1 /* Parse event JSON files */
2
3 /*
4 * Copyright (c) 2014, Intel Corporation
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
20 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
21 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
22 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
26 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
28 * OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include <sys/param.h>
32 #include <sys/resource.h> /* getrlimit */
33 #include <sys/stat.h>
34 #include <sys/time.h> /* getrlimit */
35 #include <ctype.h>
36 #include <dirent.h>
37 #include <errno.h>
38 #include <libgen.h>
39 #include <limits.h>
40 #include <stdarg.h>
41 #include <stddef.h>
42 #include <stdio.h>
43 #include <stdlib.h>
44 #include <string.h>
45 #include <unistd.h>
46 #include <ftw.h>
47 #include "list.h"
48 #include "jsmn.h"
49 #include "json.h"
50 #include "pmu-events.h"
51
52 static int
53 nftw_ordered(const char *path, int (*fn)(const char *, const struct stat *, int,
54 struct FTW *), int nfds, int ftwflags);
55 #define nftw nftw_ordered
56
57 _Noreturn void _Exit(int);
58 char *get_cpu_str(void);
59
60 int verbose;
61 static char *prog;
62
63 struct json_event {
64 char *name;
65 char *compat;
66 char *event;
67 char *desc;
68 char *long_desc;
69 char *pmu;
70 char *unit;
71 char *perpkg;
72 char *aggr_mode;
73 char *metric_expr;
74 char *metric_threshold;
75 char *metric_name;
76 char *metric_group;
77 char *metric_group_nogroup;
78 char *default_metric_group;
79 char *deprecated;
80 char *metric_constraint;
81 };
82
convert(const char * aggr_mode)83 static enum aggr_mode_class convert(const char *aggr_mode)
84 {
85 if (!strcmp(aggr_mode, "PerCore"))
86 return PerCore;
87 else if (!strcmp(aggr_mode, "PerChip"))
88 return PerChip;
89
90 pr_err("%s: Wrong AggregationMode value '%s'\n", prog, aggr_mode);
91 return -1;
92 }
93
94 static LIST_HEAD(sys_event_tables);
95
96 struct sys_event_table {
97 struct list_head list;
98 char *soc_id;
99 };
100
free_sys_event_tables(void)101 static void free_sys_event_tables(void)
102 {
103 struct sys_event_table *et, *next;
104
105 list_for_each_entry_safe(et, next, &sys_event_tables, list) {
106 free(et->soc_id);
107 free(et);
108 }
109 }
110
eprintf(int level,int var,const char * fmt,...)111 int eprintf(int level, int var, const char *fmt, ...)
112 {
113
114 int ret;
115 va_list args;
116
117 if (var < level)
118 return 0;
119
120 va_start(args, fmt);
121
122 ret = vfprintf(stderr, fmt, args);
123
124 va_end(args);
125
126 return ret;
127 }
128
addfield(char * map,char ** dst,const char * sep,const char * a,jsmntok_t * bt)129 static void addfield(char *map, char **dst, const char *sep,
130 const char *a, jsmntok_t *bt)
131 {
132 unsigned int len = strlen(a) + 1 + strlen(sep);
133 int olen = *dst ? strlen(*dst) : 0;
134 int blen = bt ? json_len(bt) : 0;
135 char *out;
136
137 out = realloc(*dst, len + olen + blen);
138 if (!out) {
139 /* Don't add field in this case */
140 return;
141 }
142 *dst = out;
143
144 if (!olen)
145 *(*dst) = 0;
146 else
147 strcat(*dst, sep);
148 strcat(*dst, a);
149 if (bt)
150 strncat(*dst, map + bt->start, blen);
151 }
152
fixname(char * s)153 static void fixname(char *s)
154 {
155 for (; *s; s++)
156 *s = tolower(*s);
157 }
158
fixdesc(char * s)159 static void fixdesc(char *s)
160 {
161 char *e = s + strlen(s);
162
163 /* Remove trailing dots that look ugly in perf list */
164 --e;
165 while (e >= s && isspace(*e))
166 --e;
167 if (e >= s && *e == '.')
168 *e = 0;
169 }
170
171 /* Add escapes for '\' so they are proper C strings. */
fixregex(char * s)172 static char *fixregex(char *s)
173 {
174 int len = 0;
175 int esc_count = 0;
176 char *fixed = NULL;
177 char *p, *q;
178
179 /* Count the number of '\' in string */
180 for (p = s; *p; p++) {
181 ++len;
182 if (*p == '\\')
183 ++esc_count;
184 }
185
186 if (esc_count == 0)
187 return s;
188
189 /* allocate space for a new string */
190 fixed = (char *) malloc(len + esc_count + 1);
191 if (!fixed)
192 return NULL;
193
194 /* copy over the characters */
195 q = fixed;
196 for (p = s; *p; p++) {
197 if (*p == '\\') {
198 *q = '\\';
199 ++q;
200 }
201 *q = *p;
202 ++q;
203 }
204 *q = '\0';
205 return fixed;
206 }
207
208 static struct msrmap {
209 const char *num;
210 const char *pname;
211 } msrmap[] = {
212 { "0x3F6", "ldlat=" },
213 { "0x1A6", "offcore_rsp=" },
214 { "0x1A7", "offcore_rsp=" },
215 { "0x3F7", "frontend=" },
216 { NULL, NULL }
217 };
218
cut_comma(char * map,jsmntok_t * newval)219 static void cut_comma(char *map, jsmntok_t *newval)
220 {
221 int i;
222
223 /* Cut off everything after comma */
224 for (i = newval->start; i < newval->end; i++) {
225 if (map[i] == ',')
226 newval->end = i;
227 }
228 }
229
lookup_msr(char * map,jsmntok_t * val)230 static struct msrmap *lookup_msr(char *map, jsmntok_t *val)
231 {
232 jsmntok_t newval = *val;
233 static bool warned;
234 int i;
235
236 cut_comma(map, &newval);
237 for (i = 0; msrmap[i].num; i++)
238 if (json_streq(map, &newval, msrmap[i].num))
239 return &msrmap[i];
240 if (!warned) {
241 warned = true;
242 pr_err("%s: Unknown MSR in event file %.*s\n", prog,
243 json_len(val), map + val->start);
244 }
245 return NULL;
246 }
247
248 /*
249 * Converts the unit names to add a prefix used to identify the counter class
250 * in other parts of libpmc. The fallback path for unknown units prefixes the
251 * unit with "uncore_".
