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 "pmu-events.h"
52
53int verbose;
54char *prog;
55
56struct json_event {
57 char *name;
58 char *compat;
59 char *event;
60 char *desc;
61 char *long_desc;
62 char *pmu;
63 char *unit;
64 char *perpkg;
65 char *aggr_mode;
66 char *metric_expr;
67 char *metric_name;
68 char *metric_group;
69 char *deprecated;
70 char *metric_constraint;
71};
72
73enum aggr_mode_class convert(const char *aggr_mode)
74{
75 if (!strcmp(aggr_mode, "PerCore"))
76 return PerCore;
77 else if (!strcmp(aggr_mode, "PerChip"))
78 return PerChip;
79
80 pr_err("%s: Wrong AggregationMode value '%s'\n", prog, aggr_mode);
81 return -1;
82}
83
84typedef int (*func)(void *data, struct json_event *je);
85
86static LIST_HEAD(sys_event_tables);
87
88struct sys_event_table {
89 struct list_head list;
90 char *soc_id;
91};
92
93static void free_sys_event_tables(void)
94{
95 struct sys_event_table *et, *next;
96
97 list_for_each_entry_safe(et, next, &sys_event_tables, list) {
98 free(et->soc_id);
99 free(et);
100 }
101}
102
103int eprintf(int level, int var, const char *fmt, ...)
104{
105
106 int ret;
107 va_list args;
108
109 if (var < level)
110 return 0;
111
112 va_start(args, fmt);
113
114 ret = vfprintf(stderr, fmt, args);
115
116 va_end(args);
117
118 return ret;
119}
120
121static void addfield(char *map, char **dst, const char *sep,
122 const char *a, jsmntok_t *bt)
123{
124 unsigned int len = strlen(a) + 1 + strlen(sep);
125 int olen = *dst ? strlen(*dst) : 0;
126 int blen = bt ? json_len(bt) : 0;
127 char *out;
128
129 out = realloc(*dst, len + olen + blen);
130 if (!out) {
131
132 return;
133 }
134 *dst = out;
135
136 if (!olen)
137 *(*dst) = 0;
138 else
139 strcat(*dst, sep);
140 strcat(*dst, a);
141 if (bt)
142 strncat(*dst, map + bt->start, blen);
143}
144
145static void fixname(char *s)
146{
147 for (; *s; s++)
148 *s = tolower(*s);
149}
150
151static void fixdesc(char *s)
152{
153 char *e = s + strlen(s);
154
155
156 --e;
157 while (e >= s && isspace(*e))
158 --e;
159 if (*e == '.')
160 *e = 0;
161}
162
163
164static char *fixregex(char *s)
165{
166 int len = 0;
167 int esc_count = 0;
168 char *fixed = NULL;
169 char *p, *q;
170
171
172 for (p = s; *p; p++) {
173 ++len;
174 if (*p == '\\')
175 ++esc_count;
176 }
177
178 if (esc_count == 0)
179 return s;
180
181
182 fixed = (char *) malloc(len + esc_count + 1);
183 if (!fixed)
184 return NULL;
185
186
187 q = fixed;
188 for (p = s; *p; p++) {
189 if (*p == '\\') {
190 *q = '\\';
191 ++q;
192 }
193 *q = *p;
194 ++q;
195 }
196 *q = '\0';
197 return fixed;
198}
199
200static struct msrmap {
201 const char *num;
202 const char *pname;
203} msrmap[] = {
204 { "0x3F6", "ldlat=" },
205 { "0x1A6", "offcore_rsp=" },
206 { "0x1A7", "offcore_rsp=" },
207 { "0x3F7", "frontend=" },
208 { NULL, NULL }
209};
210
211static struct field {
212 const char *field;
213 const char *kernel;
214} fields[] = {
215 { "UMask", "umask=" },
216 { "CounterMask", "cmask=" },
217 { "Invert", "inv=" },
218 { "AnyThread", "any=" },
219 { "EdgeDetect", "edge=" },
220 { "SampleAfterValue", "period=" },
221 { "FCMask", "fc_mask=" },
222 { "PortMask", "ch_mask=" },
223 { NULL, NULL }
224};
225
226static void cut_comma(char *map, jsmntok_t *newval)
227{
228 int i;
229
230
231 for (i = newval->start; i < newval->end; i++) {
232 if (map[i] == ',')
233 newval->end = i;
234 }
235}
236
237static int match_field(char *map, jsmntok_t *field, int nz,
238 char **event, jsmntok_t *val)
239{
240 struct field *f;
241 jsmntok_t newval = *val;
