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1// SPDX-License-Identifier: GPL-2.02#include <linux/hw_breakpoint.h>3#include <linux/err.h>4#include <linux/list_sort.h>5#include <linux/zalloc.h>6#include <dirent.h>7#include <errno.h>8#include <sys/ioctl.h>9#include <sys/param.h>10#include "term.h"11#include "env.h"12#include "evlist.h"13#include "evsel.h"14#include <subcmd/parse-options.h>15#include "parse-events.h"16#include "string2.h"17#include "strbuf.h"18#include "debug.h"19#include <api/fs/tracing_path.h>20#include <perf/cpumap.h>21#include <util/parse-events-bison.h>22#include <util/parse-events-flex.h>23#include "pmu.h"24#include "pmus.h"25#include "asm/bug.h"26#include "util/parse-branch-options.h"27#include "util/evsel_config.h"28#include "util/event.h"29#include "util/bpf-filter.h"30#include "util/util.h"31#include "tracepoint.h"32 33#define MAX_NAME_LEN 10034 35static int get_config_terms(const struct parse_events_terms *head_config,36 struct list_head *head_terms);37static int parse_events_terms__copy(const struct parse_events_terms *src,38 struct parse_events_terms *dest);39 40const struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = {41 [PERF_COUNT_HW_CPU_CYCLES] = {42 .symbol = "cpu-cycles",43 .alias = "cycles",44 },45 [PERF_COUNT_HW_INSTRUCTIONS] = {46 .symbol = "instructions",47 .alias = "",48 },49 [PERF_COUNT_HW_CACHE_REFERENCES] = {50 .symbol = "cache-references",51 .alias = "",52 },53 [PERF_COUNT_HW_CACHE_MISSES] = {54 .symbol = "cache-misses",55 .alias = "",56 },57 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = {58 .symbol = "branch-instructions",59 .alias = "branches",60 },61 [PERF_COUNT_HW_BRANCH_MISSES] = {62 .symbol = "branch-misses",63 .alias = "",64 },65 [PERF_COUNT_HW_BUS_CYCLES] = {66 .symbol = "bus-cycles",67 .alias = "",68 },69 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = {70 .symbol = "stalled-cycles-frontend",71 .alias = "idle-cycles-frontend",72 },73 [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = {74 .symbol = "stalled-cycles-backend",75 .alias = "idle-cycles-backend",76 },77 [PERF_COUNT_HW_REF_CPU_CYCLES] = {78 .symbol = "ref-cycles",79 .alias = "",80 },81};82 83const struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = {84 [PERF_COUNT_SW_CPU_CLOCK] = {85 .symbol = "cpu-clock",86 .alias = "",87 },88 [PERF_COUNT_SW_TASK_CLOCK] = {89 .symbol = "task-clock",90 .alias = "",91 },92 [PERF_COUNT_SW_PAGE_FAULTS] = {93 .symbol = "page-faults",94 .alias = "faults",95 },96 [PERF_COUNT_SW_CONTEXT_SWITCHES] = {97 .symbol = "context-switches",98 .alias = "cs",99 },100 [PERF_COUNT_SW_CPU_MIGRATIONS] = {101 .symbol = "cpu-migrations",102 .alias = "migrations",103 },104 [PERF_COUNT_SW_PAGE_FAULTS_MIN] = {105 .symbol = "minor-faults",106 .alias = "",107 },108 [PERF_COUNT_SW_PAGE_FAULTS_MAJ] = {109 .symbol = "major-faults",110 .alias = "",111 },112 [PERF_COUNT_SW_ALIGNMENT_FAULTS] = {113 .symbol = "alignment-faults",114 .alias = "",115 },116 [PERF_COUNT_SW_EMULATION_FAULTS] = {117 .symbol = "emulation-faults",118 .alias = "",119 },120 [PERF_COUNT_SW_DUMMY] = {121 .symbol = "dummy",122 .alias = "",123 },124 [PERF_COUNT_SW_BPF_OUTPUT] = {125 .symbol = "bpf-output",126 .alias = "",127 },128 [PERF_COUNT_SW_CGROUP_SWITCHES] = {129 .symbol = "cgroup-switches",130 .alias = "",131 },132};133 134const char *event_type(int type)135{136 switch (type) {137 case PERF_TYPE_HARDWARE:138 return "hardware";139 140 case PERF_TYPE_SOFTWARE:141 return "software";142 143 case PERF_TYPE_TRACEPOINT:144 return "tracepoint";145 146 case PERF_TYPE_HW_CACHE:147 return "hardware-cache";148 149 default:150 break;151 }152 153 return "unknown";154}155 156static char *get_config_str(const struct parse_events_terms *head_terms,157 enum parse_events__term_type type_term)158{159 struct parse_events_term *term;160 161 if (!head_terms)162 return NULL;163 164 list_for_each_entry(term, &head_terms->terms, list)165 if (term->type_term == type_term)166 return term->val.str;167 168 return NULL;169}170 171static char *get_config_metric_id(const struct parse_events_terms *head_terms)172{173 return get_config_str(head_terms, PARSE_EVENTS__TERM_TYPE_METRIC_ID);174}175 176static char *get_config_name(const struct parse_events_terms *head_terms)177{178 return get_config_str(head_terms, PARSE_EVENTS__TERM_TYPE_NAME);179}180 181/**182 * fix_raw - For each raw term see if there is an event (aka alias) in pmu that183 * matches the raw's string value. If the string value matches an184 * event then change the term to be an event, if not then change it to185 * be a config term. For example, "read" may be an event of the PMU or186 * a raw hex encoding of 0xead. The fix-up is done late so the PMU of187 * the event can be determined and we don't need to scan all PMUs188 * ahead-of-time.189 * @config_terms: the list of terms that may contain a raw term.190 * @pmu: the PMU to scan for events from.191 */192static void fix_raw(struct parse_events_terms *config_terms, struct perf_pmu *pmu)193{194 struct parse_events_term *term;195 196 list_for_each_entry(term, &config_terms->terms, list) {197 u64 num;198 199 if (term->type_term != PARSE_EVENTS__TERM_TYPE_RAW)200 continue;201 202 if (perf_pmu__have_event(pmu, term->val.str)) {203 zfree(&term->config);204 term->config = term->val.str;205 term->type_val = PARSE_EVENTS__TERM_TYPE_NUM;206 term->type_term = PARSE_EVENTS__TERM_TYPE_USER;207 term->val.num = 1;208 term->no_value = true;209 continue;210 }211 212 zfree(&term->config);213 term->config = strdup("config");214 errno = 0;215 num = strtoull(term->val.str + 1, NULL, 16);216 assert(errno == 0);217 free(term->val.str);218 term->type_val = PARSE_EVENTS__TERM_TYPE_NUM;219 term->type_term = PARSE_EVENTS__TERM_TYPE_CONFIG;220 term->val.num = num;221 term->no_value = false;222 }223}224 225static struct evsel *226__add_event(struct list_head *list, int *idx,227 struct perf_event_attr *attr,228 bool init_attr,229 const char *name, const char *metric_id, struct perf_pmu *pmu,230 struct list_head *config_terms, bool auto_merge_stats,231 struct perf_cpu_map *cpu_list)232{233 struct evsel *evsel;234 struct perf_cpu_map *cpus = perf_cpu_map__is_empty(cpu_list) && pmu ? pmu->cpus : cpu_list;235 236 cpus = perf_cpu_map__get(cpus);237 if (pmu)238 perf_pmu__warn_invalid_formats(pmu);239 240 if (pmu && (attr->type == PERF_TYPE_RAW || attr->type >= PERF_TYPE_MAX)) {241 perf_pmu__warn_invalid_config(pmu, attr->config, name,242 PERF_PMU_FORMAT_VALUE_CONFIG, "config");243 perf_pmu__warn_invalid_config(pmu, attr->config1, name,244 PERF_PMU_FORMAT_VALUE_CONFIG1, "config1");245 perf_pmu__warn_invalid_config(pmu, attr->config2, name,246 PERF_PMU_FORMAT_VALUE_CONFIG2, "config2");247 perf_pmu__warn_invalid_config(pmu, attr->config3, name,248 PERF_PMU_FORMAT_VALUE_CONFIG3, "config3");249 }250 if (init_attr)251 event_attr_init(attr);252 253 evsel = evsel__new_idx(attr, *idx);254 if (!evsel) {255 perf_cpu_map__put(cpus);256 return NULL;257 }258 259 (*idx)++;260 evsel->core.cpus = cpus;261 evsel->core.own_cpus = perf_cpu_map__get(cpus);262 evsel->core.requires_cpu = pmu ? pmu->is_uncore : false;263 evsel->core.is_pmu_core = pmu ? pmu->is_core : false;264 evsel->auto_merge_stats = auto_merge_stats;265 evsel->pmu = pmu;266 evsel->pmu_name = pmu ? strdup(pmu->name) : NULL;267 268 if (name)269 evsel->name = strdup(name);270 271 if (metric_id)272 evsel->metric_id = strdup(metric_id);273 274 if (config_terms)275 list_splice_init(config_terms, &evsel->config_terms);276 277 if (list)278 list_add_tail(&evsel->core.node, list);279 280 return evsel;281}282 283struct evsel *parse_events__add_event(int idx, struct perf_event_attr *attr,284 const char *name, const char *metric_id,285 struct perf_pmu *pmu)286{287 return __add_event(/*list=*/NULL, &idx, attr, /*init_attr=*/false, name,288 metric_id, pmu, /*config_terms=*/NULL,289 /*auto_merge_stats=*/false, /*cpu_list=*/NULL);290}291 292static int add_event(struct list_head *list, int *idx,293 struct perf_event_attr *attr, const char *name,294 const char *metric_id, struct list_head *config_terms)295{296 return __add_event(list, idx, attr, /*init_attr*/true, name, metric_id,297 /*pmu=*/NULL, config_terms,298 /*auto_merge_stats=*/false, /*cpu_list=*/NULL) ? 0 : -ENOMEM;299}300 301static int add_event_tool(struct list_head *list, int *idx,302 enum perf_tool_event tool_event)303{304 struct evsel *evsel;305 struct perf_event_attr attr = {306 .type = PERF_TYPE_SOFTWARE,307 .config = PERF_COUNT_SW_DUMMY,308 };309 struct perf_cpu_map *cpu_list = NULL;310 311 if (tool_event == PERF_TOOL_DURATION_TIME) {312 /* Duration time is gathered globally, pretend it is only on CPU0. */313 cpu_list = perf_cpu_map__new("0");314 }315 evsel = __add_event(list, idx, &attr, /*init_attr=*/true, /*name=*/NULL,316 /*metric_id=*/NULL, /*pmu=*/NULL,317 /*config_terms=*/NULL, /*auto_merge_stats=*/false,318 cpu_list);319 perf_cpu_map__put(cpu_list);320 if (!evsel)321 return -ENOMEM;322 evsel->tool_event = tool_event;323 if (tool_event == PERF_TOOL_DURATION_TIME324 || tool_event == PERF_TOOL_USER_TIME325 || tool_event == PERF_TOOL_SYSTEM_TIME) {326 free((char *)evsel->unit);327 evsel->unit = strdup("ns");328 }329 return 0;330}331 332/**333 * parse_aliases - search names for entries beginning or equalling str ignoring334 * case. If mutliple entries in names match str then the longest335 * is chosen.336 * @str: The needle to look for.337 * @names: The haystack to search.338 * @size: The size of the haystack.339 * @longest: Out argument giving the length of the matching entry.340 */341static int parse_aliases(const char *str, const char *const names[][EVSEL__MAX_ALIASES], int size,342 int *longest)343{344 *longest = -1;345 for (int i = 0; i < size; i++) {346 for (int j = 0; j < EVSEL__MAX_ALIASES && names[i][j]; j++) {347 int n = strlen(names[i][j]);348 349 if (n > *longest && !strncasecmp(str, names[i][j], n))350 *longest = n;351 }352 if (*longest > 0)353 return i;354 }355 356 return -1;357}358 359typedef int