1#define _XOPEN_SOURCE 500
2#define _GNU_SOURCE
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34#include <stdio.h>
35#include <stdlib.h>
36#include <errno.h>
37#include <string.h>
38#include <ctype.h>
39#include <unistd.h>
40#include <stdarg.h>
41#include <libgen.h>
42#include <limits.h>
43#include <dirent.h>
44#include <sys/time.h>
45#include <sys/resource.h>
46#include <ftw.h>
47#include <sys/stat.h>
48#include <linux/list.h>
49#include "jsmn.h"
50#include "json.h"
51#include "jevents.h"
52
53int verbose;
54char *prog;
55
56int eprintf(int level, int var, const char *fmt, ...)
57{
58
59 int ret;
60 va_list args;
61
62 if (var < level)
63 return 0;
64
65 va_start(args, fmt);
66
67 ret = vfprintf(stderr, fmt, args);
68
69 va_end(args);
70
71 return ret;
72}
73
74__attribute__((weak)) char *get_cpu_str(void)
75{
76 return NULL;
77}
78
79static void addfield(char *map, char **dst, const char *sep,
80 const char *a, jsmntok_t *bt)
81{
82 unsigned int len = strlen(a) + 1 + strlen(sep);
83 int olen = *dst ? strlen(*dst) : 0;
84 int blen = bt ? json_len(bt) : 0;
85 char *out;
86
87 out = realloc(*dst, len + olen + blen);
88 if (!out) {
89
90 return;
91 }
92 *dst = out;
93
94 if (!olen)
95 *(*dst) = 0;
96 else
97 strcat(*dst, sep);
98 strcat(*dst, a);
99 if (bt)
100 strncat(*dst, map + bt->start, blen);
101}
102
103static void fixname(char *s)
104{
105 for (; *s; s++)
106 *s = tolower(*s);
107}
108
109static void fixdesc(char *s)
110{
111 char *e = s + strlen(s);
112
113
114 --e;
115 while (e >= s && isspace(*e))
116 --e;
117 if (*e == '.')
118 *e = 0;
119}
120
121
122static char *fixregex(char *s)
123{
124 int len = 0;
125 int esc_count = 0;
126 char *fixed = NULL;
127 char *p, *q;
128
129
130 for (p = s; *p; p++) {
131 ++len;
132 if (*p == '\\')
133 ++esc_count;
134 }
135
136 if (esc_count == 0)
137 return s;
138
139
140 fixed = (char *) malloc(len + 1);
141 if (!fixed)
142 return NULL;
143
144
145 q = fixed;
146 for (p = s; *p; p++) {
147 if (*p == '\\') {
148 *q = '\\';
149 ++q;
150 }
151 *q = *p;
152 ++q;
153 }
154 *q = '\0';
155 return fixed;
156}
157
158static struct msrmap {
159 const char *num;
160 const char *pname;
161} msrmap[] = {
162 { "0x3F6", "ldlat=" },
163 { "0x1A6", "offcore_rsp=" },
164 { "0x1A7", "offcore_rsp=" },
165 { "0x3F7", "frontend=" },
166 { NULL, NULL }
167};
168
169static struct field {
170 const char *field;
171 const char *kernel;
172} fields[] = {
173 { "UMask", "umask=" },
174 { "CounterMask", "cmask=" },
175 { "Invert", "inv=" },
176 { "AnyThread", "any=" },
177 { "EdgeDetect", "edge=" },
178 { "SampleAfterValue", "period=" },
179 { "FCMask", "fc_mask=" },
180 { "PortMask", "ch_mask=" },
181 { NULL, NULL }
182};
183
184static void cut_comma(char *map, jsmntok_t *newval)
185{
186 int i;
187
188
189 for (i = newval->start; i < newval->end; i++) {
190 if (map[i] == ',')
191 newval->end = i;
192 }
193}
194
195static int match_field(char *map, jsmntok_t *field, int nz,
196 char **event, jsmntok_t *val)
197{
198 struct field *f;
199 jsmntok_t newval = *val;
200
201 for (f = fields; f->field; f++)
