diff options
Diffstat (limited to 'tools/perf/util/parse-events.c')
| -rw-r--r-- | tools/perf/util/parse-events.c | 2694 |
1 files changed, 2694 insertions, 0 deletions
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c new file mode 100644 index 0000000000..65608a3cba --- /dev/null +++ b/tools/perf/util/parse-events.c @@ -0,0 +1,2694 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/hw_breakpoint.h> +#include <linux/err.h> +#include <linux/list_sort.h> +#include <linux/zalloc.h> +#include <dirent.h> +#include <errno.h> +#include <sys/ioctl.h> +#include <sys/param.h> +#include "term.h" +#include "evlist.h" +#include "evsel.h" +#include <subcmd/parse-options.h> +#include "parse-events.h" +#include "string2.h" +#include "strbuf.h" +#include "debug.h" +#include <api/fs/tracing_path.h> +#include <perf/cpumap.h> +#include <util/parse-events-bison.h> +#include <util/parse-events-flex.h> +#include "pmu.h" +#include "pmus.h" +#include "asm/bug.h" +#include "util/parse-branch-options.h" +#include "util/evsel_config.h" +#include "util/event.h" +#include "util/bpf-filter.h" +#include "util/util.h" +#include "tracepoint.h" + +#define MAX_NAME_LEN 100 + +#ifdef PARSER_DEBUG +extern int parse_events_debug; +#endif +static int get_config_terms(struct list_head *head_config, + struct list_head *head_terms __maybe_unused); + +struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = { + [PERF_COUNT_HW_CPU_CYCLES] = { + .symbol = "cpu-cycles", + .alias = "cycles", + }, + [PERF_COUNT_HW_INSTRUCTIONS] = { + .symbol = "instructions", + .alias = "", + }, + [PERF_COUNT_HW_CACHE_REFERENCES] = { + .symbol = "cache-references", + .alias = "", + }, + [PERF_COUNT_HW_CACHE_MISSES] = { + .symbol = "cache-misses", + .alias = "", + }, + [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = { + .symbol = "branch-instructions", + .alias = "branches", + }, + [PERF_COUNT_HW_BRANCH_MISSES] = { + .symbol = "branch-misses", + .alias = "", + }, + [PERF_COUNT_HW_BUS_CYCLES] = { + .symbol = "bus-cycles", + .alias = "", + }, + [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = { + .symbol = "stalled-cycles-frontend", + .alias = "idle-cycles-frontend", + }, + [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = { + .symbol = "stalled-cycles-backend", + .alias = "idle-cycles-backend", + }, + [PERF_COUNT_HW_REF_CPU_CYCLES] = { + .symbol = "ref-cycles", + .alias = "", + }, +}; + +struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = { + [PERF_COUNT_SW_CPU_CLOCK] = { + .symbol = "cpu-clock", + .alias = "", + }, + [PERF_COUNT_SW_TASK_CLOCK] = { + .symbol = "task-clock", + .alias = "", + }, + [PERF_COUNT_SW_PAGE_FAULTS] = { + .symbol = "page-faults", + .alias = "faults", + }, + [PERF_COUNT_SW_CONTEXT_SWITCHES] = { + .symbol = "context-switches", + .alias = "cs", + }, + [PERF_COUNT_SW_CPU_MIGRATIONS] = { + .symbol = "cpu-migrations", + .alias = "migrations", + }, + [PERF_COUNT_SW_PAGE_FAULTS_MIN] = { + .symbol = "minor-faults", + .alias = "", + }, + [PERF_COUNT_SW_PAGE_FAULTS_MAJ] = { + .symbol = "major-faults", + .alias = "", + }, + [PERF_COUNT_SW_ALIGNMENT_FAULTS] = { + .symbol = "alignment-faults", + .alias = "", + }, + [PERF_COUNT_SW_EMULATION_FAULTS] = { + .symbol = "emulation-faults", + .alias = "", + }, + [PERF_COUNT_SW_DUMMY] = { + .symbol = "dummy", + .alias = "", + }, + [PERF_COUNT_SW_BPF_OUTPUT] = { + .symbol = "bpf-output", + .alias = "", + }, + [PERF_COUNT_SW_CGROUP_SWITCHES] = { + .symbol = "cgroup-switches", + .alias = "", + }, +}; + +const char *event_type(int type) +{ + switch (type) { + case PERF_TYPE_HARDWARE: + return "hardware"; + + case PERF_TYPE_SOFTWARE: + return "software"; + + case PERF_TYPE_TRACEPOINT: + return "tracepoint"; + + case PERF_TYPE_HW_CACHE: + return "hardware-cache"; + + default: + break; + } + + return "unknown"; +} + +static char *get_config_str(struct list_head *head_terms, enum parse_events__term_type type_term) +{ + struct parse_events_term *term; + + if (!head_terms) + return NULL; + + list_for_each_entry(term, head_terms, list) + if (term->type_term == type_term) + return term->val.str; + + return NULL; +} + +static char *get_config_metric_id(struct list_head *head_terms) +{ + return get_config_str(head_terms, PARSE_EVENTS__TERM_TYPE_METRIC_ID); +} + +static char *get_config_name(struct list_head *head_terms) +{ + return get_config_str(head_terms, PARSE_EVENTS__TERM_TYPE_NAME); +} + +/** + * fix_raw - For each raw term see if there is an event (aka alias) in pmu that + * matches the raw's string value. If the string value matches an + * event then change the term to be an event, if not then change it to + * be a config term. For example, "read" may be an event of the PMU or + * a raw hex encoding of 0xead. The fix-up is done late so the PMU of + * the event can be determined and we don't need to scan all PMUs + * ahead-of-time. + * @config_terms: the list of terms that may contain a raw term. + * @pmu: the PMU to scan for events from. + */ +static void fix_raw(struct list_head *config_terms, struct perf_pmu *pmu) +{ + struct parse_events_term *term; + + list_for_each_entry(term, config_terms, list) { + u64 num; + + if (term->type_term != PARSE_EVENTS__TERM_TYPE_RAW) + continue; + + if (perf_pmu__have_event(pmu, term->val.str)) { + zfree(&term->config); + term->config = term->val.str; + term->type_val = PARSE_EVENTS__TERM_TYPE_NUM; + term->type_term = PARSE_EVENTS__TERM_TYPE_USER; + term->val.num = 1; + term->no_value = true; + continue; + } + + zfree(&term->config); + term->config = strdup("config"); + errno = 0; + num = strtoull(term->val.str + 1, NULL, 16); + assert(errno == 0); + free(term->val.str); + term->type_val = PARSE_EVENTS__TERM_TYPE_NUM; + term->type_term = PARSE_EVENTS__TERM_TYPE_CONFIG; + term->val.num = num; + term->no_value = false; + } +} + +static struct evsel * +__add_event(struct list_head *list, int *idx, + struct perf_event_attr *attr, + bool init_attr, + const char *name, const char *metric_id, struct perf_pmu *pmu, + struct list_head *config_terms, bool auto_merge_stats, + const char *cpu_list) +{ + struct evsel *evsel; + struct perf_cpu_map *cpus = pmu ? perf_cpu_map__get(pmu->cpus) : + cpu_list ? perf_cpu_map__new(cpu_list) : NULL; + + if (pmu) + perf_pmu__warn_invalid_formats(pmu); + + if (pmu && (attr->type == PERF_TYPE_RAW || attr->type >= PERF_TYPE_MAX)) { + perf_pmu__warn_invalid_config(pmu, attr->config, name, + PERF_PMU_FORMAT_VALUE_CONFIG, "config"); + perf_pmu__warn_invalid_config(pmu, attr->config1, name, + PERF_PMU_FORMAT_VALUE_CONFIG1, "config1"); + perf_pmu__warn_invalid_config(pmu, attr->config2, name, + PERF_PMU_FORMAT_VALUE_CONFIG2, "config2"); + perf_pmu__warn_invalid_config(pmu, attr->config3, name, + PERF_PMU_FORMAT_VALUE_CONFIG3, "config3"); + } + if (init_attr) + event_attr_init(attr); + + evsel = evsel__new_idx(attr, *idx); + if (!evsel) { + perf_cpu_map__put(cpus); + return NULL; + } + + (*idx)++; + evsel->core.cpus = cpus; + evsel->core.own_cpus = perf_cpu_map__get(cpus); + evsel->core.requires_cpu = pmu ? pmu->is_uncore : false; + evsel->core.is_pmu_core = pmu ? pmu->is_core : false; + evsel->auto_merge_stats = auto_merge_stats; + evsel->pmu = pmu; + evsel->pmu_name = pmu ? strdup(pmu->name) : NULL; + + if (name) + evsel->name = strdup(name); + + if (metric_id) + evsel->metric_id = strdup(metric_id); + + if (config_terms) + list_splice_init(config_terms, &evsel->config_terms); + + if (list) + list_add_tail(&evsel->core.node, list); + + return evsel; +} + +struct evsel *parse_events__add_event(int idx, struct perf_event_attr *attr, + const char *name, const char *metric_id, + struct perf_pmu *pmu) +{ + return __add_event(/*list=*/NULL, &idx, attr, /*init_attr=*/false, name, + metric_id, pmu, /*config_terms=*/NULL, + /*auto_merge_stats=*/false, /*cpu_list=*/NULL); +} + +static int add_event(struct list_head *list, int *idx, + struct perf_event_attr *attr, const char *name, + const char *metric_id, struct list_head *config_terms) +{ + return __add_event(list, idx, attr, /*init_attr*/true, name, metric_id, + /*pmu=*/NULL, config_terms, + /*auto_merge_stats=*/false, /*cpu_list=*/NULL) ? 