242
243 for (f = fields; f->field; f++)
244 if (json_streq(map, field, f->field) && nz) {
245 cut_comma(map, &newval);
246 addfield(map, event, ",", f->kernel, &newval);
247 return 1;
248 }
249 return 0;
250}
251
252static struct msrmap *lookup_msr(char *map, jsmntok_t *val)
253{
254 jsmntok_t newval = *val;
255 static bool warned;
256 int i;
257
258 cut_comma(map, &newval);
259 for (i = 0; msrmap[i].num; i++)
260 if (json_streq(map, &newval, msrmap[i].num))
261 return &msrmap[i];
262 if (!warned) {
263 warned = true;
264 pr_err("%s: Unknown MSR in event file %.*s\n", prog,
265 json_len(val), map + val->start);
266 }
267 return NULL;
268}
269
270static struct map {
271 const char *json;
272 const char *perf;
273} unit_to_pmu[] = {
274 { "CBO", "uncore_cbox" },
275 { "QPI LL", "uncore_qpi" },
276 { "SBO", "uncore_sbox" },
277 { "iMPH-U", "uncore_arb" },
278 { "CPU-M-CF", "cpum_cf" },
279 { "CPU-M-SF", "cpum_sf" },
280 { "UPI LL", "uncore_upi" },
281 { "hisi_sccl,ddrc", "hisi_sccl,ddrc" },
282 { "hisi_sccl,hha", "hisi_sccl,hha" },
283 { "hisi_sccl,l3c", "hisi_sccl,l3c" },
284
285 { "imx8_ddr", "imx8_ddr" },
286 { "L3PMC", "amd_l3" },
287 { "DFPMC", "amd_df" },
288 {}
289};
290
291static const char *field_to_perf(struct map *table, char *map, jsmntok_t *val)
292{
293 int i;
294
295 for (i = 0; table[i].json; i++) {
296 if (json_streq(map, val, table[i].json))
297 return table[i].perf;
298 }
299 return NULL;
300}
301
302#define EXPECT(e, t, m) do { if (!(e)) { \
303 jsmntok_t *loc = (t); \
304 if (!(t)->start && (t) > tokens) \
305 loc = (t) - 1; \
306 pr_err("%s:%d: " m ", got %s\n", fn, \
307 json_line(map, loc), \
308 json_name(t)); \
309 err = -EIO; \
310 goto out_free; \
311} } while (0)
312
313static char *topic;
314
315static char *get_topic(void)
316{
317 char *tp;
318 int i;
319
320
321 i = asprintf(&tp, "%s", topic);
322 if (i < 0) {
323 pr_info("%s: asprintf() error %s\n", prog);
324 return NULL;
325 }
326
327 for (i = 0; i < (int) strlen(tp); i++) {
328 char c = tp[i];
329
330 if (c == '-')
331 tp[i] = ' ';
332 else if (c == '.') {
333 tp[i] = '\0';
334 break;
335 }
336 }
337
338 return tp;
339}
340
341static int add_topic(char *bname)
342{
343 free(topic);
344 topic = strdup(bname);
345 if (!topic) {
346 pr_info("%s: strdup() error %s for file %s\n", prog,
347 strerror(errno), bname);
348 return -ENOMEM;
349 }
350 return 0;
351}
352
353struct perf_entry_data {
354 FILE *outfp;
355 char *topic;
356};
357
358static int close_table;
359
360static void print_events_table_prefix(FILE *fp, const char *tblname)
361{
362 fprintf(fp, "struct pmu_event %s[] = {\n", tblname);
363 close_table = 1;
364}
365
366static int print_events_table_entry(void *data, struct json_event *je)
367{
368 struct perf_entry_data *pd = data;
369 FILE *outfp = pd->outfp;
370 char *topic = pd->topic;
371
372
373
374
375
376 fprintf(outfp, "{\n");
377
378 if (je->name)
379 fprintf(outfp, "\t.name = \"%s\",\n", je->name);
380 if (je->event)
381 fprintf(outfp, "\t.event = \"%s\",\n", je->event);
382 fprintf(outfp, "\t.desc = \"%s\",\n", je->desc);
383 if (je->compat)
384 fprintf(outfp, "\t.compat = \"%s\",\n", je->compat);
385 fprintf(outfp, "\t.topic = \"%s\",\n", topic);
386 if (je->long_desc && je->long_desc[0])
387 fprintf(outfp, "\t.long_desc = \"%s\",\n", je->long_desc);
388 if (je->pmu)
389 fprintf(outfp, "\t.pmu = \"%s\",\n", je->pmu);
390 if (je->unit)
391 fprintf(outfp, "\t.unit = \"%s\",\n", je->unit);
392 if (je->perpkg)
393 fprintf(outfp, "\t.perpkg = \"%s\",\n", je->perpkg);
