&c2c_right->stats);
717
718 return tot_recs_left - tot_recs_right;
719 }
720
721 typedef double (get_percent_cb)(struct c2c_hist_entry *);
722
723 static int
724 percent_color(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
725 struct hist_entry *he, get_percent_cb get_percent)
726 {
727 struct c2c_hist_entry *c2c_he;
728 int width = c2c_width(fmt, hpp, he->hists);
729 double per;
730
731 c2c_he = container_of(he, struct c2c_hist_entry, he);
732 per = get_percent(c2c_he);
733
734 #ifdef HAVE_SLANG_SUPPORT
735 if (use_browser)
736 return __hpp__slsmg_color_printf(hpp, "%*.2f%%", width - 1, per);
737 #endif
738 return hpp_color_scnprintf(hpp, "%*.2f%%", width - 1, per);
739 }
740
741 static double percent_hitm(struct c2c_hist_entry *c2c_he)
742 {
743 struct c2c_hists *hists;
744 struct c2c_stats *stats;
745 struct c2c_stats *total;
746 int tot = 0, st = 0;
747 double p;
748
749 hists = container_of(c2c_he->he.hists, struct c2c_hists, hists);
750 stats = &c2c_he->stats;
751 total = &hists->stats;
752
753 switch (c2c.display) {
754 case DISPLAY_RMT:
755 st = stats->rmt_hitm;
756 tot = total->rmt_hitm;
757 break;
758 case DISPLAY_LCL:
759 st = stats->lcl_hitm;
760 tot = total->lcl_hitm;
761 break;
762 case DISPLAY_TOT:
763 st = stats->tot_hitm;
764 tot = total->tot_hitm;
765 default:
766 break;
767 }
768
769 p = tot ? (double) st / tot : 0;
770
771 return 100 * p;
772 }
773
774 #define PERC_STR(__s, __v) \
775 ({ \
776 scnprintf(__s, sizeof(__s), "%.2F%%", __v); \
777 __s; \
778 })
779
780 static int
781 percent_hitm_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
782 struct hist_entry *he)
783 {
784 struct c2c_hist_entry *c2c_he;
785 int width = c2c_width(fmt, hpp, he->hists);
786 char buf[10];
787 double per;
788
789 c2c_he = container_of(he, struct c2c_hist_entry, he);
790 per = percent_hitm(c2c_he);
791 return scnprintf(hpp->buf, hpp->size, "%*s", width, PERC_STR(buf, per));
792 }
793
794 static int
795 percent_hitm_color(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
796 struct hist_entry *he)
797 {
798 return percent_color(fmt, hpp, he, percent_hitm);
799 }
800
801 static int64_t
802 percent_hitm_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
803 struct hist_entry *left, struct hist_entry *right)
804 {
805 struct c2c_hist_entry *c2c_left;
806 struct c2c_hist_entry *c2c_right;
807 double per_left;
808 double per_right;
809
810 c2c_left = container_of(left, struct c2c_hist_entry, he);
811 c2c_right = container_of(right, struct c2c_hist_entry, he);
812
813 per_left = percent_hitm(c2c_left);
814 per_right = percent_hitm(c2c_right);
815
816 return per_left - per_right;
817 }
818
819 static struct c2c_stats *he_stats(struct hist_entry *he)
820 {
821 struct c2c_hist_entry *c2c_he;
822
823 c2c_he = container_of(he, struct c2c_hist_entry, he);
824 return &c2c_he->stats;
825 }
826
827 static struct c2c_stats *total_stats(struct hist_entry *he)
828 {
829 struct c2c_hists *hists;
830
831 hists = container_of(he->hists, struct c2c_hists, hists);
832 return &hists->stats;
833 }
834
835 static double percent(int st, int tot)
836 {
837 return tot ? 100. * (double) st / (double) tot : 0;
838 }
839
840 #define PERCENT(__h, __f) percent(he_stats(__h)->__f, total_stats(__h)->__f)
841
842 #define PERCENT_FN(__f) \
843 static double percent_ ## __f(struct c2c_hist_entry *c2c_he) \
844 { \
845 struct c2c_hists *hists; \
846 \
847 hists = container_of(c2c_he->he.hists, struct c2c_hists, hists); \
848 return percent(c2c_he->stats.__f, hists->stats.__f); \
849 }
850
851 PERCENT_FN(rmt_hitm)
852 PERCENT_FN(lcl_hitm)
853 PERCENT_FN(st_l1hit)
854 PERCENT_FN(st_l1miss)
855
856 static int
857 percent_rmt_hitm_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
858 struct hist_entry *he)
859 {
860 int width = c2c_width(fmt, hpp, he->hists);
861 double per = PERCENT(he, rmt_hitm);
862 char buf[10];
863
864 return scnprintf(hpp->buf, hpp->size, "%*s", width, PERC_STR(buf, per));
865 }
866
867 static int
868 percent_rmt_hitm_color(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
869 struct hist_entry *he)
870 {
871 return percent_color(fmt, hpp, he, percent_rmt_hitm);
872 }
873
874 static int64_t
875 percent_rmt_hitm_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
876 struct hist_entry *left, struct hist_entry *right)
877 {
878 double per_left;
879 double per_right;
880
881 per_left = PERCENT(left, lcl_hitm);
882 per_right = PERCENT(right, lcl_hitm);
883
884 return per_left - per_right;
885 }
886
887 static int
888 percent_lcl_hitm_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
889 struct hist_entry *he)
890 {
891 int width = c2c_width(fmt, hpp, he->hists);
892 double per = PERCENT(he, lcl_hitm);
893 char buf[10];
894
895 return scnprintf(hpp->buf, hpp->size, "%*s", width, PERC_STR(buf, per));
896 }
897
898 static int
899 percent_lcl_hitm_color(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
900 struct hist_entry *he)
901 {
902 return percent_color(fmt, hpp, he, percent_lcl_hitm);
903 }
904
905 static int64_t
906 percent_lcl_hitm_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
907 struct hist_entry *left, struct hist_entry *right)
908 {
909 double per_left;
910 double per_right;
911
912 per_left = PERCENT(left, lcl_hitm);
913 per_right = PERCENT(right, lcl_hitm);
914
915 return per_left - per_right;
916 }
917
918 static int
919 percent_stores_l1hit_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
920 struct hist_entry *he)
921 {
922 int width = c2c_width(fmt, hpp, he->hists);
923 double per = PERCENT(he, st_l1hit);
924 char buf[10];
925
926 return scnprintf(hpp->buf, hpp->size, "%*s", width, PERC_STR(buf, per));
927 }
928
929 static int
930 percent_stores_l1hit_color(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
931 struct hist_entry *he)
932 {
933 return percent_color(fmt, hpp, he, percent_st_l1hit);
934 }
935
936 static int64_t
937 percent_stores_l1hit_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
938 struct hist_entry *left, struct hist_entry *right)
939 {
940 double per_left;
941 double per_right;
942
943 per_left = PERCENT(left, st_l1hit);
944 per_right = PERCENT(right, st_l1hit);
945
946 return per_left - per_right;
947 }
948
949 static int
950 percent_stores_l1miss_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
951 struct hist_entry *he)
952 {
953 int width = c2c_width(fmt, hpp, he->hists);
954 double per = PERCENT(he, st_l1miss);
955 char buf[10];
956
957 return scnprintf(hpp->buf, hpp->size, "%*s", width, PERC_STR(buf, per));
958 }
959
960 static int
961 percent_stores_l1miss_color(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
962 struct hist_entry *he)
963 {
964 return percent_color(fmt, hpp, he, percent_st_l1miss);
965 }
966
967 static int64_t
968 percent_stores_l1miss_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
969 struct hist_entry *left, struct hist_entry *right)
970 {
971 double per_left;
972 double per_right;
973
974 per_left = PERCENT(left, st_l1miss);