252 */
253 static struct map {
254 const char *json;
255 const char *perf;
256 } unit_to_pmu[] = {
257 /* Intel */
258 { "cpu_core", "cpu_core" },
259 { "cpu_atom", "cpu_atom" },
260 { "CBO", "uncore_cbox" },
261 { "QPI LL", "uncore_qpi" },
262 { "SBO", "uncore_sbox" },
263 { "iMPH-U", "uncore_arb" },
264 { "UPI LL", "uncore_upi" },
265 /* AMD */
266 { "L3PMC", "amd_l3" },
267 { "DFPMC", "amd_df" },
268 /* ARM HiSilicon */
269 { "hisi_sicl,cpa", "hisi_sicl,cpa"},
270 { "hisi_sccl,ddrc", "hisi_sccl,ddrc" },
271 { "hisi_sccl,hha", "hisi_sccl,hha" },
272 { "hisi_sccl,l3c", "hisi_sccl,l3c" },
273 /* ARM FreeScale */
274 { "imx8_ddr", "imx8_ddr" },
275 {}
276 };
277
field_to_perf(struct map * table,char * map,jsmntok_t * val)278 static const char *field_to_perf(struct map *table, char *map, jsmntok_t *val)
279 {
280 int i;
281
282 for (i = 0; table[i].json; i++) {
283 if (json_streq(map, val, table[i].json))
284 return table[i].perf;
285 }
286 return NULL;
287 }
288
289 #define EXPECT(e, t, m) do { if (!(e)) { \
290 jsmntok_t *loc = (t); \
291 if (!(t)->start && (t) > tokens) \
292 loc = (t) - 1; \
293 pr_err("%s:%d: " m ", got %s\n", fn, \
294 json_line(map, loc), \
295 json_name(t)); \
296 err = -EIO; \
297 goto out_free; \
298 } } while (0)
299
300 static char *topic;
301
get_topic(void)302 static char *get_topic(void)
303 {
304 char *tp;
305 int i;
306
307 /* tp is free'd in process_one_file() */
308 i = asprintf(&tp, "%s", topic);
309 if (i < 0) {
310 pr_info("%s: asprintf() error %s\n", prog);
311 return NULL;
312 }
313
314 for (i = 0; i < (int) strlen(tp); i++) {
315 char c = tp[i];
316
317 if (c == '-')
318 tp[i] = ' ';
319 else if (c == '.') {
320 tp[i] = '\0';
321 break;
322 }
323 }
324
325 return tp;
326 }
327
add_topic(char * bname)328 static int add_topic(char *bname)
329 {
330 free(topic);
331 topic = strdup(bname);
332 if (!topic) {
333 pr_info("%s: strdup() error %s for file %s\n", prog,
334 strerror(errno), bname);
335 return -ENOMEM;
336 }
337 return 0;
338 }
339
340 struct perf_entry_data {
341 FILE *outfp;
342 char *topic;
343 };
344
345 static int close_table;
346
print_events_table_prefix(FILE * fp,const char * tblname)347 static void print_events_table_prefix(FILE *fp, const char *tblname)
348 {
349 fprintf(fp, "static const struct pmu_event %s[] = {\n", tblname);
350 close_table = 1;
351 }
352
print_events_table_entry(void * data,struct json_event * je)353 static int print_events_table_entry(void *data, struct json_event *je)
354 {
355 struct perf_entry_data *pd = data;
356 FILE *outfp = pd->outfp;
357 char *topic_local = pd->topic;
358
359 /*
360 * TODO: Remove formatting chars after debugging to reduce
361 * string lengths.
362 */
363 fprintf(outfp, "{\n");
364
365 if (je->name)
366 fprintf(outfp, "\t.name = \"%s\",\n", je->name);
367 if (je->event)
368 fprintf(outfp, "\t.event = \"%s\",\n", je->event);
369 fprintf(outfp, "\t.desc = \"%s\",\n", je->desc);
370 if (je->compat)
371 fprintf(outfp, "\t.compat = \"%s\",\n", je->compat);
372 fprintf(outfp, "\t.topic = \"%s\",\n", topic_local);
373 if (je->long_desc && je->long_desc[0])
374 fprintf(outfp, "\t.long_desc = \"%s\",\n", je->long_desc);
375 if (je->pmu)
376 fprintf(outfp, "\t.pmu = \"%s\",\n", je->pmu);
377 if (je->unit)
378 fprintf(outfp, "\t.unit = \"%s\",\n", je->unit);
379 if (je->perpkg)
380 fprintf(outfp, "\t.perpkg = \"%s\",\n", je->perpkg);
381 if (je->aggr_mode)
382 fprintf(outfp, "\t.aggr_mode = \"%d\",\n", convert(je->aggr_mode));
383 if (je->metric_expr)
384 fprintf(outfp, "\t.metric_expr = \"%s\",\n", je->metric_expr);
385 if (je->metric_threshold)
386 fprintf(outfp, "\t.metric_threshold = \"%s\",\n", je->metric_threshold);
387 if (je->metric_name)
388 fprintf(outfp, "\t.metric_name = \"%s\",\n", je->metric_name);
389 if (je->metric_group)
390 fprintf(outfp, "\t.metric_group = \"%s\",\n", je->metric_group);
391 if (je->metric_group_nogroup)
392 fprintf(outfp, "\t.metric_group_nogroup = \"%s\",\n", je->metric_group_nogroup);
393 if (je->default_metric_group)
394 fprintf(outfp, "\t.default_metric_group = \"%s\",\n", je->default_metric_group);
395 if (je->deprecated)
396 fprintf(outfp, "\t.deprecated = \"%s\",\n", je->deprecated);
397 if (je->metric_constraint)
398 fprintf(outfp, "\t.metric_constraint = \"%s\",\n", je->metric_constraint);
399 fprintf(outfp, "},\n");
400
401 return 0;
402 }
403
404 struct event_struct {
405 struct list_head list;
406 char *name;
407 char *event;
408 char *compat;
409 char *desc;
410 char *long_desc;
411 char *pmu;
412 char *unit;
413 char *perpkg;
414 char *aggr_mode;
415 char *metric_expr;
416 char *metric_threshold;
417 char *metric_name;
418 char *metric_group;
419 char *metric_group_nogroup;
420 char *default_metric_group;
421 char *deprecated;
422 char *metric_constraint;
423 };
424
425 #define ADD_EVENT_FIELD(field) do { if (je->field) { \
426 es->field = strdup(je->field); \
427 if (!es->field) \
428 goto out_free; \
429 } } while (0)
430
431 #define FREE_EVENT_FIELD(field) free(es->field)
432
433 #define TRY_FIXUP_FIELD(field) do { if (es->field && !je->field) {\
434 je->field = strdup(es->field); \
435 if (!je->field) \
436 return -ENOMEM; \
437 } } while (0)
438
439 #define FOR_ALL_EVENT_STRUCT_FIELDS(op) do { \
440 op(name); \
441 op(event); \
442 op(desc); \
443 op(long_desc); \
444 op(pmu); \
445 op(unit); \
446 op(perpkg); \
447 op(aggr_mode); \
448 op(metric_expr); \
449 op(metric_threshold); \
450 op(metric_name); \
451 op(metric_group); \
452 op(metric_group_nogroup); \
453 op(default_metric_group); \
454 op(deprecated); \
455 } while (0)
456
457 static LIST_HEAD(arch_std_events);
458
free_arch_std_events(void)459 static void free_arch_std_events(void)
460 {
461 struct event_struct *es, *next;
462
463 list_for_each_entry_safe(es, next, &arch_std_events, list) {
464 FOR_ALL_EVENT_STRUCT_FIELDS(FREE_EVENT_FIELD);
465 list_del_init(&es->list);
466 free(es);
467 }
468 }
469
save_arch_std_events(void * data __unused,struct json_event * je)470 static int save_arch_std_events(void *data __unused, struct json_event *je)
471 {
472 struct event_struct *es;
473
474 es = malloc(sizeof(*es));
475 if (!es)
476 return -ENOMEM;
477 memset(es, 0, sizeof(*es));
478 FOR_ALL_EVENT_STRUCT_FIELDS(ADD_EVENT_FIELD);
479 list_add_tail(&es->list, &arch_std_events);
480 return 0;
481 out_free:
482 FOR_ALL_EVENT_STRUCT_FIELDS(FREE_EVENT_FIELD);
483 free(es);
484 return -ENOMEM;
485 }
486
print_events_table_suffix(FILE * outfp)487 static void print_events_table_suffix(FILE *outfp)
488 {
489 fprintf(outfp, "{\n");
490
491 fprintf(outfp, "\t.name = 0,\n");
492 fprintf(outfp, "\t.event = 0,\n");
493 fprintf(outfp, "\t.desc = 0,\n");
494
495 fprintf(outfp, "},\n");
496 fprintf(outfp, "};\n");
497 close_table = 0;
498 }
499
500 static struct fixed {
501 const char *name;
502 const char *event;
503 } fixed[] = {
504 #if 0
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 #endif
512 { NULL, NULL},
513 };
514
515 /*
516 * Handle different fixed counter encodings between JSON and perf.