202 if (json_streq(map, field, f->field) && nz) {
203 cut_comma(map, &newval);
204 addfield(map, event, ",", f->kernel, &newval);
205 return 1;
206 }
207 return 0;
208}
209
210static struct msrmap *lookup_msr(char *map, jsmntok_t *val)
211{
212 jsmntok_t newval = *val;
213 static bool warned;
214 int i;
215
216 cut_comma(map, &newval);
217 for (i = 0; msrmap[i].num; i++)
218 if (json_streq(map, &newval, msrmap[i].num))
219 return &msrmap[i];
220 if (!warned) {
221 warned = true;
222 pr_err("%s: Unknown MSR in event file %.*s\n", prog,
223 json_len(val), map + val->start);
224 }
225 return NULL;
226}
227
228static struct map {
229 const char *json;
230 const char *perf;
231} unit_to_pmu[] = {
232 { "CBO", "uncore_cbox" },
233 { "QPI LL", "uncore_qpi" },
234 { "SBO", "uncore_sbox" },
235 { "iMPH-U", "uncore_arb" },
236 { "CPU-M-CF", "cpum_cf" },
237 { "CPU-M-SF", "cpum_sf" },
238 { "UPI LL", "uncore_upi" },
239 { "hisi_sccl,ddrc", "hisi_sccl,ddrc" },
240 { "hisi_sccl,hha", "hisi_sccl,hha" },
241 { "hisi_sccl,l3c", "hisi_sccl,l3c" },
242 {}
243};
244
245static const char *field_to_perf(struct map *table, char *map, jsmntok_t *val)
246{
247 int i;
248
249 for (i = 0; table[i].json; i++) {
250 if (json_streq(map, val, table[i].json))
251 return table[i].perf;
252 }
253 return NULL;
254}
255
256#define EXPECT(e, t, m) do { if (!(e)) { \
257 jsmntok_t *loc = (t); \
258 if (!(t)->start && (t) > tokens) \
259 loc = (t) - 1; \
260 pr_err("%s:%d: " m ", got %s\n", fn, \
261 json_line(map, loc), \
262 json_name(t)); \
263 err = -EIO; \
264 goto out_free; \
265} } while (0)
266
267static char *topic;
268
269static char *get_topic(void)
270{
271 char *tp;
272 int i;
273
274
275 i = asprintf(&tp, "%s", topic);
276 if (i < 0) {
277 pr_info("%s: asprintf() error %s\n", prog);
278 return NULL;
279 }
280
281 for (i = 0; i < (int) strlen(tp); i++) {
282 char c = tp[i];
283
284 if (c == '-')
285 tp[i] = ' ';
286 else if (c == '.') {
287 tp[i] = '\0';
288 break;
289 }
290 }
291
292 return tp;
293}
294
295static int add_topic(char *bname)
296{
297 free(topic);
298 topic = strdup(bname);
299 if (!topic) {
300 pr_info("%s: strdup() error %s for file %s\n", prog,
301 strerror(errno), bname);
302 return -ENOMEM;
303 }
304 return 0;
305}
306
307struct perf_entry_data {
308 FILE *outfp;
309 char *topic;
310};
311
312static int close_table;
313
314static void print_events_table_prefix(FILE *fp, const char *tblname)
315{
316 fprintf(fp, "struct pmu_event %s[] = {\n", tblname);
317 close_table = 1;
318}
319
320static int print_events_table_entry(void *data, char *name, char *event,
321 char *desc, char *long_desc,
322 char *pmu, char *unit, char *perpkg,
323 char *metric_expr,
324 char *metric_name, char *metric_group)
325{
326 struct perf_entry_data *pd = data;
327 FILE *outfp = pd->outfp;
328 char *topic = pd->topic;
329
330
331
332
333
334 fprintf(outfp, "{\n");
335
336 if (name)
337 fprintf(outfp, "\t.name = \"%s\",\n", name);
338 if (event)
339 fprintf(outfp, "\t.event = \"%s\",\n", event);
340 fprintf(outfp, "\t.desc = \"%s\",\n", desc);