config_term_func_t(struct perf_event_attr *attr,360 struct parse_events_term *term,361 struct parse_events_error *err);362static int config_term_common(struct perf_event_attr *attr,363 struct parse_events_term *term,364 struct parse_events_error *err);365static int config_attr(struct perf_event_attr *attr,366 const struct parse_events_terms *head,367 struct parse_events_error *err,368 config_term_func_t config_term);369 370/**371 * parse_events__decode_legacy_cache - Search name for the legacy cache event372 * name composed of 1, 2 or 3 hyphen373 * separated sections. The first section is374 * the cache type while the others are the375 * optional op and optional result. To make376 * life hard the names in the table also377 * contain hyphens and the longest name378 * should always be selected.379 */380int parse_events__decode_legacy_cache(const char *name, int extended_pmu_type, __u64 *config)381{382 int len, cache_type = -1, cache_op = -1, cache_result = -1;383 const char *name_end = &name[strlen(name) + 1];384 const char *str = name;385 386 cache_type = parse_aliases(str, evsel__hw_cache, PERF_COUNT_HW_CACHE_MAX, &len);387 if (cache_type == -1)388 return -EINVAL;389 str += len + 1;390 391 if (str < name_end) {392 cache_op = parse_aliases(str, evsel__hw_cache_op,393 PERF_COUNT_HW_CACHE_OP_MAX, &len);394 if (cache_op >= 0) {395 if (!evsel__is_cache_op_valid(cache_type, cache_op))396 return -EINVAL;397 str += len + 1;398 } else {399 cache_result = parse_aliases(str, evsel__hw_cache_result,400 PERF_COUNT_HW_CACHE_RESULT_MAX, &len);401 if (cache_result >= 0)402 str += len + 1;403 }404 }405 if (str < name_end) {406 if (cache_op < 0) {407 cache_op = parse_aliases(str, evsel__hw_cache_op,408 PERF_COUNT_HW_CACHE_OP_MAX, &len);409 if (cache_op >= 0) {410 if (!evsel__is_cache_op_valid(cache_type, cache_op))411 return -EINVAL;412 }413 } else if (cache_result < 0) {414 cache_result = parse_aliases(str, evsel__hw_cache_result,415 PERF_COUNT_HW_CACHE_RESULT_MAX, &len);416 }417 }418 419 /*420 * Fall back to reads:421 */422 if (cache_op == -1)423 cache_op = PERF_COUNT_HW_CACHE_OP_READ;424 425 /*426 * Fall back to accesses:427 */428 if (cache_result == -1)429 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS;430 431 *config = cache_type | (cache_op << 8) | (cache_result << 16);432 if (perf_pmus__supports_extended_type())433 *config |= (__u64)extended_pmu_type << PERF_PMU_TYPE_SHIFT;434 return 0;435}436 437/**438 * parse_events__filter_pmu - returns false if a wildcard PMU should be439 * considered, true if it should be filtered.440 */441bool parse_events__filter_pmu(const struct parse_events_state *parse_state,442 const struct perf_pmu *pmu)443{444 if (parse_state->pmu_filter == NULL)445 return false;446 447 return strcmp(parse_state->pmu_filter, pmu->name) != 0;448}449 450static int parse_events_add_pmu(struct parse_events_state *parse_state,451 struct list_head *list, struct perf_pmu *pmu,452 const struct parse_events_terms *const_parsed_terms,453 bool auto_merge_stats);454 455int parse_events_add_cache(struct list_head *list, int *idx, const char *name,456 struct parse_events_state *parse_state,457 struct parse_events_terms *parsed_terms)458{459 struct perf_pmu *pmu = NULL;460 bool found_supported = false;461 const char *config_name = get_config_name(parsed_terms);462 const char *metric_id = get_config_metric_id(parsed_terms);463 464 while ((pmu = perf_pmus__scan(pmu)) != NULL) {465 LIST_HEAD(config_terms);466 struct perf_event_attr attr;467 int ret;468 469 if (parse_events__filter_pmu(parse_state, pmu))470 continue;471 472 if (perf_pmu__have_event(pmu, name)) {473 /*474 * The PMU has the event so add as not a legacy cache475 * event.476 */477 ret = parse_events_add_pmu(parse_state, list, pmu,478 parsed_terms,479 perf_pmu__auto_merge_stats(pmu));480 if (ret)481 return ret;482 continue;483 }484 485 if (!pmu->is_core) {486 /* Legacy cache events are only supported by core PMUs. */487 continue;488 }489 490 memset(&attr, 0, sizeof(attr));491 attr.type = PERF_TYPE_HW_CACHE;492 493 ret = parse_events__decode_legacy_cache(name, pmu->type, &attr.config);494 if (ret)495 return ret;496 497 found_supported = true;498 499 if (parsed_terms) {500 if (config_attr(&attr, parsed_terms, parse_state->error,501 config_term_common))502 return -EINVAL;503 504 if (get_config_terms(parsed_terms, &config_terms))505 return -ENOMEM;506 }507 508 if (__add_event(list, idx, &attr, /*init_attr*/true, config_name ?: name,509 metric_id, pmu, &config_terms, /*auto_merge_stats=*/false,510 /*cpu_list=*/NULL) == NULL)511 return -ENOMEM;512 513 free_config_terms(&config_terms);514 }515 return found_supported ? 0 : -EINVAL;516}517 518#ifdef HAVE_LIBTRACEEVENT519static void tracepoint_error(struct parse_events_error *e, int err,520 const char *sys, const char *name, int column)521{522 const char *str;523 char help[BUFSIZ];524 525 if (!e)526 return;527 528 /*529 * We get error directly from syscall errno ( > 0),530 * or from encoded pointer's error ( < 0).531 */532 err = abs(err);533 534 switch (err) {535 case EACCES:536 str = "can't access trace events";537 break;538 case ENOENT:539 str = "unknown tracepoint";540 break;541 default:542 str = "failed to add tracepoint";543 break;544 }545 546 tracing_path__strerror_open_tp(err, help, sizeof(help), sys, name);547 parse_events_error__handle(e, column, strdup(str), strdup(help));548}549 550static int add_tracepoint(struct parse_events_state *parse_state,551 struct list_head *list,552 const char *sys_name, const char *evt_name,553 struct parse_events_error *err,554 struct parse_events_terms *head_config, void *loc_)555{556 YYLTYPE *loc = loc_;557 struct evsel *evsel = evsel__newtp_idx(sys_name, evt_name, parse_state->idx++,558 !parse_state->fake_tp);559 560 if (IS_ERR(evsel)) {561 tracepoint_error(err, PTR_ERR(evsel), sys_name, evt_name, loc->first_column);562 return PTR_ERR(evsel);563 }564 565 if (head_config) {566 LIST_HEAD(config_terms);567 568 if (get_config_terms(head_config, &config_terms))569 return -ENOMEM;570 list_splice(&config_terms, &evsel->config_terms);571 }572 573 list_add_tail(&evsel->core.node, list);574 return 0;575}576 577static int add_tracepoint_multi_event(struct parse_events_state *parse_state,578 struct list_head *list,579 const char *sys_name, const char *evt_name,580 struct parse_events_error *err,581 struct parse_events_terms *head_config, YYLTYPE *loc)582{583 char *evt_path;584 struct dirent *evt_ent;585 DIR *evt_dir;586 int ret = 0, found = 0;587 588 evt_path = get_events_file(sys_name);589 if (!evt_path) {590 tracepoint_error(err, errno, sys_name, evt_name, loc->first_column);591 return -1;592 }593 evt_dir = opendir(evt_path);594 if (!evt_dir) {595 put_events_file(evt_path);596 tracepoint_error(err, errno, sys_name, evt_name, loc->first_column);597 return -1;598 }599 600 while (!ret && (evt_ent = readdir(evt_dir))) {601 if (!strcmp(evt_ent->d_name, ".")602 || !strcmp(evt_ent->d_name, "..")603 || !strcmp(evt_ent->d_name, "enable")604 || !strcmp(evt_ent->d_name, "filter"))605 continue;606 607 if (!strglobmatch(evt_ent->d_name, evt_name))608 continue;609 610 found++;611 612 ret = add_tracepoint(parse_state, list, sys_name, evt_ent->d_name,613 err, head_config, loc);614 }615 616 if (!found) {617 tracepoint_error(err, ENOENT, sys_name, evt_name, loc->first_column);618 ret = -1;619 }620 621 put_events_file(evt_path);622 closedir(evt_dir);623 return ret;624}625 626static int add_tracepoint_event(struct parse_events_state *parse_state,627 struct list_head *list,628 const char *sys_name, const char *evt_name,629 struct parse_events_error *err,630 struct parse_events_terms *head_config, YYLTYPE *loc)631{632 return strpbrk(evt_name, "*?") ?633 add_tracepoint_multi_event(parse_state, list, sys_name, evt_name,634 err, head_config, loc) :635 add_tracepoint(parse_state, list, sys_name, evt_name,636 err, head_config, loc);637}638 639static int add_tracepoint_multi_sys(struct parse_events_state *parse_state,640 struct list_head *list,641 const char *sys_name, const char *evt_name,642 struct parse_events_error *err,643 struct parse_events_terms *head_config, YYLTYPE *loc)644{645 struct dirent *events_ent;646 DIR *events_dir;647 int ret = 0;648 649 events_dir = tracing_events__opendir();650 if (!events_dir) {651 tracepoint_error(err, errno, sys_name, evt_name, loc->first_column);652 return -1;653 }654 655 while (!ret && (events_ent = readdir(events_dir))) {656 if (!strcmp(events_ent->d_name, ".")657 || !strcmp(events_ent->d_name, "..")658 || !strcmp(events_ent->d_name, "enable")659 || !strcmp(events_ent->d_name, "header_event")660 || !strcmp(events_ent->d_name, "header_page"))661 continue;662 663 if (!strglobmatch(events_ent->d_name, sys_name))664 continue;665 666 ret = add_tracepoint_event(parse_state, list, events_ent->d_name,667 evt_name, err, head_config, loc);668 }669 670 closedir(events_dir);671 return ret;672}673#endif /* HAVE_LIBTRACEEVENT */674 675size_t default_breakpoint_len(void)676{677#if defined(__i386__)678 static int len;679 680 if (len == 0) {681 struct perf_env env = {};682 683 perf_env__init(&env);684 len = perf_env__kernel_is_64_bit(&env) ? sizeof(u64) : sizeof(long);685 perf_env__exit(&env);686 }687 return len;688#elif defined(__aarch64__)689 return 4;690#else691 return sizeof(long);692#endif693}694 695static int696parse_breakpoint_type(const char *type, struct perf_event_attr *attr)697{698 int i;699 700 for (i = 0; i < 3; i++) {701 if (!type || !type[i])702 break;703 704#define CHECK_SET_TYPE(bit) \705do { \706 if (attr->bp_type & bit) \707 return -EINVAL; \708 else \709 attr->bp_type |= bit; \710} while (0)711 712 switch (type[i]) {713 case 'r':714 CHECK_SET_TYPE(HW_BREAKPOINT_R);715 break;716 case 'w':717 CHECK_SET_TYPE(HW_BREAKPOINT_W);718 break;719 case 'x':720 CHECK_SET_TYPE(HW_BREAKPOINT_X);721 break;722 default:723 return -EINVAL;724 }725 }726 727#undef CHECK_SET_TYPE728 729 if (!attr->bp_type) /* Default */730 attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;731 