517 */
real_event(const char * name,char * event)518 static char *real_event(const char *name, char *event)
519 {
520 int i;
521
522 if (!name)
523 return NULL;
524
525 for (i = 0; fixed[i].name; i++)
526 if (!strcasecmp(name, fixed[i].name))
527 return (char *)fixed[i].event;
528 return event;
529 }
530
531 static int
try_fixup(const char * fn,char * arch_std,struct json_event * je,char ** event)532 try_fixup(const char *fn, char *arch_std, struct json_event *je, char **event)
533 {
534 /* try to find matching event from arch standard values */
535 struct event_struct *es;
536
537 list_for_each_entry(es, &arch_std_events, list) {
538 if (!strcmp(arch_std, es->name)) {
539 FOR_ALL_EVENT_STRUCT_FIELDS(TRY_FIXUP_FIELD);
540 *event = je->event;
541 return 0;
542 }
543 }
544
545 pr_err("%s: could not find matching %s for %s\n",
546 prog, arch_std, fn);
547 return -1;
548 }
549
550 /* Call func with each event in the json file */
json_events(const char * fn,int (* func)(void * data,struct json_event * je),void * data)551 static int json_events(const char *fn,
552 int (*func)(void *data, struct json_event *je),
553 void *data)
554 {
555 int err;
556 size_t size;
557 jsmntok_t *tokens, *tok;
558 int i, j, len;
559 char *map;
560 char buf[128];
561
562 if (!fn)
563 return -ENOENT;
564
565 tokens = parse_json(fn, &map, &size, &len);
566 if (!tokens)
567 return -EIO;
568 EXPECT(tokens->type == JSMN_ARRAY, tokens, "expected top level array");
569 tok = tokens + 1;
570 for (i = 0; i < tokens->size; i++) {
571 char *event = NULL;
572 char *extra_desc = NULL;
573 char *filter = NULL;
574 struct json_event je = {};
575 char *arch_std = NULL;
576 unsigned long long eventcode = 0;
577 unsigned long long configcode = 0;
578 struct msrmap *msr = NULL;
579 jsmntok_t *msrval = NULL;
580 jsmntok_t *precise = NULL;
581 jsmntok_t *obj = tok++;
582 bool configcode_present = false;
583 char *umask = NULL;
584 char *allcores = NULL;
585 char *allslices = NULL;
586 char *sliceid = NULL;
587 char *threadmask = NULL;
588 char *cmask = NULL;
589 char *inv = NULL;
590 char *any = NULL;
591 char *edge = NULL;
592 char *period = NULL;
593 char *fc_mask = NULL;
594 char *ch_mask = NULL;
595
596 EXPECT(obj->type == JSMN_OBJECT, obj, "expected object");
597 for (j = 0; j < obj->size; j += 2) {
598 jsmntok_t *field, *val;
599 int nz;
600 char *s;
601
602 field = tok + j;
603 EXPECT(field->type == JSMN_STRING, tok + j,
604 "Expected field name");
605 val = tok + j + 1;
606 EXPECT(val->type == JSMN_STRING, tok + j + 1,
607 "Expected string value");
608
609 nz = !json_streq(map, val, "0");
610 /*
611 * Match the field against known fields. This list is
612 * an explicit whitelist so that the build will break
613 * if we add new json definitions with unimplemented
614 * fields. If a field may contain a zero value that
615 * results in ignoring the field, do not check nz in
616 * the top level conditional statement as it will
617 * result in executing the else clause that reports an
618 * error.
619 */
620 if (json_streq(map, field, "UMask")) {
621 if (nz)
622 addfield(map, &umask, "", "umask=", val);
623 } else if (json_streq(map, field, "EnAllCores")) {
624 addfield(map, &allcores, "", "allcores=", val);
625 } else if (json_streq(map, field, "EnAllSlices")) {
626 /*
627 * We use the AMD PPR Family 1Ah Model 70h
628 * naming scheme of allsources rather than
629 * slices. The symbol EnAllSlices is not used
630 * anywhere except in Zen 4+ for the L3
631 * counters.
632 */
633 addfield(map, &allslices, "", "allsources=", val);
634 } else if (json_streq(map, field, "SliceId")) {
635 /*
636 * We use sourceid because there's a
637 * descripency where the JSON from linux calls
638 * it a SliceId, which is not the name used by
639 * AMD in the PPRs. The field name from Family
640 * 19h and below that calls it slicemask see
641 * the references in hwpmc_amd.h.