341 fprintf(outfp, "\t.topic = \"%s\",\n", topic);
342 if (long_desc && long_desc[0])
343 fprintf(outfp, "\t.long_desc = \"%s\",\n", long_desc);
344 if (pmu)
345 fprintf(outfp, "\t.pmu = \"%s\",\n", pmu);
346 if (unit)
347 fprintf(outfp, "\t.unit = \"%s\",\n", unit);
348 if (perpkg)
349 fprintf(outfp, "\t.perpkg = \"%s\",\n", perpkg);
350 if (metric_expr)
351 fprintf(outfp, "\t.metric_expr = \"%s\",\n", metric_expr);
352 if (metric_name)
353 fprintf(outfp, "\t.metric_name = \"%s\",\n", metric_name);
354 if (metric_group)
355 fprintf(outfp, "\t.metric_group = \"%s\",\n", metric_group);
356 fprintf(outfp, "},\n");
357
358 return 0;
359}
360
361struct event_struct {
362 struct list_head list;
363 char *name;
364 char *event;
365 char *desc;
366 char *long_desc;
367 char *pmu;
368 char *unit;
369 char *perpkg;
370 char *metric_expr;
371 char *metric_name;
372 char *metric_group;
373};
374
375#define ADD_EVENT_FIELD(field) do { if (field) { \
376 es->field = strdup(field); \
377 if (!es->field) \
378 goto out_free; \
379} } while (0)
380
381#define FREE_EVENT_FIELD(field) free(es->field)
382
383#define TRY_FIXUP_FIELD(field) do { if (es->field && !*field) {\
384 *field = strdup(es->field); \
385 if (!*field) \
386 return -ENOMEM; \
387} } while (0)
388
389#define FOR_ALL_EVENT_STRUCT_FIELDS(op) do { \
390 op(name); \
391 op(event); \
392 op(desc); \
393 op(long_desc); \
394 op(pmu); \
395 op(unit); \
396 op(perpkg); \
397 op(metric_expr); \
398 op(metric_name); \
399 op(metric_group); \
400} while (0)
401
402static LIST_HEAD(arch_std_events);
403
404static void free_arch_std_events(void)
405{
406 struct event_struct *es, *next;
407
408 list_for_each_entry_safe(es, next, &arch_std_events, list) {
409 FOR_ALL_EVENT_STRUCT_FIELDS(FREE_EVENT_FIELD);
410 list_del_init(&es->list);
411 free(es);
412 }
413}
414
415static int save_arch_std_events(void *data, char *name, char *event,
416 char *desc, char *long_desc, char *pmu,
417 char *unit, char *perpkg, char *metric_expr,
418 char *metric_name, char *metric_group)
419{
420 struct event_struct *es;
421
422 es = malloc(sizeof(*es));
423 if (!es)
424 return -ENOMEM;
425 memset(es, 0, sizeof(*es));
426 FOR_ALL_EVENT_STRUCT_FIELDS(ADD_EVENT_FIELD);
427 list_add_tail(&es->list, &arch_std_events);
428 return 0;
429out_free:
430 FOR_ALL_EVENT_STRUCT_FIELDS(FREE_EVENT_FIELD);
431 free(es);
432 return -ENOMEM;
433}
434
435static void print_events_table_suffix(FILE *outfp)
436{
437 fprintf(outfp, "{\n");
438
439 fprintf(outfp, "\t.name = 0,\n");
440 fprintf(outfp, "\t.event = 0,\n");
441 fprintf(outfp, "\t.desc = 0,\n");
442
443 fprintf(outfp, "},\n");
444 fprintf(outfp, "};\n");
445 close_table = 0;
446}
447
448static struct fixed {
449 const char *name;
450 const char *event;
451} fixed[] = {
452 { "inst_retired.any", "event=0xc0" },
453 { "inst_retired.any_p", "event=0xc0" },
454 { "cpu_clk_unhalted.ref", "event=0x0,umask=0x03" },
455 { "cpu_clk_unhalted.thread", "event=0x3c" },
456 { "cpu_clk_unhalted.core", "event=0x3c" },
457 { "cpu_clk_unhalted.thread_any", "event=0x3c,any=1" },
458 { NULL, NULL},