975 per_right = PERCENT(right, st_l1miss);
976
977 return per_left - per_right;
978 }
979
980 STAT_FN(lcl_dram)
981 STAT_FN(rmt_dram)
982
983 static int
984 pid_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
985 struct hist_entry *he)
986 {
987 int width = c2c_width(fmt, hpp, he->hists);
988
989 return scnprintf(hpp->buf, hpp->size, "%*d", width, he->thread->pid_);
990 }
991
992 static int64_t
993 pid_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
994 struct hist_entry *left, struct hist_entry *right)
995 {
996 return left->thread->pid_ - right->thread->pid_;
997 }
998
999 static int64_t
1000 empty_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
1001 struct hist_entry *left __maybe_unused,
1002 struct hist_entry *right __maybe_unused)
1003 {
1004 return 0;
1005 }
1006
1007 static int
1008 node_entry(struct perf_hpp_fmt *fmt __maybe_unused, struct perf_hpp *hpp,
1009 struct hist_entry *he)
1010 {
1011 struct c2c_hist_entry *c2c_he;
1012 bool first = true;
1013 int node;
1014 int ret = 0;
1015
1016 c2c_he = container_of(he, struct c2c_hist_entry, he);
1017
1018 for (node = 0; node < c2c.nodes_cnt; node++) {
1019 DECLARE_BITMAP(set, c2c.cpus_cnt);
1020
1021 bitmap_zero(set, c2c.cpus_cnt);
1022 bitmap_and(set, c2c_he->cpuset, c2c.nodes[node], c2c.cpus_cnt);
1023
1024 if (!bitmap_weight(set, c2c.cpus_cnt)) {
1025 if (c2c.node_info == 1) {
1026 ret = scnprintf(hpp->buf, hpp->size, "%21s", " ");
1027 advance_hpp(hpp, ret);
1028 }
1029 continue;
1030 }
1031
1032 if (!first) {
1033 ret = scnprintf(hpp->buf, hpp->size, " ");
1034 advance_hpp(hpp, ret);
1035 }
1036
1037 switch (c2c.node_info) {
1038 case 0:
1039 ret = scnprintf(hpp->buf, hpp->size, "%2d", node);
1040 advance_hpp(hpp, ret);
1041 break;
1042 case 1:
1043 {
1044 int num = bitmap_weight(c2c_he->cpuset, c2c.cpus_cnt);
1045 struct c2c_stats *stats = &c2c_he->node_stats[node];
1046
1047 ret = scnprintf(hpp->buf, hpp->size, "%2d{%2d ", node, num);
1048 advance_hpp(hpp, ret);
1049
1050 #define DISPLAY_HITM(__h) \
1051 if (c2c_he->stats.__h> 0) { \
1052 ret = scnprintf(hpp->buf, hpp->size, "%5.1f%% ", \
1053 percent(stats->__h, c2c_he->stats.__h));\
1054 } else { \
1055 ret = scnprintf(hpp->buf, hpp->size, "%6s ", "n/a"); \
1056 }
1057
1058 switch (c2c.display) {
1059 case DISPLAY_RMT:
1060 DISPLAY_HITM(rmt_hitm);
1061 break;
1062 case DISPLAY_LCL:
1063 DISPLAY_HITM(lcl_hitm);
1064 break;
1065 case DISPLAY_TOT:
1066 DISPLAY_HITM(tot_hitm);
1067 default:
1068 break;
1069 }
1070
1071 #undef DISPLAY_HITM
1072
1073 advance_hpp(hpp, ret);
1074
1075 if (c2c_he->stats.store > 0) {
1076 ret = scnprintf(hpp->buf, hpp->size, "%5.1f%%}",
1077 percent(stats->store, c2c_he->stats.store));
1078 } else {
1079 ret = scnprintf(hpp->buf, hpp->size, "%6s}", "n/a");
1080 }
1081
1082 advance_hpp(hpp, ret);
1083 break;
1084 }
1085 case 2:
1086 ret = scnprintf(hpp->buf, hpp->size, "%2d{", node);
1087 advance_hpp(hpp, ret);
1088
1089 ret = bitmap_scnprintf(set, c2c.cpus_cnt, hpp->buf, hpp->size);
1090 advance_hpp(hpp, ret);
1091
1092 ret = scnprintf(hpp->buf, hpp->size, "}");
1093 advance_hpp(hpp, ret);
1094 break;
1095 default:
1096 break;
1097 }
1098
1099 first = false;
1100 }
1101
1102 return 0;
1103 }
1104
1105 static int
1106 mean_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
1107 struct hist_entry *he, double mean)
1108 {
1109 int width = c2c_width(fmt, hpp, he->hists);
1110 char buf[10];
1111
1112 scnprintf(buf, 10, "%6.0f", mean);
1113 return scnprintf(hpp->buf, hpp->size, "%*s", width, buf);
1114 }
1115
1116 #define MEAN_ENTRY(__func, __val) \
1117 static int \
1118 __func(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp, struct hist_entry *he) \
1119 { \
1120 struct c2c_hist_entry *c2c_he; \
1121 c2c_he = container_of(he, struct c2c_hist_entry, he); \
1122 return mean_entry(fmt, hpp, he, avg_stats(&c2c_he->cstats.__val)); \
1123 }
1124
1125 MEAN_ENTRY(mean_rmt_entry, rmt_hitm);
1126 MEAN_ENTRY(mean_lcl_entry, lcl_hitm);
1127 MEAN_ENTRY(mean_load_entry, load);
1128
1129 static int
1130 cpucnt_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
1131 struct hist_entry *he)
1132 {
1133 struct c2c_hist_entry *c2c_he;
1134 int width = c2c_width(fmt, hpp, he->hists);
1135 char buf[10];
1136
1137 c2c_he = container_of(he, struct c2c_hist_entry, he);
1138
1139 scnprintf(buf, 10, "%d", bitmap_weight(c2c_he->cpuset, c2c.cpus_cnt));
1140 return scnprintf(hpp->buf, hpp->size, "%*s", width, buf);
1141 }
1142
1143 static int
1144 cl_idx_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
1145 struct hist_entry *he)
1146 {
1147 struct c2c_hist_entry *c2c_he;
1148 int width = c2c_width(fmt, hpp, he->hists);
1149 char buf[10];
1150
1151 c2c_he = container_of(he, struct c2c_hist_entry, he);
1152
1153 scnprintf(buf, 10, "%u", c2c_he->cacheline_idx);
1154 return scnprintf(hpp->buf, hpp->size, "%*s", width, buf);
1155 }
1156
1157 static int
1158 cl_idx_empty_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
1159 struct hist_entry *he)
1160 {
1161 int width = c2c_width(fmt, hpp, he->hists);
1162
1163 return scnprintf(hpp->buf, hpp->size, "%*s", width, "");
1164 }
1165
1166 #define HEADER_LOW(__h) \
1167 { \
1168 .line[1] = { \
1169 .text = __h, \
1170 }, \
1171 }
1172
1173 #define HEADER_BOTH(__h0, __h1) \
1174 { \
1175 .line[0] = { \
1176 .text = __h0, \
1177 }, \
1178 .line[1] = { \
1179 .text = __h1, \
1180 }, \
1181 }
1182
1183 #define HEADER_SPAN(__h0, __h1, __s) \
1184 { \
1185 .line[0] = { \
1186 .text = __h0, \
1187 .span = __s, \
1188 }, \
1189 .line[1] = { \
1190 .text = __h1, \
1191 }, \
1192 }
1193
1194 #define HEADER_SPAN_LOW(__h) \
1195 { \
1196 .line[1] = { \
1197 .text = __h, \
1198 }, \
1199 }
1200
1201 static struct c2c_dimension dim_dcacheline = {
1202 .header = HEADER_LOW("Cacheline"),
1203 .name = "dcacheline",
1204 .cmp = dcacheline_cmp,
1205 .entry = dcacheline_entry,
1206 .width = 18,
1207 };
1208
1209 static struct c2c_header header_offset_tui = HEADER_LOW("Off");
1210
1211 static struct c2c_dimension dim_offset = {
1212 .header = HEADER_BOTH("Data address", "Offset"),
1213 .name = "offset",
1214 .cmp = offset_cmp,
1215 .entry = offset_entry,
1216 .width = 18,
1217 };
1218
1219 static struct c2c_dimension dim_iaddr = {
1220 .header = HEADER_LOW("Code address"),
1221 .name = "iaddr",
1222 .cmp = iaddr_cmp,
1223 .entry = iaddr_entry,
1224 .width = 18,
1225 };
1226
1227 static struct c2c_dimension dim_tot_hitm = {
1228 .header = HEADER_SPAN("----- LLC Load Hitm -----", "Total", 2),
1229 .name = "tot_hitm",
1230 .cmp = tot_hitm_cmp,
1231 .entry = tot_hitm_entry,
1232 .width = 7,
1233 };
1234
1235 static struct c2c_dimension dim_lcl_hitm = {
1236 .header = HEADER_SPAN_LOW("Lcl"),
1237 .name = "lcl_hitm",
1238 .cmp = lcl_hitm_cmp,
1239 .entry = lcl_hitm_entry,
1240 .width = 7,
1241 };
1242
1243 static struct c2c_dimension dim_rmt_hitm = {
1244 .header = HEADER_SPAN_LOW("Rmt"),
1245 .name = "rmt_hitm",
1246 .cmp = rmt_hitm_cmp,
1247 .entry = rmt_hitm_entry,
1248 .width = 7,