642 */
643 addfield(map, &sliceid, "", "sourceid=", val);
644 } else if (json_streq(map, field, "ThreadMask")) {
645 if (nz)
646 addfield(map, &threadmask, "", "l3_thread_mask=", val);
647 } else if (json_streq(map, field, "CounterMask")) {
648 if (nz)
649 addfield(map, &cmask, "", "cmask=", val);
650 } else if (json_streq(map, field, "RdWrMask")) {
651 /* AMD UMC */
652 } else if (json_streq(map, field, "Invert")) {
653 if (nz)
654 addfield(map, &inv, "", "inv=", val);
655 } else if (json_streq(map, field, "AnyThread")) {
656 if (nz)
657 addfield(map, &any, "", "any=", val);
658 } else if (json_streq(map, field, "EdgeDetect")) {
659 if (nz)
660 addfield(map, &edge, "", "edge=", val);
661 } else if (json_streq(map, field, "SampleAfterValue")) {
662 if (nz)
663 addfield(map, &period, "", "period=", val);
664 } else if (json_streq(map, field, "FCMask") && nz) {
665 addfield(map, &fc_mask, "", "fc_mask=", val);
666 } else if (json_streq(map, field, "PortMask") && nz) {
667 addfield(map, &ch_mask, "", "ch_mask=", val);
668 } else if (json_streq(map, field, "EventCode")) {
669 char *code = NULL;
670 addfield(map, &code, "", "", val);
671 eventcode |= strtoul(code, NULL, 0);
672 free(code);
673 } else if (json_streq(map, field, "ConfigCode")) {
674 char *code = NULL;
675 addfield(map, &code, "", "", val);
676 configcode |= strtoul(code, NULL, 0);
677 free(code);
678 configcode_present = true;
679 } else if (json_streq(map, field, "ExtSel")) {
680 char *code = NULL;
681 addfield(map, &code, "", "", val);
682 eventcode |= strtoul(code, NULL, 0) << 8;
683 free(code);
684 } else if (json_streq(map, field, "EventName")) {
685 addfield(map, &je.name, "", "", val);
686 } else if (json_streq(map, field, "Compat")) {
687 addfield(map, &je.compat, "", "", val);
688 } else if (json_streq(map, field, "BriefDescription")) {
689 addfield(map, &je.desc, "", "", val);
690 fixdesc(je.desc);
691 } else if (json_streq(map, field,
692 "PublicDescription")) {
693 addfield(map, &je.long_desc, "", "", val);
694 fixdesc(je.long_desc);
695 } else if (json_streq(map, field, "PEBS") && nz) {
696 precise = val;
697 } else if (json_streq(map, field, "MSRIndex") && nz) {
698 msr = lookup_msr(map, val);
699 } else if (json_streq(map, field, "MSRValue")) {
700 msrval = val;
701 } else if (json_streq(map, field, "Errata") &&
702 !json_streq(map, val, "null")) {
703 addfield(map, &extra_desc, ". ",
704 " Spec update: ", val);
705 } else if (json_streq(map, field, "Data_LA") && nz) {
706 addfield(map, &extra_desc, ". ",
707 " Supports address when precise",
708 NULL);
709 } else if (json_streq(map, field, "Unit")) {
710 const char *ppmu;
711
712 ppmu = field_to_perf(unit_to_pmu, map, val);
713 if (ppmu) {
714 je.pmu = strdup(ppmu);
715 } else {
716 if (!je.pmu)
717 je.pmu = strdup("uncore_");
718 addfield(map, &je.pmu, "", "", val);
719 for (s = je.pmu; *s; s++)
720 *s = tolower(*s);
721 }
722 } else if (json_streq(map, field, "Filter")) {
723 addfield(map, &filter, "", "", val);
724 } else if (json_streq(map, field, "ScaleUnit")) {
725 addfield(map, &je.unit, "", "", val);
726 } else if (json_streq(map, field, "PerPkg")) {
727 addfield(map, &je.perpkg, "", "", val);
728 } else if (json_streq(map, field, "AggregationMode")) {
729 addfield(map, &je.aggr_mode, "", "", val);
730 } else if (json_streq(map, field, "Deprecated")) {
731 addfield(map, &je.deprecated, "", "", val);
732 } else if (json_streq(map, field, "MetricName")) {
733 addfield(map, &je.metric_name, "", "", val);
734 } else if (json_streq(map, field, "MetricGroup")) {
735 addfield(map, &je.metric_group, "", "", val);
736 } else if (json_streq(map, field, "MetricgroupNoGroup")) {
737 addfield(map, &je.metric_group_nogroup, "", "", val);
738 } else if (json_streq(map, field, "DefaultMetricgroupName")) {
739 addfield(map, &je.default_metric_group, "", "", val);
740 } else if (json_streq(map, field, "MetricConstraint")) {
741 addfield(map, &je.metric_constraint, "", "", val);
742 } else if (json_streq(map, field, "MetricExpr")) {
743 addfield(map, &je.metric_expr, "", "", val);
744 } else if (json_streq(map, field, "MetricThreshold")) {
745 addfield(map, &je.metric_threshold, "", "", val);
746 } else if (json_streq(map, field, "ArchStdEvent")) {
747 addfield(map, &arch_std, "", "", val);
748 for (s = arch_std; *s; s++)
749 *s = tolower(*s);
750 } else if (json_streq(map, field, "Offcore")) {
751 /* Check the relevant MSR has been set */
752 } else if (json_streq(map, field, "CounterType")) {
753 /* Unsupported Intel Offcore counters */
754 } else if (json_streq(map, field, "UMaskExt")) {
755 /* Unsupported Intel Offcore counters */
756 } else if (json_streq(map, field, "PDIR_COUNTER")) {
757 /* Intel PEBS not supported */
758 } else if (json_streq(map, field, "CollectPEBSRecord")) {
759 /* Intel PEBS not supported */
760 } else if (json_streq(map, field, "PEBScounters")) {
761 /* Intel PEBS not supported */
762 } else if (json_streq(map, field, "Counter")) {
763 /* Intel PEBS not supported */
764 } else if (json_streq(map, field, "CounterHTOff")) {
765 /* Intel PEBS not supported */
766 } else if (json_streq(map, field, "PRECISE_STORE")) {
767 /* Intel PEBS not supported */
768 } else if (json_streq(map, field, "L1_Hit_Indication")) {
769 /* Intel PEBS not supported */
770 } else if (json_streq(map, field, "RetirementLatencyMin")) {
771 /* Intel TPEBS not supported */
772 } else if (json_streq(map, field, "RetirementLatencyMax")) {
773 /* Intel TPEBS not supported */
774 } else if (json_streq(map, field, "RetirementLatencyMean")) {
775 /* Intel TPEBS not supported */
776 } else if (json_streq(map, field, "Speculative")) {
777 /* Intel informative */
778 } else if (json_streq(map, field, "Experimental")) {
779 /* Intel informative */
780 } else if (json_streq(map, field, "ELLC")) {
781 /* Intel informative */
782 } else if (json_streq(map, field, "TakenAlone")) {
783 /*
784 * Do not measure with other counters, usually
785 * this is because it uses an MSR to filter the
786 * event in a way that affects other counters.