0 : -ENOMEM; +} + +static int add_event_tool(struct list_head *list, int *idx, + enum perf_tool_event tool_event) +{ + struct evsel *evsel; + struct perf_event_attr attr = { + .type = PERF_TYPE_SOFTWARE, + .config = PERF_COUNT_SW_DUMMY, + }; + + evsel = __add_event(list, idx, &attr, /*init_attr=*/true, /*name=*/NULL, + /*metric_id=*/NULL, /*pmu=*/NULL, + /*config_terms=*/NULL, /*auto_merge_stats=*/false, + /*cpu_list=*/"0"); + if (!evsel) + return -ENOMEM; + evsel->tool_event = tool_event; + if (tool_event == PERF_TOOL_DURATION_TIME + || tool_event == PERF_TOOL_USER_TIME + || tool_event == PERF_TOOL_SYSTEM_TIME) { + free((char *)evsel->unit); + evsel->unit = strdup("ns"); + } + return 0; +} + +/** + * parse_aliases - search names for entries beginning or equalling str ignoring + * case. If mutliple entries in names match str then the longest + * is chosen. + * @str: The needle to look for. + * @names: The haystack to search. + * @size: The size of the haystack. + * @longest: Out argument giving the length of the matching entry. + */ +static int parse_aliases(const char *str, const char *const names[][EVSEL__MAX_ALIASES], int size, + int *longest) +{ + *longest = -1; + for (int i = 0; i < size; i++) { + for (int j = 0; j < EVSEL__MAX_ALIASES && names[i][j]; j++) { + int n = strlen(names[i][j]); + + if (n > *longest && !strncasecmp(str, names[i][j], n)) + *longest = n; + } + if (*longest > 0) + return i; + } + + return -1; +} + +typedef int config_term_func_t(struct perf_event_attr *attr, + struct parse_events_term *term, + struct parse_events_error *err); +static int config_term_common(struct perf_event_attr *attr, + struct parse_events_term *term, + struct parse_events_error *err); +static int config_attr(struct perf_event_attr *attr, + struct list_head *head, + struct parse_events_error *err, + config_term_func_t config_term); + +/** + * parse_events__decode_legacy_cache - Search name for the legacy cache event + * name composed of 1, 2 or 3 hyphen + * separated sections. The first section is + * the cache type while the others are the + * optional op and optional result. To make + * life hard the names in the table also + * contain hyphens and the longest name + * should always be selected. + */ +int parse_events__decode_legacy_cache(const char *name, int extended_pmu_type, __u64 *config) +{ + int len, cache_type = -1, cache_op = -1, cache_result = -1; + const char *name_end = &name[strlen(name) + 1]; + const char *str = name; + + cache_type = parse_aliases(str, evsel__hw_cache, PERF_COUNT_HW_CACHE_MAX, &len); + if (cache_type == -1) + return -EINVAL; + str += len + 1; + + if (str < name_end) { + cache_op = parse_aliases(str, evsel__hw_cache_op, + PERF_COUNT_HW_CACHE_OP_MAX, &len); + if (cache_op >= 0) { + if (!evsel__is_cache_op_valid(cache_type, cache_op)) + return -EINVAL; + str += len + 1; + } else { + cache_result = parse_aliases(str, evsel__hw_cache_result, + PERF_COUNT_HW_CACHE_RESULT_MAX, &len); + if (cache_result >= 0) + str += len + 1; + } + } + if (str < name_end) { + if (cache_op < 0) { + cache_op = parse_aliases(str, evsel__hw_cache_op, + PERF_COUNT_HW_CACHE_OP_MAX, &len); + if (cache_op >= 0) { + if (!evsel__is_cache_op_valid(cache_type, cache_op)) + return -EINVAL; + } + } else if (cache_result < 0) { + cache_result = parse_aliases(str, evsel__hw_cache_result, + PERF_COUNT_HW_CACHE_RESULT_MAX, &len); + } + } + + /* + * Fall back to reads: + */ + if (cache_op == -1) + cache_op = PERF_COUNT_HW_CACHE_OP_READ; + + /* + * Fall back to accesses: + */ + if (cache_result == -1) + cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS; + + *config = cache_type | (cache_op << 8) | (cache_result << 16); + if (perf_pmus__supports_extended_type()) + *config |= (__u64)extended_pmu_type << PERF_PMU_TYPE_SHIFT; + return 0; +} + +/** + * parse_events__filter_pmu - returns false if a wildcard PMU should be + * considered, true if it should be filtered. + */ +bool parse_events__filter_pmu(const struct parse_events_state *parse_state, + const struct perf_pmu *pmu) +{ + if (parse_state->pmu_filter == NULL) + return false; + + return strcmp(parse_state->pmu_filter, pmu->name) != 0; +} + +int parse_events_add_cache(struct list_head *list, int *idx, const char *name, + struct parse_events_state *parse_state, + struct list_head *head_config) +{ + struct perf_pmu *pmu = NULL; + bool found_supported = false; + const char *config_name = get_config_name(head_config); + const char *metric_id = get_config_metric_id(head_config); + + /* Legacy cache events are only supported by core PMUs. */ + while ((pmu = perf_pmus__scan_core(pmu)) != NULL) { + LIST_HEAD(config_terms); + struct perf_event_attr attr; + int ret; + + if (parse_events__filter_pmu(parse_state, pmu)) + continue; + + memset(&attr, 0, sizeof(attr)); + attr.type = PERF_TYPE_HW_CACHE; + + ret = parse_events__decode_legacy_cache(name, pmu->type, &attr.config); + if (ret) + return ret; + + found_supported = true; + + if (head_config) { + if (config_attr(&attr, head_config, parse_state->error, config_term_common)) + return -EINVAL; + + if (get_config_terms(head_config, &config_terms)) + return -ENOMEM; + } + + if (__add_event(list, idx, &attr, /*init_attr*/true, config_name ?: name, + metric_id, pmu, &config_terms, /*auto_merge_stats=*/false, + /*cpu_list=*/NULL) == NULL) + return -ENOMEM; + + free_config_terms(&config_terms); + } + return found_supported ? 0 : -EINVAL; +} + +#ifdef HAVE_LIBTRACEEVENT +static void tracepoint_error(struct parse_events_error *e, int err, + const char *sys, const char *name, int column) +{ + const char *str; + char help[BUFSIZ]; + + if (!e) + return; + + /* + * We get error directly from syscall errno ( > 0), + * or from encoded pointer's error ( < 0). + */ + err = abs(err); + + switch (err) { + case EACCES: + str = "can't access trace events"; + break; + case ENOENT: + str = "unknown tracepoint"; + break; + default: + str = "failed to add tracepoint"; + break; + } + + tracing_path__strerror_open_tp(err, help, sizeof(help), sys, name); + parse_events_error__handle(e, column, strdup(str), strdup(help)); +} + +static int add_tracepoint(struct list_head *list, int *idx, + const char *sys_name, const char *evt_name, + struct parse_events_error *err, + struct list_head *head_config, void *loc_) +{ + YYLTYPE *loc = loc_; + struct evsel *evsel = evsel__newtp_idx(sys_name, evt_name, (*idx)++); + + if (IS_ERR(evsel)) { + tracepoint_error(err, PTR_ERR(evsel), sys_name, evt_name, loc->first_column); + return PTR_ERR(evsel); + } + + if (head_config) { + LIST_HEAD(config_terms); + + if (get_config_terms(head_config, &config_terms)) + return -ENOMEM; + list_splice(&config_terms, &evsel->config_terms); + } + + list_add_tail(&evsel->core.node, list); + return 0; +} + +static int add_tracepoint_multi_event(struct list_head *list, int *idx, + const char *sys_name, const char *evt_name, + struct parse_events_error *err, + struct list_head *head_config, YYLTYPE *loc) +{ + char *evt_path; + struct dirent *evt_ent; + DIR *evt_dir; + int ret = 0, found = 0; + + evt_path = get_events_file(sys_name); + if (!evt_path) { + tracepoint_error(err, errno, sys_name, evt_name, loc->first_column); + return -1; + } + evt_dir = opendir(evt_path); + if (!evt_dir) { + put_events_file(evt_path); + tracepoint_error(err, errno, sys_name, evt_name, loc->first_column); + return -1; + } + + while (!ret && (evt_ent = readdir(evt_dir))) { + if (!strcmp(evt_ent->d_name, ".") + || !strcmp(evt_ent->d_name, "..") + || !strcmp(evt_ent->d_name, "enable") + || !strcmp(evt_ent->d_name, "filter")) + continue; + + if (!strglobmatch(evt_ent->d_name, evt_name)) + continue; + + found++; + + ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name, + err, head_config, loc); + } + + if (!found) { + tracepoint_error(err, ENOENT, sys_name, evt_name, loc->first_column); + ret = -1; + } + + put_events_file(evt_path); + closedir(evt_dir); + return ret; +} + +static int add_tracepoint_event(struct list_head *list, int *idx, + const char *sys_name, const char *evt_name, + struct parse_events_error *err, + struct list_head *head_config, YYLTYPE *loc) +{ + return strpbrk(evt_name, "*?") ? + add_tracepoint_multi_event(list, idx, sys_name, evt_name, + err, head_config, loc) : + add_tracepoint(list, idx, sys_name, evt_name, + err, head_config, loc); +} + +static int add_tracepoint_multi_sys(struct list_head *list, int *idx, + const char *sys_name, const char *evt_name, + struct parse_events_error *err, + struct list_head *head_config, YYLTYPE *loc) +{ + struct dirent *events_ent; + DIR *events_dir; + int ret = 0; + + events_dir = tracing_events__opendir(); + if (!events_dir) { + tracepoint_error(err, errno, sys_name, evt_name, loc->first_column); + return -1; + } + + while (!ret && (events_ent = readdir(events_dir))) { + if (!strcmp(events_ent->d_name, ".") + || !strcmp(events_ent->d_name, "..") + || !strcmp(events_ent->d_name, "enable") + || !strcmp(events_ent->d_name, "header_event") + || !strcmp(events_ent->d_name, "header_page")) + continue; + + if (!strglobmatch(events_ent->d_name, sys_name)) + continue; + + ret = add_tracepoint_event(list, idx, events_ent->d_name, + evt_name, err, head_config, loc); + } + + closedir(events_dir); + return ret; +} +#endif /* HAVE_LIBTRACEEVENT */ + +static int +parse_breakpoint_type(const char *type, struct perf_event_attr *attr) +{ + int i; + + for (i = 0; i < 3; i++) { + if (!type || !type[i]) + break; + +#define CHECK_SET_TYPE(bit) \ +do { \ + if (attr->bp_type & bit) \ + return -EINVAL; \ + else \ + attr->bp_type |= bit; \ +} while (0) + + switch (type[i]) { + case 'r': + CHECK_SET_TYPE(HW_BREAKPOINT_R); + break; + case 'w': + CHECK_SET_TYPE(HW_BREAKPOINT_W); + break; + case 'x': + CHECK_SET_TYPE(HW_BREAKPOINT_X); + break; + default: + return -EINVAL; + } + } + +#undef CHECK_SET_TYPE + + if (!attr->bp_type) /* Default */ + attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W; + + return 0; +} + +int parse_events_add_breakpoint(struct parse_events_state *parse_state, + struct list_head *list, + u64 addr, char *type, u64 len, + struct list_head *head_config __maybe_unused) +{ + struct perf_event_attr attr; + LIST_HEAD(config_terms); + const char *name; + + memset(&attr, 0, sizeof(attr)); + attr.bp_addr = addr; + + if (parse_breakpoint_type(type, &attr)) + return -EINVAL; + + /* Provide some defaults if len is not specified */ + if (!len) { + if (attr.bp_type == HW_BREAKPOINT_X) + len = sizeof(long); + else + len = HW_BREAKPOINT_LEN_4; + } + + attr.bp_len = len; + + attr.type = PERF_TYPE_BREAKPOINT; + attr.sample_period = 1; + + if (head_config) { + if (config_attr(&attr, head_config, parse_state->error, + config_term_common)) + return -EINVAL; + + if (get_config_terms(head_config, &config_terms)) + return -ENOMEM; + } + + name = get_config_name(head_config); + + return add_event(list, &parse_state->idx, &attr, name, /*mertic_id=*/NULL, + &config_terms); +} + +static int check_type_val(struct parse_events_term *term, + struct parse_events_error *err, + enum parse_events__term_val_type type) +{ + if (type == term->type_val) + return 0; + + if (err) { + parse_events_error__handle(err, term->err_val, + type == PARSE_EVENTS__TERM_TYPE_NUM + ? strdup("expected numeric value") + : strdup("expected string value"), + NULL); + } + return -EINVAL; +} + +static bool config_term_shrinked; + +static const char *config_term_name(enum parse_events__term_type term_type) +{ + /* + * Update according to parse-events.l + */ + static const char *config_term_names[__PARSE_EVENTS__TERM_TYPE_NR] = { + [PARSE_EVENTS__TERM_TYPE_USER] = "<sysfs term>", + [PARSE_EVENTS__TERM_TYPE_CONFIG] = "config", + [PARSE_EVENTS__TERM_TYPE_CONFIG1] = "config1", + [PARSE_EVENTS__TERM_TYPE_CONFIG2] = "config2", + [PARSE_EVENTS__TERM_TYPE_CONFIG3] = "config3", + [PARSE_EVENTS__TERM_TYPE_NAME] = "name", + [PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD] = "period", + [PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ] = "freq", + [PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE] = "branch_type", + [PARSE_EVENTS__TERM_TYPE_TIME] = "time", + [PARSE_EVENTS__TERM_TYPE_CALLGRAPH] = "call-graph", + [PARSE_EVENTS__TERM_TYPE_STACKSIZE] = "stack-size", + [PARSE_EVENTS__TERM_TYPE_NOINHERIT] = "no-inherit", + [PARSE_EVENTS__TERM_TYPE_INHERIT] = "inherit", + [PARSE_EVENTS__TERM_TYPE_MAX_STACK] = "max-stack", + [PARSE_EVENTS__TERM_TYPE_MAX_EVENTS] = "nr", + [PARSE_EVENTS__TERM_TYPE_OVERWRITE] = "overwrite", + [PARSE_EVENTS__TERM_TYPE_NOOVERWRITE] = "no-overwrite", + [PARSE_EVENTS__TERM_TYPE_DRV_CFG] = "driver-config", + [PARSE_EVENTS__TERM_TYPE_PERCORE] = "percore", + [PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT] = "aux-output", + [PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE] = "aux-sample-size", + [PARSE_EVENTS__TERM_TYPE_METRIC_ID] = "metric-id", + [PARSE_EVENTS__TERM_TYPE_RAW] = "raw", + [PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE] = "legacy-cache", + [PARSE_EVENTS__TERM_TYPE_HARDWARE] = "hardware", + }; + if ((unsigned int)term_type >= __PARSE_EVENTS__TERM_TYPE_NR) + return "unknown term"; + + return config_term_names[term_type]; +} + +static bool +config_term_avail(enum parse_events__term_type term_type, struct parse_events_error *err) +{ + char *err_str; + + if (term_type < 0 || term_type >= __PARSE_EVENTS__TERM_TYPE_NR) { + parse_events_error__handle(err, -1, + strdup("Invalid term_type"), NULL); + return false; + } + if (!config_term_shrinked) + return true; + + switch (term_type) { + case PARSE_EVENTS__TERM_TYPE_CONFIG: + case PARSE_EVENTS__TERM_TYPE_CONFIG1: + case PARSE_EVENTS__TERM_TYPE_CONFIG2: + case PARSE_EVENTS__TERM_TYPE_CONFIG3: + case PARSE_EVENTS__TERM_TYPE_NAME: + case PARSE_EVENTS__TERM_TYPE_METRIC_ID: + case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: + case PARSE_EVENTS__TERM_TYPE_PERCORE: + return true; + case PARSE_EVENTS__TERM_TYPE_USER: + case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: + case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: + case PARSE_EVENTS__TERM_TYPE_TIME: + case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: + case PARSE_EVENTS__TERM_TYPE_STACKSIZE: + case PARSE_EVENTS__TERM_TYPE_NOINHERIT: + case PARSE_EVENTS__TERM_TYPE_INHERIT: + case PARSE_EVENTS__TERM_TYPE_MAX_STACK: + case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: + case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: + case PARSE_EVENTS__TERM_TYPE_OVERWRITE: + case PARSE_EVENTS__TERM_TYPE_DRV_CFG: + case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: + case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: + case PARSE_EVENTS__TERM_TYPE_RAW: + case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE: + case PARSE_EVENTS__TERM_TYPE_HARDWARE: + default: + if (!err) + return false; + + /* term_type is validated so indexing is safe */ + if (asprintf(&err_str, "'%s' is not usable in 'perf stat'", + config_term_name(term_type)) >= 0) + parse_events_error__handle(err, -1, err_str, NULL); + return false; + } +} + +void parse_events__shrink_config_terms(void) +{ + config_term_shrinked = true; +} + +static int config_term_common(struct perf_event_attr *attr, + struct parse_events_term *term, + struct parse_events_error *err) +{ +#define CHECK_TYPE_VAL(type) \ +do { \ + if (check_type_val(term, err, PARSE_EVENTS__TERM_TYPE_ ## type)) \ + return -EINVAL; \ +} while (0) + + switch (term->type_term) { + case PARSE_EVENTS__TERM_TYPE_CONFIG: + CHECK_TYPE_VAL(NUM); + attr->config = term->val.num; + break; + case PARSE_EVENTS__TERM_TYPE_CONFIG1: + CHECK_TYPE_VAL(NUM); + attr->config1 = term->val.num; + break; + case PARSE_EVENTS__TERM_TYPE_CONFIG2: + CHECK_TYPE_VAL(NUM); + attr->config2 = term->val.num; + break; + case PARSE_EVENTS__TERM_TYPE_CONFIG3: + CHECK_TYPE_VAL(NUM); + attr->config3 = term->val.num; + break; + case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: + CHECK_TYPE_VAL(NUM); + break; + case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: + CHECK_TYPE_VAL(NUM); + break; + case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: + CHECK_TYPE_VAL(STR); + if (strcmp(term->val.str, "no") && + parse_branch_str(term->val.str, + &attr->branch_sample_type)) { + parse_events_error__handle(err, term->err_val, + strdup("invalid branch sample type"), + NULL); + return -EINVAL; + } + break; + case PARSE_EVENTS__TERM_TYPE_TIME: + CHECK_TYPE_VAL(NUM); + if (term->val.num > 1) { + parse_events_error__handle(err, term->err_val, + strdup("expected 0 or 1"), + NULL); + return -EINVAL; + } + break; + case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: + CHECK_TYPE_VAL(STR); + break; + case PARSE_EVENTS__TERM_TYPE_STACKSIZE: + CHECK_TYPE_VAL(NUM); + break; + case PARSE_EVENTS__TERM_TYPE_INHERIT: + CHECK_TYPE_VAL(NUM); + break; + case PARSE_EVENTS__TERM_TYPE_NOINHERIT: + CHECK_TYPE_VAL(NUM); + break; + case PARSE_EVENTS__TERM_TYPE_OVERWRITE: + CHECK_TYPE_VAL(NUM); + break; + case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: + CHECK_TYPE_VAL(NUM); + break; + case PARSE_EVENTS__TERM_TYPE_NAME: + CHECK_TYPE_VAL(STR); + break; + case PARSE_EVENTS__TERM_TYPE_METRIC_ID: + CHECK_TYPE_VAL(STR); + break; + case PARSE_EVENTS__TERM_TYPE_RAW: + CHECK_TYPE_VAL(STR); + break; + case PARSE_EVENTS__TERM_TYPE_MAX_STACK: + CHECK_TYPE_VAL(NUM); + break; + case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: + CHECK_TYPE_VAL(NUM); + break; + case PARSE_EVENTS__TERM_TYPE_PERCORE: + CHECK_TYPE_VAL(NUM); + if ((unsigned int)term->val.num > 1) { + parse_events_error__handle(err, term->err_val, + strdup("expected 0 or 1"), + NULL); + return -EINVAL; + } + break; + case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: + CHECK_TYPE_VAL(NUM); + break; + case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: + CHECK_TYPE_VAL(NUM); + if (term->val.num > UINT_MAX) { + parse_events_error__handle(err, term->err_val, + strdup("too big"), + NULL); + return -EINVAL; + } + break; + case PARSE_EVENTS__TERM_TYPE_DRV_CFG: + case PARSE_EVENTS__TERM_TYPE_USER: + case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE: + case PARSE_EVENTS__TERM_TYPE_HARDWARE: + default: + parse_events_error__handle(err, term->err_term, + strdup(config_term_name(term->type_term)), + parse_events_formats_error_string(NULL)); + return -EINVAL; + } + + /* + * Check term availability after basic checking so + * PARSE_EVENTS__TERM_TYPE_USER can be found and filtered. + * + * If check availability at the entry of this function, + * user will see "'<sysfs term>' is not usable in 'perf stat'" + * if an invalid config term is provided for legacy events + * (for example, instructions/badterm/...), which is confusing. + */ + if (!config_term_avail(term->type_term, err)) + return -EINVAL; + return 0; +#undef CHECK_TYPE_VAL +} + +static int config_term_pmu(struct perf_event_attr *attr, + struct parse_events_term *term, + struct parse_events_error *err) +{ + if (term->type_term == PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE) { + const struct perf_pmu *pmu = perf_pmus__find_by_type(attr->type); + + if (!pmu) { + char *err_str; + + if (asprintf(&err_str, "Failed to find PMU for type %d", attr->type) >= 0) + parse_events_error__handle(err, term->err_term, + err_str, /*help=*/NULL); + return -EINVAL; + } + if (perf_pmu__supports_legacy_cache(pmu)) { + attr->type = PERF_TYPE_HW_CACHE; + return parse_events__decode_legacy_cache(term->config, pmu->type, + &attr->config); + } else + term->type_term = PARSE_EVENTS__TERM_TYPE_USER; + } + if (term->type_term == PARSE_EVENTS__TERM_TYPE_HARDWARE) { + const struct perf_pmu *pmu = perf_pmus__find_by_type(attr->type); + + if (!pmu) { + char *err_str; + + if (asprintf(&err_str, "Failed to find PMU for type %d", attr->type) >= 0) + parse_events_error__handle(err, term->err_term, + err_str, /*help=*/NULL); + return -EINVAL; + } + attr->type = PERF_TYPE_HARDWARE; + attr->config = term->val.num; + if (perf_pmus__supports_extended_type()) + attr->config |= (__u64)pmu->type << PERF_PMU_TYPE_SHIFT; + return 0; + } + if (term->type_term == PARSE_EVENTS__TERM_TYPE_USER || + term->type_term == PARSE_EVENTS__TERM_TYPE_DRV_CFG) { + /* + * Always succeed for sysfs terms, as we dont know + * at this point what type they need to have. + */ + return 0; + } + return config_term_common(attr, term, err); +} + +#ifdef HAVE_LIBTRACEEVENT +static int config_term_tracepoint(struct perf_event_attr *attr, + struct parse_events_term *term, + struct parse_events_error *err) +{ + switch (term->type_term) { + case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: + case PARSE_EVENTS__TERM_TYPE_STACKSIZE: + case PARSE_EVENTS__TERM_TYPE_INHERIT: + case PARSE_EVENTS__TERM_TYPE_NOINHERIT: + case PARSE_EVENTS__TERM_TYPE_MAX_STACK: + case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: + case PARSE_EVENTS__TERM_TYPE_OVERWRITE: + case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: + case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: + case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: + return config_term_common(attr, term, err); + case PARSE_EVENTS__TERM_TYPE_USER: + case PARSE_EVENTS__TERM_TYPE_CONFIG: + case PARSE_EVENTS__TERM_TYPE_CONFIG1: + case PARSE_EVENTS__TERM_TYPE_CONFIG2: + case PARSE_EVENTS__TERM_TYPE_CONFIG3: + case PARSE_EVENTS__TERM_TYPE_NAME: + case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: + case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: + case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: + case PARSE_EVENTS__TERM_TYPE_TIME: + case PARSE_EVENTS__TERM_TYPE_DRV_CFG: + case PARSE_EVENTS__TERM_TYPE_PERCORE: + case PARSE_EVENTS__TERM_TYPE_METRIC_ID: + case PARSE_EVENTS__TERM_TYPE_RAW: + case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE: + case PARSE_EVENTS__TERM_TYPE_HARDWARE: + default: + if (err) { + parse_events_error__handle(err, term->err_term, + strdup(config_term_name(term->type_term)), + strdup("valid terms: call-graph,stack-size\n")); + } + return -EINVAL; + } + + return 0; +} +#endif + +static int config_attr(struct perf_event_attr *attr, + struct list_head *head, + struct parse_events_error *err, + config_term_func_t config_term) +{ + struct parse_events_term *term; + + list_for_each_entry(term, head, list) + if (config_term(attr, term, err)) + return -EINVAL; + + return 0; +} + +static int get_config_terms(struct list_head *head_config, + struct list_head *head_terms __maybe_unused) +{ +#define ADD_CONFIG_TERM(__type, __weak) \ + struct evsel_config_term *__t; \ + \ + __t = zalloc(sizeof(*__t)); \ + if (!__t) \ + return -ENOMEM; \ + \ + INIT_LIST_HEAD(&__t->list); \ + __t->type = EVSEL__CONFIG_TERM_ ## __type; \ + __t->weak = __weak; \ + list_add_tail(&__t->list, head_terms) + +#define ADD_CONFIG_TERM_VAL(__type, __name, __val, __weak) \ +do { \ + ADD_CONFIG_TERM(__type, __weak); \ + __t->val.__name = __val; \ +} while (0) + +#define ADD_CONFIG_TERM_STR(__type, __val, __weak) \ +do { \ + ADD_CONFIG_TERM(__type, __weak); \ + __t->val.str = strdup(__val); \ + if (!__t->val.str) { \ + zfree(&__t); \ + return -ENOMEM; \ + } \ + __t->free_str = true; \ +} while (0) + + struct parse_events_term *term; + + list_for_each_entry(term, head_config, list) { + switch (term->type_term) { + case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: + ADD_CONFIG_TERM_VAL(PERIOD, period, term->val.num, term->weak); + break; + case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: + ADD_CONFIG_TERM_VAL(FREQ, freq, term->val.num, term->weak); + break; + case PARSE_EVENTS__TERM_TYPE_TIME: + ADD_CONFIG_TERM_VAL(TIME, time, term->val.num, term->weak); + break; + case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: + ADD_CONFIG_TERM_STR(CALLGRAPH, term->val.str, term->weak); + break; + case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: + ADD_CONFIG_TERM_STR(BRANCH, term->val.str, term->weak); + break; + case PARSE_EVENTS__TERM_TYPE_STACKSIZE: + ADD_CONFIG_TERM_VAL(STACK_USER, stack_user, + term->val.num, term->weak); + break; + case PARSE_EVENTS__TERM_TYPE_INHERIT: + ADD_CONFIG_TERM_VAL(INHERIT, inherit, + term->val.num ? 1 : 0, term->weak); + break; + case PARSE_EVENTS__TERM_TYPE_NOINHERIT: + ADD_CONFIG_TERM_VAL(INHERIT, inherit, + term->val.num ? 0 : 1, term->weak); + break; + case PARSE_EVENTS__TERM_TYPE_MAX_STACK: + ADD_CONFIG_TERM_VAL(MAX_STACK, max_stack, + term->val.num, term->weak); + break; + case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: + ADD_CONFIG_TERM_VAL(MAX_EVENTS, max_events, + term->val.num, term->weak); + break; + case PARSE_EVENTS__TERM_TYPE_OVERWRITE: + ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite, + term->val.num ? 1 : 0, term->weak); + break; + case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: + ADD_CONFIG_TERM_VAL(OVERWRITE, overwrite, + term->val.num ? 0 : 1, term->weak); + break; + case PARSE_EVENTS__TERM_TYPE_DRV_CFG: + ADD_CONFIG_TERM_STR(DRV_CFG, term->val.str, term->weak); + break; + case PARSE_EVENTS__TERM_TYPE_PERCORE: + ADD_CONFIG_TERM_VAL(PERCORE, percore, + term->val.num ? true : false, term->weak); + break; + case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: + ADD_CONFIG_TERM_VAL(AUX_OUTPUT, aux_output, + term->val.num ? 1 : 0, term->weak); + break; + case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: + ADD_CONFIG_TERM_VAL(AUX_SAMPLE_SIZE, aux_sample_size, + term->val.num, term->weak); + break; + case PARSE_EVENTS__TERM_TYPE_USER: + case PARSE_EVENTS__TERM_TYPE_CONFIG: + case PARSE_EVENTS__TERM_TYPE_CONFIG1: + case PARSE_EVENTS__TERM_TYPE_CONFIG2: + case PARSE_EVENTS__TERM_TYPE_CONFIG3: + case PARSE_EVENTS__TERM_TYPE_NAME: + case PARSE_EVENTS__TERM_TYPE_METRIC_ID: + case PARSE_EVENTS__TERM_TYPE_RAW: + case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE: + case PARSE_EVENTS__TERM_TYPE_HARDWARE: + default: + break; + } + } + return 0; +} + +/* + * Add EVSEL__CONFIG_TERM_CFG_CHG where cfg_chg will have a bit set for + * each bit of attr->config that the user has changed. + */ +static int get_config_chgs(struct perf_pmu *pmu, struct list_head *head_config, + struct list_head *head_terms) +{ + struct parse_events_term *term; + u64 bits = 0; + int type; + + list_for_each_entry(term, head_config, list) { + switch (term->type_term) { + case PARSE_EVENTS__TERM_TYPE_USER: + type = perf_pmu__format_type(pmu, term->config); + if (type != PERF_PMU_FORMAT_VALUE_CONFIG) + continue; + bits |= perf_pmu__format_bits(pmu, term->config); + break; + case PARSE_EVENTS__TERM_TYPE_CONFIG: + bits = ~(u64)0; + break; + case PARSE_EVENTS__TERM_TYPE_CONFIG1: + case PARSE_EVENTS__TERM_TYPE_CONFIG2: + case PARSE_EVENTS__TERM_TYPE_CONFIG3: + case PARSE_EVENTS__TERM_TYPE_NAME: + case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD: + case PARSE_EVENTS__TERM_TYPE_SAMPLE_FREQ: + case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE: + case PARSE_EVENTS__TERM_TYPE_TIME: + case PARSE_EVENTS__TERM_TYPE_CALLGRAPH: + case PARSE_EVENTS__TERM_TYPE_STACKSIZE: + case PARSE_EVENTS__TERM_TYPE_NOINHERIT: + case PARSE_EVENTS__TERM_TYPE_INHERIT: + case PARSE_EVENTS__TERM_TYPE_MAX_STACK: + case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS: + case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE: + case PARSE_EVENTS__TERM_TYPE_OVERWRITE: + case PARSE_EVENTS__TERM_TYPE_DRV_CFG: + case PARSE_EVENTS__TERM_TYPE_PERCORE: + case PARSE_EVENTS__TERM_TYPE_AUX_OUTPUT: + case PARSE_EVENTS__TERM_TYPE_AUX_SAMPLE_SIZE: + case PARSE_EVENTS__TERM_TYPE_METRIC_ID: + case PARSE_EVENTS__TERM_TYPE_RAW: + case PARSE_EVENTS__TERM_TYPE_LEGACY_CACHE: + case PARSE_EVENTS__TERM_TYPE_HARDWARE: + default: + break; + } + } + + if (bits) + ADD_CONFIG_TERM_VAL(CFG_CHG, cfg_chg, bits, false); + +#undef ADD_CONFIG_TERM + return 0; +} + +int parse_events_add_tracepoint(struct list_head *list, int *idx, + const char *sys, const char *event, + struct parse_events_error *err, + struct list_head *head_config, void *loc_) +{ + YYLTYPE *loc = loc_; +#ifdef HAVE_LIBTRACEEVENT + if (head_config) { + struct perf_event_attr attr; + + if (config_attr(&attr, head_config, err, + config_term_tracepoint)) + return -EINVAL; + } + + if (strpbrk(sys, "*?")) + return add_tracepoint_multi_sys(list, idx, sys, event, + err, head_config, loc); + else + return add_tracepoint_event(list, idx, sys, event, + err, head_config, loc); +#else + (void)list; + (void)idx; + (void)sys; + (void)event; + (void)head_config; + parse_events_error__handle(err, loc->first_column, strdup("unsupported tracepoint"), + strdup("libtraceevent is necessary for tracepoint support")); + return -1; +#endif +} + +static int __parse_events_add_numeric(struct parse_events_state *parse_state, + struct list_head *list, + struct perf_pmu *pmu, u32 type, u32 extended_type, + u64 config, struct list_head *head_config) +{ + struct perf_event_attr attr; + LIST_HEAD(config_terms); + const char *name, *metric_id; + int ret; + + memset(&attr, 0, sizeof(attr)); + attr.type = type; + attr.config = config; + if (extended_type && (type == PERF_TYPE_HARDWARE || type == PERF_TYPE_HW_CACHE)) { + assert(perf_pmus__supports_extended_type()); + attr.config |= (u64)extended_type << PERF_PMU_TYPE_SHIFT; + } + + if (head_config) { + if (config_attr(&attr, head_config, parse_state->error, + config_term_common)) + return -EINVAL; + + if (get_config_terms(head_config, &config_terms)) + return -ENOMEM; + } + + name = get_config_name(head_config); + metric_id = get_config_metric_id(head_config); + ret = __add_event(list, &parse_state->idx, &attr, /*init_attr*/true, name, + metric_id, pmu, &config_terms, /*auto_merge_stats=*/false, + /*cpu_list=*/NULL) ? 0 : -ENOMEM; + free_config_terms(&config_terms); + return ret; +} + +int parse_events_add_numeric(struct parse_events_state *parse_state, + struct list_head *list, + u32 type, u64 config, + struct list_head *head_config, + bool wildcard) +{ + struct perf_pmu *pmu = NULL; + bool found_supported = false; + + /* Wildcards on numeric values are only supported by core PMUs. */ + if (wildcard && perf_pmus__supports_extended_type()) { + while ((pmu = perf_pmus__scan_core(pmu)) != NULL) { + int ret; + + found_supported = true; + if (parse_events__filter_pmu(parse_state, pmu)) + continue; + + ret = __parse_events_add_numeric(parse_state, list, pmu, + type, pmu->type, + config, head_config); + if (ret) + return ret; + } + if (found_supported) + return 0; + } + return __parse_events_add_numeric(parse_state, list, perf_pmus__find_by_type(type), + type, /*extended_type=*/0, config, head_config); +} + +int parse_events_add_tool(struct parse_events_state *parse_state, + struct list_head *list, + int tool_event) +{ + return add_event_tool(list, &parse_state->idx, tool_event); +} + +static bool config_term_percore(struct list_head *config_terms) +{ + struct evsel_config_term *term; + + list_for_each_entry(term, config_terms, list) { + if (term->type == EVSEL__CONFIG_TERM_PERCORE) + return term->val.percore; + } + + return false; +} + +int parse_events_add_pmu(struct parse_events_state *parse_state, + struct list_head *list, const char *name, + struct list_head *head_config, + bool auto_merge_stats, void *loc_) +{ + struct perf_event_attr attr; + struct perf_pmu_info info; + struct perf_pmu *pmu; + struct evsel *evsel; + struct parse_events_error *err = parse_state->error; + YYLTYPE *loc = loc_; + LIST_HEAD(config_terms); + + pmu = parse_state->fake_pmu ?: perf_pmus__find(name); + + if (!pmu) { + char *err_str; + + if (asprintf(&err_str, + "Cannot find PMU `%s'. Missing kernel support?", + name) >= 0) + parse_events_error__handle(err, loc->first_column, err_str, NULL); + return -EINVAL; + } + + if (verbose > 1) { + struct strbuf sb; + + strbuf_init(&sb, /*hint=*/ 0); + if (pmu->selectable && !head_config) { + strbuf_addf(&sb, "%s//", name); + } else { + strbuf_addf(&sb, "%s/", name); + parse_events_term__to_strbuf(head_config, &sb); + strbuf_addch(&sb, '/'); + } + fprintf(stderr, "Attempt to add: %s\n", sb.buf); + strbuf_release(&sb); + } + if (head_config) + fix_raw(head_config, pmu); + + if (pmu->default_config) { + memcpy(&attr, pmu->default_config, + sizeof(struct perf_event_attr)); + } else { + memset(&attr, 0, sizeof(attr)); + } + attr.type = pmu->type; + + if (!head_config) { + evsel = __add_event(list, &parse_state->idx, &attr, + /*init_attr=*/true, /*name=*/NULL, + /*metric_id=*/NULL, pmu, + /*config_terms=*/NULL, auto_merge_stats, + /*cpu_list=*/NULL); + return evsel ? 0 : -ENOMEM; + } + + if (!parse_state->fake_pmu && perf_pmu__check_alias(pmu, head_config, &info, err)) + return -EINVAL; + + if (verbose > 1) { + struct strbuf sb; + + strbuf_init(&sb, /*hint=*/ 0); + parse_events_term__to_strbuf(head_config, &sb); + fprintf(stderr, "..after resolving event: %s/%s/\n", name, sb.buf); + strbuf_release(&sb); + } + + /* + * Configure hardcoded terms first, no need to check + * return value when called with fail == 0 ;) + */ + if (config_attr(&attr, head_config, parse_state->error, config_term_pmu)) + return -EINVAL; + + if (get_config_terms(head_config, &config_terms)) + return -ENOMEM; + + /* + * When using default config, record which bits of attr->config were + * changed by the user. + */ + if (pmu->default_config && get_config_chgs(pmu, head_config, &config_terms)) + return -ENOMEM; + + if (!parse_state->fake_pmu && perf_pmu__config(pmu, &attr, head_config, parse_state->error)) { + free_config_terms(&config_terms); + return -EINVAL; + } + + evsel = __add_event(list, &parse_state->idx, &attr, /*init_attr=*/true, + get_config_name(head_config), + get_config_metric_id(head_config), pmu, + &config_terms, auto_merge_stats, /*cpu_list=*/NULL); + if (!evsel) + return -ENOMEM; + + if (evsel->name) + evsel->use_config_name = true; + + evsel->percore = config_term_percore(&evsel->config_terms); + + if (parse_state->fake_pmu) + return 0; + + free((char *)evsel->unit); + evsel->unit = strdup(info.unit); + evsel->scale = info.scale; + evsel->per_pkg = info.per_pkg; + evsel->snapshot = info.snapshot; + return 0; +} + +int parse_events_multi_pmu_add(struct parse_events_state *parse_state, + char *str, struct list_head *head, + struct list_head **listp, void *loc_) +{ + struct parse_events_term *term; + struct list_head *list = NULL; + struct list_head *orig_head = NULL; + struct perf_pmu *pmu = NULL; + YYLTYPE *loc = loc_; + int ok = 0; + const char *config; + + *listp = NULL; + + if (!head) { + head = malloc(sizeof(struct list_head)); + if (!head) + goto out_err; + + INIT_LIST_HEAD(head); + } + config = strdup(str); + if (!config) + goto out_err; + + if (parse_events_term__num(&term, + PARSE_EVENTS__TERM_TYPE_USER, + config, /*num=*/1, /*novalue=*/true, + loc, /*loc_val=*/NULL) < 0) { + zfree(&config); + goto out_err; + } + list_add_tail(&term->list, head); + + /* Add it for all PMUs that support the alias */ + list = malloc(sizeof(struct list_head)); + if (!list) + goto out_err; + + INIT_LIST_HEAD(list); + + while ((pmu = perf_pmus__scan(pmu)) != NULL) { + bool auto_merge_stats; + + if (parse_events__filter_pmu(parse_state, pmu)) + continue; + + if (!perf_pmu__have_event(pmu, str)) + continue; + + auto_merge_stats = perf_pmu__auto_merge_stats(pmu); + parse_events_copy_term_list(head, &orig_head); + if (!parse_events_add_pmu(parse_state, list, pmu->name, + orig_head, auto_merge_stats, loc)) { + struct strbuf sb; + + strbuf_init(&sb, /*hint=*/ 0); + parse_events_term__to_strbuf(orig_head, &sb); + pr_debug("%s -> %s/%s/\n", str, pmu->name, sb.buf); + strbuf_release(&sb); + ok++; + } + parse_events_terms__delete(orig_head); + } + + if (parse_state->fake_pmu) { + if (!parse_events_add_pmu(parse_state, list, str, head, + /*auto_merge_stats=*/true, loc)) { + struct strbuf sb; + + strbuf_init(&sb, /*hint=*/ 0); + parse_events_term__to_strbuf(head, &sb); + pr_debug("%s -> %s/%s/\n", str, "fake_pmu", sb.buf); + strbuf_release(&sb); + ok++; + } + } + +out_err: + if (ok) + *listp = list; + else + free(list); + + parse_events_terms__delete(head); + return ok ? 