1249 };
1250
1251 static struct c2c_dimension dim_cl_rmt_hitm = {
1252 .header = HEADER_SPAN("----- HITM -----", "Rmt", 1),
1253 .name = "cl_rmt_hitm",
1254 .cmp = rmt_hitm_cmp,
1255 .entry = rmt_hitm_entry,
1256 .width = 7,
1257 };
1258
1259 static struct c2c_dimension dim_cl_lcl_hitm = {
1260 .header = HEADER_SPAN_LOW("Lcl"),
1261 .name = "cl_lcl_hitm",
1262 .cmp = lcl_hitm_cmp,
1263 .entry = lcl_hitm_entry,
1264 .width = 7,
1265 };
1266
1267 static struct c2c_dimension dim_stores = {
1268 .header = HEADER_SPAN("---- Store Reference ----", "Total", 2),
1269 .name = "stores",
1270 .cmp = store_cmp,
1271 .entry = store_entry,
1272 .width = 7,
1273 };
1274
1275 static struct c2c_dimension dim_stores_l1hit = {
1276 .header = HEADER_SPAN_LOW("L1Hit"),
1277 .name = "stores_l1hit",
1278 .cmp = st_l1hit_cmp,
1279 .entry = st_l1hit_entry,
1280 .width = 7,
1281 };
1282
1283 static struct c2c_dimension dim_stores_l1miss = {
1284 .header = HEADER_SPAN_LOW("L1Miss"),
1285 .name = "stores_l1miss",
1286 .cmp = st_l1miss_cmp,
1287 .entry = st_l1miss_entry,
1288 .width = 7,
1289 };
1290
1291 static struct c2c_dimension dim_cl_stores_l1hit = {
1292 .header = HEADER_SPAN("-- Store Refs --", "L1 Hit", 1),
1293 .name = "cl_stores_l1hit",
1294 .cmp = st_l1hit_cmp,
1295 .entry = st_l1hit_entry,
1296 .width = 7,
1297 };
1298
1299 static struct c2c_dimension dim_cl_stores_l1miss = {
1300 .header = HEADER_SPAN_LOW("L1 Miss"),
1301 .name = "cl_stores_l1miss",
1302 .cmp = st_l1miss_cmp,
1303 .entry = st_l1miss_entry,
1304 .width = 7,
1305 };
1306
1307 static struct c2c_dimension dim_ld_fbhit = {
1308 .header = HEADER_SPAN("----- Core Load Hit -----", "FB", 2),
1309 .name = "ld_fbhit",
1310 .cmp = ld_fbhit_cmp,
1311 .entry = ld_fbhit_entry,
1312 .width = 7,
1313 };
1314
1315 static struct c2c_dimension dim_ld_l1hit = {
1316 .header = HEADER_SPAN_LOW("L1"),
1317 .name = "ld_l1hit",
1318 .cmp = ld_l1hit_cmp,
1319 .entry = ld_l1hit_entry,
1320 .width = 7,
1321 };
1322
1323 static struct c2c_dimension dim_ld_l2hit = {
1324 .header = HEADER_SPAN_LOW("L2"),
1325 .name = "ld_l2hit",
1326 .cmp = ld_l2hit_cmp,
1327 .entry = ld_l2hit_entry,
1328 .width = 7,
1329 };
1330
1331 static struct c2c_dimension dim_ld_llchit = {
1332 .header = HEADER_SPAN("-- LLC Load Hit --", "Llc", 1),
1333 .name = "ld_lclhit",
1334 .cmp = ld_llchit_cmp,
1335 .entry = ld_llchit_entry,
1336 .width = 8,
1337 };
1338
1339 static struct c2c_dimension dim_ld_rmthit = {
1340 .header = HEADER_SPAN_LOW("Rmt"),
1341 .name = "ld_rmthit",
1342 .cmp = rmt_hit_cmp,
1343 .entry = rmt_hit_entry,
1344 .width = 8,
1345 };
1346
1347 static struct c2c_dimension dim_ld_llcmiss = {
1348 .header = HEADER_BOTH("LLC", "Ld Miss"),
1349 .name = "ld_llcmiss",
1350 .cmp = ld_llcmiss_cmp,
1351 .entry = ld_llcmiss_entry,
1352 .width = 7,
1353 };
1354
1355 static struct c2c_dimension dim_tot_recs = {
1356 .header = HEADER_BOTH("Total", "records"),
1357 .name = "tot_recs",
1358 .cmp = tot_recs_cmp,
1359 .entry = tot_recs_entry,
1360 .width = 7,
1361 };
1362
1363 static struct c2c_dimension dim_tot_loads = {
1364 .header = HEADER_BOTH("Total", "Loads"),
1365 .name = "tot_loads",
1366 .cmp = tot_loads_cmp,
1367 .entry = tot_loads_entry,
1368 .width = 7,
1369 };
1370
1371 static struct c2c_header percent_hitm_header[] = {
1372 [DISPLAY_LCL] = HEADER_BOTH("Lcl", "Hitm"),
1373 [DISPLAY_RMT] = HEADER_BOTH("Rmt", "Hitm"),
1374 [DISPLAY_TOT] = HEADER_BOTH("Tot", "Hitm"),
1375 };
1376
1377 static struct c2c_dimension dim_percent_hitm = {
1378 .name = "percent_hitm",
1379 .cmp = percent_hitm_cmp,
1380 .entry = percent_hitm_entry,
1381 .color = percent_hitm_color,
1382 .width = 7,
1383 };
1384
1385 static struct c2c_dimension dim_percent_rmt_hitm = {
1386 .header = HEADER_SPAN("----- HITM -----", "Rmt", 1),
1387 .name = "percent_rmt_hitm",
1388 .cmp = percent_rmt_hitm_cmp,
1389 .entry = percent_rmt_hitm_entry,
1390 .color = percent_rmt_hitm_color,
1391 .width = 7,
1392 };
1393
1394 static struct c2c_dimension dim_percent_lcl_hitm = {
1395 .header = HEADER_SPAN_LOW("Lcl"),
1396 .name = "percent_lcl_hitm",
1397 .cmp = percent_lcl_hitm_cmp,
1398 .entry = percent_lcl_hitm_entry,
1399 .color = percent_lcl_hitm_color,
1400 .width = 7,
1401 };
1402
1403 static struct c2c_dimension dim_percent_stores_l1hit = {
1404 .header = HEADER_SPAN("-- Store Refs --", "L1 Hit", 1),
1405 .name = "percent_stores_l1hit",
1406 .cmp = percent_stores_l1hit_cmp,
1407 .entry = percent_stores_l1hit_entry,
1408 .color = percent_stores_l1hit_color,
1409 .width = 7,
1410 };
1411
1412 static struct c2c_dimension dim_percent_stores_l1miss = {
1413 .header = HEADER_SPAN_LOW("L1 Miss"),
1414 .name = "percent_stores_l1miss",
1415 .cmp = percent_stores_l1miss_cmp,
1416 .entry = percent_stores_l1miss_entry,
1417 .color = percent_stores_l1miss_color,
1418 .width = 7,
1419 };
1420
1421 static struct c2c_dimension dim_dram_lcl = {
1422 .header = HEADER_SPAN("--- Load Dram ----", "Lcl", 1),
1423 .name = "dram_lcl",
1424 .cmp = lcl_dram_cmp,
1425 .entry = lcl_dram_entry,
1426 .width = 8,
1427 };
1428
1429 static struct c2c_dimension dim_dram_rmt = {
1430 .header = HEADER_SPAN_LOW("Rmt"),
1431 .name = "dram_rmt",
1432 .cmp = rmt_dram_cmp,
1433 .entry = rmt_dram_entry,
1434 .width = 8,
1435 };
1436
1437 static struct c2c_dimension dim_pid = {
1438 .header = HEADER_LOW("Pid"),
1439 .name = "pid",
1440 .cmp = pid_cmp,
1441 .entry = pid_entry,
1442 .width = 7,
1443 };
1444
1445 static struct c2c_dimension dim_tid = {
1446 .header = HEADER_LOW("Tid"),
1447 .name = "tid",
1448 .se = &sort_thread,
1449 };
1450
1451 static struct c2c_dimension dim_symbol = {
1452 .name = "symbol",
1453 .se = &sort_sym,
1454 };
1455
1456 static struct c2c_dimension dim_dso = {
1457 .header = HEADER_BOTH("Shared", "Object"),
1458 .name = "dso",
1459 .se = &sort_dso,
1460 };
1461
1462 static struct c2c_header header_node[3] = {
1463 HEADER_LOW("Node"),
1464 HEADER_LOW("Node{cpus %hitms %stores}"),
1465 HEADER_LOW("Node{cpu list}"),
1466 };
1467
1468 static struct c2c_dimension dim_node = {
1469 .name = "node",
1470 .cmp = empty_cmp,
1471 .entry = node_entry,
1472 .width = 4,
1473 };
1474
1475 static struct c2c_dimension dim_mean_rmt = {
1476 .header = HEADER_SPAN("---------- cycles ----------", "rmt hitm", 2),
1477 .name = "mean_rmt",
1478 .cmp = empty_cmp,
1479 .entry = mean_rmt_entry,
1480 .width = 8,
1481 };
1482
1483 static struct c2c_dimension dim_mean_lcl = {
1484 .header = HEADER_SPAN_LOW("lcl hitm"),
1485 .name = "mean_lcl",
1486 .cmp = empty_cmp,
1487 .entry = mean_lcl_entry,
1488 .width = 8,
1489 };
1490
1491 static struct c2c_dimension dim_mean_load = {
1492 .header = HEADER_SPAN_LOW("load"),
1493 .name = "mean_load",
1494 .cmp = empty_cmp,
1495 .entry = mean_load_entry,
1496 .width = 8,
1497 };
1498
1499 static struct c2c_dimension dim_cpucnt = {
1500 .header = HEADER_BOTH("cpu", "cnt"),
1501 .name = "cpucnt",
1502 .cmp = empty_cmp,
1503 .entry = cpucnt_entry,
1504 .width = 8,
1505 };
1506