787 */
788 if (json_streq(map, val, "1"))
789 addfield(map, &event, ",", "alone", NULL);
790 } else {
791 /*
792 * We shouldn't ignore unknown fields that may
793 * make the counter invalid!
794 *
795 * Often the JSON definitions are copied
796 * without checking if any fields require
797 * handling.
798 */
799 json_copystr(map, field, buf, sizeof(buf));
800 fprintf(stderr, "Unknown event field '%s' in %s\n", buf, fn);
801 _Exit(1);
802 }
803 }
804 if (precise && je.desc && !strstr(je.desc, "(Precise Event)")) {
805 if (json_streq(map, precise, "2")) {
806 addfield(map, &extra_desc, " ",
807 "(Must be precise)", NULL);
808 addfield(map, &event, ",", "pebs=", precise);
809 } else {
810 addfield(map, &extra_desc, " ",
811 "(Precise event)", NULL);
812 }
813 }
814 if (configcode_present)
815 snprintf(buf, sizeof buf, "config=%#llx", configcode);
816 else
817 snprintf(buf, sizeof buf, "event=%#llx", eventcode);
818 addfield(map, &event, ",", buf, NULL);
819 if (any)
820 addfield(map, &event, ",", any, NULL);
821 if (ch_mask)
822 addfield(map, &event, ",", ch_mask, NULL);
823 if (cmask)
824 addfield(map, &event, ",", cmask, NULL);
825 if (edge)
826 addfield(map, &event, ",", edge, NULL);
827 if (fc_mask)
828 addfield(map, &event, ",", fc_mask, NULL);
829 if (inv)
830 addfield(map, &event, ",", inv, NULL);
831 if (period)
832 addfield(map, &event, ",", period, NULL);
833 if (umask)
834 addfield(map, &event, ",", umask, NULL);
835 if (allcores)
836 addfield(map, &event, ",", allcores, NULL);
837 if (allslices)
838 addfield(map, &event, ",", allslices, NULL);
839 if (sliceid)
840 addfield(map, &event, ",", sliceid, NULL);
841 if (threadmask)
842 addfield(map, &event, ",", threadmask, NULL);
843
844 if (je.desc && extra_desc)
845 addfield(map, &je.desc, " ", extra_desc, NULL);
846 if (je.long_desc && extra_desc)
847 addfield(map, &je.long_desc, " ", extra_desc, NULL);
848 if (je.pmu) {
849 addfield(map, &je.desc, ". ", "Unit: ", NULL);
850 addfield(map, &je.desc, "", je.pmu, NULL);
851 addfield(map, &je.desc, "", " ", NULL);
852 }
853 if (filter)
854 addfield(map, &event, ",", filter, NULL);
855 if (msr != NULL)
856 addfield(map, &event, ",", msr->pname, msrval);
857 if (je.name)
858 fixname(je.name);
859
860 if (arch_std) {
861 /*
862 * An arch standard event is referenced, so try to
863 * fixup any unassigned values.
864 */
865 err = try_fixup(fn, arch_std, &je, &event);
866 if (err)
867 goto free_strings;
868 }
869 je.event = real_event(je.name, event);
870 err = func(data, &je);
871 free_strings:
872 free(umask);
873 free(allcores);
874 free(allslices);
875 free(sliceid);
876 free(threadmask);
877 free(cmask);
878 free(inv);
879 free(any);
880 free(edge);
881 free(period);
882 free(fc_mask);
883 free(ch_mask);
884 free(event);
885 free(je.desc);
886 free(je.name);
887 free(je.compat);
888 free(je.long_desc);
889 free(extra_desc);
890 free(je.pmu);
891 free(filter);
892 free(je.perpkg);
893 free(je.aggr_mode);
894 free(je.deprecated);
895 free(je.unit);
896 free(je.metric_expr);
897 free(je.metric_threshold);
898 free(je.metric_name);
899 free(je.metric_group);
900 free(je.metric_group_nogroup);
901 free(je.default_metric_group);
902 free(je.metric_constraint);
903 free(arch_std);
904
905 if (err)
906 break;
907 tok += j;
908 }
909 EXPECT(tok - tokens == len, tok, "unexpected objects at end");
910 err = 0;
911 out_free:
912 free_json(map, size, tokens);
913 return err;
914 }
915
file_name_to_table_name(char * fname)916 static char *file_name_to_table_name(char *fname)
917 {
918 unsigned int i;
919 int n;
920 int c;
921 char *tblname;
922
923 /*
924 * Ensure tablename starts with alphabetic character.
925 * Derive rest of table name from basename of the JSON file,
926 * replacing hyphens and stripping out .json suffix.
927 */
928 n = asprintf(&tblname, "pme_%s", fname);
929 if (n < 0) {
930 pr_info("%s: asprintf() error %s for file %s\n", prog,
931 strerror(errno), fname);
932 return NULL;
933 }
934
935 for (i = 0; i < strlen(tblname); i++) {
936 c = tblname[i];
937
938 if (c == '-' || c == '/')
939 tblname[i] = '_';
940 else if (c == '.') {
941 tblname[i] = '\0';
942 break;
943 } else if (!isalnum(c) && c != '_') {
944 pr_err("%s: Invalid character '%c' in file name '%s'\n",
945 prog, c, fname);
946 free(tblname);
947 tblname = NULL;
948 break;
949 }
950 }
951
952 return tblname;
953 }
954
is_sys_dir(char * fname)955 static bool is_sys_dir(char *fname)
956 {
957 size_t len = strlen(fname), len2 = strlen("/sys");
958
959 if (len2 > len)
960 return false;
961 return !strcmp(fname+len-len2, "/sys");
962 }
963
print_mapping_table_prefix(FILE * outfp)964 static void print_mapping_table_prefix(FILE *outfp)
965 {
966 fprintf(outfp, "const struct pmu_events_map pmu_events_map[] = {\n");
967 }
968
print_mapping_table_suffix(FILE * outfp)969 static void print_mapping_table_suffix(FILE *outfp)
970 {
971 /*
972 * Print the terminating, NULL entry.
973 */
974 fprintf(outfp, "{\n");
975 fprintf(outfp, "\t.cpuid = 0,\n");
976 fprintf(outfp, "\t.version = 0,\n");
977 fprintf(outfp, "\t.type = 0,\n");
978 fprintf(outfp, "\t.table = 0,\n");
979 fprintf(outfp, "},\n");
980
981 /* and finally, the closing curly bracket for the struct */
982 fprintf(outfp, "};\n");
983 }
984
print_mapping_test_table(FILE * outfp)985 static void print_mapping_test_table(FILE *outfp)
986 {
987 /*
988 * Print the terminating, NULL entry.