459};
460
461
462
463
464static char *real_event(const char *name, char *event)
465{
466 int i;
467
468 if (!name)
469 return NULL;
470
471 for (i = 0; fixed[i].name; i++)
472 if (!strcasecmp(name, fixed[i].name))
473 return (char *)fixed[i].event;
474 return event;
475}
476
477static int
478try_fixup(const char *fn, char *arch_std, char **event, char **desc,
479 char **name, char **long_desc, char **pmu, char **filter,
480 char **perpkg, char **unit, char **metric_expr, char **metric_name,
481 char **metric_group, unsigned long long eventcode)
482{
483
484 struct event_struct *es;
485
486 list_for_each_entry(es, &arch_std_events, list) {
487 if (!strcmp(arch_std, es->name)) {
488 if (!eventcode && es->event) {
489
490 free(*event);
491 *event = NULL;
492 }
493 FOR_ALL_EVENT_STRUCT_FIELDS(TRY_FIXUP_FIELD);
494 return 0;
495 }
496 }
497
498 pr_err("%s: could not find matching %s for %s\n",
499 prog, arch_std, fn);
500 return -1;
501}
502
503
504int json_events(const char *fn,
505 int (*func)(void *data, char *name, char *event, char *desc,
506 char *long_desc,
507 char *pmu, char *unit, char *perpkg,
508 char *metric_expr,
509 char *metric_name, char *metric_group),
510 void *data)
511{
512 int err;
513 size_t size;
514 jsmntok_t *tokens, *tok;
515 int i, j, len;
516 char *map;
517 char buf[128];
518
519 if (!fn)
520 return -ENOENT;
521
522 tokens = parse_json(fn, &map, &size, &len);
523 if (!tokens)
524 return -EIO;
525 EXPECT(tokens->type == JSMN_ARRAY, tokens, "expected top level array");
526 tok = tokens + 1;
527 for (i = 0; i < tokens->size; i++) {
528 char *event = NULL, *desc = NULL, *name = NULL;
529 char *long_desc = NULL;
530 char *extra_desc = NULL;
531 char *pmu = NULL;
532 char *filter = NULL;
533 char *perpkg = NULL;
534 char *unit = NULL;
535 char *metric_expr = NULL;
536 char *metric_name = NULL;
537 char *metric_group = NULL;
538 char *arch_std = NULL;
539 unsigned long long eventcode = 0;
540 struct msrmap *msr = NULL;
541 jsmntok_t *msrval = NULL;
542 jsmntok_t *precise = NULL;
543 jsmntok_t *obj = tok++;
544
545 EXPECT(obj->type == JSMN_OBJECT, obj, "expected object");
546 for (j = 0; j < obj->size; j += 2) {
547 jsmntok_t *field, *val;
548 int nz;
549 char *s;
550
551 field = tok + j;
552 EXPECT(field->type == JSMN_STRING, tok + j,
553 "Expected field name");
554 val = tok + j + 1;
555 EXPECT(val->type == JSMN_STRING, tok + j + 1,
556 "Expected string value");
557
558 nz = !json_streq(map, val, "0");
559 if (match_field(map, field, nz, &event, val)) {
560
561 } else if (json_streq(map, field, "EventCode")) {
562 char *code = NULL;
563 addfield(map, &code, "", "", val);
564 eventcode |= strtoul(code, NULL, 0);
565 free(code);
566 } else if (json_streq(map, field, "ExtSel")) {
567 char *code = NULL;
568 addfield(map, &code, "", "", val);
569 eventcode |= strtoul(code, NULL, 0) << 21;
570 free(code);
571 } else if (json_streq(map, field, "EventName")) {
572 addfield(map, &name, "", "", val);
573 } else if (json_streq(map, field, "BriefDescription")) {
574 addfield(map, &desc, "", "", val);