1507 static struct c2c_dimension dim_srcline = {
1508 .name = "cl_srcline",
1509 .se = &sort_srcline,
1510 };
1511
1512 static struct c2c_dimension dim_dcacheline_idx = {
1513 .header = HEADER_LOW("Index"),
1514 .name = "cl_idx",
1515 .cmp = empty_cmp,
1516 .entry = cl_idx_entry,
1517 .width = 5,
1518 };
1519
1520 static struct c2c_dimension dim_dcacheline_num = {
1521 .header = HEADER_LOW("Num"),
1522 .name = "cl_num",
1523 .cmp = empty_cmp,
1524 .entry = cl_idx_entry,
1525 .width = 5,
1526 };
1527
1528 static struct c2c_dimension dim_dcacheline_num_empty = {
1529 .header = HEADER_LOW("Num"),
1530 .name = "cl_num_empty",
1531 .cmp = empty_cmp,
1532 .entry = cl_idx_empty_entry,
1533 .width = 5,
1534 };
1535
1536 static struct c2c_dimension *dimensions[] = {
1537 &dim_dcacheline,
1538 &dim_offset,
1539 &dim_iaddr,
1540 &dim_tot_hitm,
1541 &dim_lcl_hitm,
1542 &dim_rmt_hitm,
1543 &dim_cl_lcl_hitm,
1544 &dim_cl_rmt_hitm,
1545 &dim_stores,
1546 &dim_stores_l1hit,
1547 &dim_stores_l1miss,
1548 &dim_cl_stores_l1hit,
1549 &dim_cl_stores_l1miss,
1550 &dim_ld_fbhit,
1551 &dim_ld_l1hit,
1552 &dim_ld_l2hit,
1553 &dim_ld_llchit,
1554 &dim_ld_rmthit,
1555 &dim_ld_llcmiss,
1556 &dim_tot_recs,
1557 &dim_tot_loads,
1558 &dim_percent_hitm,
1559 &dim_percent_rmt_hitm,
1560 &dim_percent_lcl_hitm,
1561 &dim_percent_stores_l1hit,
1562 &dim_percent_stores_l1miss,
1563 &dim_dram_lcl,
1564 &dim_dram_rmt,
1565 &dim_pid,
1566 &dim_tid,
1567 &dim_symbol,
1568 &dim_dso,
1569 &dim_node,
1570 &dim_mean_rmt,
1571 &dim_mean_lcl,
1572 &dim_mean_load,
1573 &dim_cpucnt,
1574 &dim_srcline,
1575 &dim_dcacheline_idx,
1576 &dim_dcacheline_num,
1577 &dim_dcacheline_num_empty,
1578 NULL,
1579 };
1580
1581 static void fmt_free(struct perf_hpp_fmt *fmt)
1582 {
1583 struct c2c_fmt *c2c_fmt;
1584
1585 c2c_fmt = container_of(fmt, struct c2c_fmt, fmt);
1586 free(c2c_fmt);
1587 }
1588
1589 static bool fmt_equal(struct perf_hpp_fmt *a, struct perf_hpp_fmt *b)
1590 {
1591 struct c2c_fmt *c2c_a = container_of(a, struct c2c_fmt, fmt);
1592 struct c2c_fmt *c2c_b = container_of(b, struct c2c_fmt, fmt);
1593
1594 return c2c_a->dim == c2c_b->dim;
1595 }
1596
1597 static struct c2c_dimension *get_dimension(const char *name)
1598 {
1599 unsigned int i;
1600
1601 for (i = 0; dimensions[i]; i++) {
1602 struct c2c_dimension *dim = dimensions[i];
1603
1604 if (!strcmp(dim->name, name))
1605 return dim;
1606 };
1607
1608 return NULL;
1609 }
1610
1611 static int c2c_se_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
1612 struct hist_entry *he)
1613 {
1614 struct c2c_fmt *c2c_fmt = container_of(fmt, struct c2c_fmt, fmt);
1615 struct c2c_dimension *dim = c2c_fmt->dim;
1616 size_t len = fmt->user_len;
1617
1618 if (!len) {
1619 len = hists__col_len(he->hists, dim->se->se_width_idx);
1620
1621 if (dim == &dim_symbol || dim == &dim_srcline)
1622 len = symbol_width(he->hists, dim->se);
1623 }
1624
1625 return dim->se->se_snprintf(he, hpp->buf, hpp->size, len);
1626 }
1627
1628 static int64_t c2c_se_cmp(struct perf_hpp_fmt *fmt,
1629 struct hist_entry *a, struct hist_entry *b)
1630 {
1631 struct c2c_fmt *c2c_fmt = container_of(fmt, struct c2c_fmt, fmt);
1632 struct c2c_dimension *dim = c2c_fmt->dim;
1633
1634 return dim->se->se_cmp(a, b);
1635 }
1636
1637 static int64_t c2c_se_collapse(struct perf_hpp_fmt *fmt,
1638 struct hist_entry *a, struct hist_entry *b)
1639 {
1640 struct c2c_fmt *c2c_fmt = container_of(fmt, struct c2c_fmt, fmt);
1641 struct c2c_dimension *dim = c2c_fmt->dim;
1642 int64_t (*collapse_fn)(struct hist_entry *, struct hist_entry *);
1643
1644 collapse_fn = dim->se->se_collapse ?: dim->se->se_cmp;
1645 return collapse_fn(a, b);
1646 }
1647
1648 static struct c2c_fmt *get_format(const char *name)
1649 {
1650 struct c2c_dimension *dim = get_dimension(name);
1651 struct c2c_fmt *c2c_fmt;
1652 struct perf_hpp_fmt *fmt;
1653
1654 if (!dim)
1655 return NULL;
1656
1657 c2c_fmt = zalloc(sizeof(*c2c_fmt));
1658 if (!c2c_fmt)
1659 return NULL;
1660
1661 c2c_fmt->dim = dim;
1662
1663 fmt = &c2c_fmt->fmt;
1664 INIT_LIST_HEAD(&fmt->list);
1665 INIT_LIST_HEAD(&fmt->sort_list);
1666
1667 fmt->cmp = dim->se ? c2c_se_cmp : dim->cmp;
1668 fmt->sort = dim->se ? c2c_se_cmp : dim->cmp;
1669 fmt->color = dim->se ? NULL : dim->color;
1670 fmt->entry = dim->se ? c2c_se_entry : dim->entry;
1671 fmt->header = c2c_header;
1672 fmt->width = c2c_width;
1673 fmt->collapse = dim->se ? c2c_se_collapse : dim->cmp;
1674 fmt->equal = fmt_equal;
1675 fmt->free = fmt_free;
1676
1677 return c2c_fmt;
1678 }
1679
1680 static int c2c_hists__init_output(struct perf_hpp_list *hpp_list, char *name)
1681 {
1682 struct c2c_fmt *c2c_fmt = get_format(name);
1683
1684 if (!c2c_fmt) {
1685 reset_dimensions();
1686 return output_field_add(hpp_list, name);
1687 }
1688
1689 perf_hpp_list__column_register(hpp_list, &c2c_fmt->fmt);
1690 return 0;
1691 }
1692
1693 static int c2c_hists__init_sort(struct perf_hpp_list *hpp_list, char *name)
1694 {
1695 struct c2c_fmt *c2c_fmt = get_format(name);
1696 struct c2c_dimension *dim;
1697
1698 if (!c2c_fmt) {
1699 reset_dimensions();
1700 return sort_dimension__add(hpp_list, name, NULL, 0);
1701 }
1702
1703 dim = c2c_fmt->dim;
1704 if (dim == &dim_dso)
1705 hpp_list->dso = 1;
1706
1707 perf_hpp_list__register_sort_field(hpp_list, &c2c_fmt->fmt);
1708 return 0;
1709 }
1710
1711 #define PARSE_LIST(_list, _fn) \
1712 do { \
1713 char *tmp, *tok; \
1714 ret = 0; \
1715 \
1716 if (!_list) \
1717 break; \
1718 \
1719 for (tok = strtok_r((char *)_list, ", ", &tmp); \
1720 tok; tok = strtok_r(NULL, ", ", &tmp)) { \
1721 ret = _fn(hpp_list, tok); \
1722 if (ret == -EINVAL) { \
1723 error("Invalid --fields key: `%s'", tok); \
1724 break; \
1725 } else if (ret == -ESRCH) { \
1726 error("Unknown --fields key: `%s'", tok); \
1727 break; \
1728 } \
1729 } \
1730 } while (0)
1731
1732 static int hpp_list__parse(struct perf_hpp_list *hpp_list,
1733 const char *output_,
1734 const char *sort_)
1735 {
1736 char *output = output_ ? strdup(output_) : NULL;
1737 char *sort = sort_ ? strdup(sort_) : NULL;
1738 int ret;
1739
1740 PARSE_LIST(output, c2c_hists__init_output);
1741 PARSE_LIST(sort, c2c_hists__init_sort);
1742
1743 /* copy sort keys to output fields */
1744 perf_hpp__setup_output_field(hpp_list);
1745
1746 /*
1747 * We dont need other sorting keys other than those
1748 * we already specified. It also really slows down
1749 * the processing a lot with big number of output
1750 * fields, so switching this off for c2c.
1751 */
1752
1753 #if 0
1754 /* and then copy output fields to sort keys */
1755 perf_hpp__append_sort_keys(&hists->list);
1756 #endif
1757
1758 free(output);
1759 free(sort);
1760 return ret;
1761 }
1762
1763 static int c2c_hists__init(struct c2c_hists *hists,
1764 const char *sort,
1765 int nr_header_lines)
1766 {
1767 __hists__init(&hists->hists, &hists->list);
1768
1769 /*
1770 * Initialize only with sort fields, we need to resort
1771 * later anyway, and that's where we add output fields
1772 * as well.