989 */
990 fprintf(outfp, "{\n");
991 fprintf(outfp, "\t.cpuid = \"testcpu\",\n");
992 fprintf(outfp, "\t.version = \"v1\",\n");
993 fprintf(outfp, "\t.type = \"core\",\n");
994 fprintf(outfp, "\t.table = pme_test_soc_cpu,\n");
995 fprintf(outfp, "},\n");
996 }
997
print_system_event_mapping_table_prefix(FILE * outfp)998 static void print_system_event_mapping_table_prefix(FILE *outfp)
999 {
1000 fprintf(outfp, "\nconst struct pmu_sys_events pmu_sys_event_tables[] = {");
1001 }
1002
print_system_event_mapping_table_suffix(FILE * outfp)1003 static void print_system_event_mapping_table_suffix(FILE *outfp)
1004 {
1005 fprintf(outfp, "\n\t{\n\t\t.table = 0\n\t},");
1006 fprintf(outfp, "\n};\n");
1007 }
1008
process_system_event_tables(FILE * outfp)1009 static int process_system_event_tables(FILE *outfp)
1010 {
1011 struct sys_event_table *sys_event_table;
1012
1013 print_system_event_mapping_table_prefix(outfp);
1014
1015 list_for_each_entry(sys_event_table, &sys_event_tables, list) {
1016 fprintf(outfp, "\n\t{\n\t\t.table = %s,\n\t\t.name = \"%s\",\n\t},",
1017 sys_event_table->soc_id,
1018 sys_event_table->soc_id);
1019 }
1020
1021 print_system_event_mapping_table_suffix(outfp);
1022
1023 return 0;
1024 }
1025
process_mapfile(FILE * outfp,char * fpath)1026 static int process_mapfile(FILE *outfp, char *fpath)
1027 {
1028 int n = 16384;
1029 FILE *mapfp;
1030 char *save = NULL;
1031 char *line, *p;
1032 int line_num;
1033 char *tblname;
1034 int ret = 0;
1035
1036 pr_info("%s: Processing mapfile %s\n", prog, fpath);
1037
1038 line = malloc(n);
1039 if (!line)
1040 return -1;
1041
1042 mapfp = fopen(fpath, "r");
1043 if (!mapfp) {
1044 pr_info("%s: Error %s opening %s\n", prog, strerror(errno),
1045 fpath);
1046 free(line);
1047 return -1;
1048 }
1049
1050 print_mapping_table_prefix(outfp);
1051
1052 /* Skip first line (header) */
1053 p = fgets(line, n, mapfp);
1054 if (!p)
1055 goto out;
1056
1057 line_num = 1;
1058 while (1) {
1059 char *cpuid, *version, *type, *fname;
1060
1061 line_num++;
1062 p = fgets(line, n, mapfp);
1063 if (!p)
1064 break;
1065
1066 if (line[0] == '#' || line[0] == '\n')
1067 continue;
1068
1069 if (line[strlen(line)-1] != '\n') {
1070 /* TODO Deal with lines longer than 16K */
1071 pr_info("%s: Mapfile %s: line %d too long, aborting\n",
1072 prog, fpath, line_num);
1073 ret = -1;
1074 goto out;
1075 }
1076 line[strlen(line)-1] = '\0';
1077
1078 cpuid = fixregex(strtok_r(p, ",", &save));
1079 version = strtok_r(NULL, ",", &save);
1080 fname = strtok_r(NULL, ",", &save);
1081 type = strtok_r(NULL, ",", &save);
1082
1083 tblname = file_name_to_table_name(fname);
1084 fprintf(outfp, "{\n");
1085 fprintf(outfp, "\t.cpuid = \"%s\",\n", cpuid);
1086 fprintf(outfp, "\t.version = \"%s\",\n", version);
1087 fprintf(outfp, "\t.type = \"%s\",\n", type);
1088
1089 /*
1090 * CHECK: We can't use the type (eg "core") field in the
1091 * table name. For us to do that, we need to somehow tweak
1092 * the other caller of file_name_to_table(), process_json()
1093 * to determine the type. process_json() file has no way
1094 * of knowing these are "core" events unless file name has
1095 * core in it. If filename has core in it, we can safely
1096 * ignore the type field here also.
1097 */
1098 fprintf(outfp, "\t.table = %s\n", tblname);
1099 fprintf(outfp, "},\n");
1100 }
1101
1102 out:
1103 print_mapping_test_table(outfp);
1104 print_mapping_table_suffix(outfp);
1105 fclose(mapfp);
1106 free(line);
1107 return ret;
1108 }
1109
1110 /*
1111 * If we fail to locate/process JSON and map files, create a NULL mapping
1112 * table. This would at least allow perf to build even if we can't find/use
1113 * the aliases.
1114 */
create_empty_mapping(const char * output_file)1115 static void create_empty_mapping(const char *output_file)
1116 {
1117 FILE *outfp;
1118
1119 pr_info("%s: Creating empty pmu_events_map[] table\n", prog);
1120
1121 /* Truncate file to clear any partial writes to it */
1122 outfp = fopen(output_file, "w");
1123 if (!outfp) {
1124 perror("fopen()");
1125 _Exit(1);
1126 }
1127
1128 fprintf(outfp, "#include \"pmu-events/pmu-events.h\"\n");
1129 print_mapping_table_prefix(outfp);
1130 print_mapping_table_suffix(outfp);
1131 print_system_event_mapping_table_prefix(outfp);
1132 print_system_event_mapping_table_suffix(outfp);
1133 fclose(outfp);
1134 }
1135
get_maxfds(void)1136 static int get_maxfds(void)
1137 {
1138 struct rlimit rlim;
1139
1140 if (getrlimit(RLIMIT_NOFILE, &rlim) == 0) {
1141 if (rlim.rlim_max == RLIM_INFINITY)
1142 return 512;
1143 return MIN(rlim.rlim_max / 2, 512);
1144 }
1145
1146 return 512;
1147 }
1148
1149 /*
1150 * nftw() doesn't let us pass an argument to the processing function,
1151 * so use a global variables.