394 if (je->aggr_mode)
395 fprintf(outfp, "\t.aggr_mode = \"%d\",\n", convert(je->aggr_mode));
396 if (je->metric_expr)
397 fprintf(outfp, "\t.metric_expr = \"%s\",\n", je->metric_expr);
398 if (je->metric_name)
399 fprintf(outfp, "\t.metric_name = \"%s\",\n", je->metric_name);
400 if (je->metric_group)
401 fprintf(outfp, "\t.metric_group = \"%s\",\n", je->metric_group);
402 if (je->deprecated)
403 fprintf(outfp, "\t.deprecated = \"%s\",\n", je->deprecated);
404 if (je->metric_constraint)
405 fprintf(outfp, "\t.metric_constraint = \"%s\",\n", je->metric_constraint);
406 fprintf(outfp, "},\n");
407
408 return 0;
409}
410
411struct event_struct {
412 struct list_head list;
413 char *name;
414 char *event;
415 char *compat;
416 char *desc;
417 char *long_desc;
418 char *pmu;
419 char *unit;
420 char *perpkg;
421 char *aggr_mode;
422 char *metric_expr;
423 char *metric_name;
424 char *metric_group;
425 char *deprecated;
426 char *metric_constraint;
427};
428
429#define ADD_EVENT_FIELD(field) do { if (je->field) { \
430 es->field = strdup(je->field); \
431 if (!es->field) \
432 goto out_free; \
433} } while (0)
434
435#define FREE_EVENT_FIELD(field) free(es->field)
436
437#define TRY_FIXUP_FIELD(field) do { if (es->field && !je->field) {\
438 je->field = strdup(es->field); \
439 if (!je->field) \
440 return -ENOMEM; \
441} } while (0)
442
443#define FOR_ALL_EVENT_STRUCT_FIELDS(op) do { \
444 op(name); \
445 op(event); \
446 op(desc); \
447 op(long_desc); \
448 op(pmu); \
449 op(unit); \
450 op(perpkg); \
451 op(aggr_mode); \
452 op(metric_expr); \
453 op(metric_name); \
454 op(metric_group); \
455 op(deprecated); \
456} while (0)
457
458static LIST_HEAD(arch_std_events);
459
460static void free_arch_std_events(void)
461{
462 struct event_struct *es, *next;
463
464 list_for_each_entry_safe(es, next, &arch_std_events, list) {
465 FOR_ALL_EVENT_STRUCT_FIELDS(FREE_EVENT_FIELD);
466 list_del_init(&es->list);
467 free(es);
468 }
469}
470
471static int save_arch_std_events(void *data, struct json_event *je)
472{
473 struct event_struct *es;
474
475 es = malloc(sizeof(*es));
476 if (!es)
477 return -ENOMEM;
478 memset(es, 0, sizeof(*es));
479 FOR_ALL_EVENT_STRUCT_FIELDS(ADD_EVENT_FIELD);
480 list_add_tail(&es->list, &arch_std_events);
481 return 0;
482out_free:
483 FOR_ALL_EVENT_STRUCT_FIELDS(FREE_EVENT_FIELD);
484 free(es);
485 return -ENOMEM;
486}
487
488static void print_events_table_suffix(FILE *outfp)
489{
490 fprintf(outfp, "{\n");
491
492 fprintf(outfp, "\t.name = 0,\n");
493 fprintf(outfp, "\t.event = 0,\n");
494 fprintf(outfp, "\t.desc = 0,\n");
495
496 fprintf(outfp, "},\n");
497 fprintf(outfp, "};\n");
498 close_table = 0;
499}
500
501static struct fixed {
502 const char *name;
503 const char *event;
504} fixed[] = {
505 { "inst_retired.any", "event=0xc0,period=2000003" },
506 { "inst_retired.any_p", "event=0xc0,period=2000003" },
507 { "cpu_clk_unhalted.ref", "event=0x0,umask=0x03,period=2000003" },
508 { "cpu_clk_unhalted.thread", "event=0x3c,period=2000003" },
509 { "cpu_clk_unhalted.core", "event=0x3c,period=2000003" },
510 { "cpu_clk_unhalted.thread_any", "event=0x3c,any=1,period=2000003" },
511 { NULL, NULL},
512};
513
514
515
516
517static char *real_event(const char *name, char *event)
518{
519 int i;
520
521 if (!name)
522 return NULL;
523
524 for (i = 0; fixed[i].name; i++)
525 if (!strcasecmp(name, fixed[i].name))
526 return (char *)fixed[i].event;
527 return event;
528}
529
530static int