1773 */
1774 perf_hpp_list__init(&hists->list);
1775
1776 /* Overload number of header lines.*/
1777 hists->list.nr_header_lines = nr_header_lines;
1778
1779 return hpp_list__parse(&hists->list, NULL, sort);
1780 }
1781
1782 static int c2c_hists__reinit(struct c2c_hists *c2c_hists,
1783 const char *output,
1784 const char *sort)
1785 {
1786 perf_hpp__reset_output_field(&c2c_hists->list);
1787 return hpp_list__parse(&c2c_hists->list, output, sort);
1788 }
1789
1790 #define DISPLAY_LINE_LIMIT 0.0005
1791
1792 static bool he__display(struct hist_entry *he, struct c2c_stats *stats)
1793 {
1794 struct c2c_hist_entry *c2c_he;
1795 double ld_dist;
1796
1797 if (c2c.show_all)
1798 return true;
1799
1800 c2c_he = container_of(he, struct c2c_hist_entry, he);
1801
1802 #define FILTER_HITM(__h) \
1803 if (stats->__h) { \
1804 ld_dist = ((double)c2c_he->stats.__h / stats->__h); \
1805 if (ld_dist < DISPLAY_LINE_LIMIT) \
1806 he->filtered = HIST_FILTER__C2C; \
1807 } else { \
1808 he->filtered = HIST_FILTER__C2C; \
1809 }
1810
1811 switch (c2c.display) {
1812 case DISPLAY_LCL:
1813 FILTER_HITM(lcl_hitm);
1814 break;
1815 case DISPLAY_RMT:
1816 FILTER_HITM(rmt_hitm);
1817 break;
1818 case DISPLAY_TOT:
1819 FILTER_HITM(tot_hitm);
1820 default:
1821 break;
1822 };
1823
1824 #undef FILTER_HITM
1825
1826 return he->filtered == 0;
1827 }
1828
1829 static inline int valid_hitm_or_store(struct hist_entry *he)
1830 {
1831 struct c2c_hist_entry *c2c_he;
1832 bool has_hitm;
1833
1834 c2c_he = container_of(he, struct c2c_hist_entry, he);
1835 has_hitm = c2c.display == DISPLAY_TOT ? c2c_he->stats.tot_hitm :
1836 c2c.display == DISPLAY_LCL ? c2c_he->stats.lcl_hitm :
1837 c2c_he->stats.rmt_hitm;
1838 return has_hitm || c2c_he->stats.store;
1839 }
1840
1841 static void calc_width(struct hist_entry *he)
1842 {
1843 struct c2c_hists *c2c_hists;
1844
1845 c2c_hists = container_of(he->hists, struct c2c_hists, hists);
1846 hists__calc_col_len(&c2c_hists->hists, he);
1847 }
1848
1849 static int filter_cb(struct hist_entry *he)
1850 {
1851 if (c2c.show_src && !he->srcline)
1852 he->srcline = hist_entry__get_srcline(he);
1853
1854 calc_width(he);
1855
1856 if (!valid_hitm_or_store(he))
1857 he->filtered = HIST_FILTER__C2C;
1858
1859 return 0;
1860 }
1861
1862 static int resort_cl_cb(struct hist_entry *he)
1863 {
1864 struct c2c_hist_entry *c2c_he;
1865 struct c2c_hists *c2c_hists;
1866 bool display = he__display(he, &c2c.hitm_stats);
1867
1868 c2c_he = container_of(he, struct c2c_hist_entry, he);
1869 c2c_hists = c2c_he->hists;
1870
1871 calc_width(he);
1872
1873 if (display && c2c_hists) {
1874 static unsigned int idx;
1875
1876 c2c_he->cacheline_idx = idx++;
1877
1878 c2c_hists__reinit(c2c_hists, c2c.cl_output, c2c.cl_resort);
1879
1880 hists__collapse_resort(&c2c_hists->hists, NULL);
1881 hists__output_resort_cb(&c2c_hists->hists, NULL, filter_cb);
1882 }
1883
1884 return 0;
1885 }
1886
1887 static void setup_nodes_header(void)
1888 {
1889 dim_node.header = header_node[c2c.node_info];
1890 }
1891
1892 static int setup_nodes(struct perf_session *session)
1893 {
1894 struct numa_node *n;
1895 unsigned long **nodes;
1896 int node, cpu;
1897 int *cpu2node;
1898
1899 if (c2c.node_info > 2)
1900 c2c.node_info = 2;
1901
1902 c2c.nodes_cnt = session->header.env.nr_numa_nodes;
1903 c2c.cpus_cnt = session->header.env.nr_cpus_online;
1904
1905 n = session->header.env.numa_nodes;
1906 if (!n)
1907 return -EINVAL;
1908
1909 nodes = zalloc(sizeof(unsigned long *) * c2c.nodes_cnt);
1910 if (!nodes)
1911 return -ENOMEM;
1912
1913 c2c.nodes = nodes;
1914
1915 cpu2node = zalloc(sizeof(int) * c2c.cpus_cnt);
1916 if (!cpu2node)
1917 return -ENOMEM;
1918
1919 for (cpu = 0; cpu < c2c.cpus_cnt; cpu++)
1920 cpu2node[cpu] = -1;
1921
1922 c2c.cpu2node = cpu2node;
1923
1924 for (node = 0; node < c2c.nodes_cnt; node++) {
1925 struct cpu_map *map = n[node].map;
1926 unsigned long *set;
1927
1928 set = bitmap_alloc(c2c.cpus_cnt);
1929 if (!set)
1930 return -ENOMEM;
1931
1932 for (cpu = 0; cpu < map->nr; cpu++) {
1933 set_bit(map->map[cpu], set);
1934
1935 if (WARN_ONCE(cpu2node[map->map[cpu]] != -1, "node/cpu topology bug"))
1936 return -EINVAL;
1937
1938 cpu2node[map->map[cpu]] = node;
1939 }
1940
1941 nodes[node] = set;
1942 }
1943
1944 setup_nodes_header();
1945 return 0;
1946 }
1947
1948 #define HAS_HITMS(__h) ((__h)->stats.lcl_hitm || (__h)->stats.rmt_hitm)
1949
1950 static int resort_hitm_cb(struct hist_entry *he)
1951 {
1952 struct c2c_hist_entry *c2c_he;
1953 c2c_he = container_of(he, struct c2c_hist_entry, he);
1954
1955 if (HAS_HITMS(c2c_he)) {
1956 c2c.shared_clines++;
1957 c2c_add_stats(&c2c.hitm_stats, &c2c_he->stats);
1958 }
1959
1960 return 0;
1961 }
1962
1963 static int hists__iterate_cb(struct hists *hists, hists__resort_cb_t cb)
1964 {
1965 struct rb_node *next = rb_first(&hists->entries);
1966 int ret = 0;
1967
1968 while (next) {
1969 struct hist_entry *he;
1970
1971 he = rb_entry(next, struct hist_entry, rb_node);
1972 ret = cb(he);
1973 if (ret)
1974 break;
1975 next = rb_next(&he->rb_node);
1976 }
1977
1978 return ret;
1979 }
1980
1981 static void print_c2c__display_stats(FILE *out)
1982 {
1983 int llc_misses;
1984 struct c2c_stats *stats = &c2c.hists.stats;
1985
1986 llc_misses = stats->lcl_dram +
1987 stats->rmt_dram +
1988 stats->rmt_hit +
1989 stats->rmt_hitm;
1990
1991 fprintf(out, "=================================================\n");
1992 fprintf(out, " Trace Event Information \n");
1993 fprintf(out, "=================================================\n");
1994 fprintf(out, " Total records : %10d\n", stats->nr_entries);
1995 fprintf(out, " Locked Load/Store Operations : %10d\n", stats->locks);
1996 fprintf(out, " Load Operations : %10d\n", stats->load);
1997 fprintf(out, " Loads - uncacheable : %10d\n", stats->ld_uncache);
1998 fprintf(out, " Loads - IO : %10d\n", stats->ld_io);
1999 fprintf(out, " Loads - Miss : %10d\n", stats->ld_miss);
2000 fprintf(out, " Loads - no mapping : %10d\n", stats->ld_noadrs);
2001 fprintf(out, " Load Fill Buffer Hit : %10d\n", stats->ld_fbhit);
2002 fprintf(out, " Load L1D hit : %10d\n", stats->ld_l1hit);
2003 fprintf(out, " Load L2D hit : %10d\n", stats->ld_l2hit);
2004 fprintf(out, " Load LLC hit : %10d\n", stats->ld_llchit + stats->lcl_hitm);
2005 fprintf(out, " Load Local HITM : %10d\n", stats->lcl_hitm);
2006 fprintf(out, " Load Remote HITM : %10d\n", stats->rmt_hitm);
2007 fprintf(out, " Load Remote HIT : %10d\n", stats->rmt_hit);
2008 fprintf(out, " Load Local DRAM : %10d\n", stats->lcl_dram);
2009 fprintf(out, " Load Remote DRAM : %10d\n", stats->rmt_dram);
2010 fprintf(out, " Load MESI State Exclusive : %10d\n", stats->ld_excl);
2011 fprintf(out, " Load MESI State Shared : %10d\n", stats->ld_shared);
2012 fprintf(out, " Load LLC Misses : %10d\n", llc_misses);
2013 fprintf(out, " LLC Misses to Local DRAM : %10.1f%%\n", ((double)stats->lcl_dram/(double)llc_misses) * 100.);
2014 fprintf(out, " LLC Misses to Remote DRAM : %10.1f%%\n", ((double)stats->rmt_dram/(double)llc_misses) * 100.);