0 : -1; +} + +int parse_events__modifier_group(struct list_head *list, + char *event_mod) +{ + return parse_events__modifier_event(list, event_mod, true); +} + +void parse_events__set_leader(char *name, struct list_head *list) +{ + struct evsel *leader; + + if (list_empty(list)) { + WARN_ONCE(true, "WARNING: failed to set leader: empty list"); + return; + } + + leader = list_first_entry(list, struct evsel, core.node); + __perf_evlist__set_leader(list, &leader->core); + leader->group_name = name; +} + +/* list_event is assumed to point to malloc'ed memory */ +void parse_events_update_lists(struct list_head *list_event, + struct list_head *list_all) +{ + /* + * Called for single event definition. Update the + * 'all event' list, and reinit the 'single event' + * list, for next event definition. + */ + list_splice_tail(list_event, list_all); + free(list_event); +} + +struct event_modifier { + int eu; + int ek; + int eh; + int eH; + int eG; + int eI; + int precise; + int precise_max; + int exclude_GH; + int sample_read; + int pinned; + int weak; + int exclusive; + int bpf_counter; +}; + +static int get_event_modifier(struct event_modifier *mod, char *str, + struct evsel *evsel) +{ + int eu = evsel ? evsel->core.attr.exclude_user : 0; + int ek = evsel ? evsel->core.attr.exclude_kernel : 0; + int eh = evsel ? evsel->core.attr.exclude_hv : 0; + int eH = evsel ? evsel->core.attr.exclude_host : 0; + int eG = evsel ? evsel->core.attr.exclude_guest : 0; + int eI = evsel ? evsel->core.attr.exclude_idle : 0; + int precise = evsel ? evsel->core.attr.precise_ip : 0; + int precise_max = 0; + int sample_read = 0; + int pinned = evsel ? evsel->core.attr.pinned : 0; + int exclusive = evsel ? evsel->core.attr.exclusive : 0; + + int exclude = eu | ek | eh; + int exclude_GH = evsel ? evsel->exclude_GH : 0; + int weak = 0; + int bpf_counter = 0; + + memset(mod, 0, sizeof(*mod)); + + while (*str) { + if (*str == 'u') { + if (!exclude) + exclude = eu = ek = eh = 1; + if (!exclude_GH && !perf_guest) + eG = 1; + eu = 0; + } else if (*str == 'k') { + if (!exclude) + exclude = eu = ek = eh = 1; + ek = 0; + } else if (*str == 'h') { + if (!exclude) + exclude = eu = ek = eh = 1; + eh = 0; + } else if (*str == 'G') { + if (!exclude_GH) + exclude_GH = eG = eH = 1; + eG = 0; + } else if (*str == 'H') { + if (!exclude_GH) + exclude_GH = eG = eH = 1; + eH = 0; + } else if (*str == 'I') { + eI = 1; + } else if (*str == 'p') { + precise++; + /* use of precise requires exclude_guest */ + if (!exclude_GH) + eG = 1; + } else if (*str == 'P') { + precise_max = 1; + } else if (*str == 'S') { + sample_read = 1; + } else if (*str == 'D') { + pinned = 1; + } else if (*str == 'e') { + exclusive = 1; + } else if (*str == 'W') { + weak = 1; + } else if (*str == 'b') { + bpf_counter = 1; + } else + break; + + ++str; + } + + /* + * precise ip: + * + * 0 - SAMPLE_IP can have arbitrary skid + * 1 - SAMPLE_IP must have constant skid + * 2 - SAMPLE_IP requested to have 0 skid + * 3 - SAMPLE_IP must have 0 skid + * + * See also PERF_RECORD_MISC_EXACT_IP + */ + if (precise > 3) + return -EINVAL; + + mod->eu = eu; + mod->ek = ek; + mod->eh = eh; + mod->eH = eH; + mod->eG = eG; + mod->eI = eI; + mod->precise = precise; + mod->precise_max = precise_max; + mod->exclude_GH = exclude_GH; + mod->sample_read = sample_read; + mod->pinned = pinned; + mod->weak = weak; + mod->bpf_counter = bpf_counter; + mod->exclusive = exclusive; + + return 0; +} + +/* + * Basic modifier sanity check to validate it contains only one + * instance of any modifier (apart from 'p') present. + */ +static int check_modifier(char *str) +{ + char *p = str; + + /* The sizeof includes 0 byte as well. */ + if (strlen(str) > (sizeof("ukhGHpppPSDIWeb") - 1)) + return -1; + + while (*p) { + if (*p != 'p' && strchr(p + 1, *p)) + return -1; + p++; + } + + return 0; +} + +int parse_events__modifier_event(struct list_head *list, char *str, bool add) +{ + struct evsel *evsel; + struct event_modifier mod; + + if (str == NULL) + return 0; + + if (check_modifier(str)) + return -EINVAL; + + if (!add && get_event_modifier(&mod, str, NULL)) + return -EINVAL; + + __evlist__for_each_entry(list, evsel) { + if (add && get_event_modifier(&mod, str, evsel)) + return -EINVAL; + + evsel->core.attr.exclude_user = mod.eu; + evsel->core.attr.exclude_kernel = mod.ek; + evsel->core.attr.exclude_hv = mod.eh; + evsel->core.attr.precise_ip = mod.precise; + evsel->core.attr.exclude_host = mod.eH; + evsel->core.attr.exclude_guest = mod.eG; + evsel->core.attr.exclude_idle = mod.eI; + evsel->exclude_GH = mod.exclude_GH; + evsel->sample_read = mod.sample_read; + evsel->precise_max = mod.precise_max; + evsel->weak_group = mod.weak; + evsel->bpf_counter = mod.bpf_counter; + + if (evsel__is_group_leader(evsel)) { + evsel->core.attr.pinned = mod.pinned; + evsel->core.attr.exclusive = mod.exclusive; + } + } + + return 0; +} + +int parse_events_name(struct list_head *list, const char *name) +{ + struct evsel *evsel; + + __evlist__for_each_entry(list, evsel) { + if (!evsel->name) { + evsel->name = strdup(name); + if (!evsel->name) + return -ENOMEM; + } + } + + return 0; +} + +static int parse_events__scanner(const char *str, + FILE *input, + struct parse_events_state *parse_state) +{ + YY_BUFFER_STATE buffer; + void *scanner; + int ret; + + ret = parse_events_lex_init_extra(parse_state, &scanner); + if (ret) + return ret; + + if (str) + buffer = parse_events__scan_string(str, scanner); + else + parse_events_set_in(input, scanner); + +#ifdef PARSER_DEBUG + parse_events_debug = 1; + parse_events_set_debug(1, scanner); +#endif + ret = parse_events_parse(parse_state, scanner); + + if (str) { + parse_events__flush_buffer(buffer, scanner); + parse_events__delete_buffer(buffer, scanner); + } + parse_events_lex_destroy(scanner); + return ret; +} + +/* + * parse event config string, return a list of event terms. + */ +int parse_events_terms(struct list_head *terms, const char *str, FILE *input) +{ + struct parse_events_state parse_state = { + .terms = NULL, + .stoken = PE_START_TERMS, + }; + int ret; + + ret = parse_events__scanner(str, input, &parse_state); + + if (!ret) { + list_splice(parse_state.terms, terms); + zfree(&parse_state.terms); + return 0; + } + + parse_events_terms__delete(parse_state.terms); + return ret; +} + +static int evsel__compute_group_pmu_name(struct evsel *evsel, + const struct list_head *head) +{ + struct evsel *leader = evsel__leader(evsel); + struct evsel *pos; + const char *group_pmu_name; + struct perf_pmu *pmu = evsel__find_pmu(evsel); + + if (!pmu) { + /* + * For PERF_TYPE_HARDWARE and PERF_TYPE_HW_CACHE types the PMU + * is a core PMU, but in heterogeneous systems this is + * unknown. For now pick the first core PMU. + */ + pmu = perf_pmus__scan_core(NULL); + } + if (!pmu) { + pr_debug("No PMU found for '%s'\n", evsel__name(evsel)); + return -EINVAL; + } + group_pmu_name = pmu->name; + /* + * Software events may be in a group with other uncore PMU events. Use + * the pmu_name of the first non-software event to avoid breaking the + * software event out of the group. + * + * Aux event leaders, like intel_pt, expect a group with events from + * other PMUs, so substitute the AUX event's PMU in this case. + */ + if (perf_pmu__is_software(pmu) || evsel__is_aux_event(leader)) { + struct perf_pmu *leader_pmu = evsel__find_pmu(leader); + + if (!leader_pmu) { + /* As with determining pmu above. */ + leader_pmu = perf_pmus__scan_core(NULL); + } + /* + * Starting with the leader, find the first event with a named + * non-software PMU. for_each_group_(member|evsel) isn't used as + * the list isn't yet sorted putting evsel's in the same group + * together. + */ + if (leader_pmu && !perf_pmu__is_software(leader_pmu)) { + group_pmu_name = leader_pmu->name; + } else if (leader->core.nr_members > 1) { + list_for_each_entry(pos, head, core.node) { + struct perf_pmu *pos_pmu; + + if (pos == leader || evsel__leader(pos) != leader) + continue; + pos_pmu = evsel__find_pmu(pos); + if (!pos_pmu) { + /* As with determining pmu above. */ + pos_pmu = perf_pmus__scan_core(NULL); + } + if (pos_pmu && !perf_pmu__is_software(pos_pmu)) { + group_pmu_name = pos_pmu->name; + break; + } + } + } + } + /* Assign the actual name taking care that the fake PMU lacks a name. */ + evsel->group_pmu_name = strdup(group_pmu_name ?: "fake"); + return evsel->group_pmu_name ? 