531try_fixup(const char *fn, char *arch_std, struct json_event *je, char **event)
532{
533
534 struct event_struct *es;
535
536 list_for_each_entry(es, &arch_std_events, list) {
537 if (!strcmp(arch_std, es->name)) {
538 FOR_ALL_EVENT_STRUCT_FIELDS(TRY_FIXUP_FIELD);
539 *event = je->event;
540 return 0;
541 }
542 }
543
544 pr_err("%s: could not find matching %s for %s\n",
545 prog, arch_std, fn);
546 return -1;
547}
548
549
550static int json_events(const char *fn,
551 int (*func)(void *data, struct json_event *je),
552 void *data)
553{
554 int err;
555 size_t size;
556 jsmntok_t *tokens, *tok;
557 int i, j, len;
558 char *map;
559 char buf[128];
560
561 if (!fn)
562 return -ENOENT;
563
564 tokens = parse_json(fn, &map, &size, &len);
565 if (!tokens)
566 return -EIO;
567 EXPECT(tokens->type == JSMN_ARRAY, tokens, "expected top level array");
568 tok = tokens + 1;
569 for (i = 0; i < tokens->size; i++) {
570 char *event = NULL;
571 char *extra_desc = NULL;
572 char *filter = NULL;
573 struct json_event je = {};
574 char *arch_std = NULL;
575 unsigned long long eventcode = 0;
576 struct msrmap *msr = NULL;
577 jsmntok_t *msrval = NULL;
578 jsmntok_t *precise = NULL;
579 jsmntok_t *obj = tok++;
580
581 EXPECT(obj->type == JSMN_OBJECT, obj, "expected object");
582 for (j = 0; j < obj->size; j += 2) {
583 jsmntok_t *field, *val;
584 int nz;
585 char *s;
586
587 field = tok + j;
588 EXPECT(field->type == JSMN_STRING, tok + j,
589 "Expected field name");
590 val = tok + j + 1;
591 EXPECT(val->type == JSMN_STRING, tok + j + 1,
592 "Expected string value");
593
594 nz = !json_streq(map, val, "0");
595 if (match_field(map, field, nz, &event, val)) {
596
597 } else if (json_streq(map, field, "EventCode")) {
598 char *code = NULL;
599 addfield(map, &code, "", "", val);
600 eventcode |= strtoul(code, NULL, 0);
601 free(code);
602 } else if (json_streq(map, field, "ExtSel")) {
603 char *code = NULL;
604 addfield(map, &code, "", "", val);
605 eventcode |= strtoul(code, NULL, 0) << 21;
606 free(code);
607 } else if (json_streq(map, field, "EventName")) {
608 addfield(map, &je.name, "", "", val);
609 } else if (json_streq(map, field, "Compat")) {
610 addfield(map, &je.compat, "", "", val);
611 } else if (json_streq(map, field, "BriefDescription")) {
612 addfield(map, &je.desc, "", "", val);
613 fixdesc(je.desc);
614 } else if (json_streq(map, field,
615 "PublicDescription")) {
616 addfield(map, &je.long_desc, "", "", val);
617 fixdesc(je.long_desc);
618 } else if (json_streq(map, field, "PEBS") && nz) {
619 precise = val;
620 } else if (json_streq(map, field, "MSRIndex") && nz) {
621 msr = lookup_msr(map, val);
622 } else if (json_streq(map, field, "MSRValue")) {
623 msrval = val;
624 } else if (json_streq(map, field, "Errata") &&
625 !json_streq(map, val, "null")) {
626 addfield(map, &extra_desc, ". ",
627 " Spec update: ", val);
628 } else if (json_streq(map, field, "Data_LA") && nz) {
629 addfield(map, &extra_desc, ". ",
630 " Supports address when precise",
631 NULL);
632 } else if (json_streq(map, field, "Unit")) {
633 const char *ppmu;
634
635 ppmu = field_to_perf(unit_to_pmu, map, val);
636 if (ppmu) {
637 je.pmu = strdup(ppmu);
638 } else {
639 if (!je.pmu)
640 je.pmu = strdup("uncore_");
641 addfield(map, &je.pmu, "", "", val);
642 for (s = je.pmu; *s; s++)
643 *s = tolower(*s);
644 }
645 addfield(map, &je.desc, ". ", "Unit: ", NULL);
646 addfield(map, &je.desc, "", je.pmu, NULL);
647 addfield(map, &je.desc, "", " ", NULL);
648 } else if (json_streq(map, field, "Filter")) {
649 addfield(map, &filter, "", "", val);