1152 */
1153 static FILE *eventsfp;
1154 static char *mapfile;
1155
is_leaf_dir(const char * fpath)1156 static int is_leaf_dir(const char *fpath)
1157 {
1158 DIR *d;
1159 struct dirent *dir;
1160 int res = 1;
1161
1162 d = opendir(fpath);
1163 if (!d)
1164 return 0;
1165
1166 while ((dir = readdir(d)) != NULL) {
1167 if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
1168 continue;
1169
1170 if (dir->d_type == DT_DIR) {
1171 res = 0;
1172 break;
1173 } else if (dir->d_type == DT_UNKNOWN) {
1174 char path[PATH_MAX];
1175 struct stat st;
1176
1177 snprintf(path, sizeof(path), "%s/%s", fpath, dir->d_name);
1178 if (stat(path, &st))
1179 break;
1180
1181 if (S_ISDIR(st.st_mode)) {
1182 res = 0;
1183 break;
1184 }
1185 }
1186 }
1187
1188 closedir(d);
1189
1190 return res;
1191 }
1192
is_json_file(const char * name)1193 static int is_json_file(const char *name)
1194 {
1195 const char *suffix;
1196
1197 if (strlen(name) < 5)
1198 return 0;
1199
1200 suffix = name + strlen(name) - 5;
1201
1202 if (strncmp(suffix, ".json", 5) == 0)
1203 return 1;
1204 return 0;
1205 }
1206
preprocess_arch_std_files(const char * fpath,const struct stat * sb,int typeflag,struct FTW * ftwbuf)1207 static int preprocess_arch_std_files(const char *fpath, const struct stat *sb,
1208 int typeflag, struct FTW *ftwbuf)
1209 {
1210 int level = ftwbuf->level;
1211 int is_file = typeflag == FTW_F;
1212
1213 if (level == 1 && is_file && is_json_file(fpath))
1214 return json_events(fpath, save_arch_std_events, (void *)(uintptr_t)sb);
1215
1216 return 0;
1217 }
1218
process_one_file(const char * fpath,const struct stat * sb,int typeflag,struct FTW * ftwbuf)1219 static int process_one_file(const char *fpath, const struct stat *sb,
1220 int typeflag, struct FTW *ftwbuf)
1221 {
1222 char *tblname, *bname;
1223 int is_dir = typeflag == FTW_D;
1224 int is_file = typeflag == FTW_F;
1225 int level = ftwbuf->level;
1226 int err = 0;
1227
1228 if (level >= 2 && is_dir) {
1229 int count = 0;
1230 /*
1231 * For level 2 directory, bname will include parent name,
1232 * like vendor/platform. So search back from platform dir
1233 * to find this.
1234 * Something similar for level 3 directory, but we're a PMU
1235 * category folder, like vendor/platform/cpu.
1236 */
1237 bname = (char *) fpath + ftwbuf->base - 2;
1238 for (;;) {
1239 if (*bname == '/')
1240 count++;
1241 if (count == level - 1)
1242 break;
1243 bname--;
1244 }
1245 bname++;
1246 } else
1247 bname = (char *) fpath + ftwbuf->base;
1248
1249 pr_debug("%s %d %7jd %-20s %s\n",
1250 is_file ? "f" : is_dir ? "d" : "x",
1251 level, sb->st_size, bname, fpath);
1252
1253 /* base dir or too deep */
1254 if (level == 0 || level > 4)
1255 return 0;
1256
1257
1258 /* model directory, reset topic */
1259 if ((level == 1 && is_dir && is_leaf_dir(fpath)) ||
1260 (level >= 2 && is_dir && is_leaf_dir(fpath))) {
1261 if (close_table)
1262 print_events_table_suffix(eventsfp);
1263
1264 /*
1265 * Drop file name suffix. Replace hyphens with underscores.
1266 * Fail if file name contains any alphanum characters besides
1267 * underscores.
1268 */
1269 tblname = file_name_to_table_name(bname);
1270 if (!tblname) {
1271 pr_info("%s: Error determining table name for %s\n", prog,
1272 bname);
1273 return -1;
1274 }
1275
1276 if (is_sys_dir(bname)) {
1277 struct sys_event_table *sys_event_table;
1278
1279 sys_event_table = malloc(sizeof(*sys_event_table));
1280 if (!sys_event_table)
1281 return -1;
1282
1283 sys_event_table->soc_id = strdup(tblname);
1284 if (!sys_event_table->soc_id) {
1285 free(sys_event_table);
1286 return -1;
1287 }
1288 list_add_tail(&sys_event_table->list,
1289 &sys_event_tables);
1290 }
1291
1292 print_events_table_prefix(eventsfp, tblname);
1293 return 0;
1294 }
1295
1296 /*
1297 * Save the mapfile name for now. We will process mapfile
1298 * after processing all JSON files (so we can write out the
1299 * mapping table after all PMU events tables).
1300 *
1301 */
1302 if (level == 1 && is_file) {
1303 if (!strcmp(bname, "mapfile.csv")) {
1304 mapfile = strdup(fpath);
1305 return 0;
1306 }
1307 if (is_json_file(bname))
1308 pr_debug("%s: ArchStd json is preprocessed %s\n", prog, fpath);
1309 else
1310 pr_info("%s: Ignoring file %s\n", prog, fpath);
1311 return 0;
1312 }
1313
1314 /*
1315 * If the file name does not have a .json extension,
1316 * ignore it. It could be a readme.txt for instance.
1317 */
1318 if (is_file) {
1319 if (!is_json_file(bname)) {
1320 pr_info("%s: Ignoring file without .json suffix %s\n", prog,
1321 fpath);
1322 return 0;
1323 }
1324 }
1325
1326 if (level > 1 && add_topic(bname))
1327 return -ENOMEM;
1328
1329 /*
1330 * Assume all other files are JSON files.
1331 *
1332 * If mapfile refers to 'power7_core.json', we create a table
1333 * named 'power7_core'. Any inconsistencies between the mapfile
1334 * and directory tree could result in build failure due to table
1335 * names not being found.
1336 *
1337 * At least for now, be strict with processing JSON file names.
1338 * i.e. if JSON file name cannot be mapped to C-style table name,
1339 * fail.
1340 */
1341 if (is_file) {
1342 struct perf_entry_data data = {
1343 .topic = get_topic(),
1344 .outfp = eventsfp,
1345 };
1346
1347 err = json_events(fpath, print_events_table_entry, &data);
1348
1349 free(data.topic);
1350 }
1351
1352 return err;
1353 }
1354
1355 #ifndef PATH_MAX
1356 #define PATH_MAX 4096
1357 #endif
1358
1359 /*
1360 * Starting in directory 'start_dirname', find the "mapfile.csv" and
1361 * the set of JSON files for the architecture 'arch'.
1362 *
1363 * From each JSON file, create a C-style "PMU events table" from the
1364 * JSON file (see struct pmu_event).
1365 *
1366 * From the mapfile, create a mapping between the CPU revisions and
1367 * PMU event tables (see struct pmu_events_map).
1368 *
1369 * Write out the PMU events tables and the mapping table to pmu-event.c.