732 return 0;733}734 735int parse_events_add_breakpoint(struct parse_events_state *parse_state,736 struct list_head *list,737 u64 addr, char *type, u64 len,738 struct parse_events_terms *head_config)739{740 struct perf_event_attr attr;741 LIST_HEAD(config_terms);742 const char *name;743 744 memset(&attr, 0, sizeof(attr));745 attr.bp_addr = addr;746 747 if (parse_breakpoint_type(type, &attr))748 return -EINVAL;749 750 /* Provide some defaults if len is not specified */751 if (!len) {752 if (attr.bp_type == HW_BREAKPOINT_X)753 len = default_breakpoint_len();754 else755 len = HW_BREAKPOINT_LEN_4;756 }757 758 attr.bp_len = len;759 760 attr.type = PERF_TYPE_BREAKPOINT;761 attr.sample_period = 1;762 763 if (head_config) {764 if (config_attr(&attr, head_config, parse_state->error,765 config_term_common))766 return -EINVAL;767 768 if (get_config_terms(head_config, &config_terms))769 return -ENOMEM;770 }771 772 name = get_config_name(head_config);773 774 return add_event(list, &parse_state->idx, &attr, name, /*mertic_id=*/NULL,775 &config_terms);776}777 778static int check_type_val(struct parse_events_term *term,779 struct parse_events_error *err,780 enum parse_events__term_val_type type)781{782 if (type == term->type_val)783 return 0;784 785 if (err) {786 parse_events_error__handle(err, term->err_val,787 type == PARSE_EVENTS__TERM_TYPE_NUM788 ? strdup("expected numeric value")789 : strdup("expected string value"),790 NULL);791 }792 return -EINVAL;793}794 795static bool config_term_shrinked;796 797static const char *config_term_name(enum parse_events__term_type term_type)798{799 /*800 * Update according to parse-events.l801 */802 static const char *config_term_names[__PARSE_EVENTS__TERM_TYPE_NR] = {803 [PARSE_EVENTS__TERM_TYPE_USER] = "<sysfs term>",804 [PARSE_EVENTS__TERM_TYPE_CONFIG] = "config",805 [PARSE_EVENTS__TERM_TYPE_CONFIG1] = "config1",806 [PARSE_EVENTS__TERM_TYPE_CONFIG2] = "config2",807 [PARSE_EVENTS__TERM_TYPE_CONFIG3] = "config3",808 [PARSE_EVENTS__TERM_TYPE_NAME] = "name",809 [PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD] = "period",810 [PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ] = "freq",811 [PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE] = "branch_type",812 [PARSE_EVENTS__TERM_TYPE_TIME] = "time",813 [PARSE_EVENTS__TERM_TYPE_CALLGRAPH] = "call-graph",814 [PARSE_EVENTS__TERM_TYPE_STACKSIZE] = "stack-size",815 [PARSE_EVENTS__TERM_TYPE_NOINHERIT] = "no-inherit",816 [PARSE_EVENTS__TERM_TYPE_INHERIT] = "inherit",817 [PARSE_EVENTS__TERM_TYPE_MAX_STACK] = "max-stack",818 [PARSE_EVENTS__TERM_TYPE_MAX_EVENTS] = "nr",819 [PARSE_EVENTS__TERM_TYPE_OVERWRITE] = "overwrite",820 [PARSE_EVENTS__TERM_TYPE_NOOVERWRITE] = "no-overwrite",821 [PARSE_EVENTS__TERM_TYPE_DRV_CFG] = "driver-config",822 [PARSE_EVENTS__TERM_TYPE_PERCORE] = "percore",823 [PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT] = "aux-output",824 [PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE] = "aux-sample-size",825 [PARSE_EVENTS__TERM_TYPE_METRIC_ID] = "metric-id",826 [PARSE_EVENTS__TERM_TYPE_RAW] = "raw",827 [PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE] = "legacy-cache",828 [PARSE_EVENTS__TERM_TYPE_HARDWARE] = "hardware",829 };830 if ((unsigned int)term_type >= __PARSE_EVENTS__TERM_TYPE_NR)831 return "unknown term";832 833 return config_term_names[term_type];834}835 836static bool837config_term_avail(enum parse_events__term_type term_type, struct parse_events_error *err)838{839 char *err_str;840 841 if (term_type < 0 || term_type >= __PARSE_EVENTS__TERM_TYPE_NR) {842 parse_events_error__handle(err, -1,843 strdup("Invalid term_type"), NULL);844 return false;845 }846 if (!config_term_shrinked)847 return true;848 849 switch (term_type) {850 case PARSE_EVENTS__TERM_TYPE_CONFIG:851 case PARSE_EVENTS__TERM_TYPE_CONFIG1:852 case PARSE_EVENTS__TERM_TYPE_CONFIG2:853 case PARSE_EVENTS__TERM_TYPE_CONFIG3:854 case PARSE_EVENTS__TERM_TYPE_NAME:855 case PARSE_EVENTS__TERM_TYPE_METRIC_ID:856 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:857 case PARSE_EVENTS__TERM_TYPE_PERCORE:858 return true;859 case PARSE_EVENTS__TERM_TYPE_USER:860 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:861 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:862 case PARSE_EVENTS__TERM_TYPE_TIME:863 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:864 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:865 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:866 case PARSE_EVENTS__TERM_TYPE_INHERIT:867 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:868 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:869 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:870 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:871 case PARSE_EVENTS__TERM_TYPE_DRV_CFG:872 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:873 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:874 case PARSE_EVENTS__TERM_TYPE_RAW:875 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE:876 case PARSE_EVENTS__TERM_TYPE_HARDWARE:877 default:878 if (!err)879 return false;880 881 /* term_type is validated so indexing is safe */882 if (asprintf(&err_str, "'%s' is not usable in 'perf stat'",883 config_term_name(term_type)) >= 0)884 parse_events_error__handle(err, -1, err_str, NULL);885 return false;886 }887}888 889void parse_events__shrink_config_terms(void)890{891 config_term_shrinked = true;892}893 894static int config_term_common(struct perf_event_attr *attr,895 struct parse_events_term *term,896 struct parse_events_error *err)897{898#define CHECK_TYPE_VAL(type) \899do { \900 if (check_type_val(term, err, PARSE_EVENTS__TERM_TYPE_ ## type)) \901 return -EINVAL; \902} while (0)903 904 switch (term->type_term) {905 case PARSE_EVENTS__TERM_TYPE_CONFIG:906 CHECK_TYPE_VAL(NUM);907 attr->config = term->val.num;908 break;909 case PARSE_EVENTS__TERM_TYPE_CONFIG1:910 CHECK_TYPE_VAL(NUM);911 attr->config1 = term->val.num;912 break;913 case PARSE_EVENTS__TERM_TYPE_CONFIG2:914 CHECK_TYPE_VAL(NUM);915 attr->config2 = term->val.num;916 break;917 case PARSE_EVENTS__TERM_TYPE_CONFIG3:918 CHECK_TYPE_VAL(NUM);919 attr->config3 = term->val.num;920 break;921 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:922 CHECK_TYPE_VAL(NUM);923 break;924 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:925 CHECK_TYPE_VAL(NUM);926 break;927 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:928 CHECK_TYPE_VAL(STR);929 if (strcmp(term->val.str, "no") &&930 parse_branch_str(term->val.str,931 &attr->branch_sample_type)) {932 parse_events_error__handle(err, term->err_val,933 strdup("invalid branch sample type"),934 NULL);935 return -EINVAL;936 }937 break;938 case PARSE_EVENTS__TERM_TYPE_TIME:939 CHECK_TYPE_VAL(NUM);940 if (term->val.num > 1) {941 parse_events_error__handle(err, term->err_val,942 strdup("expected 0 or 1"),943 NULL);944 return -EINVAL;945 }946 break;947 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:948 CHECK_TYPE_VAL(STR);949 break;950 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:951 CHECK_TYPE_VAL(NUM);952 break;953 case PARSE_EVENTS__TERM_TYPE_INHERIT:954 CHECK_TYPE_VAL(NUM);955 break;956 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:957 CHECK_TYPE_VAL(NUM);958 break;959 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:960 CHECK_TYPE_VAL(NUM);961 break;962 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:963 CHECK_TYPE_VAL(NUM);964 break;965 case PARSE_EVENTS__TERM_TYPE_NAME:966 CHECK_TYPE_VAL(STR);967 break;968 case PARSE_EVENTS__TERM_TYPE_METRIC_ID:969 CHECK_TYPE_VAL(STR);970 break;971 case PARSE_EVENTS__TERM_TYPE_RAW:972 CHECK_TYPE_VAL(STR);973 break;974 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:975 CHECK_TYPE_VAL(NUM);976 break;977 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:978 CHECK_TYPE_VAL(NUM);979 break;980 case PARSE_EVENTS__TERM_TYPE_PERCORE:981 CHECK_TYPE_VAL(NUM);982 if ((unsigned int)term->val.num > 1) {983 parse_events_error__handle(err, term->err_val,984 strdup("expected 0 or 1"),985 NULL);986 return -EINVAL;987 }988 break;989 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:990 CHECK_TYPE_VAL(NUM);991 break;992 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:993 CHECK_TYPE_VAL(NUM);994 if (term->val.num > UINT_MAX) {995 parse_events_error__handle(err, term->err_val,996 strdup("too big"),997 NULL);998 return -EINVAL;999 }1000 break;1001 case PARSE_EVENTS__TERM_TYPE_DRV_CFG:1002 case PARSE_EVENTS__TERM_TYPE_USER:1003 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE:1004 case PARSE_EVENTS__TERM_TYPE_HARDWARE:1005 default:1006 parse_events_error__handle(err, term->err_term,1007 strdup(config_term_name(term->type_term)),1008 parse_events_formats_error_string(NULL));1009 return -EINVAL;1010 }1011 1012 /*1013 * Check term availability after basic checking so1014 * PARSE_EVENTS__TERM_TYPE_USER can be found and filtered.1015 *1016 * If check availability at the entry of this function,1017 * user will see "'<sysfs term>' is not usable in 'perf stat'"1018 * if an invalid config term is provided for legacy events1019 * (for example, instructions/badterm/...), which is confusing.1020 */1021 if (!config_term_avail(term->type_term, err))1022 return -EINVAL;1023 return 0;1024#undef CHECK_TYPE_VAL1025}1026 1027static int config_term_pmu(struct perf_event_attr *attr,1028 struct parse_events_term *term,1029 struct parse_events_error *err)1030{1031 if (term->type_term == PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE) {1032 struct perf_pmu *pmu = perf_pmus__find_by_type(attr->type);1033 1034 if (!pmu) {1035 char *err_str;1036 1037 if (asprintf(&err_str, "Failed to find PMU for type %d", attr->type) >= 0)1038 parse_events_error__handle(err, term->err_term,1039 err_str, /*help=*/NULL);1040 return -EINVAL;1041 }1042 /*1043 * Rewrite the PMU event to a legacy cache one unless the PMU1044 * doesn't support legacy cache events or the event is present1045 * within the PMU.1046 */1047 if (perf_pmu__supports_legacy_cache(pmu) &&1048 !perf_pmu__have_event(pmu, term->config)) {1049 attr->type = PERF_TYPE_HW_CACHE;1050 return parse_events__decode_legacy_cache(term->config, pmu->type,1051 &attr->config);1052 } else {1053 term->type_term = PARSE_EVENTS__TERM_TYPE_USER;1054 term->no_value = true;1055 }1056 }1057 if (term->type_term == PARSE_EVENTS__TERM_TYPE_HARDWARE) {1058 struct perf_pmu *pmu = perf_pmus__find_by_type(attr->type);1059 1060 if (!pmu) {1061 char *err_str;1062 1063 if (asprintf(&err_str, "Failed to find PMU for type %d", attr->type) >= 0)1064 parse_events_error__handle(err, term->err_term,1065 err_str, /*help=*/NULL);1066 return -EINVAL;1067 }1068 /*1069 * If the PMU has a sysfs or json event prefer it over1070 * legacy. ARM requires this.1071 */1072 if (perf_pmu__have_event(pmu, term->config)) {1073 term->type_term = PARSE_EVENTS__TERM_TYPE_USER;1074 term->no_value = true;1075 } else {1076 attr->type = PERF_TYPE_HARDWARE;1077 attr->config = term->val.num;1078 if (perf_pmus__supports_extended_type())1079 attr->config |= (__u64)pmu->type << PERF_PMU_TYPE_SHIFT;1080 }1081 return 0;1082 }1083 if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER ||1084 term->type_term == PARSE_EVENTS__TERM_TYPE_DRV_CFG) {1085 /*1086 * Always succeed for sysfs terms, as we dont know1087 * at this point what type they need to have.1088 */1089 return 0;1090 }1091 return config_term_common(attr, term, err);1092}1093 1094#ifdef HAVE_LIBTRACEEVENT1095static int config_term_tracepoint(struct perf_event_attr *attr,1096 struct parse_events_term *term,1097 struct parse_events_error *err)1098{1099 switch (term->type_term) {1100 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:1101 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:1102 case PARSE_EVENTS__TERM_TYPE_INHERIT:1103 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:1104 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:1105 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:1106 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:1107 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:1108 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:1109 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:1110 return config_term_common(attr, term, err);1111 case PARSE_EVENTS__TERM_TYPE_USER:1112 case PARSE_EVENTS__TERM_TYPE_CONFIG:1113 case PARSE_EVENTS__TERM_TYPE_CONFIG1:1114 case PARSE_EVENTS__TERM_TYPE_CONFIG2:1115 case PARSE_EVENTS__TERM_TYPE_CONFIG3:1116 case PARSE_EVENTS__TERM_TYPE_NAME:1117 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:1118 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:1119 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:1120 case PARSE_EVENTS__TERM_TYPE_TIME:1121 case PARSE_EVENTS__TERM_TYPE_DRV_CFG:1122 case PARSE_EVENTS__TERM_TYPE_PERCORE:1123 case PARSE_EVENTS__TERM_TYPE_METRIC_ID:1124 case PARSE_EVENTS__TERM_TYPE_RAW:1125 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE:1126 case PARSE_EVENTS__TERM_TYPE_HARDWARE:1127 default:1128 if (err) {1129 parse_events_error__handle(err, term->err_term,1130 strdup(config_term_name(term->type_term)),1131 strdup("valid terms: call-graph,stack-size\n"));1132 }1133 return -EINVAL;1134 }1135 1136 return 0;1137}1138#endif1139 1140static int config_attr(struct perf_event_attr *attr,1141 const struct parse_events_terms *head,1142 struct parse_events_error *err,1143 config_term_func_t config_term)1144{1145 struct parse_events_term *term;1146 1147 list_for_each_entry(term, &head->terms, list)1148 if (config_term(attr, term, err))1149 return -EINVAL;1150 1151 return 0;1152}1153 1154static int get_config_terms(const struct parse_events_terms *head_config,1155 struct list_head *head_terms)1156{1157#define ADD_CONFIG_TERM(__type, __weak) \1158 struct evsel_config_term *__t; \1159 \1160 __t = zalloc(sizeof(*__t)); \1161 if (!__t) \1162 return -ENOMEM; \1163 \1164 INIT_LIST_HEAD(&__t->list); \1165 __t->type = EVSEL__CONFIG_TERM_ ## __type; \1166 __t->weak = __weak; \1167 list_add_tail(&__t->list, head_terms)1168 1169#define ADD_CONFIG_TERM_VAL(__type, __name, __val, __weak) \1170do { \1171 ADD_CONFIG_TERM(__type, __weak); \1172 __t->val.__name = __val; \1173} while (0)1174 1175#define ADD_CONFIG_TERM_STR(__type, __val, __weak) \1176do { \1177 ADD_CONFIG_TERM(__type, __weak); \1178 __t->val.str = strdup(__val); \1179 if (!__t->val.str) { \1180 zfree(&__t); \1181 return -ENOMEM; \1182 } \1183 __t->free_str = true; \1184} while (0)1185 1186 struct parse_events_term *term;1187 1188 list_for_each_entry(term, &head_config->terms, list) {1189 switch (term->type_term) {1190 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:1191 ADD_CONFIG_TERM_VAL(PERIOD, period, term->val.num, term->weak);1192 break;1193 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:1194 ADD_CONFIG_TERM_VAL(FREQ, freq, term->val.num, term->weak);1195 break;1196 case PARSE_EVENTS__TERM_TYPE_TIME:1197 ADD_CONFIG_TERM_VAL(TIME, time, term->val.num, term->weak);1198 break;1199 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:1200 ADD_CONFIG_TERM_STR(CALLGRAPH, term->val.str, term->weak);1201 break;1202 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:1203 ADD_CONFIG_TERM_STR(BRANCH, term->val.str, term->weak);1204 break;1205 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:1206 ADD_CONFIG_TERM_VAL(STACK_USER, stack_user,1207 term->val.num, term->weak);1208 break;1209 case PARSE_EVENTS__TERM_TYPE_INHERIT:1210 ADD_CONFIG_TERM_VAL(INHERIT, inherit,1211 term->val.num ? 1 : 0, term->weak);1212 break;1213 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:1214 ADD_CONFIG_TERM_VAL(INHERIT, inherit,1215 term->val.num ? 0 : 1, term->weak);1216 break;1217 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:1218 ADD_CONFIG_TERM_VAL(MAX_STACK, max_stack,1219 term->val.num, term->weak);1220 break;1221 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:1222 ADD_CONFIG_TERM_VAL(MAX_EVENTS, max_events,1223 term->val.num, term->weak);1224 break;1225 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:1226 ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite,1227 term->val.num ? 1 : 0, term->weak);1228 break;1229 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:1230 ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite,1231 term->val.num ? 0 : 1, term->weak);1232 break;1233 case PARSE_EVENTS__TERM_TYPE_DRV_CFG:1234 ADD_CONFIG_TERM_STR(DRV_CFG, term->val.str, term->weak);1235 break;1236 case PARSE_EVENTS__TERM_TYPE_PERCORE:1237 ADD_CONFIG_TERM_VAL(PERCORE, percore,1238 term->val.num ? true : false, term->weak);1239 break;1240 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:1241 ADD_CONFIG_TERM_VAL(AUX_OUTPUT, aux_output,1242 term->val.num ? 1 : 0, term->weak);1243 break;1244 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:1245 ADD_CONFIG_TERM_VAL(AUX_SAMPLE_SIZE, aux_sample_size,1246 term->val.num, term->weak);1247 break;1248 case PARSE_EVENTS__TERM_TYPE_USER:1249 case PARSE_EVENTS__TERM_TYPE_CONFIG:1250 case PARSE_EVENTS__TERM_TYPE_CONFIG1:1251 case PARSE_EVENTS__TERM_TYPE_CONFIG2:1252 case PARSE_EVENTS__TERM_TYPE_CONFIG3:1253 case PARSE_EVENTS__TERM_TYPE_NAME:1254 case PARSE_EVENTS__TERM_TYPE_METRIC_ID:1255 case PARSE_EVENTS__TERM_TYPE_RAW:1256 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE:1257 case PARSE_EVENTS__TERM_TYPE_HARDWARE:1258 default:1259 break;1260 }1261 }1262 return 0;1263}1264 1265/*1266 * Add EVSEL__CONFIG_TERM_CFG_CHG where cfg_chg will have a bit set for1267 * each bit of attr->config that the user has changed.1268 */1269static int get_config_chgs(struct perf_pmu *pmu, struct parse_events_terms *head_config,1270 struct list_head *head_terms)1271{1272 struct parse_events_term *term;1273 u64 bits = 0;1274 int type;1275 1276 list_for_each_entry(term, &head_config->terms, list) {1277 switch (term->type_term) {1278 case PARSE_EVENTS__TERM_TYPE_USER:1279 type = perf_pmu__format_type(pmu, term->config);1280 if (type != PERF_PMU_FORMAT_VALUE_CONFIG)1281 continue;1282 bits |= perf_pmu__format_bits(pmu, term->config);1283 break;1284 case PARSE_EVENTS__TERM_TYPE_CONFIG:1285 bits = ~(u64)0;1286 break;1287 case PARSE_EVENTS__TERM_TYPE_CONFIG1:1288 case PARSE_EVENTS__TERM_TYPE_CONFIG2:1289 case PARSE_EVENTS__TERM_TYPE_CONFIG3:1290 case PARSE_EVENTS__TERM_TYPE_NAME:1291 case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:1292 case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ:1293 case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:1294 case PARSE_EVENTS__TERM_TYPE_TIME:1295 case PARSE_EVENTS__TERM_TYPE_CALLGRAPH:1296 case PARSE_EVENTS__TERM_TYPE_STACKSIZE:1297 case PARSE_EVENTS__TERM_TYPE_NOINHERIT:1298 case PARSE_EVENTS__TERM_TYPE_INHERIT:1299 case PARSE_EVENTS__TERM_TYPE_MAX_STACK:1300 case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:1301 case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:1302 case PARSE_EVENTS__TERM_TYPE_OVERWRITE:1303 case PARSE_EVENTS__TERM_TYPE_DRV_CFG:1304 case PARSE_EVENTS__TERM_TYPE_PERCORE:1305 case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT:1306 case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE:1307 case PARSE_EVENTS__TERM_TYPE_METRIC_ID:1308 case PARSE_EVENTS__TERM_TYPE_RAW:1309 case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE:1310 case PARSE_EVENTS__TERM_TYPE_HARDWARE:1311 default:1312 break;1313 }1314 }1315 1316 if (bits)1317 ADD_CONFIG_TERM_VAL(CFG_CHG, cfg_chg, bits, false);1318 1319#undef ADD_CONFIG_TERM1320 return 0;1321}1322 1323int parse_events_add_tracepoint(struct parse_events_state *parse_state,1324 struct list_head *list,1325 const char *sys, const char *event,1326 struct parse_events_error *err,1327 struct parse_events_terms *head_config, void *loc_)1328{1329 YYLTYPE *loc = loc_;1330#ifdef HAVE_LIBTRACEEVENT1331 if (head_config) {1332 struct perf_event_attr attr;1333 1334 if (config_attr(&attr, head_config, err,1335 config_term_tracepoint))1336 return -EINVAL;1337 }1338 1339 if (strpbrk(sys, "*?"))1340 return add_tracepoint_multi_sys(parse_state, list, sys, event,1341 