2015 fprintf(out, " LLC Misses to Remote cache (HIT) : %10.1f%%\n", ((double)stats->rmt_hit /(double)llc_misses) * 100.);
2016 fprintf(out, " LLC Misses to Remote cache (HITM) : %10.1f%%\n", ((double)stats->rmt_hitm/(double)llc_misses) * 100.);
2017 fprintf(out, " Store Operations : %10d\n", stats->store);
2018 fprintf(out, " Store - uncacheable : %10d\n", stats->st_uncache);
2019 fprintf(out, " Store - no mapping : %10d\n", stats->st_noadrs);
2020 fprintf(out, " Store L1D Hit : %10d\n", stats->st_l1hit);
2021 fprintf(out, " Store L1D Miss : %10d\n", stats->st_l1miss);
2022 fprintf(out, " No Page Map Rejects : %10d\n", stats->nomap);
2023 fprintf(out, " Unable to parse data source : %10d\n", stats->noparse);
2024 }
2025
2026 static void print_shared_cacheline_info(FILE *out)
2027 {
2028 struct c2c_stats *stats = &c2c.hitm_stats;
2029 int hitm_cnt = stats->lcl_hitm + stats->rmt_hitm;
2030
2031 fprintf(out, "=================================================\n");
2032 fprintf(out, " Global Shared Cache Line Event Information \n");
2033 fprintf(out, "=================================================\n");
2034 fprintf(out, " Total Shared Cache Lines : %10d\n", c2c.shared_clines);
2035 fprintf(out, " Load HITs on shared lines : %10d\n", stats->load);
2036 fprintf(out, " Fill Buffer Hits on shared lines : %10d\n", stats->ld_fbhit);
2037 fprintf(out, " L1D hits on shared lines : %10d\n", stats->ld_l1hit);
2038 fprintf(out, " L2D hits on shared lines : %10d\n", stats->ld_l2hit);
2039 fprintf(out, " LLC hits on shared lines : %10d\n", stats->ld_llchit + stats->lcl_hitm);
2040 fprintf(out, " Locked Access on shared lines : %10d\n", stats->locks);
2041 fprintf(out, " Store HITs on shared lines : %10d\n", stats->store);
2042 fprintf(out, " Store L1D hits on shared lines : %10d\n", stats->st_l1hit);
2043 fprintf(out, " Total Merged records : %10d\n", hitm_cnt + stats->store);
2044 }
2045
2046 static void print_cacheline(struct c2c_hists *c2c_hists,
2047 struct hist_entry *he_cl,
2048 struct perf_hpp_list *hpp_list,
2049 FILE *out)
2050 {
2051 char bf[1000];
2052 struct perf_hpp hpp = {
2053 .buf = bf,
2054 .size = 1000,
2055 };
2056 static bool once;
2057
2058 if (!once) {
2059 hists__fprintf_headers(&c2c_hists->hists, out);
2060 once = true;
2061 } else {
2062 fprintf(out, "\n");
2063 }
2064
2065 fprintf(out, " -------------------------------------------------------------\n");
2066 __hist_entry__snprintf(he_cl, &hpp, hpp_list);
2067 fprintf(out, "%s\n", bf);
2068 fprintf(out, " -------------------------------------------------------------\n");
2069
2070 hists__fprintf(&c2c_hists->hists, false, 0, 0, 0, out, true);
2071 }
2072
2073 static void print_pareto(FILE *out)
2074 {
2075 struct perf_hpp_list hpp_list;
2076 struct rb_node *nd;
2077 int ret;
2078
2079 perf_hpp_list__init(&hpp_list);
2080 ret = hpp_list__parse(&hpp_list,
2081 "cl_num,"
2082 "cl_rmt_hitm,"
2083 "cl_lcl_hitm,"
2084 "cl_stores_l1hit,"
2085 "cl_stores_l1miss,"
2086 "dcacheline",
2087 NULL);
2088
2089 if (WARN_ONCE(ret, "failed to setup sort entries\n"))
2090 return;
2091
2092 nd = rb_first(&c2c.hists.hists.entries);
2093
2094 for (; nd; nd = rb_next(nd)) {
2095 struct hist_entry *he = rb_entry(nd, struct hist_entry, rb_node);
2096 struct c2c_hist_entry *c2c_he;
2097
2098 if (he->filtered)
2099 continue;
2100
2101 c2c_he = container_of(he, struct c2c_hist_entry, he);
2102 print_cacheline(c2c_he->hists, he, &hpp_list, out);
2103 }
2104 }
2105
2106 static void print_c2c_info(FILE *out, struct perf_session *session)
2107 {
2108 struct perf_evlist *evlist = session->evlist;
2109 struct perf_evsel *evsel;
2110 bool first = true;
2111
2112 fprintf(out, "=================================================\n");
2113 fprintf(out, " c2c details \n");
2114 fprintf(out, "=================================================\n");
2115
2116 evlist__for_each_entry(evlist, evsel) {
2117 fprintf(out, "%-36s: %s\n", first ? " Events" : "",
2118 perf_evsel__name(evsel));
2119 first = false;
2120 }
2121 fprintf(out, " Cachelines sort on : %s HITMs\n",
2122 display_str[c2c.display]);
2123 fprintf(out, " Cacheline data grouping : %s\n", c2c.cl_sort);
2124 }
2125
2126 static void perf_c2c__hists_fprintf(FILE *out, struct perf_session *session)
2127 {
2128 setup_pager();
2129
2130 print_c2c__display_stats(out);
2131 fprintf(out, "\n");
2132 print_shared_cacheline_info(out);
2133 fprintf(out, "\n");
2134 print_c2c_info(out, session);
2135
2136 if (c2c.stats_only)
2137 return;
2138
2139 fprintf(out, "\n");
2140 fprintf(out, "=================================================\n");
2141 fprintf(out, " Shared Data Cache Line Table \n");
2142 fprintf(out, "=================================================\n");
2143 fprintf(out, "#\n");
2144
2145 hists__fprintf(&c2c.hists.hists, true, 0, 0, 0, stdout, false);
2146
2147 fprintf(out, "\n");
2148 fprintf(out, "=================================================\n");
2149 fprintf(out, " Shared Cache Line Distribution Pareto \n");
2150 fprintf(out, "=================================================\n");
2151 fprintf(out, "#\n");
2152
2153 print_pareto(out);
2154 }
2155
2156 #ifdef HAVE_SLANG_SUPPORT
2157 static void c2c_browser__update_nr_entries(struct hist_browser *hb)
2158 {
2159 u64 nr_entries = 0;
2160 struct rb_node *nd = rb_first(&hb->hists->entries);
2161
2162 while (nd) {
2163 struct hist_entry *he = rb_entry(nd, struct hist_entry, rb_node);
2164
2165 if (!he->filtered)
2166 nr_entries++;
2167
2168 nd = rb_next(nd);
2169 }
2170
2171 hb->nr_non_filtered_entries = nr_entries;
2172 }
2173
2174 struct c2c_cacheline_browser {
2175 struct hist_browser hb;
2176 struct hist_entry *he;
2177 };
2178
2179 static int
2180 perf_c2c_cacheline_browser__title(struct hist_browser *browser,
2181 char *bf, size_t size)
2182 {
2183 struct c2c_cacheline_browser *cl_browser;
2184 struct hist_entry *he;
2185 uint64_t addr = 0;
2186
2187 cl_browser = container_of(browser, struct c2c_cacheline_browser, hb);
2188 he = cl_browser->he;
2189
2190 if (he->mem_info)
2191 addr = cl_address(he->mem_info->daddr.addr);
2192
2193 scnprintf(bf, size, "Cacheline 0x%lx", addr);
2194 return 0;
2195 }
2196
2197 static struct c2c_cacheline_browser*
2198 c2c_cacheline_browser__new(struct hists *hists, struct hist_entry *he)
2199 {
2200 struct c2c_cacheline_browser *browser;
2201
2202 browser = zalloc(sizeof(*browser));
2203 if (browser) {
2204 hist_browser__init(&browser->hb, hists);
2205 browser->hb.c2c_filter = true;
2206 browser->hb.title = perf_c2c_cacheline_browser__title;
2207 browser->he = he;
2208 }
2209
2210 return browser;
2211 }
2212
2213 static int perf_c2c__browse_cacheline(struct hist_entry *he)
2214 {
2215 struct c2c_hist_entry *c2c_he;
2216 struct c2c_hists *c2c_hists;
2217 struct c2c_cacheline_browser *cl_browser;
2218 struct hist_browser *browser;
2219 int key = -1;
2220 const char help[] =
2221 " ENTER Togle callchains (if present) \n"
2222 " n Togle Node details info \n"
2223 " s Togle full lenght of symbol and source line columns \n"
2224 " q Return back to cacheline list \n";
2225
2226 /* Display compact version first. */