650 } else if (json_streq(map, field, "ScaleUnit")) {
651 addfield(map, &je.unit, "", "", val);
652 } else if (json_streq(map, field, "PerPkg")) {
653 addfield(map, &je.perpkg, "", "", val);
654 } else if (json_streq(map, field, "AggregationMode")) {
655 addfield(map, &je.aggr_mode, "", "", val);
656 } else if (json_streq(map, field, "Deprecated")) {
657 addfield(map, &je.deprecated, "", "", val);
658 } else if (json_streq(map, field, "MetricName")) {
659 addfield(map, &je.metric_name, "", "", val);
660 } else if (json_streq(map, field, "MetricGroup")) {
661 addfield(map, &je.metric_group, "", "", val);
662 } else if (json_streq(map, field, "MetricConstraint")) {
663 addfield(map, &je.metric_constraint, "", "", val);
664 } else if (json_streq(map, field, "MetricExpr")) {
665 addfield(map, &je.metric_expr, "", "", val);
666 for (s = je.metric_expr; *s; s++)
667 *s = tolower(*s);
668 } else if (json_streq(map, field, "ArchStdEvent")) {
669 addfield(map, &arch_std, "", "", val);
670 for (s = arch_std; *s; s++)
671 *s = tolower(*s);
672 }
673
674 }
675 if (precise && je.desc && !strstr(je.desc, "(Precise Event)")) {
676 if (json_streq(map, precise, "2"))
677 addfield(map, &extra_desc, " ",
678 "(Must be precise)", NULL);
679 else
680 addfield(map, &extra_desc, " ",
681 "(Precise event)", NULL);
682 }
683 snprintf(buf, sizeof buf, "event=%#llx", eventcode);
684 addfield(map, &event, ",", buf, NULL);
685 if (je.desc && extra_desc)
686 addfield(map, &je.desc, " ", extra_desc, NULL);
687 if (je.long_desc && extra_desc)
688 addfield(map, &je.long_desc, " ", extra_desc, NULL);
689 if (filter)
690 addfield(map, &event, ",", filter, NULL);
691 if (msr != NULL)
692 addfield(map, &event, ",", msr->pname, msrval);
693 if (je.name)
694 fixname(je.name);
695
696 if (arch_std) {
697
698
699
700
701 err = try_fixup(fn, arch_std, &je, &event);
702 if (err)
703 goto free_strings;
704 }
705 je.event = real_event(je.name, event);
706 err = func(data, &je);
707free_strings:
708 free(event);
709 free(je.desc);
710 free(je.name);
711 free(je.compat);
712 free(je.long_desc);
713 free(extra_desc);
714 free(je.pmu);
715 free(filter);
716 free(je.perpkg);
717 free(je.aggr_mode);
718 free(je.deprecated);
719 free(je.unit);
720 free(je.metric_expr);
721 free(je.metric_name);
722 free(je.metric_group);
723 free(je.metric_constraint);
724 free(arch_std);
725
726 if (err)
727 break;
728 tok += j;
729 }
730 EXPECT(tok - tokens == len, tok, "unexpected objects at end");
731 err = 0;
732out_free:
733 free_json(map, size, tokens);
734 return err;
735}
736
737static char *file_name_to_table_name(char *fname)
738{
739 unsigned int i;
740 int n;
741 int c;
742 char *tblname;
743
744
745
746
747
748
749 n = asprintf(&tblname, "pme_%s", fname);
750 if (n < 0) {
751 pr_info("%s: asprintf() error %s for file %s\n", prog,
752 strerror(errno), fname);
753 return NULL;
754 }
755
756 for (i = 0; i < strlen(tblname); i++) {
757 c = tblname[i];
758
759 if (c == '-' || c == '/')
760 tblname[i] = '_';
761 else if (c == '.') {
762 tblname[i] = '\0';
763 break;
764 } else if (!isalnum(c) && c != '_') {
765 pr_err("%s: Invalid character '%c' in file name %s\n",
766 prog, c, basename(fname));
767 free(tblname);
768 tblname = NULL;
769 break;
770 }
771 }
772
773 return tblname;
774}
775
776static bool is_sys_dir(char *fname)
777{
778 size_t len = strlen(fname), len2 = strlen("/sys");
779
780 if (len2 > len)
781 return false;
782 return !strcmp(fname+len-len2, "/sys");
783}
784