err, head_config, loc);1342 else1343 return add_tracepoint_event(parse_state, list, sys, event,1344 err, head_config, loc);1345#else1346 (void)parse_state;1347 (void)list;1348 (void)sys;1349 (void)event;1350 (void)head_config;1351 parse_events_error__handle(err, loc->first_column, strdup("unsupported tracepoint"),1352 strdup("libtraceevent is necessary for tracepoint support"));1353 return -1;1354#endif1355}1356 1357static int __parse_events_add_numeric(struct parse_events_state *parse_state,1358 struct list_head *list,1359 struct perf_pmu *pmu, u32 type, u32 extended_type,1360 u64 config, const struct parse_events_terms *head_config)1361{1362 struct perf_event_attr attr;1363 LIST_HEAD(config_terms);1364 const char *name, *metric_id;1365 int ret;1366 1367 memset(&attr, 0, sizeof(attr));1368 attr.type = type;1369 attr.config = config;1370 if (extended_type && (type == PERF_TYPE_HARDWARE || type == PERF_TYPE_HW_CACHE)) {1371 assert(perf_pmus__supports_extended_type());1372 attr.config |= (u64)extended_type << PERF_PMU_TYPE_SHIFT;1373 }1374 1375 if (head_config) {1376 if (config_attr(&attr, head_config, parse_state->error,1377 config_term_common))1378 return -EINVAL;1379 1380 if (get_config_terms(head_config, &config_terms))1381 return -ENOMEM;1382 }1383 1384 name = get_config_name(head_config);1385 metric_id = get_config_metric_id(head_config);1386 ret = __add_event(list, &parse_state->idx, &attr, /*init_attr*/true, name,1387 metric_id, pmu, &config_terms, /*auto_merge_stats=*/false,1388 /*cpu_list=*/NULL) ? 0 : -ENOMEM;1389 free_config_terms(&config_terms);1390 return ret;1391}1392 1393int parse_events_add_numeric(struct parse_events_state *parse_state,1394 struct list_head *list,1395 u32 type, u64 config,1396 const struct parse_events_terms *head_config,1397 bool wildcard)1398{1399 struct perf_pmu *pmu = NULL;1400 bool found_supported = false;1401 1402 /* Wildcards on numeric values are only supported by core PMUs. */1403 if (wildcard && perf_pmus__supports_extended_type()) {1404 while ((pmu = perf_pmus__scan_core(pmu)) != NULL) {1405 int ret;1406 1407 found_supported = true;1408 if (parse_events__filter_pmu(parse_state, pmu))1409 continue;1410 1411 ret = __parse_events_add_numeric(parse_state, list, pmu,1412 type, pmu->type,1413 config, head_config);1414 if (ret)1415 return ret;1416 }1417 if (found_supported)1418 return 0;1419 }1420 return __parse_events_add_numeric(parse_state, list, perf_pmus__find_by_type(type),1421 type, /*extended_type=*/0, config, head_config);1422}1423 1424int parse_events_add_tool(struct parse_events_state *parse_state,1425 struct list_head *list,1426 int tool_event)1427{1428 return add_event_tool(list, &parse_state->idx, tool_event);1429}1430 1431static bool config_term_percore(struct list_head *config_terms)1432{1433 struct evsel_config_term *term;1434 1435 list_for_each_entry(term, config_terms, list) {1436 if (term->type == EVSEL__CONFIG_TERM_PERCORE)1437 return term->val.percore;1438 }1439 1440 return false;1441}1442 1443static int parse_events_add_pmu(struct parse_events_state *parse_state,1444 struct list_head *list, struct perf_pmu *pmu,1445 const struct parse_events_terms *const_parsed_terms,1446 bool auto_merge_stats)1447{1448 struct perf_event_attr attr;1449 struct perf_pmu_info info;1450 struct evsel *evsel;1451 struct parse_events_error *err = parse_state->error;1452 LIST_HEAD(config_terms);1453 struct parse_events_terms parsed_terms;1454 bool alias_rewrote_terms = false;1455 1456 if (verbose > 1) {1457 struct strbuf sb;1458 1459 strbuf_init(&sb, /*hint=*/ 0);1460 if (pmu->selectable && const_parsed_terms &&1461 list_empty(&const_parsed_terms->terms)) {1462 strbuf_addf(&sb, "%s//", pmu->name);1463 } else {1464 strbuf_addf(&sb, "%s/", pmu->name);1465 parse_events_terms__to_strbuf(const_parsed_terms, &sb);1466 strbuf_addch(&sb, '/');1467 }1468 fprintf(stderr, "Attempt to add: %s\n", sb.buf);1469 strbuf_release(&sb);1470 }1471 1472 memset(&attr, 0, sizeof(attr));1473 if (pmu->perf_event_attr_init_default)1474 pmu->perf_event_attr_init_default(pmu, &attr);1475 1476 attr.type = pmu->type;1477 1478 if (!const_parsed_terms || list_empty(&const_parsed_terms->terms)) {1479 evsel = __add_event(list, &parse_state->idx, &attr,1480 /*init_attr=*/true, /*name=*/NULL,1481 /*metric_id=*/NULL, pmu,1482 /*config_terms=*/NULL, auto_merge_stats,1483 /*cpu_list=*/NULL);1484 return evsel ? 0 : -ENOMEM;1485 }1486 1487 parse_events_terms__init(&parsed_terms);1488 if (const_parsed_terms) {1489 int ret = parse_events_terms__copy(const_parsed_terms, &parsed_terms);1490 1491 if (ret)1492 return ret;1493 }1494 fix_raw(&parsed_terms, pmu);1495 1496 /* Configure attr/terms with a known PMU, this will set hardcoded terms. */1497 if (config_attr(&attr, &parsed_terms, parse_state->error, config_term_pmu)) {1498 parse_events_terms__exit(&parsed_terms);1499 return -EINVAL;1500 }1501 1502 /* Look for event names in the terms and rewrite into format based terms. */1503 if (perf_pmu__check_alias(pmu, &parsed_terms,1504 &info, &alias_rewrote_terms, err)) {1505 parse_events_terms__exit(&parsed_terms);1506 return -EINVAL;1507 }1508 1509 if (verbose > 1) {1510 struct strbuf sb;1511 1512 strbuf_init(&sb, /*hint=*/ 0);1513 parse_events_terms__to_strbuf(&parsed_terms, &sb);1514 fprintf(stderr, "..after resolving event: %s/%s/\n", pmu->name, sb.buf);1515 strbuf_release(&sb);1516 }1517 1518 /* Configure attr/terms again if an alias was expanded. */1519 if (alias_rewrote_terms &&1520 config_attr(&attr, &parsed_terms, parse_state->error, config_term_pmu)) {1521 parse_events_terms__exit(&parsed_terms);1522 return -EINVAL;1523 }1524 1525 if (get_config_terms(&parsed_terms, &config_terms)) {1526 parse_events_terms__exit(&parsed_terms);1527 return -ENOMEM;1528 }1529 1530 /*1531 * When using default config, record which bits of attr->config were1532 * changed by the user.1533 */1534 if (pmu->perf_event_attr_init_default &&1535 get_config_chgs(pmu, &parsed_terms, &config_terms)) {1536 parse_events_terms__exit(&parsed_terms);1537 return -ENOMEM;1538 }1539 1540 if (perf_pmu__config(pmu, &attr, &parsed_terms, parse_state->error)) {1541 free_config_terms(&config_terms);1542 parse_events_terms__exit(&parsed_terms);1543 return -EINVAL;1544 }1545 1546 evsel = __add_event(list, &parse_state->idx, &attr, /*init_attr=*/true,1547 get_config_name(&parsed_terms),1548 get_config_metric_id(&parsed_terms), pmu,1549 &config_terms, auto_merge_stats, /*cpu_list=*/NULL);1550 if (!evsel) {1551 parse_events_terms__exit(&parsed_terms);1552 return -ENOMEM;1553 }1554 1555 if (evsel->name)1556 evsel->use_config_name = true;1557 1558 evsel->percore = config_term_percore(&evsel->config_terms);1559 1560 parse_events_terms__exit(&parsed_terms);1561 free((char *)evsel->unit);1562 evsel->unit = strdup(info.unit);1563 evsel->scale = info.scale;1564 evsel->per_pkg = info.per_pkg;1565 evsel->snapshot = info.snapshot;1566 return 0;1567}1568 1569int parse_events_multi_pmu_add(struct parse_events_state *parse_state,1570 const char *event_name,1571 const struct parse_events_terms *const_parsed_terms,1572 struct list_head **listp, void *loc_)1573{1574 struct parse_events_term *term;1575 struct list_head *list = NULL;1576 struct perf_pmu *pmu = NULL;1577 YYLTYPE *loc = loc_;1578 int ok = 0;1579 const char *config;1580 struct parse_events_terms parsed_terms;1581 1582 *listp = NULL;1583 1584 parse_events_terms__init(&parsed_terms);1585 if (const_parsed_terms) {1586 int ret = parse_events_terms__copy(const_parsed_terms, &parsed_terms);1587 1588 if (ret)1589 return ret;1590 }1591 1592 config = strdup(event_name);1593 if (!config)1594 goto out_err;1595 1596 if (parse_events_term__num(&term,1597 PARSE_EVENTS__TERM_TYPE_USER,1598 config, /*num=*/1, /*novalue=*/true,1599 loc, /*loc_val=*/NULL) < 0) {1600 zfree(&config);1601 goto out_err;1602 }1603 list_add_tail(&term->list, &parsed_terms.terms);1604 1605 /* Add it for all PMUs that support the alias */1606 list = malloc(sizeof(struct list_head));1607 if (!list)1608 goto out_err;1609 1610 INIT_LIST_HEAD(list);1611 1612 while ((pmu = perf_pmus__scan(pmu)) != NULL) {1613 bool auto_merge_stats;1614 1615 if (parse_events__filter_pmu(parse_state, pmu))1616 continue;1617 1618 if (!perf_pmu__have_event(pmu, event_name))1619 continue;1620 1621 auto_merge_stats = perf_pmu__auto_merge_stats(pmu);1622 if (!parse_events_add_pmu(parse_state, list, pmu,1623 &parsed_terms, auto_merge_stats)) {1624 struct strbuf sb;1625 1626 strbuf_init(&sb, /*hint=*/ 0);1627 parse_events_terms__to_strbuf(&parsed_terms, &sb);1628 pr_debug("%s -> %s/%s/\n", event_name, pmu->name, sb.buf);1629 strbuf_release(&sb);1630 ok++;1631 }1632 }1633 1634 if (parse_state->fake_pmu) {1635 if (!parse_events_add_pmu(parse_state, list, perf_pmus__fake_pmu(), &parsed_terms,1636 /*auto_merge_stats=*/true)) {1637 struct strbuf sb;1638 1639 strbuf_init(&sb, /*hint=*/ 0);1640 parse_events_terms__to_strbuf(&parsed_terms, &sb);1641 pr_debug("%s -> fake/%s/\n", event_name, sb.buf);1642 strbuf_release(&sb);1643 ok++;1644 }1645 }1646 1647out_err:1648 parse_events_terms__exit(&parsed_terms);1649 if (ok)1650 *listp = list;1651 else1652 free(list);1653 1654 return ok ? 0 : -1;1655}1656 1657int parse_events_multi_pmu_add_or_add_pmu(struct parse_events_state *parse_state,1658 const char *event_or_pmu,1659 const struct parse_events_terms *const_parsed_terms,1660 struct list_head **listp,1661 void *loc_)1662{1663 YYLTYPE *loc = loc_;1664 struct perf_pmu *pmu;1665 int ok = 0;1666 char *help;1667 1668 *listp = malloc(sizeof(**listp));1669 if (!