2227 c2c.symbol_full = false;
2228
2229 c2c_he = container_of(he, struct c2c_hist_entry, he);
2230 c2c_hists = c2c_he->hists;
2231
2232 cl_browser = c2c_cacheline_browser__new(&c2c_hists->hists, he);
2233 if (cl_browser == NULL)
2234 return -1;
2235
2236 browser = &cl_browser->hb;
2237
2238 /* reset abort key so that it can get Ctrl-C as a key */
2239 SLang_reset_tty();
2240 SLang_init_tty(0, 0, 0);
2241
2242 c2c_browser__update_nr_entries(browser);
2243
2244 while (1) {
2245 key = hist_browser__run(browser, "? - help");
2246
2247 switch (key) {
2248 case 's':
2249 c2c.symbol_full = !c2c.symbol_full;
2250 break;
2251 case 'n':
2252 c2c.node_info = (c2c.node_info + 1) % 3;
2253 setup_nodes_header();
2254 break;
2255 case 'q':
2256 goto out;
2257 case '?':
2258 ui_browser__help_window(&browser->b, help);
2259 break;
2260 default:
2261 break;
2262 }
2263 }
2264
2265 out:
2266 free(cl_browser);
2267 return 0;
2268 }
2269
2270 static int perf_c2c_browser__title(struct hist_browser *browser,
2271 char *bf, size_t size)
2272 {
2273 scnprintf(bf, size,
2274 "Shared Data Cache Line Table "
2275 "(%lu entries, sorted on %s HITMs)",
2276 browser->nr_non_filtered_entries,
2277 display_str[c2c.display]);
2278 return 0;
2279 }
2280
2281 static struct hist_browser*
2282 perf_c2c_browser__new(struct hists *hists)
2283 {
2284 struct hist_browser *browser = hist_browser__new(hists);
2285
2286 if (browser) {
2287 browser->title = perf_c2c_browser__title;
2288 browser->c2c_filter = true;
2289 }
2290
2291 return browser;
2292 }
2293
2294 static int perf_c2c__hists_browse(struct hists *hists)
2295 {
2296 struct hist_browser *browser;
2297 int key = -1;
2298 const char help[] =
2299 " d Display cacheline details \n"
2300 " ENTER Togle callchains (if present) \n"
2301 " q Quit \n";
2302
2303 browser = perf_c2c_browser__new(hists);
2304 if (browser == NULL)
2305 return -1;
2306
2307 /* reset abort key so that it can get Ctrl-C as a key */
2308 SLang_reset_tty();
2309 SLang_init_tty(0, 0, 0);
2310
2311 c2c_browser__update_nr_entries(browser);
2312
2313 while (1) {
2314 key = hist_browser__run(browser, "? - help");
2315
2316 switch (key) {
2317 case 'q':
2318 goto out;
2319 case 'd':
2320 perf_c2c__browse_cacheline(browser->he_selection);
2321 break;
2322 case '?':
2323 ui_browser__help_window(&browser->b, help);
2324 break;
2325 default:
2326 break;
2327 }
2328 }
2329
2330 out:
2331 hist_browser__delete(browser);
2332 return 0;
2333 }
2334
2335 static void perf_c2c_display(struct perf_session *session)
2336 {
2337 if (c2c.use_stdio)
2338 perf_c2c__hists_fprintf(stdout, session);
2339 else
2340 perf_c2c__hists_browse(&c2c.hists.hists);
2341 }
2342 #else
2343 static void perf_c2c_display(struct perf_session *session)
2344 {
2345 use_browser = 0;
2346 perf_c2c__hists_fprintf(stdout, session);
2347 }
2348 #endif /* HAVE_SLANG_SUPPORT */
2349
2350 static void ui_quirks(void)
2351 {
2352 if (!c2c.use_stdio) {
2353 dim_offset.width = 5;
2354 dim_offset.header = header_offset_tui;
2355 }
2356
2357 dim_percent_hitm.header = percent_hitm_header[c2c.display];
2358 }
2359
2360 #define CALLCHAIN_DEFAULT_OPT "graph,0.5,caller,function,percent"
2361
2362 const char callchain_help[] = "Display call graph (stack chain/backtrace):\n\n"
2363 CALLCHAIN_REPORT_HELP
2364 "\n\t\t\t\tDefault: " CALLCHAIN_DEFAULT_OPT;
2365
2366 static int
2367 parse_callchain_opt(const struct option *opt, const char *arg, int unset)
2368 {
2369 struct callchain_param *callchain = opt->value;
2370
2371 callchain->enabled = !unset;
2372 /*
2373 * --no-call-graph
2374 */
2375 if (unset) {
2376 symbol_conf.use_callchain = false;
2377 callchain->mode = CHAIN_NONE;
2378 return 0;
2379 }
2380
2381 return parse_callchain_report_opt(arg);
2382 }
2383
2384 static int setup_callchain(struct perf_evlist *evlist)
2385 {
2386 u64 sample_type = perf_evlist__combined_sample_type(evlist);
2387 enum perf_call_graph_mode mode = CALLCHAIN_NONE;
2388
2389 if ((sample_type & PERF_SAMPLE_REGS_USER) &&
2390 (sample_type & PERF_SAMPLE_STACK_USER))
2391 mode = CALLCHAIN_DWARF;
2392 else if (sample_type & PERF_SAMPLE_BRANCH_STACK)
2393 mode = CALLCHAIN_LBR;
2394 else if (sample_type & PERF_SAMPLE_CALLCHAIN)
2395 mode = CALLCHAIN_FP;
2396
2397 if (!callchain_param.enabled &&
2398 callchain_param.mode != CHAIN_NONE &&
2399 mode != CALLCHAIN_NONE) {
2400 symbol_conf.use_callchain = true;
2401 if (callchain_register_param(&callchain_param) < 0) {
2402 ui__error("Can't register callchain params.\n");
2403 return -EINVAL;
2404 }
2405 }
2406
2407 callchain_param.record_mode = mode;
2408 callchain_param.min_percent = 0;
2409 return 0;
2410 }
2411
2412 static int setup_display(const char *str)
2413 {
2414 const char *display = str ?: "tot";
2415
2416 if (!strcmp(display, "tot"))
2417 c2c.display = DISPLAY_TOT;
2418 else if (!strcmp(display, "rmt"))
2419 c2c.display = DISPLAY_RMT;
2420 else if (!strcmp(display, "lcl"))
2421 c2c.display = DISPLAY_LCL;
2422 else {
2423 pr_err("failed: unknown display type: %s\n", str);
2424 return -1;
2425 }
2426
2427 return 0;
2428 }
2429
2430 #define for_each_token(__tok, __buf, __sep, __tmp) \
2431 for (__tok = strtok_r(__buf, __sep, &__tmp); __tok; \
2432 __tok = strtok_r(NULL, __sep, &__tmp))
2433
2434 static int build_cl_output(char *cl_sort, bool no_source)
2435 {
2436 char *tok, *tmp, *buf = strdup(cl_sort);
2437 bool add_pid = false;
2438 bool add_tid = false;
2439 bool add_iaddr = false;
2440 bool add_sym = false;
2441 bool add_dso = false;
2442 bool add_src = false;
2443
2444 if (!buf)
2445 return -ENOMEM;
2446
2447 for_each_token(tok, buf, ",", tmp) {
2448 if (!strcmp(tok, "tid")) {
2449 add_tid = true;
2450 } else if (!strcmp(tok, "pid")) {
2451 add_pid = true;
2452 } else if (!strcmp(tok, "iaddr")) {
2453 add_iaddr = true;
2454 add_sym = true;
2455 add_dso = true;
2456 add_src = no_source ? false : true;
2457 } else if (!strcmp(tok, "dso")) {
2458 add_dso = true;
2459 } else if (strcmp(tok, "offset")) {
2460 pr_err("unrecognized sort token: %s\n", tok);
2461 return -EINVAL;
2462 }
2463 }
2464
2465 if (asprintf(&c2c.cl_output,
2466 "%s%s%s%s%s%s%s%s%s%s",
2467 c2c.use_stdio ? "cl_num_empty," : "",
2468 "percent_rmt_hitm,"
2469 "percent_lcl_hitm,"
2470 "percent_stores_l1hit,"
2471 "percent_stores_l1miss,"
2472 "offset,",
2473 add_pid ? "pid," : "",
2474 add_tid ? "tid," : "",
2475 add_iaddr ? "iaddr," : "",
2476 "mean_rmt,"
2477 "mean_lcl,"
2478 "mean_load,"
2479 "tot_recs,"
2480 "cpucnt,",
2481 add_sym ? "symbol," : "",
2482 add_dso ? "dso," : "",
2483 add_src ? "cl_srcline," : "",
2484 "node") < 0)
2485 return -ENOMEM;
2486
2487 c2c.show_src = add_src;
2488
2489 free(buf);
2490 return 0;
2491 }
2492
2493 static int setup_coalesce(const char *coalesce, bool no_source)
2494 {
2495 const char *c = coalesce ?: coalesce_default;
2496
2497 if (asprintf(&c2c.cl_sort, "offset,%s", c) < 0)
2498 return -ENOMEM;
2499
2500 if (build_cl_output(c2c.cl_sort, no_source))
2501 return -1;
2502
2503 if (asprintf(&c2c.cl_resort, "offset,%s",
2504 c2c.display == DISPLAY_TOT ?
2505 "tot_hitm" :
2506 c2c.display == DISPLAY_RMT ?