785static void print_mapping_table_prefix(FILE *outfp)
786{
787 fprintf(outfp, "struct pmu_events_map pmu_events_map[] = {\n");
788}
789
790static void print_mapping_table_suffix(FILE *outfp)
791{
792
793
794
795 fprintf(outfp, "{\n");
796 fprintf(outfp, "\t.cpuid = 0,\n");
797 fprintf(outfp, "\t.version = 0,\n");
798 fprintf(outfp, "\t.type = 0,\n");
799 fprintf(outfp, "\t.table = 0,\n");
800 fprintf(outfp, "},\n");
801
802
803 fprintf(outfp, "};\n");
804}
805
806static void print_mapping_test_table(FILE *outfp)
807{
808
809
810
811 fprintf(outfp, "{\n");
812 fprintf(outfp, "\t.cpuid = \"testcpu\",\n");
813 fprintf(outfp, "\t.version = \"v1\",\n");
814 fprintf(outfp, "\t.type = \"core\",\n");
815 fprintf(outfp, "\t.table = pme_test_cpu,\n");
816 fprintf(outfp, "},\n");
817}
818
819static void print_system_event_mapping_table_prefix(FILE *outfp)
820{
821 fprintf(outfp, "\nstruct pmu_sys_events pmu_sys_event_tables[] = {");
822}
823
824static void print_system_event_mapping_table_suffix(FILE *outfp)
825{
826 fprintf(outfp, "\n\t{\n\t\t.table = 0\n\t},");
827 fprintf(outfp, "\n};\n");
828}
829
830static int process_system_event_tables(FILE *outfp)
831{
832 struct sys_event_table *sys_event_table;
833
834 print_system_event_mapping_table_prefix(outfp);
835
836 list_for_each_entry(sys_event_table, &sys_event_tables, list) {
837 fprintf(outfp, "\n\t{\n\t\t.table = %s,\n\t},",
838 sys_event_table->soc_id);
839 }
840
841 print_system_event_mapping_table_suffix(outfp);
842
843 return 0;
844}
845
846static int process_mapfile(FILE *outfp, char *fpath)
847{
848 int n = 16384;
849 FILE *mapfp;
850 char *save = NULL;
851 char *line, *p;
852 int line_num;
853 char *tblname;
854 int ret = 0;
855
856 pr_info("%s: Processing mapfile %s\n", prog, fpath);
857
858 line = malloc(n);
859 if (!line)
860 return -1;
861
862 mapfp = fopen(fpath, "r");
863 if (!mapfp) {
864 pr_info("%s: Error %s opening %s\n", prog, strerror(errno),
865 fpath);
866 free(line);
867 return -1;
868 }
869
870 print_mapping_table_prefix(outfp);
871
872
873 p = fgets(line, n, mapfp);
874 if (!p)
875 goto out;
876
877 line_num = 1;
878 while (1) {
879 char *cpuid, *version, *type, *fname;
880
881 line_num++;
882 p = fgets(line, n, mapfp);
883 if (!p)
884 break;
885
886 if (line[0] == '#' || line[0] == '\n')
887 continue;
888
889 if (line[strlen(line)-1] != '\n') {
890
891 pr_info("%s: Mapfile %s: line %d too long, aborting\n",
892 prog, fpath, line_num);
893 ret = -1;
894 goto out;
895 }
896 line[strlen(line)-1] = '\0';
897
898 cpuid = fixregex(strtok_r(p, ",", &save));
899 version = strtok_r(NULL, ",", &save);
900 fname = strtok_r(NULL, ",", &save);
901 type = strtok_r(NULL, ",", &save);
902
903 tblname = file_name_to_table_name(fname);
904 fprintf(outfp, "{\n");
905 fprintf(outfp, "\t.cpuid = \"%s\",\n", cpuid);
906 fprintf(outfp, "\t.version = \"%s\",\n", version);
907 fprintf(outfp, "\t.type = \"%s\",\n", type);
908
909
910
911
912
913
914
915
916
917
918 fprintf(outfp, "\t.table = %s\n", tblname);
919 fprintf(outfp, "},\n");
920 }
921
922out:
923 print_mapping_test_table(outfp);
924 print_mapping_table_suffix(outfp);
925 fclose(mapfp);
926 free(line);
927 return ret;
928}
929
930
931
932
933
934
935static void create_empty_mapping(const char *output_file)
936{
937 FILE *outfp;
938
939 pr_info("%s: Creating empty pmu_events_map[] table\n", prog);
940
941
942 outfp = fopen(output_file, "w");
943 if (!outfp) {
944 perror("fopen()");
945 _Exit(1);
946 }
947
948 fprintf(outfp, "#include \"pmu-events/pmu-events.h\"\n");