1370 */
main(int argc,char * argv[])1371 int main(int argc, char *argv[])
1372 {
1373 int rc, ret = 0, empty_map = 0;
1374 int maxfds;
1375 char ldirname[PATH_MAX];
1376 const char *arch;
1377 const char *output_file;
1378 const char *start_dirname;
1379 const char *err_string_ext = "";
1380 struct stat stbuf;
1381
1382 prog = basename(argv[0]);
1383 if (argc < 4) {
1384 pr_err("Usage: %s <arch> <starting_dir> <output_file>\n", prog);
1385 return 1;
1386 }
1387
1388 arch = argv[1];
1389 start_dirname = argv[2];
1390 output_file = argv[3];
1391
1392 if (argc > 4)
1393 verbose = atoi(argv[4]);
1394
1395 eventsfp = fopen(output_file, "w");
1396 if (!eventsfp) {
1397 pr_err("%s Unable to create required file %s (%s)\n",
1398 prog, output_file, strerror(errno));
1399 return 2;
1400 }
1401
1402 snprintf(ldirname, sizeof(ldirname), "%s/%s", start_dirname, arch);
1403
1404 /* If architecture does not have any event lists, bail out */
1405 if (stat(ldirname, &stbuf) < 0) {
1406 pr_info("%s: Arch %s has no PMU event lists\n", prog, arch);
1407 empty_map = 1;
1408 goto err_close_eventsfp;
1409 }
1410
1411 /* Include pmu-events.h first */
1412 fprintf(eventsfp, "#include \"pmu-events/pmu-events.h\"\n");
1413
1414 /*
1415 * The mapfile allows multiple CPUids to point to the same JSON file,
1416 * so, not sure if there is a need for symlinks within the pmu-events
1417 * directory.
1418 *
1419 * For now, treat symlinks of JSON files as regular files and create
1420 * separate tables for each symlink (presumably, each symlink refers
1421 * to specific version of the CPU).
1422 */
1423
1424 maxfds = get_maxfds();
1425 rc = nftw(ldirname, preprocess_arch_std_files, maxfds, 0);
1426 if (rc)
1427 goto err_processing_std_arch_event_dir;
1428
1429 rc = nftw(ldirname, process_one_file, maxfds, 0);
1430 if (rc)
1431 goto err_processing_dir;
1432
1433 sprintf(ldirname, "%s/test", start_dirname);
1434
1435 rc = nftw(ldirname, preprocess_arch_std_files, maxfds, 0);
1436 if (rc)
1437 goto err_processing_std_arch_event_dir;
1438
1439 rc = nftw(ldirname, process_one_file, maxfds, 0);
1440 if (rc)
1441 goto err_processing_dir;
1442
1443 if (close_table)
1444 print_events_table_suffix(eventsfp);
1445
1446 if (!mapfile) {
1447 pr_info("%s: No CPU->JSON mapping?\n", prog);
1448 empty_map = 1;
1449 goto err_close_eventsfp;
1450 }
1451
1452 rc = process_mapfile(eventsfp, mapfile);
1453 if (rc) {
1454 pr_info("%s: Error processing mapfile %s\n", prog, mapfile);
1455 /* Make build fail */
1456 ret = 1;
1457 goto err_close_eventsfp;
1458 }
1459
1460 rc = process_system_event_tables(eventsfp);
1461 fclose(eventsfp);
1462 if (rc) {
1463 ret = 1;
1464 goto err_out;
1465 }
1466
1467 free_arch_std_events();
1468 free_sys_event_tables();
1469 free(mapfile);
1470 return 0;
1471
1472 err_processing_std_arch_event_dir:
1473 err_string_ext = " for std arch event";
1474 err_processing_dir:
1475 if (verbose) {
1476 pr_info("%s: Error walking file tree %s%s\n", prog, ldirname,
1477 err_string_ext);
1478 empty_map = 1;
1479 } else if (rc < 0) {
1480 ret = 1;
1481 } else {
1482 empty_map = 1;
1483 }
1484 err_close_eventsfp:
1485 fclose(eventsfp);
1486 if (empty_map)
1487 create_empty_mapping(output_file);
1488 err_out:
1489 free_arch_std_events();
1490 free_sys_event_tables();
1491 free(mapfile);
1492 return ret;
1493 }
1494
1495 #include <fts.h>
1496
1497 static int
1498 #if defined(__linux__) || defined(__APPLE__)
fts_compare(const FTSENT ** a,const FTSENT ** b)1499 fts_compare(const FTSENT **a, const FTSENT **b)
1500 #else
1501 fts_compare(const FTSENT * const *a, const FTSENT * const *b)
1502 #endif
1503 {
1504 return (strcmp((*a)->fts_name, (*b)->fts_name));
1505 }
1506
1507 static int
nftw_ordered(const char * path,int (* fn)(const char *,const struct stat *,int,struct FTW *),int nfds,int ftwflags)1508 nftw_ordered(const char *path, int (*fn)(const char *, const struct stat *, int,
1509 struct FTW *), int nfds, int ftwflags)
1510 {
1511 char * const paths[2] = { (char *)path, NULL };
1512 struct FTW ftw;
1513 FTSENT *cur;
1514 FTS *ftsp;
1515 int error = 0, ftsflags, fnflag, postorder, sverrno;
1516
1517 /* XXX - nfds is currently unused */
1518 if (nfds < 1) {
1519 errno = EINVAL;
1520 return (-1);
1521 }
1522
1523 ftsflags = FTS_COMFOLLOW;
1524 if (!(ftwflags & FTW_CHDIR))
1525 ftsflags |= FTS_NOCHDIR;
1526 if (ftwflags & FTW_MOUNT)
1527 ftsflags |= FTS_XDEV;
1528 if (ftwflags & FTW_PHYS)
1529 ftsflags |= FTS_PHYSICAL;
1530 else
1531 ftsflags |= FTS_LOGICAL;
1532 postorder = (ftwflags & FTW_DEPTH) != 0;
1533 ftsp = fts_open(paths, ftsflags, fts_compare);
1534 if (ftsp == NULL)
1535 return (-1);
1536 while ((cur = fts_read(ftsp)) != NULL) {
1537 switch (cur->fts_info) {
1538 case FTS_D:
1539 if (postorder)
1540 continue;
1541 fnflag = FTW_D;
1542 break;
1543 case FTS_DC:
1544 continue;
1545 case FTS_DNR:
1546 fnflag = FTW_DNR;
1547 break;
1548 case FTS_DP:
1549 if (!postorder)
1550 continue;
1551 fnflag = FTW_DP;
1552 break;
1553 case FTS_F:
1554 case FTS_DEFAULT:
1555 fnflag = FTW_F;
1556 break;
1557 case FTS_NS:
1558 case FTS_NSOK:
1559 fnflag = FTW_NS;
1560 break;
1561 case FTS_SL:
1562 fnflag = FTW_SL;
1563 break;
1564 case FTS_SLNONE:
1565 fnflag = FTW_SLN;
1566 break;
1567 default:
1568 error = -1;
1569 goto done;
1570 }
1571 ftw.base = cur->fts_pathlen - cur->fts_namelen;
1572 ftw.level = cur->fts_level;
1573 error = fn(cur->fts_path, cur->fts_statp, fnflag, &ftw);
1574 if (error != 0)
1575 break;
1576 }
1577 done:
1578 sverrno = errno;
1579 if (fts_close(ftsp) != 0 && error == 0)
1580 error = -1;
1581 else
1582 errno = sverrno;
1583 return (error);
1584 }
1585