575 fixdesc(desc);
576 } else if (json_streq(map, field,
577 "PublicDescription")) {
578 addfield(map, &long_desc, "", "", val);
579 fixdesc(long_desc);
580 } else if (json_streq(map, field, "PEBS") && nz) {
581 precise = val;
582 } else if (json_streq(map, field, "MSRIndex") && nz) {
583 msr = lookup_msr(map, val);
584 } else if (json_streq(map, field, "MSRValue")) {
585 msrval = val;
586 } else if (json_streq(map, field, "Errata") &&
587 !json_streq(map, val, "null")) {
588 addfield(map, &extra_desc, ". ",
589 " Spec update: ", val);
590 } else if (json_streq(map, field, "Data_LA") && nz) {
591 addfield(map, &extra_desc, ". ",
592 " Supports address when precise",
593 NULL);
594 } else if (json_streq(map, field, "Unit")) {
595 const char *ppmu;
596
597 ppmu = field_to_perf(unit_to_pmu, map, val);
598 if (ppmu) {
599 pmu = strdup(ppmu);
600 } else {
601 if (!pmu)
602 pmu = strdup("uncore_");
603 addfield(map, &pmu, "", "", val);
604 for (s = pmu; *s; s++)
605 *s = tolower(*s);
606 }
607 addfield(map, &desc, ". ", "Unit: ", NULL);
608 addfield(map, &desc, "", pmu, NULL);
609 addfield(map, &desc, "", " ", NULL);
610 } else if (json_streq(map, field, "Filter")) {
611 addfield(map, &filter, "", "", val);
612 } else if (json_streq(map, field, "ScaleUnit")) {
613 addfield(map, &unit, "", "", val);
614 } else if (json_streq(map, field, "PerPkg")) {
615 addfield(map, &perpkg, "", "", val);
616 } else if (json_streq(map, field, "MetricName")) {
617 addfield(map, &metric_name, "", "", val);
618 } else if (json_streq(map, field, "MetricGroup")) {
619 addfield(map, &metric_group, "", "", val);
620 } else if (json_streq(map, field, "MetricExpr")) {
621 addfield(map, &metric_expr, "", "", val);
622 for (s = metric_expr; *s; s++)
623 *s = tolower(*s);
624 } else if (json_streq(map, field, "ArchStdEvent")) {
625 addfield(map, &arch_std, "", "", val);
626 for (s = arch_std; *s; s++)
627 *s = tolower(*s);
628 }
629
630 }
631 if (precise && desc && !strstr(desc, "(Precise Event)")) {
632 if (json_streq(map, precise, "2"))
633 addfield(map, &extra_desc, " ",
634 "(Must be precise)", NULL);
635 else
636 addfield(map, &extra_desc, " ",
637 "(Precise event)", NULL);
638 }
639 snprintf(buf, sizeof buf, "event=%#llx", eventcode);
640 addfield(map, &event, ",", buf, NULL);
641 if (desc && extra_desc)
642 addfield(map, &desc, " ", extra_desc, NULL);
643 if (long_desc && extra_desc)
644 addfield(map, &long_desc, " ", extra_desc, NULL);
645 if (filter)
646 addfield(map, &event, ",", filter, NULL);
647 if (msr != NULL)
648 addfield(map, &event, ",", msr->pname, msrval);
649 if (name)
650 fixname(name);
651
652 if (arch_std) {
653
654
655
656
657 err = try_fixup(fn, arch_std, &event, &desc, &name,
658 &long_desc, &pmu, &filter, &perpkg,
659 &unit, &metric_expr, &metric_name,
660 &metric_group, eventcode);
661 if (err)
662 goto free_strings;
663 }
664 err = func(data, name, real_event(name, event), desc, long_desc,
665 pmu, unit, perpkg, metric_expr, metric_name, metric_group);
666free_strings:
667 free(event);
668 free(desc);
669 free(name);
670 free(long_desc);