0 : -ENOMEM; +} + +__weak int arch_evlist__cmp(const struct evsel *lhs, const struct evsel *rhs) +{ + /* Order by insertion index. */ + return lhs->core.idx - rhs->core.idx; +} + +static int evlist__cmp(void *_fg_idx, const struct list_head *l, const struct list_head *r) +{ + const struct perf_evsel *lhs_core = container_of(l, struct perf_evsel, node); + const struct evsel *lhs = container_of(lhs_core, struct evsel, core); + const struct perf_evsel *rhs_core = container_of(r, struct perf_evsel, node); + const struct evsel *rhs = container_of(rhs_core, struct evsel, core); + int *force_grouped_idx = _fg_idx; + int lhs_sort_idx, rhs_sort_idx, ret; + const char *lhs_pmu_name, *rhs_pmu_name; + bool lhs_has_group, rhs_has_group; + + /* + * First sort by grouping/leader. Read the leader idx only if the evsel + * is part of a group, by default ungrouped events will be sorted + * relative to grouped events based on where the first ungrouped event + * occurs. If both events don't have a group we want to fall-through to + * the arch specific sorting, that can reorder and fix things like + * Intel's topdown events. + */ + if (lhs_core->leader != lhs_core || lhs_core->nr_members > 1) { + lhs_has_group = true; + lhs_sort_idx = lhs_core->leader->idx; + } else { + lhs_has_group = false; + lhs_sort_idx = *force_grouped_idx != -1 && arch_evsel__must_be_in_group(lhs) + ? *force_grouped_idx + : lhs_core->idx; + } + if (rhs_core->leader != rhs_core || rhs_core->nr_members > 1) { + rhs_has_group = true; + rhs_sort_idx = rhs_core->leader->idx; + } else { + rhs_has_group = false; + rhs_sort_idx = *force_grouped_idx != -1 && arch_evsel__must_be_in_group(rhs) + ? *force_grouped_idx + : rhs_core->idx; + } + + if (lhs_sort_idx != rhs_sort_idx) + return lhs_sort_idx - rhs_sort_idx; + + /* Group by PMU if there is a group. Groups can't span PMUs. */ + if (lhs_has_group && rhs_has_group) { + lhs_pmu_name = lhs->group_pmu_name; + rhs_pmu_name = rhs->group_pmu_name; + ret = strcmp(lhs_pmu_name, rhs_pmu_name); + if (ret) + return ret; + } + + /* Architecture specific sorting. */ + return arch_evlist__cmp(lhs, rhs); +} + +static int parse_events__sort_events_and_fix_groups(struct list_head *list) +{ + int idx = 0, force_grouped_idx = -1; + struct evsel *pos, *cur_leader = NULL; + struct perf_evsel *cur_leaders_grp = NULL; + bool idx_changed = false, cur_leader_force_grouped = false; + int orig_num_leaders = 0, num_leaders = 0; + int ret; + + /* + * Compute index to insert ungrouped events at. Place them where the + * first ungrouped event appears. + */ + list_for_each_entry(pos, list, core.node) { + const struct evsel *pos_leader = evsel__leader(pos); + + ret = evsel__compute_group_pmu_name(pos, list); + if (ret) + return ret; + + if (pos == pos_leader) + orig_num_leaders++; + + /* + * Ensure indexes are sequential, in particular for multiple + * event lists being merged. The indexes are used to detect when + * the user order is modified. + */ + pos->core.idx = idx++; + + /* Remember an index to sort all forced grouped events together to. */ + if (force_grouped_idx == -1 && pos == pos_leader && pos->core.nr_members < 2 && + arch_evsel__must_be_in_group(pos)) + force_grouped_idx = pos->core.idx; + } + + /* Sort events. */ + list_sort(&force_grouped_idx, list, evlist__cmp); + + /* + * Recompute groups, splitting for PMUs and adding groups for events + * that require them. + */ + idx = 0; + list_for_each_entry(pos, list, core.node) { + const struct evsel *pos_leader = evsel__leader(pos); + const char *pos_pmu_name = pos->group_pmu_name; + const char *cur_leader_pmu_name; + bool pos_force_grouped = force_grouped_idx != -1 && + arch_evsel__must_be_in_group(pos); + + /* Reset index and nr_members. */ + if (pos->core.idx != idx) + idx_changed = true; + pos->core.idx = idx++; + pos->core.nr_members = 0; + + /* + * Set the group leader respecting the given groupings and that + * groups can't span PMUs. + */ + if (!cur_leader) + cur_leader = pos; + + cur_leader_pmu_name = cur_leader->group_pmu_name; + if ((cur_leaders_grp != pos->core.leader && + (!pos_force_grouped || !cur_leader_force_grouped)) || + strcmp(cur_leader_pmu_name, pos_pmu_name)) { + /* Event is for a different group/PMU than last. */ + cur_leader = pos; + /* + * Remember the leader's group before it is overwritten, + * so that later events match as being in the same + * group. + */ + cur_leaders_grp = pos->core.leader; + /* + * Avoid forcing events into groups with events that + * don't need to be in the group. + */ + cur_leader_force_grouped = pos_force_grouped; + } + if (pos_leader != cur_leader) { + /* The leader changed so update it. */ + evsel__set_leader(pos, cur_leader); + } + } + list_for_each_entry(pos, list, core.node) { + struct evsel *pos_leader = evsel__leader(pos); + + if (pos == pos_leader) + num_leaders++; + pos_leader->core.nr_members++; + } + return (idx_changed || num_leaders != orig_num_leaders) ? 1 : 0; +} + +int __parse_events(struct evlist *evlist, const char *str, const char *pmu_filter, + struct parse_events_error *err, struct perf_pmu *fake_pmu, + bool warn_if_reordered) +{ + struct parse_events_state parse_state = { + .list = LIST_HEAD_INIT(parse_state.list), + .idx = evlist->core.nr_entries, + .error = err, + .stoken = PE_START_EVENTS, + .fake_pmu = fake_pmu, + .pmu_filter = pmu_filter, + .match_legacy_cache_terms = true, + }; + int ret, ret2; + + ret = parse_events__scanner(str, /*input=*/ NULL, &parse_state); + + if (!ret && list_empty(&parse_state.list)) { + WARN_ONCE(true, "WARNING: event parser found nothing\n"); + return -1; + } + + ret2 = parse_events__sort_events_and_fix_groups(&parse_state.list); + if (ret2 < 0) + return ret; + + if (ret2 && warn_if_reordered && !parse_state.wild_card_pmus) + pr_warning("WARNING: events were regrouped to match PMUs\n"); + + /* + * Add list to the evlist even with errors to allow callers to clean up. + */ + evlist__splice_list_tail(evlist, &parse_state.list); + + if (!ret) { + struct evsel *last; + + last = evlist__last(evlist); + last->cmdline_group_boundary = true; + + return 0; + } + + /* + * There are 2 users - builtin-record and builtin-test objects. + * Both call evlist__delete in case of error, so we dont + * need to bother. + */ + return ret; +} + +int parse_event(struct evlist *evlist, const char *str) +{ + struct parse_events_error err; + int ret; + + parse_events_error__init(&err); + ret = parse_events(evlist, str, &err); + parse_events_error__exit(&err); + return ret; +} + +void parse_events_error__init(struct parse_events_error *err) +{ + bzero(err, sizeof(*err)); +} + +void parse_events_error__exit(struct parse_events_error *err) +{ + zfree(&err->str); + zfree(&err->help); + zfree(&err->first_str); + zfree(&err->first_help); +} + +void parse_events_error__handle(struct parse_events_error *err, int idx, + char *str, char *help) +{ + if (WARN(!str || !err, "WARNING: failed to provide error string or struct\n")) + goto out_free; + switch (err->num_errors) { + case 0: + err->idx = idx; + err->str = str; + err->help = help; + break; + case 1: + err->first_idx = err->idx; + err->idx = idx; + err->first_str = err->str; + err->str = str; + err->first_help = err->help; + err->help = help; + break; + default: + pr_debug("Multiple errors dropping message: %s (%s)\n", + err->str, err->help ?: "<no help>"); + free(err->str); + err->str = str; + free(err->help); + err->help = help; + break; + } + err->num_errors++; + return; + +out_free: + free(str); + free(help); +} + +#define MAX_WIDTH 1000 +static int get_term_width(void) +{ + struct winsize ws; + + get_term_dimensions(&ws); + return ws.ws_col > MAX_WIDTH ? MAX_WIDTH : ws.ws_col; +} + +static void __parse_events_error__print(int err_idx, const char *err_str, + const char *err_help, const char *event) +{ + const char *str = "invalid or unsupported event: "; + char _buf[MAX_WIDTH]; + char *buf = (char *) event; + int idx = 0; + if (err_str) { + /* -2 for extra '' in the final fprintf */ + int width = get_term_width() - 2; + int len_event = strlen(event); + int len_str, max_len, cut = 0; + + /* + * Maximum error index indent, we will cut + * the event string if it's bigger. + */ + int max_err_idx = 13; + + /* + * Let's be specific with the message when + * we have the precise error. + */ + str = "event syntax error: "; + len_str = strlen(str); + max_len = width - len_str; + + buf = _buf; + + /* We're cutting from the beginning. */ + if (err_idx > max_err_idx) + cut = err_idx - max_err_idx; + + strncpy(buf, event + cut, max_len); + + /* Mark cut parts with '..' on both sides. */ + if (cut) + buf[0] = buf[1] = '.'; + + if ((len_event - cut) > max_len) { + buf[max_len - 1] = buf[max_len - 2] = '.'; + buf[max_len] = 0; + } + + idx = len_str + err_idx - cut; + } + + fprintf(stderr, "%s'%s'\n", str, buf); + if (idx) { + fprintf(stderr, "%*s\\___ %s\n", idx + 1, "", err_str); + if (err_help) + fprintf(stderr, "\n%s\n", err_help); + } +} + +void parse_events_error__print(struct parse_events_error *err, + const char *event) +{ + if (!err->num_errors) + return; + + __parse_events_error__print(err->idx, err->str, err->help, event); + + if (err->num_errors > 1) { + fputs("\nInitial error:\n", stderr); + __parse_events_error__print(err->first_idx, err->first_str, + err->first_help, event); + } +} + +#undef MAX_WIDTH + +int parse_events_option(const struct option *opt, const char *str, + int unset __maybe_unused) +{ + struct parse_events_option_args *args = opt->value; + struct parse_events_error err; + int ret; + + parse_events_error__init(&err); + ret = __parse_events(*args->evlistp, str, args->pmu_filter, &err, + /*fake_pmu=*/NULL, /*warn_if_reordered=*/true); + + if (ret) { + parse_events_error__print(&err, str); + fprintf(stderr, "Run 'perf list' for a list of valid events\n"); + } + parse_events_error__exit(&err); + + return ret; +} + +int parse_events_option_new_evlist(const struct option *opt, const char *str, int unset) +{ + struct parse_events_option_args *args = opt->value; + int ret; + + if (*args->evlistp == NULL) { + *args->evlistp = evlist__new(); + + if (*args->evlistp == NULL) { + fprintf(stderr, "Not enough memory to create evlist\n"); + return -1; + } + } + ret = parse_events_option(opt, str, unset); + if (ret) { + evlist__delete(*args->evlistp); + *args->evlistp = NULL; + } + + return ret; +} + +static int +foreach_evsel_in_last_glob(struct evlist *evlist, + int (*func)(struct evsel *evsel, + const void *arg), + const void *arg) +{ + struct evsel *last = NULL; + int err; + + /* + * Don't return when list_empty, give func a chance to report + * error when it found last == NULL. + * + * So no need to WARN here, let *func do this. + */ + if (evlist->core.nr_entries > 0) + last = evlist__last(evlist); + + do { + err = (*func)(last, arg); + if (err) + return -1; + if (!last) + return 0; + + if (last->core.node.prev == &evlist->core.entries) + return 0; + last = list_entry(last->core.node.prev, struct evsel, core.node); + } while (!last->cmdline_group_boundary); + + return 0; +} + +static int set_filter(struct evsel *evsel, const void *arg) +{ + const char *str = arg; + bool found = false; + int nr_addr_filters = 0; + struct perf_pmu *pmu = NULL; + + if (evsel == NULL) { + fprintf(stderr, + "--filter option should follow a -e tracepoint or HW tracer option\n"); + return -1; + } + + if (evsel->core.attr.type == PERF_TYPE_TRACEPOINT) { + if (evsel__append_tp_filter(evsel, str) < 0) { + fprintf(stderr, + "not enough memory to hold filter string\n"); + return -1; + } + + return 0; + } + + while ((pmu = perf_pmus__scan(pmu)) != NULL) + if (pmu->type == evsel->core.attr.type) { + found = true; + break; + } + + if (found) + perf_pmu__scan_file(pmu, "nr_addr_filters", + "%d", &nr_addr_filters); + + if (!nr_addr_filters) + return perf_bpf_filter__parse(&evsel->bpf_filters, str); + + if (evsel__append_addr_filter(evsel, str) < 0) { + fprintf(stderr, + "not enough memory to hold filter string\n"); + return -1; + } + + return 0; +} + +int parse_filter(const struct option *opt, const char *str, + int unset __maybe_unused) +{ + struct evlist *evlist = *(struct evlist **)opt->value; + + return foreach_evsel_in_last_glob(evlist, set_filter, + (const void *)str); +} + +static int add_exclude_perf_filter(struct evsel *evsel, + const void *arg __maybe_unused) +{ + char new_filter[64]; + + if (evsel == NULL || evsel->core.attr.type != PERF_TYPE_TRACEPOINT) { + fprintf(stderr, + "--exclude-perf option should follow a -e tracepoint option\n"); + return -1; + } + + snprintf(new_filter, sizeof(new_filter), "common_pid != %d", getpid()); + + if (evsel__append_tp_filter(evsel, new_filter) < 0) { + fprintf(stderr, + "not enough memory to hold filter string\n"); + return -1; + } + + return 0; +} + +int exclude_perf(const struct option *opt, + const char *arg __maybe_unused, + int unset __maybe_unused) +{ + struct evlist *evlist = *(struct evlist **)opt->value; + + return foreach_evsel_in_last_glob(evlist, add_exclude_perf_filter, + NULL); +} + +int parse_events__is_hardcoded_term(struct parse_events_term *term) +{ + return term->type_term != PARSE_EVENTS__TERM_TYPE_USER; +} + +static int new_term(struct parse_events_term **_term, + struct parse_events_term *temp, + char *str, u64 num) +{ + struct parse_events_term *term; + + term = malloc(sizeof(*term)); + if (!term) + return -ENOMEM; + + *term = *temp; + INIT_LIST_HEAD(&term->list); + term->weak = false; + + switch (term->type_val) { + case PARSE_EVENTS__TERM_TYPE_NUM: + term->val.num = num; + break; + case PARSE_EVENTS__TERM_TYPE_STR: + term->val.str = str; + break; + default: + free(term); + return -EINVAL; + } + + *_term = term; + return 0; +} + +int parse_events_term__num(struct parse_events_term **term, + enum parse_events__term_type type_term, + const char *config, u64 num, + bool no_value, + void *loc_term_, void *loc_val_) +{ + YYLTYPE *loc_term = loc_term_; + YYLTYPE *loc_val = loc_val_; + + struct parse_events_term temp = { + .type_val = PARSE_EVENTS__TERM_TYPE_NUM, + .type_term = type_term, + .config = config ? : strdup(config_term_name(type_term)), + .no_value = no_value, + .err_term = loc_term ? loc_term->first_column : 0, + .err_val = loc_val ? loc_val->first_column : 0, + }; + + return new_term(term, &temp, /*str=*/NULL, num); +} + +int parse_events_term__str(struct parse_events_term **term, + enum parse_events__term_type type_term, + char *config, char *str, + void *loc_term_, void *loc_val_) +{ + YYLTYPE *loc_term = loc_term_; + YYLTYPE *loc_val = loc_val_; + + struct parse_events_term temp = { + .type_val = PARSE_EVENTS__TERM_TYPE_STR, + .type_term = type_term, + .config = config, + .err_term = loc_term ? loc_term->first_column : 0, + .err_val = loc_val ? loc_val->first_column : 0, + }; + + return new_term(term, &temp, str, /*num=*/0); +} + +int parse_events_term__term(struct parse_events_term **term, + enum parse_events__term_type term_lhs, + enum parse_events__term_type term_rhs, + void *loc_term, void *loc_val) +{ + return parse_events_term__str(term, term_lhs, NULL, + strdup(config_term_name(term_rhs)), + loc_term, loc_val); +} + +int parse_events_term__clone(struct parse_events_term **new, + struct parse_events_term *term) +{ + char *str; + struct parse_events_term temp = *term; + + temp.used = false; + if (term->config) { + temp.config = strdup(term->config); + if (!temp.config) + return -ENOMEM; + } + if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) + return new_term(new, &temp, /*str=*/NULL, term->val.num); + + str = strdup(term->val.str); + if (!str) + return -ENOMEM; + return new_term(new, &temp, str, /*num=*/0); +} + +void parse_events_term__delete(struct parse_events_term *term) +{ + if (term->type_val != PARSE_EVENTS__TERM_TYPE_NUM) + zfree(&term->val.str); + + zfree(&term->config); + free(term); +} + +int parse_events_copy_term_list(struct list_head *old, + struct list_head **new) +{ + struct parse_events_term *term, *n; + int ret; + + if (!old) { + *new = NULL; + return 0; + } + + *new = malloc(sizeof(struct list_head)); + if (!*new) + return -ENOMEM; + INIT_LIST_HEAD(*new); + + list_for_each_entry (term, old, list) { + ret = parse_events_term__clone(&n, term); + if (ret) + return ret; + list_add_tail(&n->list, *new); + } + return 0; +} + +void parse_events_terms__purge(struct list_head *terms) +{ + struct parse_events_term *term, *h; + + list_for_each_entry_safe(term, h, terms, list) { + list_del_init(&term->list); + parse_events_term__delete(term); + } +} + +void parse_events_terms__delete(struct list_head *terms) +{ + if (!terms) + return; + parse_events_terms__purge(terms); + free(terms); +} + +int parse_events_term__to_strbuf(struct list_head *term_list, struct strbuf *sb) +{ + struct parse_events_term *term; + bool first = true; + + if (!term_list) + return 0; + + list_for_each_entry(term, term_list, list) { + int ret; + + if (!first) { + ret = strbuf_addch(sb, ','); + if (ret < 0) + return ret; + } + first = false; + + if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) + if (term->no_value) { + assert(term->val.num == 1); + ret = strbuf_addf(sb, "%s", term->config); + } else + ret = strbuf_addf(sb, "%s=%#"PRIx64, term->config, term->val.num); + else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) { + if (term->config) { + ret = strbuf_addf(sb, "%s=", term->config); + if (ret < 0) + return ret; + } else if ((unsigned int)term->type_term < __PARSE_EVENTS__TERM_TYPE_NR) { + ret = strbuf_addf(sb, "%s=", config_term_name(term->type_term)); + if (ret < 0) + return ret; + } + assert(!term->no_value); + ret = strbuf_addf(sb, "%s", term->val.str); + } + if (ret < 0) + return ret; + } + return 0; +} + +void parse_events_evlist_error(struct parse_events_state *parse_state, + int idx, const char *str) +{ + if (!parse_state->error) + return; + + parse_events_error__handle(parse_state->error, idx, strdup(str), NULL); +} + +static void config_terms_list(char *buf, size_t buf_sz) +{ + int i; + bool first = true; + + buf[0] = '\0'; + for (i = 0; i < __PARSE_EVENTS__TERM_TYPE_NR; i++) { + const char *name = config_term_name(i); + + if (!config_term_avail(i, NULL)) + continue; + if (!name) + continue; + if (name[0] == '<') + continue; + + if (strlen(buf) + strlen(name) + 2 >= buf_sz) + return; + + if (!first) + strcat(buf, ","); + else + first = false; + strcat(buf, name); + } +} + +/* + * Return string contains valid config terms of an event. + * @additional_terms: For terms such as PMU sysfs terms. + */ +char *parse_events_formats_error_string(char *additional_terms) +{ + char *str; + /* "no-overwrite" is the longest name */ + char static_terms[__PARSE_EVENTS__TERM_TYPE_NR * + (sizeof("no-overwrite") - 1)]; + + config_terms_list(static_terms, sizeof(static_terms)); + /* valid terms */ + if (additional_terms) { + if (asprintf(&str, "valid terms: %s,%s", + additional_terms, static_terms) < 0) + goto fail; + } else { + if (asprintf(&str, "valid terms: %s", static_terms) < 0) + goto fail; + } + return str; + +fail: + return NULL; +} |