949 print_mapping_table_prefix(outfp);
950 print_mapping_table_suffix(outfp);
951 print_system_event_mapping_table_prefix(outfp);
952 print_system_event_mapping_table_suffix(outfp);
953 fclose(outfp);
954}
955
956static int get_maxfds(void)
957{
958 struct rlimit rlim;
959
960 if (getrlimit(RLIMIT_NOFILE, &rlim) == 0)
961 return min((int)rlim.rlim_max / 2, 512);
962
963 return 512;
964}
965
966
967
968
969
970static FILE *eventsfp;
971static char *mapfile;
972
973static int is_leaf_dir(const char *fpath)
974{
975 DIR *d;
976 struct dirent *dir;
977 int res = 1;
978
979 d = opendir(fpath);
980 if (!d)
981 return 0;
982
983 while ((dir = readdir(d)) != NULL) {
984 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
985 continue;
986
987 if (dir->d_type == DT_DIR) {
988 res = 0;
989 break;
990 } else if (dir->d_type == DT_UNKNOWN) {
991 char path[PATH_MAX];
992 struct stat st;
993
994 sprintf(path, "%s/%s", fpath, dir->d_name);
995 if (stat(path, &st))
996 break;
997
998 if (S_ISDIR(st.st_mode)) {
999 res = 0;
1000 break;
1001 }
1002 }
1003 }
1004
1005 closedir(d);
1006
1007 return res;
1008}
1009
1010static int is_json_file(const char *name)
1011{
1012 const char *suffix;
1013
1014 if (strlen(name) < 5)
1015 return 0;
1016
1017 suffix = name + strlen(name) - 5;
1018
1019 if (strncmp(suffix, ".json", 5) == 0)
1020 return 1;
1021 return 0;
1022}
1023
1024static int preprocess_arch_std_files(const char *fpath, const struct stat *sb,
1025 int typeflag, struct FTW *ftwbuf)
1026{
1027 int level = ftwbuf->level;
1028 int is_file = typeflag == FTW_F;
1029
1030 if (level == 1 && is_file && is_json_file(fpath))
1031 return json_events(fpath, save_arch_std_events, (void *)sb);
1032
1033 return 0;
1034}
1035
1036static int process_one_file(const char *fpath, const struct stat *sb,
1037 int typeflag, struct FTW *ftwbuf)
1038{
1039 char *tblname, *bname;
1040 int is_dir = typeflag == FTW_D;
1041 int is_file = typeflag == FTW_F;
1042 int level = ftwbuf->level;
1043 int err = 0;
1044
1045 if (level >= 2 && is_dir) {
1046 int count = 0;
1047
1048
1049
1050
1051
1052
1053
1054 bname = (char *) fpath + ftwbuf->base - 2;
1055 for (;;) {
1056 if (*bname == '/')
1057 count++;
1058 if (count == level - 1)
1059 break;
1060 bname--;
1061 }
1062 bname++;
1063 } else
1064 bname = (char *) fpath + ftwbuf->base;
1065
1066 pr_debug("%s %d %7jd %-20s %s\n",
1067 is_file ? "f" : is_dir ? "d" : "x",
1068 level, sb->st_size, bname, fpath);
1069
1070
1071 if (level == 0 || level > 4)
1072 return 0;
1073
1074
1075
1076 if ((level == 1 && is_dir && is_leaf_dir(fpath)) ||
1077 (level >= 2 && is_dir && is_leaf_dir(fpath))) {
1078 if (close_table)
1079 print_events_table_suffix(eventsfp);
1080
1081
1082
1083
1084
1085
1086 tblname = file_name_to_table_name(bname);
1087 if (!tblname) {
1088 pr_info("%s: Error determining table name for %s\n", prog,
1089 bname);
1090 return -1;
1091 }
1092
1093 if (is_sys_dir(bname)) {
1094 struct sys_event_table *sys_event_table;
1095
1096 sys_event_table = malloc(sizeof(*sys_event_table));
1097 if (!sys_event_table)
1098 return -1;
1099
1100 sys_event_table->soc_id = strdup(tblname);
1101 if (!sys_event_table->soc_id) {
1102 free(sys_event_table);
1103 return -1;
1104 }
1105 list_add_tail(&sys_event_table->list,
1106 &sys_event_tables);
1107 }
1108
1109 print_events_table_prefix(eventsfp, tblname);
1110 return 0;
1111 }
1112
1113
1114
1115
1116
1117
1118
1119 if (level == 1 && is_file) {
1120 if (!strcmp(bname, "mapfile.csv")) {
1121 mapfile = strdup(fpath);