671 free(extra_desc);
672 free(pmu);
673 free(filter);
674 free(perpkg);
675 free(unit);
676 free(metric_expr);
677 free(metric_name);
678 free(metric_group);
679 free(arch_std);
680
681 if (err)
682 break;
683 tok += j;
684 }
685 EXPECT(tok - tokens == len, tok, "unexpected objects at end");
686 err = 0;
687out_free:
688 free_json(map, size, tokens);
689 return err;
690}
691
692static char *file_name_to_table_name(char *fname)
693{
694 unsigned int i;
695 int n;
696 int c;
697 char *tblname;
698
699
700
701
702
703
704 n = asprintf(&tblname, "pme_%s", fname);
705 if (n < 0) {
706 pr_info("%s: asprintf() error %s for file %s\n", prog,
707 strerror(errno), fname);
708 return NULL;
709 }
710
711 for (i = 0; i < strlen(tblname); i++) {
712 c = tblname[i];
713
714 if (c == '-' || c == '/')
715 tblname[i] = '_';
716 else if (c == '.') {
717 tblname[i] = '\0';
718 break;
719 } else if (!isalnum(c) && c != '_') {
720 pr_err("%s: Invalid character '%c' in file name %s\n",
721 prog, c, basename(fname));
722 free(tblname);
723 tblname = NULL;
724 break;
725 }
726 }
727
728 return tblname;
729}
730
731static void print_mapping_table_prefix(FILE *outfp)
732{
733 fprintf(outfp, "struct pmu_events_map pmu_events_map[] = {\n");
734}
735
736static void print_mapping_table_suffix(FILE *outfp)
737{
738
739
740
741 fprintf(outfp, "{\n");
742 fprintf(outfp, "\t.cpuid = 0,\n");
743 fprintf(outfp, "\t.version = 0,\n");
744 fprintf(outfp, "\t.type = 0,\n");
745 fprintf(outfp, "\t.table = 0,\n");
746 fprintf(outfp, "},\n");
747
748
749 fprintf(outfp, "};\n");
750}
751
752static int process_mapfile(FILE *outfp, char *fpath)
753{
754 int n = 16384;
755 FILE *mapfp;
756 char *save = NULL;
757 char *line, *p;
758 int line_num;
759 char *tblname;
760
761 pr_info("%s: Processing mapfile %s\n", prog, fpath);
762
763 line = malloc(n);
764 if (!line)
765 return -1;
766
767 mapfp = fopen(fpath, "r");
768 if (!mapfp) {
769 pr_info("%s: Error %s opening %s\n", prog, strerror(errno),
770 fpath);
771 return -1;
772 }
773
774 print_mapping_table_prefix(outfp);
775
776
777 p = fgets(line, n, mapfp);
778 if (!p)
779 goto out;
780
781 line_num = 1;
782 while (1) {
783 char *cpuid, *version, *type, *fname;
784
785 line_num++;
786 p = fgets(line, n, mapfp);
787 if (!p)
788 break;
789
790 if (line[0] == '#' || line[0] == '\n')
791 continue;
792
793 if (line[strlen(line)-1] != '\n') {
794
795 pr_info("%s: Mapfile %s: line %d too long, aborting\n",
796 prog, fpath, line_num);
797 return -1;
798 }
799 line[strlen(line)-1] = '\0';
800
801 cpuid = fixregex(strtok_r(p, ",", &save));
802 version = strtok_r(NULL, ",", &save);
803 fname = strtok_r(NULL, ",", &save);
804 type = strtok_r(NULL, ",", &save);
805
806 tblname = file_name_to_table_name(fname);
807 fprintf(outfp, "{\n");
808 fprintf(outfp, "\t.cpuid = \"%s\",\n", cpuid);
809 fprintf(outfp, "\t.version = \"%s\",\n", version);
810 fprintf(outfp, "\t.type = \"%s\",\n", type);
811
812
813
814
815
816
817
818
819
820
821 fprintf(outfp, "\t.table = %s\n", tblname);
822 fprintf(outfp, "},\n");
823 }
824
825out:
826 print_mapping_table_suffix(outfp);
827 return 0;
828}
829
830
831
832
833
834
835static void create_empty_mapping(const char *output_file)
836{
837 FILE *outfp;
838
839 pr_info("%s: Creating empty pmu_events_map[] table\n", prog);
840
841
842 outfp = fopen(output_file, "w");
843 if (!outfp) {
844 perror("fopen()");
845 _Exit(1);
846 }
847
848 fprintf(outfp, "#include \"pmu-events/pmu-events.h\"\n");
849 print_mapping_table_prefix(outfp);
850 print_mapping_table_suffix(outfp);
851 fclose(outfp);
852}
853
854static int get_maxfds(void)
855{
856 struct rlimit rlim;
857
858 if (getrlimit(RLIMIT_NOFILE, &rlim) == 0)
859 return min((int)rlim.rlim_max / 2, 512);
860
861 return 512;
862}
863
864
865
866
867
868static FILE *eventsfp;
869static char *mapfile;
870
871static int is_leaf_dir(const char *fpath)
872{
873 DIR *d;
874 struct dirent *dir;
875 int res = 1;
876
877 d = opendir(fpath);
878 if (!d)
879 return 0;
880
881 while ((dir = readdir(d)) != NULL) {
882 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
883 continue;
884
885 if (dir->d_type == DT_DIR) {
886 res = 0;
887 break;
888 } else if (dir->d_type == DT_UNKNOWN) {
889 char path[PATH_MAX];
890 struct stat st;
891
892 sprintf(path, "%s/%s", fpath, dir->d_name);
893 if (stat(path, &st))
894 break;
895
896 if (S_ISDIR(st.st_mode)) {
897 res = 0;
898 break;
899 }
900 }
901 }
902
903 closedir(d);
904
905 return res;
906}
907
908static int is_json_file(const char *name)
909{
910 const char *suffix;
911
912 if (strlen(name) < 5)
913 return 0;
914
915 suffix = name + strlen(name) - 5;
916
917 if (strncmp(suffix, ".json", 5) == 0)
918 return 1;
919 return 0;
920}
921
922static int preprocess_arch_std_files(const char *fpath, const struct stat *sb,
923 int typeflag, struct FTW *ftwbuf)
924{
925 int level = ftwbuf->level;
926 int is_file = typeflag == FTW_F;
927
928 if (level == 1 && is_file && is_json_file(fpath))
929 return json_events(fpath, save_arch_std_events, (void *)sb);
930
931 return 0;
932}
933
934static int process_one_file(const char *fpath, const struct stat *sb,
935 int typeflag, struct FTW *ftwbuf)
936{
937 char *tblname, *bname;
938 int is_dir = typeflag == FTW_D;
939 int is_file = typeflag == FTW_F;
940 int level = ftwbuf->level;
941 int err = 0;
942
943 if (level == 2 && is_dir) {
944
945
946
947
948
949 bname = (char *) fpath + ftwbuf->base - 2;
950 for (;;) {
951 if (*bname == '/')
952 break;
953 bname--;
954 }
955 bname++;
956 } else
957 bname = (char *) fpath + ftwbuf->base;
958
959 pr_debug("%s %d %7jd %-20s %s\n",
960 is_file ? "f" : is_dir ? "d" : "x",
961 level, sb->st_size, bname, fpath);
962
963
964 if (level == 0 || level > 3)
965 return 0;
966
967
968
969 if ((level == 1 && is_dir && is_leaf_dir(fpath)) ||
970 (level == 2 && is_dir)) {
971 if (close_table)
972 print_events_table_suffix(eventsfp);
973
974
975
976
977
978
979 tblname = file_name_to_table_name(bname);
980 if (!tblname) {
981 pr_info("%s: Error determining table name for %s\n", prog,
982 bname);
983 return -1;
984 }
985
986 print_events_table_prefix(eventsfp, tblname);
987 return 0;