*listp)1670 return -ENOMEM;1671 1672 INIT_LIST_HEAD(*listp);1673 1674 /* Attempt to add to list assuming event_or_pmu is a PMU name. */1675 pmu = perf_pmus__find(event_or_pmu);1676 if (pmu && !parse_events_add_pmu(parse_state, *listp, pmu, const_parsed_terms,1677 /*auto_merge_stats=*/false))1678 return 0;1679 1680 if (parse_state->fake_pmu) {1681 if (!parse_events_add_pmu(parse_state, *listp, perf_pmus__fake_pmu(),1682 const_parsed_terms,1683 /*auto_merge_stats=*/false))1684 return 0;1685 }1686 1687 pmu = NULL;1688 /* Failed to add, try wildcard expansion of event_or_pmu as a PMU name. */1689 while ((pmu = perf_pmus__scan(pmu)) != NULL) {1690 if (!parse_events__filter_pmu(parse_state, pmu) &&1691 perf_pmu__match(pmu, event_or_pmu)) {1692 bool auto_merge_stats = perf_pmu__auto_merge_stats(pmu);1693 1694 if (!parse_events_add_pmu(parse_state, *listp, pmu,1695 const_parsed_terms,1696 auto_merge_stats)) {1697 ok++;1698 parse_state->wild_card_pmus = true;1699 }1700 }1701 }1702 if (ok)1703 return 0;1704 1705 /* Failure to add, assume event_or_pmu is an event name. */1706 zfree(listp);1707 if (!parse_events_multi_pmu_add(parse_state, event_or_pmu, const_parsed_terms, listp, loc))1708 return 0;1709 1710 if (asprintf(&help, "Unable to find PMU or event on a PMU of '%s'", event_or_pmu) < 0)1711 help = NULL;1712 parse_events_error__handle(parse_state->error, loc->first_column,1713 strdup("Bad event or PMU"),1714 help);1715 zfree(listp);1716 return -EINVAL;1717}1718 1719void parse_events__set_leader(char *name, struct list_head *list)1720{1721 struct evsel *leader;1722 1723 if (list_empty(list)) {1724 WARN_ONCE(true, "WARNING: failed to set leader: empty list");1725 return;1726 }1727 1728 leader = list_first_entry(list, struct evsel, core.node);1729 __perf_evlist__set_leader(list, &leader->core);1730 zfree(&leader->group_name);1731 leader->group_name = name;1732}1733 1734static int parse_events__modifier_list(struct parse_events_state *parse_state,1735 YYLTYPE *loc,1736 struct list_head *list,1737 struct parse_events_modifier mod,1738 bool group)1739{1740 struct evsel *evsel;1741 1742 if (!group && mod.weak) {1743 parse_events_error__handle(parse_state->error, loc->first_column,1744 strdup("Weak modifier is for use with groups"), NULL);1745 return -EINVAL;1746 }1747 1748 __evlist__for_each_entry(list, evsel) {1749 /* Translate modifiers into the equivalent evsel excludes. */1750 int eu = group ? evsel->core.attr.exclude_user : 0;1751 int ek = group ? evsel->core.attr.exclude_kernel : 0;1752 int eh = group ? evsel->core.attr.exclude_hv : 0;1753 int eH = group ? evsel->core.attr.exclude_host : 0;1754 int eG = group ? evsel->core.attr.exclude_guest : 0;1755 int exclude = eu | ek | eh;1756 int exclude_GH = group ? evsel->exclude_GH : 0;1757 1758 if (mod.precise) {1759 /* use of precise requires exclude_guest */1760 eG = 1;1761 }1762 if (mod.user) {1763 if (!exclude)1764 exclude = eu = ek = eh = 1;1765 if (!exclude_GH && !perf_guest)1766 eG = 1;1767 eu = 0;1768 }1769 if (mod.kernel) {1770 if (!exclude)1771 exclude = eu = ek = eh = 1;1772 ek = 0;1773 }1774 if (mod.hypervisor) {1775 if (!exclude)1776 exclude = eu = ek = eh = 1;1777 eh = 0;1778 }1779 if (mod.guest) {1780 if (!exclude_GH)1781 exclude_GH = eG = eH = 1;1782 eG = 0;1783 }1784 if (mod.host) {1785 if (!exclude_GH)1786 exclude_GH = eG = eH = 1;1787 eH = 0;1788 }1789 evsel->core.attr.exclude_user = eu;1790 evsel->core.attr.exclude_kernel = ek;1791 evsel->core.attr.exclude_hv = eh;1792 evsel->core.attr.exclude_host = eH;1793 evsel->core.attr.exclude_guest = eG;1794 evsel->exclude_GH = exclude_GH;1795 1796 /* Simple modifiers copied to the evsel. */1797 if (mod.precise) {1798 u8 precise = evsel->core.attr.precise_ip + mod.precise;1799 /*1800 * precise ip:1801 *1802 * 0 - SAMPLE_IP can have arbitrary skid1803 * 1 - SAMPLE_IP must have constant skid1804 * 2 - SAMPLE_IP requested to have 0 skid1805 * 3 - SAMPLE_IP must have 0 skid1806 *1807 * See also PERF_RECORD_MISC_EXACT_IP1808 */1809 if (precise > 3) {1810 char *help;1811 1812 if (asprintf(&help,1813 "Maximum combined precise value is 3, adding precision to \"%s\"",1814 evsel__name(evsel)) > 0) {1815 parse_events_error__handle(parse_state->error,1816 loc->first_column,1817 help, NULL);1818 }1819 return -EINVAL;1820 }1821 evsel->core.attr.precise_ip = precise;1822 }1823 if (mod.precise_max)1824 evsel->precise_max = 1;1825 if (mod.non_idle)1826 evsel->core.attr.exclude_idle = 1;1827 if (mod.sample_read)1828 evsel->sample_read = 1;1829 if (mod.pinned && evsel__is_group_leader(evsel))1830 evsel->core.attr.pinned = 1;1831 if (mod.exclusive && evsel__is_group_leader(evsel))1832 evsel->core.attr.exclusive = 1;1833 if (mod.weak)1834 evsel->weak_group = true;1835 if (mod.bpf)1836 evsel->bpf_counter = true;1837 if (mod.retire_lat)1838 evsel->retire_lat = true;1839 }1840 return 0;1841}1842 1843int parse_events__modifier_group(struct parse_events_state *parse_state, void *loc,1844 struct list_head *list,1845 struct parse_events_modifier mod)1846{1847 return parse_events__modifier_list(parse_state, loc, list, mod, /*group=*/true);1848}1849 1850int parse_events__modifier_event(struct parse_events_state *parse_state, void *loc,1851 struct list_head *list,1852 struct parse_events_modifier mod)1853{1854 return parse_events__modifier_list(parse_state, loc, list, mod, /*group=*/false);1855}1856 1857int parse_events__set_default_name(struct list_head *list, char *name)1858{1859 struct evsel *evsel;1860 bool used_name = false;1861 1862 __evlist__for_each_entry(list, evsel) {1863 if (!evsel->name) {1864 evsel->name = used_name ? strdup(name) : name;1865 used_name = true;1866 if (!evsel->name)1867 return -ENOMEM;1868 }1869 }1870 if (!used_name)1871 free(name);1872 return 0;1873}1874 1875static int parse_events__scanner(const char *str,1876 FILE *input,1877 struct parse_events_state *parse_state)1878{1879 YY_BUFFER_STATE buffer;1880 void *scanner;1881 int ret;1882 1883 ret = parse_events_lex_init_extra(parse_state, &scanner);1884 if (ret)1885 return ret;1886 1887 if (str)1888 buffer = parse_events__scan_string(str, scanner);1889 else1890 parse_events_set_in(input, scanner);1891 1892#ifdef PARSER_DEBUG1893 parse_events_debug = 1;1894 parse_events_set_debug(1, scanner);1895#endif1896 ret = parse_events_parse(parse_state, scanner);1897 1898 if (str) {1899 parse_events__flush_buffer(buffer, scanner);1900 parse_events__delete_buffer(buffer, scanner);1901 }1902 parse_events_lex_destroy(scanner);1903 return ret;1904}1905 1906/*1907 * parse event config string, return a list of event terms.1908 */1909int parse_events_terms(struct parse_events_terms *terms, const char *str, FILE *input)1910{1911 struct parse_events_state parse_state = {1912 .terms = NULL,1913 .stoken = PE_START_TERMS,1914 };1915 int ret;1916 1917 ret = parse_events__scanner(str, input, &parse_state);1918 if (!ret)1919 list_splice(&parse_state.terms->terms, &terms->terms);1920 1921 zfree(&parse_state.terms);1922 return ret;1923}1924 1925static int evsel__compute_group_pmu_name(struct evsel *evsel,1926 const struct list_head *head)1927{1928 struct evsel *leader = evsel__leader(evsel);1929 struct evsel *pos;1930 const char *group_pmu_name;1931 struct perf_pmu *pmu = evsel__find_pmu(evsel);1932 1933 if (!pmu) {1934 /*1935 * For PERF_TYPE_HARDWARE and PERF_TYPE_HW_CACHE types the PMU1936 * is a core PMU, but in heterogeneous systems this is1937 * unknown. For now pick the first core PMU.1938 */1939 pmu = perf_pmus__scan_core(NULL);1940 }1941 if (!pmu) {1942 pr_debug("No PMU found for '%s'\n", evsel__name(evsel));1943 return -EINVAL;1944 }1945 group_pmu_name = pmu->name;1946 /*1947 * Software events may be in a group with other uncore PMU events. Use1948 * the pmu_name of the first non-software event to avoid breaking the1949 * software event out of the group.1950 *1951 * Aux event leaders, like intel_pt, expect a group with events from1952 * other PMUs, so substitute the AUX event's PMU in this case.1953 */1954 if (perf_pmu__is_software(pmu) || evsel__is_aux_event(leader)) {1955 struct perf_pmu *leader_pmu = evsel__find_pmu(leader);1956 1957 if (!leader_pmu) {1958 /* As with determining pmu above. */1959 leader_pmu = perf_pmus__scan_core(NULL);1960 }1961 /*1962 * Starting with the leader, find the first event with a named1963 * non-software PMU. for_each_group_(member|evsel) isn't used as1964 * the list isn't yet sorted putting evsel's in the same group1965 * together.1966 */1967 if (leader_pmu && !perf_pmu__is_software(leader_pmu)) {1968 group_pmu_name = leader_pmu->name;1969 } else if (leader->core.nr_members > 1) {1970 list_for_each_entry(pos, head, core.node) {1971 struct perf_pmu *pos_pmu;1972 1973 if (pos == leader || evsel__leader(pos) != leader)1974 continue;1975 pos_pmu = evsel__find_pmu(pos);1976 if (!pos_pmu) {1977 /* As with determining pmu above. */1978 pos_pmu = perf_pmus__scan_core(NULL);1979 }1980 if (pos_pmu && !perf_pmu__is_software(pos_pmu)) {1981 group_pmu_name = pos_pmu->name;1982 break;1983 }1984 }1985 }1986 }1987 /* Record computed name. */1988 evsel->group_pmu_name = strdup(group_pmu_name);1989 return evsel->group_pmu_name ? 