1122 return 0;
1123 }
1124
1125 pr_info("%s: Ignoring file %s\n", prog, fpath);
1126 return 0;
1127 }
1128
1129
1130
1131
1132
1133 if (is_file) {
1134 if (!is_json_file(bname)) {
1135 pr_info("%s: Ignoring file without .json suffix %s\n", prog,
1136 fpath);
1137 return 0;
1138 }
1139 }
1140
1141 if (level > 1 && add_topic(bname))
1142 return -ENOMEM;
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156 if (is_file) {
1157 struct perf_entry_data data = {
1158 .topic = get_topic(),
1159 .outfp = eventsfp,
1160 };
1161
1162 err = json_events(fpath, print_events_table_entry, &data);
1163
1164 free(data.topic);
1165 }
1166
1167 return err;
1168}
1169
1170#ifndef PATH_MAX
1171#define PATH_MAX 4096
1172#endif
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186int main(int argc, char *argv[])
1187{
1188 int rc, ret = 0, empty_map = 0;
1189 int maxfds;
1190 char ldirname[PATH_MAX];
1191 const char *arch;
1192 const char *output_file;
1193 const char *start_dirname;
1194 char *err_string_ext = "";
1195 struct stat stbuf;
1196
1197 prog = basename(argv[0]);
1198 if (argc < 4) {
1199 pr_err("Usage: %s <arch> <starting_dir> <output_file>\n", prog);
1200 return 1;
1201 }
1202
1203 arch = argv[1];
1204 start_dirname = argv[2];
1205 output_file = argv[3];
1206
1207 if (argc > 4)
1208 verbose = atoi(argv[4]);
1209
1210 eventsfp = fopen(output_file, "w");
1211 if (!eventsfp) {
1212 pr_err("%s Unable to create required file %s (%s)\n",
1213 prog, output_file, strerror(errno));
1214 return 2;
1215 }
1216
1217 sprintf(ldirname, "%s/%s", start_dirname, arch);
1218
1219
1220 if (stat(ldirname, &stbuf) < 0) {
1221 pr_info("%s: Arch %s has no PMU event lists\n", prog, arch);
1222 empty_map = 1;
1223 goto err_close_eventsfp;
1224 }
1225
1226
1227 fprintf(eventsfp, "#include \"pmu-events/pmu-events.h\"\n");
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239 maxfds = get_maxfds();
1240 rc = nftw(ldirname, preprocess_arch_std_files, maxfds, 0);
1241 if (rc)
1242 goto err_processing_std_arch_event_dir;
1243
1244 rc = nftw(ldirname, process_one_file, maxfds, 0);
1245 if (rc)
1246 goto err_processing_dir;
1247
1248 sprintf(ldirname, "%s/test", start_dirname);
1249
1250 rc = nftw(ldirname, preprocess_arch_std_files, maxfds, 0);
1251 if (rc)
1252 goto err_processing_std_arch_event_dir;
1253
1254 rc = nftw(ldirname, process_one_file, maxfds, 0);
1255 if (rc)
1256 goto err_processing_dir;
1257
1258 if (close_table)
1259 print_events_table_suffix(eventsfp);
1260
1261 if (!mapfile) {
1262 pr_info("%s: No CPU->JSON mapping?\n", prog);
1263 empty_map = 1;
1264 goto err_close_eventsfp;
1265 }
1266
1267 rc = process_mapfile(eventsfp, mapfile);
1268 if (rc) {
1269 pr_info("%s: Error processing mapfile %s\n", prog, mapfile);
1270
1271 ret = 1;
1272 goto err_close_eventsfp;
1273 }
1274
1275 rc = process_system_event_tables(eventsfp);
1276 fclose(eventsfp);
1277 if (rc) {
1278 ret = 1;
1279 goto err_out;
1280 }
1281
1282 free_arch_std_events();
1283 free(mapfile);
1284 return 0;
1285
1286err_processing_std_arch_event_dir:
1287 err_string_ext = " for std arch event";
1288err_processing_dir:
1289 if (verbose) {
1290 pr_info("%s: Error walking file tree %s%s\n", prog, ldirname,
1291 err_string_ext);
1292 empty_map = 1;
1293 } else if (rc < 0) {
1294 ret = 1;
1295 } else {
1296 empty_map = 1;
1297 }
1298err_close_eventsfp:
1299 fclose(eventsfp);
1300 if (empty_map)
1301 create_empty_mapping(output_file);
1302err_out:
1303 free_arch_std_events();
1304 free(mapfile);
1305 return ret;
1306}
1307