988 }
989
990
991
992
993
994
995
996 if (level == 1 && is_file) {
997 if (!strcmp(bname, "mapfile.csv")) {
998 mapfile = strdup(fpath);
999 return 0;
1000 }
1001
1002 pr_info("%s: Ignoring file %s\n", prog, fpath);
1003 return 0;
1004 }
1005
1006
1007
1008
1009
1010 if (is_file) {
1011 if (!is_json_file(bname)) {
1012 pr_info("%s: Ignoring file without .json suffix %s\n", prog,
1013 fpath);
1014 return 0;
1015 }
1016 }
1017
1018 if (level > 1 && add_topic(bname))
1019 return -ENOMEM;
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033 if (is_file) {
1034 struct perf_entry_data data = {
1035 .topic = get_topic(),
1036 .outfp = eventsfp,
1037 };
1038
1039 err = json_events(fpath, print_events_table_entry, &data);
1040
1041 free(data.topic);
1042 }
1043
1044 return err;
1045}
1046
1047#ifndef PATH_MAX
1048#define PATH_MAX 4096
1049#endif
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063int main(int argc, char *argv[])
1064{
1065 int rc;
1066 int maxfds;
1067 char ldirname[PATH_MAX];
1068
1069 const char *arch;
1070 const char *output_file;
1071 const char *start_dirname;
1072 struct stat stbuf;
1073
1074 prog = basename(argv[0]);
1075 if (argc < 4) {
1076 pr_err("Usage: %s <arch> <starting_dir> <output_file>\n", prog);
1077 return 1;
1078 }
1079
1080 arch = argv[1];
1081 start_dirname = argv[2];
1082 output_file = argv[3];
1083
1084 if (argc > 4)
1085 verbose = atoi(argv[4]);
1086
1087 eventsfp = fopen(output_file, "w");
1088 if (!eventsfp) {
1089 pr_err("%s Unable to create required file %s (%s)\n",
1090 prog, output_file, strerror(errno));
1091 return 2;
1092 }
1093
1094 sprintf(ldirname, "%s/%s", start_dirname, arch);
1095
1096
1097 if (stat(ldirname, &stbuf) < 0) {
1098 pr_info("%s: Arch %s has no PMU event lists\n", prog, arch);
1099 goto empty_map;
1100 }
1101
1102
1103 fprintf(eventsfp, "#include \"pmu-events/pmu-events.h\"\n");
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115 maxfds = get_maxfds();
1116 mapfile = NULL;
1117 rc = nftw(ldirname, preprocess_arch_std_files, maxfds, 0);
1118 if (rc && verbose) {
1119 pr_info("%s: Error preprocessing arch standard files %s\n",
1120 prog, ldirname);
1121 goto empty_map;
1122 } else if (rc < 0) {
1123
1124 free_arch_std_events();
1125 return 1;
1126 } else if (rc) {
1127 goto empty_map;
1128 }
1129
1130 rc = nftw(ldirname, process_one_file, maxfds, 0);
1131 if (rc && verbose) {
1132 pr_info("%s: Error walking file tree %s\n", prog, ldirname);
1133 goto empty_map;
1134 } else if (rc < 0) {
1135
1136 free_arch_std_events();
1137 return 1;
1138 } else if (rc) {
1139 goto empty_map;
1140 }
1141
1142 if (close_table)
1143 print_events_table_suffix(eventsfp);
1144
1145 if (!mapfile) {
1146 pr_info("%s: No CPU->JSON mapping?\n", prog);
1147 goto empty_map;
1148 }
1149
1150 if (process_mapfile(eventsfp, mapfile)) {
1151 pr_info("%s: Error processing mapfile %s\n", prog, mapfile);
1152
1153 return 1;
1154 }
1155
1156 return 0;
1157
1158empty_map:
1159 fclose(eventsfp);
1160 create_empty_mapping(output_file);
1161 free_arch_std_events();
1162 return 0;
1163}
1164