0 : -ENOMEM;1990}1991 1992__weak int arch_evlist__cmp(const struct evsel *lhs, const struct evsel *rhs)1993{1994 /* Order by insertion index. */1995 return lhs->core.idx - rhs->core.idx;1996}1997 1998static int evlist__cmp(void *_fg_idx, const struct list_head *l, const struct list_head *r)1999{2000 const struct perf_evsel *lhs_core = container_of(l, struct perf_evsel, node);2001 const struct evsel *lhs = container_of(lhs_core, struct evsel, core);2002 const struct perf_evsel *rhs_core = container_of(r, struct perf_evsel, node);2003 const struct evsel *rhs = container_of(rhs_core, struct evsel, core);2004 int *force_grouped_idx = _fg_idx;2005 int lhs_sort_idx, rhs_sort_idx, ret;2006 const char *lhs_pmu_name, *rhs_pmu_name;2007 bool lhs_has_group, rhs_has_group;2008 2009 /*2010 * First sort by grouping/leader. Read the leader idx only if the evsel2011 * is part of a group, by default ungrouped events will be sorted2012 * relative to grouped events based on where the first ungrouped event2013 * occurs. If both events don't have a group we want to fall-through to2014 * the arch specific sorting, that can reorder and fix things like2015 * Intel's topdown events.2016 */2017 if (lhs_core->leader != lhs_core || lhs_core->nr_members > 1) {2018 lhs_has_group = true;2019 lhs_sort_idx = lhs_core->leader->idx;2020 } else {2021 lhs_has_group = false;2022 lhs_sort_idx = *force_grouped_idx != -1 && arch_evsel__must_be_in_group(lhs)2023 ? *force_grouped_idx2024 : lhs_core->idx;2025 }2026 if (rhs_core->leader != rhs_core || rhs_core->nr_members > 1) {2027 rhs_has_group = true;2028 rhs_sort_idx = rhs_core->leader->idx;2029 } else {2030 rhs_has_group = false;2031 rhs_sort_idx = *force_grouped_idx != -1 && arch_evsel__must_be_in_group(rhs)2032 ? *force_grouped_idx2033 : rhs_core->idx;2034 }2035 2036 if (lhs_sort_idx != rhs_sort_idx)2037 return lhs_sort_idx - rhs_sort_idx;2038 2039 /* Group by PMU if there is a group. Groups can't span PMUs. */2040 if (lhs_has_group && rhs_has_group) {2041 lhs_pmu_name = lhs->group_pmu_name;2042 rhs_pmu_name = rhs->group_pmu_name;2043 ret = strcmp(lhs_pmu_name, rhs_pmu_name);2044 if (ret)2045 return ret;2046 }2047 2048 /* Architecture specific sorting. */2049 return arch_evlist__cmp(lhs, rhs);2050}2051 2052static int parse_events__sort_events_and_fix_groups(struct list_head *list)2053{2054 int idx = 0, force_grouped_idx = -1;2055 struct evsel *pos, *cur_leader = NULL;2056 struct perf_evsel *cur_leaders_grp = NULL;2057 bool idx_changed = false, cur_leader_force_grouped = false;2058 int orig_num_leaders = 0, num_leaders = 0;2059 int ret;2060 2061 /*2062 * Compute index to insert ungrouped events at. Place them where the2063 * first ungrouped event appears.2064 */2065 list_for_each_entry(pos, list, core.node) {2066 const struct evsel *pos_leader = evsel__leader(pos);2067 2068 ret = evsel__compute_group_pmu_name(pos, list);2069 if (ret)2070 return ret;2071 2072 if (pos == pos_leader)2073 orig_num_leaders++;2074 2075 /*2076 * Ensure indexes are sequential, in particular for multiple2077 * event lists being merged. The indexes are used to detect when2078 * the user order is modified.2079 */2080 pos->core.idx = idx++;2081 2082 /* Remember an index to sort all forced grouped events together to. */2083 if (force_grouped_idx == -1 && pos == pos_leader && pos->core.nr_members < 2 &&2084 arch_evsel__must_be_in_group(pos))2085 force_grouped_idx = pos->core.idx;2086 }2087 2088 /* Sort events. */2089 list_sort(&force_grouped_idx, list, evlist__cmp);2090 2091 /*2092 * Recompute groups, splitting for PMUs and adding groups for events2093 * that require them.2094 */2095 idx = 0;2096 list_for_each_entry(pos, list, core.node) {2097 const struct evsel *pos_leader = evsel__leader(pos);2098 const char *pos_pmu_name = pos->group_pmu_name;2099 const char *cur_leader_pmu_name;2100 bool pos_force_grouped = force_grouped_idx != -1 &&2101 arch_evsel__must_be_in_group(pos);2102 2103 /* Reset index and nr_members. */2104 if (pos->core.idx != idx)2105 idx_changed = true;2106 pos->core.idx = idx++;2107 pos->core.nr_members = 0;2108 2109 /*2110 * Set the group leader respecting the given groupings and that2111 * groups can't span PMUs.2112 */2113 if (!cur_leader)2114 cur_leader = pos;2115 2116 cur_leader_pmu_name = cur_leader->group_pmu_name;2117 if ((cur_leaders_grp != pos->core.leader &&2118 (!pos_force_grouped || !cur_leader_force_grouped)) ||2119 strcmp(cur_leader_pmu_name, pos_pmu_name)) {2120 /* Event is for a different group/PMU than last. */2121 cur_leader = pos;2122 /*2123 * Remember the leader's group before it is overwritten,2124 * so that later events match as being in the same2125 * group.2126 */2127 cur_leaders_grp = pos->core.leader;2128 /*2129 * Avoid forcing events into groups with events that2130 * don't need to be in the group.2131 */2132 cur_leader_force_grouped = pos_force_grouped;2133 }2134 if (pos_leader != cur_leader) {2135 /* The leader changed so update it. */2136 evsel__set_leader(pos, cur_leader);2137 }2138 }2139 list_for_each_entry(pos, list, core.node) {2140 struct evsel *pos_leader = evsel__leader(pos);2141 2142 if (pos == pos_leader)2143 num_leaders++;2144 pos_leader->core.nr_members++;2145 }2146 return (idx_changed || num_leaders != orig_num_leaders) ? 1 : 0;2147}2148 2149int __parse_events(struct evlist *evlist, const char *str, const char *pmu_filter,2150 struct parse_events_error *err, bool fake_pmu,2151 bool warn_if_reordered, bool fake_tp)2152{2153 struct parse_events_state parse_state = {2154 .list = LIST_HEAD_INIT(parse_state.list),2155 .idx = evlist->core.nr_entries,2156 .error = err,2157 .stoken = PE_START_EVENTS,2158 .fake_pmu = fake_pmu,2159 .fake_tp = fake_tp,2160 .pmu_filter = pmu_filter,2161 .match_legacy_cache_terms = true,2162 };2163 int ret, ret2;2164 2165 ret = parse_events__scanner(str, /*input=*/ NULL, &parse_state);2166 2167 if (!ret && list_empty(&parse_state.list)) {2168 WARN_ONCE(true, "WARNING: event parser found nothing\n");2169 return -1;2170 }2171 2172 ret2 = parse_events__sort_events_and_fix_groups(&parse_state.list);2173 if (ret2 < 0)2174 return ret;2175 2176 if (ret2 && warn_if_reordered && !parse_state.wild_card_pmus)2177 pr_warning("WARNING: events were regrouped to match PMUs\n");2178 2179 /*2180 * Add list to the evlist even with errors to allow callers to clean up.2181 */2182 evlist__splice_list_tail(evlist, &parse_state.list);2183 2184 if (!ret) {2185 struct evsel *last;2186 2187 last = evlist__last(evlist);2188 last->cmdline_group_boundary = true;2189 2190 return 0;2191 }2192 2193 /*2194 * There are 2 users - builtin-record and builtin-test objects.2195 * Both call evlist__delete in case of error, so we dont2196 * need to bother.2197 */2198 return ret;2199}2200 2201int parse_event(struct evlist *evlist, const char *str)2202{2203 struct parse_events_error err;2204 int ret;2205 2206 parse_events_error__init(&err);2207 ret = parse_events(evlist, str, &err);2208 parse_events_error__exit(&err);2209 return ret;2210}2211 2212struct parse_events_error_entry {2213 /** @list: The list the error is part of. */2214 struct list_head list;2215 /** @idx: index in the parsed string */2216 int idx;2217 /** @str: string to display at the index */2218 char *str;2219 /** @help: optional help string */2220 char *help;2221};2222 2223void parse_events_error__init(struct parse_events_error *err)2224{2225 INIT_LIST_HEAD(&err->list);2226}2227 2228void parse_events_error__exit(struct parse_events_error *err)2229{2230 struct parse_events_error_entry *pos, *tmp;2231 2232 list_for_each_entry_safe(pos, tmp, &err->list, list) {2233 zfree(&pos->str);2234 zfree(&pos->help);2235 list_del_init(&pos->list);2236 free(pos);2237 }2238}2239 2240void parse_events_error__handle(struct parse_events_error *err, int idx,2241 char *str, char *help)2242{2243 struct parse_events_error_entry *entry;2244 2245 if (WARN(!str || !err, "WARNING: failed to provide error string or struct\n"))2246 goto out_free;2247 2248 entry = zalloc(sizeof(*entry));2249 if (!entry) {2250 pr_err("Failed to allocate memory for event parsing error: %s (%s)\n",2251 str, help ?: "<no help>");2252 goto out_free;2253 }2254 entry->idx = idx;2255 entry->str = str;2256 entry->help = help;2257 list_add(&entry->list, &err->list);2258 return;2259out_free:2260 free(str);2261 free(help);2262}2263 2264#define MAX_WIDTH 10002265static int get_term_width(void)2266{2267 struct winsize ws;2268 2269 get_term_dimensions(&ws);2270 return ws.ws_col > MAX_WIDTH ? MAX_WIDTH : ws.ws_col;2271}2272 2273static void __parse_events_error__print(int err_idx, const char *err_str,2274 const char *err_help, const char *event)2275{2276 const char *str = "invalid or unsupported event: ";2277 char _buf[MAX_WIDTH];2278 char *buf = (char *) event;2279 int idx = 0;2280 if (err_str) {2281 /* -2 for extra '' in the final fprintf */2282 int width = get_term_width() - 2;2283 int len_event = strlen(event);2284 int len_str, max_len, cut = 0;2285 2286 /*2287 * Maximum error index indent, we will cut2288 * the event string if it's bigger.2289 */2290 int max_err_idx = 13;2291 2292 /*2293 * Let's be specific with the message when2294 * we have the precise error.2295 */2296 str = "event syntax error: ";2297 len_str = strlen(str);2298 max_len = width - len_str;2299 2300 buf = _buf;2301 2302 /* We're cutting from the beginning. */2303 if (err_idx > max_err_idx)2304 cut = err_idx - max_err_idx;2305 2306 strncpy(buf, event + cut, max_len);2307 2308 /* Mark cut parts with '..' on both sides. */2309 if (cut)2310 buf[0] = buf[1] = '.';2311 2312 if ((len_event - cut) > max_len) {2313 buf[max_len - 1] = buf[max_len - 2] = '.';2314 buf[max_len] = 0;2315 }2316 2317 idx = len_str + err_idx - cut;2318 }2319 2320 fprintf(stderr, "%s'%s'\n", str, buf);2321 if (idx) {2322 fprintf(stderr, "%*s\\___ %s\n", idx + 1, "", err_str);2323 if (err_help)2324 fprintf(stderr, "\n%s\n", err_help);2325 }2326}2327 2328void parse_events_error__print(const struct parse_events_error *err,2329 const char *event)2330{2331 struct parse_events_error_entry *pos;2332 bool first = true;2333 2334 list_for_each_entry(pos, &err->list, list) {2335 if (!first)2336 fputs("\n", stderr);2337 __parse_events_error__print(pos->idx, pos->str, pos->help, event);2338 first = false;2339 }2340}2341 2342/*2343 * In the list of errors err, do any of the error strings (str) contain the2344 * given needle string?2345 */2346bool parse_events_error__contains(const struct parse_events_error *err,2347 const char *needle)2348{2349 struct parse_events_error_entry *pos;2350 2351 list_for_each_entry(pos, &err->list, list) {2352 if (strstr(pos->str, needle) != NULL)2353 return true;2354 }2355 return false;2356}2357 2358#undef MAX_WIDTH2359 2360int parse_events_option(const struct option *opt, const char *str,2361 int unset __maybe_unused)2362{2363 struct parse_events_option_args *args = opt->value;2364 struct parse_events_error err;2365 int ret;2366 2367 parse_events_error__init(&err);2368 ret = __parse_events(*args->evlistp, str, args->pmu_filter, &err,2369 /*fake_pmu=*/false, /*warn_if_reordered=*/true,2370 /*fake_tp=*/false);2371 2372 if (ret) {2373 parse_events_error__print(&err, str);2374 fprintf(stderr, "Run 'perf list' for a list of valid