2507 "rmt_hitm,lcl_hitm" :
2508 "lcl_hitm,rmt_hitm") < 0)
2509 return -ENOMEM;
2510
2511 pr_debug("coalesce sort fields: %s\n", c2c.cl_sort);
2512 pr_debug("coalesce resort fields: %s\n", c2c.cl_resort);
2513 pr_debug("coalesce output fields: %s\n", c2c.cl_output);
2514 return 0;
2515 }
2516
2517 static int perf_c2c__report(int argc, const char **argv)
2518 {
2519 struct perf_session *session;
2520 struct ui_progress prog;
2521 struct perf_data_file file = {
2522 .mode = PERF_DATA_MODE_READ,
2523 };
2524 char callchain_default_opt[] = CALLCHAIN_DEFAULT_OPT;
2525 const char *display = NULL;
2526 const char *coalesce = NULL;
2527 bool no_source = false;
2528 const struct option options[] = {
2529 OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
2530 "file", "vmlinux pathname"),
2531 OPT_STRING('i', "input", &input_name, "file",
2532 "the input file to process"),
2533 OPT_INCR('N', "node-info", &c2c.node_info,
2534 "show extra node info in report (repeat for more info)"),
2535 #ifdef HAVE_SLANG_SUPPORT
2536 OPT_BOOLEAN(0, "stdio", &c2c.use_stdio, "Use the stdio interface"),
2537 #endif
2538 OPT_BOOLEAN(0, "stats", &c2c.stats_only,
2539 "Use the stdio interface"),
2540 OPT_BOOLEAN(0, "full-symbols", &c2c.symbol_full,
2541 "Display full length of symbols"),
2542 OPT_BOOLEAN(0, "no-source", &no_source,
2543 "Do not display Source Line column"),
2544 OPT_BOOLEAN(0, "show-all", &c2c.show_all,
2545 "Show all captured HITM lines."),
2546 OPT_CALLBACK_DEFAULT('g', "call-graph", &callchain_param,
2547 "print_type,threshold[,print_limit],order,sort_key[,branch],value",
2548 callchain_help, &parse_callchain_opt,
2549 callchain_default_opt),
2550 OPT_STRING('d', "display", &display, "Switch HITM output type", "lcl,rmt"),
2551 OPT_STRING('c', "coalesce", &coalesce, "coalesce fields",
2552 "coalesce fields: pid,tid,iaddr,dso"),
2553 OPT_BOOLEAN('f', "force", &symbol_conf.force, "don't complain, do it"),
2554 OPT_PARENT(c2c_options),
2555 OPT_END()
2556 };
2557 int err = 0;
2558
2559 argc = parse_options(argc, argv, options, report_c2c_usage,
2560 PARSE_OPT_STOP_AT_NON_OPTION);
2561 if (argc)
2562 usage_with_options(report_c2c_usage, options);
2563
2564 if (c2c.stats_only)
2565 c2c.use_stdio = true;
2566
2567 if (!input_name || !strlen(input_name))
2568 input_name = "perf.data";
2569
2570 file.path = input_name;
2571 file.force = symbol_conf.force;
2572
2573 err = setup_display(display);
2574 if (err)
2575 goto out;
2576
2577 err = setup_coalesce(coalesce, no_source);
2578 if (err) {
2579 pr_debug("Failed to initialize hists\n");
2580 goto out;
2581 }
2582
2583 err = c2c_hists__init(&c2c.hists, "dcacheline", 2);
2584 if (err) {
2585 pr_debug("Failed to initialize hists\n");
2586 goto out;
2587 }
2588
2589 session = perf_session__new(&file, 0, &c2c.tool);
2590 if (session == NULL) {
2591 pr_debug("No memory for session\n");
2592 goto out;
2593 }
2594
2595 err = setup_nodes(session);
2596 if (err) {
2597 pr_err("Failed setup nodes\n");
2598 goto out;
2599 }
2600
2601 err = setup_callchain(session->evlist);
2602 if (err)
2603 goto out_session;
2604
2605 if (symbol__init(&session->header.env) < 0)
2606 goto out_session;
2607
2608 /* No pipe support at the moment. */
2609 if (perf_data_file__is_pipe(session->file)) {
2610 pr_debug("No pipe support at the moment.\n");
2611 goto out_session;
2612 }
2613
2614 if (c2c.use_stdio)
2615 use_browser = 0;
2616 else
2617 use_browser = 1;
2618
2619 setup_browser(false);
2620
2621 err = perf_session__process_events(session);
2622 if (err) {
2623 pr_err("failed to process sample\n");
2624 goto out_session;
2625 }
2626
2627 c2c_hists__reinit(&c2c.hists,
2628 "cl_idx,"
2629 "dcacheline,"
2630 "tot_recs,"
2631 "percent_hitm,"
2632 "tot_hitm,lcl_hitm,rmt_hitm,"
2633 "stores,stores_l1hit,stores_l1miss,"
2634 "dram_lcl,dram_rmt,"
2635 "ld_llcmiss,"
2636 "tot_loads,"
2637 "ld_fbhit,ld_l1hit,ld_l2hit,"
2638 "ld_lclhit,ld_rmthit",
2639 c2c.display == DISPLAY_TOT ? "tot_hitm" :
2640 c2c.display == DISPLAY_LCL ? "lcl_hitm" : "rmt_hitm"
2641 );
2642
2643 ui_progress__init(&prog, c2c.hists.hists.nr_entries, "Sorting...");
2644
2645 hists__collapse_resort(&c2c.hists.hists, NULL);
2646 hists__output_resort_cb(&c2c.hists.hists, &prog, resort_hitm_cb);
2647 hists__iterate_cb(&c2c.hists.hists, resort_cl_cb);
2648
2649 ui_progress__finish();
2650
2651 ui_quirks();
2652
2653 perf_c2c_display(session);
2654
2655 out_session:
2656 perf_session__delete(session);
2657 out:
2658 return err;
2659 }
2660
2661 static int parse_record_events(const struct option *opt,
2662 const char *str, int unset __maybe_unused)
2663 {
2664 bool *event_set = (bool *) opt->value;
2665
2666 *event_set = true;
2667 return perf_mem_events__parse(str);
2668 }
2669
2670
2671 static const char * const __usage_record[] = {
2672 "perf c2c record [<options>] [<command>]",
2673 "perf c2c record [<options>] -- <command> [<options>]",
2674 NULL
2675 };
2676
2677 static const char * const *record_mem_usage = __usage_record;
2678
2679 static int perf_c2c__record(int argc, const char **argv)
2680 {
2681 int rec_argc, i = 0, j;
2682 const char **rec_argv;
2683 int ret;
2684 bool all_user = false, all_kernel = false;
2685 bool event_set = false;
2686 struct option options[] = {
2687 OPT_CALLBACK('e', "event", &event_set, "event",
2688 "event selector. Use 'perf mem record -e list' to list available events",
2689 parse_record_events),
2690 OPT_BOOLEAN('u', "all-user", &all_user, "collect only user level data"),
2691 OPT_BOOLEAN('k', "all-kernel", &all_kernel, "collect only kernel level data"),
2692 OPT_UINTEGER('l', "ldlat", &perf_mem_events__loads_ldlat, "setup mem-loads latency"),
2693 OPT_PARENT(c2c_options),
2694 OPT_END()
2695 };
2696
2697 if (perf_mem_events__init()) {
2698 pr_err("failed: memory events not supported\n");
2699 return -1;
2700 }
2701
2702 argc = parse_options(argc, argv, options, record_mem_usage,
2703 PARSE_OPT_KEEP_UNKNOWN);
2704
2705 rec_argc = argc + 10; /* max number of arguments */
2706 rec_argv = calloc(rec_argc + 1, sizeof(char *));
2707 if (!rec_argv)
2708 return -1;
2709
2710 rec_argv[i++] = "record";
2711
2712 if (!event_set) {
2713 perf_mem_events[PERF_MEM_EVENTS__LOAD].record = true;
2714 perf_mem_events[PERF_MEM_EVENTS__STORE].record = true;
2715 }
2716
2717 if (perf_mem_events[PERF_MEM_EVENTS__LOAD].record)
2718 rec_argv[i++] = "-W";
2719
2720 rec_argv[i++] = "-d";
2721 rec_argv[i++] = "--sample-cpu";
2722
2723 for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) {
2724 if (!perf_mem_events[j].record)
2725 continue;
2726
2727 if (!perf_mem_events[j].supported) {
2728 pr_err("failed: event '%s' not supported\n",
2729 perf_mem_events[j].name);
2730 return -1;
2731 }
2732
2733 rec_argv[i++] = "-e";
2734 rec_argv[i++] = perf_mem_events__name(j);
2735 };
2736
2737 if (all_user)
2738 rec_argv[i++] = "--all-user";
2739
2740 if (all_kernel)
2741 rec_argv[i++] = "--all-kernel";
2742
2743 for (j = 0; j < argc; j++, i++)
2744 rec_argv[i] = argv[j];
2745
2746 if (verbose > 0) {
2747 pr_debug("calling: ");
2748
2749 j = 0;
2750
2751 while (rec_argv[j]) {
2752 pr_debug("%s ", rec_argv[j]);
2753 j++;
2754 }
2755 pr_debug("\n");
2756 }
2757
2758 ret = cmd_record(i, rec_argv, NULL);
2759 free(rec_argv);
2760 return ret;
2761 }
2762
2763 int cmd_c2c(int argc, const char **argv, const char *prefix __maybe_unused)
2764 {
2765 argc = parse_options(argc, argv, c2c_options, c2c_usage,
2766 PARSE_OPT_STOP_AT_NON_OPTION);
2767
2768 if (!argc)
2769 usage_with_options(c2c_usage, c2c_options);
2770
2771 if (!strncmp(argv[0], "rec", 3)) {
2772 return perf_c2c__record(argc, argv);
2773 } else if (!strncmp(argv[0], "rep", 3)) {
2774 return perf_c2c__report(argc, argv);
2775 } else {
2776 usage_with_options(c2c_usage, c2c_options);
2777 }
2778
2779 return 0;
2780 }
Linux with added FPC-III support