events\n");2375 }2376 parse_events_error__exit(&err);2377 2378 return ret;2379}2380 2381int parse_events_option_new_evlist(const struct option *opt, const char *str, int unset)2382{2383 struct parse_events_option_args *args = opt->value;2384 int ret;2385 2386 if (*args->evlistp == NULL) {2387 *args->evlistp = evlist__new();2388 2389 if (*args->evlistp == NULL) {2390 fprintf(stderr, "Not enough memory to create evlist\n");2391 return -1;2392 }2393 }2394 ret = parse_events_option(opt, str, unset);2395 if (ret) {2396 evlist__delete(*args->evlistp);2397 *args->evlistp = NULL;2398 }2399 2400 return ret;2401}2402 2403static int2404foreach_evsel_in_last_glob(struct evlist *evlist,2405 int (*func)(struct evsel *evsel,2406 const void *arg),2407 const void *arg)2408{2409 struct evsel *last = NULL;2410 int err;2411 2412 /*2413 * Don't return when list_empty, give func a chance to report2414 * error when it found last == NULL.2415 *2416 * So no need to WARN here, let *func do this.2417 */2418 if (evlist->core.nr_entries > 0)2419 last = evlist__last(evlist);2420 2421 do {2422 err = (*func)(last, arg);2423 if (err)2424 return -1;2425 if (!last)2426 return 0;2427 2428 if (last->core.node.prev == &evlist->core.entries)2429 return 0;2430 last = list_entry(last->core.node.prev, struct evsel, core.node);2431 } while (!last->cmdline_group_boundary);2432 2433 return 0;2434}2435 2436static int set_filter(struct evsel *evsel, const void *arg)2437{2438 const char *str = arg;2439 bool found = false;2440 int nr_addr_filters = 0;2441 struct perf_pmu *pmu = NULL;2442 2443 if (evsel == NULL) {2444 fprintf(stderr,2445 "--filter option should follow a -e tracepoint or HW tracer option\n");2446 return -1;2447 }2448 2449 if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT) {2450 if (evsel__append_tp_filter(evsel, str) < 0) {2451 fprintf(stderr,2452 "not enough memory to hold filter string\n");2453 return -1;2454 }2455 2456 return 0;2457 }2458 2459 while ((pmu = perf_pmus__scan(pmu)) != NULL)2460 if (pmu->type == evsel->core.attr.type) {2461 found = true;2462 break;2463 }2464 2465 if (found)2466 perf_pmu__scan_file(pmu, "nr_addr_filters",2467 "%d", &nr_addr_filters);2468 2469 if (!nr_addr_filters)2470 return perf_bpf_filter__parse(&evsel->bpf_filters, str);2471 2472 if (evsel__append_addr_filter(evsel, str) < 0) {2473 fprintf(stderr,2474 "not enough memory to hold filter string\n");2475 return -1;2476 }2477 2478 return 0;2479}2480 2481int parse_filter(const struct option *opt, const char *str,2482 int unset __maybe_unused)2483{2484 struct evlist *evlist = *(struct evlist **)opt->value;2485 2486 return foreach_evsel_in_last_glob(evlist, set_filter,2487 (const void *)str);2488}2489 2490static int add_exclude_perf_filter(struct evsel *evsel,2491 const void *arg __maybe_unused)2492{2493 char new_filter[64];2494 2495 if (evsel == NULL || evsel->core.attr.type != PERF_TYPE_TRACEPOINT) {2496 fprintf(stderr,2497 "--exclude-perf option should follow a -e tracepoint option\n");2498 return -1;2499 }2500 2501 snprintf(new_filter, sizeof(new_filter), "common_pid != %d", getpid());2502 2503 if (evsel__append_tp_filter(evsel, new_filter) < 0) {2504 fprintf(stderr,2505 "not enough memory to hold filter string\n");2506 return -1;2507 }2508 2509 return 0;2510}2511 2512int exclude_perf(const struct option *opt,2513 const char *arg __maybe_unused,2514 int unset __maybe_unused)2515{2516 struct evlist *evlist = *(struct evlist **)opt->value;2517 2518 return foreach_evsel_in_last_glob(evlist, add_exclude_perf_filter,2519 NULL);2520}2521 2522int parse_events__is_hardcoded_term(struct parse_events_term *term)2523{2524 return term->type_term != PARSE_EVENTS__TERM_TYPE_USER;2525}2526 2527static int new_term(struct parse_events_term **_term,2528 struct parse_events_term *temp,2529 char *str, u64 num)2530{2531 struct parse_events_term *term;2532 2533 term = malloc(sizeof(*term));2534 if (!term)2535 return -ENOMEM;2536 2537 *term = *temp;2538 INIT_LIST_HEAD(&term->list);2539 term->weak = false;2540 2541 switch (term->type_val) {2542 case PARSE_EVENTS__TERM_TYPE_NUM:2543 term->val.num = num;2544 break;2545 case PARSE_EVENTS__TERM_TYPE_STR:2546 term->val.str = str;2547 break;2548 default:2549 free(term);2550 return -EINVAL;2551 }2552 2553 *_term = term;2554 return 0;2555}2556 2557int parse_events_term__num(struct parse_events_term **term,2558 enum parse_events__term_type type_term,2559 const char *config, u64 num,2560 bool no_value,2561 void *loc_term_, void *loc_val_)2562{2563 YYLTYPE *loc_term = loc_term_;2564 YYLTYPE *loc_val = loc_val_;2565 2566 struct parse_events_term temp = {2567 .type_val = PARSE_EVENTS__TERM_TYPE_NUM,2568 .type_term = type_term,2569 .config = config ? : strdup(config_term_name(type_term)),2570 .no_value = no_value,2571 .err_term = loc_term ? loc_term->first_column : 0,2572 .err_val = loc_val ? loc_val->first_column : 0,2573 };2574 2575 return new_term(term, &temp, /*str=*/NULL, num);2576}2577 2578int parse_events_term__str(struct parse_events_term **term,2579 enum parse_events__term_type type_term,2580 char *config, char *str,2581 void *loc_term_, void *loc_val_)2582{2583 YYLTYPE *loc_term = loc_term_;2584 YYLTYPE *loc_val = loc_val_;2585 2586 struct parse_events_term temp = {2587 .type_val = PARSE_EVENTS__TERM_TYPE_STR,2588 .type_term = type_term,2589 .config = config,2590 .err_term = loc_term ? loc_term->first_column : 0,2591 .err_val = loc_val ? loc_val->first_column : 0,2592 };2593 2594 return new_term(term, &temp, str, /*num=*/0);2595}2596 2597int parse_events_term__term(struct parse_events_term **term,2598 enum parse_events__term_type term_lhs,2599 enum parse_events__term_type term_rhs,2600 void *loc_term, void *loc_val)2601{2602 return parse_events_term__str(term, term_lhs, NULL,2603 strdup(config_term_name(term_rhs)),2604 loc_term, loc_val);2605}2606 2607int parse_events_term__clone(struct parse_events_term **new,2608 const struct parse_events_term *term)2609{2610 char *str;2611 struct parse_events_term temp = *term;2612 2613 temp.used = false;2614 if (term->config) {2615 temp.config = strdup(term->config);2616 if (!temp.config)2617 return -ENOMEM;2618 }2619 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM)2620 return new_term(new, &temp, /*str=*/NULL, term->val.num);2621 2622 str = strdup(term->val.str);2623 if (!str) {2624 zfree(&temp.config);2625 return -ENOMEM;2626 }2627 return new_term(new, &temp, str, /*num=*/0);2628}2629 2630void parse_events_term__delete(struct parse_events_term *term)2631{2632 if (term->type_val != PARSE_EVENTS__TERM_TYPE_NUM)2633 zfree(&term->val.str);2634 2635 zfree(&term->config);2636 free(term);2637}2638 2639static int parse_events_terms__copy(const struct parse_events_terms *src,2640 struct parse_events_terms *dest)2641{2642 struct parse_events_term *term;2643 2644 list_for_each_entry (term, &src->terms, list) {2645 struct parse_events_term *n;2646 int ret;2647 2648 ret = parse_events_term__clone(&n, term);2649 if (ret)2650 return ret;2651 2652 list_add_tail(&n->list, &dest->terms);2653 }2654 return 0;2655}2656 2657void parse_events_terms__init(struct parse_events_terms *terms)2658{2659 INIT_LIST_HEAD(&terms->terms);2660}2661 2662void parse_events_terms__exit(struct parse_events_terms *terms)2663{2664 struct parse_events_term *term, *h;2665 2666 list_for_each_entry_safe(term, h, &terms->terms, list) {2667 list_del_init(&term->list);2668 parse_events_term__delete(term);2669 }2670}2671 2672void parse_events_terms__delete(struct parse_events_terms *terms)2673{2674 if (!terms)2675 return;2676 parse_events_terms__exit(terms);2677 free(terms);2678}2679 2680int parse_events_terms__to_strbuf(const struct parse_events_terms *terms, struct strbuf *sb)2681{2682 struct parse_events_term *term;2683 bool first = true;2684 2685 if (!terms)2686 return 0;2687 2688 list_for_each_entry(term, &terms->terms, list) {2689 int ret;2690 2691 if (!first) {2692 ret = strbuf_addch(sb, ',');2693 if (ret < 0)2694 return ret;2695 }2696 first = false;2697 2698 if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM)2699 if (term->no_value) {2700 assert(term->val.num == 1);2701 ret = strbuf_addf(sb, "%s", term->config);2702 } else2703 ret = strbuf_addf(sb, "%s=%#"PRIx64, term->config, term->val.num);2704 else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) {2705 if (term->config) {2706 ret = strbuf_addf(sb, "%s=", term->config);2707 if (ret < 0)2708 return ret;2709 } else if ((unsigned int)term->type_term < __PARSE_EVENTS__TERM_TYPE_NR) {2710 ret = strbuf_addf(sb, "%s=", config_term_name(term->type_term));2711 if (ret < 0)2712 return ret;2713 }2714 assert(!term->no_value);2715 ret = strbuf_addf(sb, "%s", term->val.str);2716 }2717 if (ret < 0)2718 return ret;2719 }2720 return 0;2721}2722 2723static void config_terms_list(char *buf, size_t buf_sz)2724{2725 int i;2726 bool first = true;2727 2728 buf[0] = '\0';2729 for (i = 0; i < __PARSE_EVENTS__TERM_TYPE_NR; i++) {2730 const char *name = config_term_name(i);2731 2732 if (!config_term_avail(i, NULL))2733 continue;2734 if (!name)2735 continue;2736 if (name[0] == '<')2737 continue;2738 2739 if (strlen(buf) + strlen(name) + 2 >= buf_sz)2740 return;2741 2742 if (!first)2743 strcat(buf, ",");2744 else2745 first = false;2746 strcat(buf, name);2747 }2748}2749 2750/*2751 * Return string contains valid config terms of an event.2752 * @additional_terms: For terms such as PMU sysfs terms.2753 */2754char *parse_events_formats_error_string(char *additional_terms)2755{2756 char *str;2757 /* "no-overwrite" is the longest name */2758 char static_terms[__PARSE_EVENTS__TERM_TYPE_NR *2759 (sizeof("no-overwrite") - 1)];2760 2761 config_terms_list(static_terms, sizeof(static_terms));2762 /* valid terms */2763 if (additional_terms) {2764 if (asprintf(&str, "valid terms: %s,%s",2765 additional_terms, static_terms) < 0)2766 goto fail;2767 } else {2768 if (asprintf(&str, "valid terms: %s", static_terms) < 0)2769 goto fail;2770 }2771 return str;2772 2773fail:2774 return NULL;2775}2776