%pure-parser %parse-param {void *_data} %parse-param {void *scanner} %lex-param {void* scanner} %locations %{ #define YYDEBUG 1 #include #include #include #include "util.h" #include "pmu.h" #include "debug.h" #include "parse-events.h" #include "parse-events-bison.h" void parse_events_error(YYLTYPE *loc, void *data, void *scanner, char const *msg); #define ABORT_ON(val) \ do { \ if (val) \ YYABORT; \ } while (0) #define ALLOC_LIST(list) \ do { \ list = malloc(sizeof(*list)); \ ABORT_ON(!list); \ INIT_LIST_HEAD(list); \ } while (0) static void inc_group_count(struct list_head *list, struct parse_events_state *data) { /* Count groups only have more than 1 members */ if (!list_is_last(list->next, list)) data->nr_groups++; } %} %token PE_START_EVENTS PE_START_TERMS %token PE_VALUE PE_VALUE_SYM_HW PE_VALUE_SYM_SW PE_RAW PE_TERM %token PE_EVENT_NAME %token PE_NAME %token PE_BPF_OBJECT PE_BPF_SOURCE %token PE_MODIFIER_EVENT PE_MODIFIER_BP %token PE_NAME_CACHE_TYPE PE_NAME_CACHE_OP_RESULT %token PE_PREFIX_MEM PE_PREFIX_RAW PE_PREFIX_GROUP %token PE_ERROR %token PE_PMU_EVENT_PRE PE_PMU_EVENT_SUF PE_KERNEL_PMU_EVENT %token PE_ARRAY_ALL PE_ARRAY_RANGE %token PE_DRV_CFG_TERM %type PE_VALUE %type PE_VALUE_SYM_HW %type PE_VALUE_SYM_SW %type PE_RAW %type PE_TERM %type PE_NAME %type PE_BPF_OBJECT %type PE_BPF_SOURCE %type PE_NAME_CACHE_TYPE %type PE_NAME_CACHE_OP_RESULT %type PE_MODIFIER_EVENT %type PE_MODIFIER_BP %type PE_EVENT_NAME %type PE_PMU_EVENT_PRE PE_PMU_EVENT_SUF PE_KERNEL_PMU_EVENT %type PE_DRV_CFG_TERM %type value_sym %type event_config %type opt_event_config %type event_term %type event_pmu %type event_legacy_symbol %type event_legacy_cache %type event_legacy_mem %type event_legacy_tracepoint %type tracepoint_name %type event_legacy_numeric %type event_legacy_raw %type event_bpf_file %type event_def %type event_mod %type event_name %type event %type events %type group_def %type group %type groups %type array %type array_term %type array_terms %union { char *str; u64 num; struct list_head *head; struct parse_events_term *term; struct tracepoint_name { char *sys; char *event; } tracepoint_name; struct parse_events_array array; } %% start: PE_START_EVENTS start_events | PE_START_TERMS start_terms start_events: groups { struct parse_events_state *data = _data; parse_events_update_lists($1, &data->list); } groups: groups ',' group { struct list_head *list = $1; struct list_head *group = $3; parse_events_update_lists(group, list); $$ = list; } | groups ',' event { struct list_head *list = $1; struct list_head *event = $3; parse_events_update_lists(event, list); $$ = list; } | group | event group: group_def ':' PE_MODIFIER_EVENT { struct list_head *list = $1; ABORT_ON(parse_events__modifier_group(list, $3)); $$ = list; } | group_def group_def: PE_NAME '{' events '}' { struct list_head *list = $3; inc_group_count(list, _data); parse_events__set_leader($1, list); $$ = list; } | '{' events '}' { struct list_head *list = $2; inc_group_count(list, _data); parse_events__set_leader(NULL, list); $$ = list; } events: events ',' event { struct list_head *event = $3; struct list_head *list = $1; parse_events_update_lists(event, list); $$ = list; } | event event: event_mod event_mod: event_name PE_MODIFIER_EVENT { struct list_head *list = $1; /* * Apply modifier on all events added by single event definition * (there could be more events added for multiple tracepoint * definitions via '*?'. */ ABORT_ON(parse_events__modifier_event(list, $2, false)); $$ = list; } | event_name event_name: PE_EVENT_NAME event_def { ABORT_ON(parse_events_name($2, $1)); free($1); $$ = $2; } | event_def event_def: event_pmu | event_legacy_symbol | event_legacy_cache sep_dc | event_legacy_mem | event_legacy_tracepoint sep_dc | event_legacy_numeric sep_dc | event_legacy_raw sep_dc | event_bpf_file event_pmu: PE_NAME opt_event_config { struct list_head *list, *orig_terms, *terms; if (parse_events_copy_term_list($2, &orig_terms)) YYABORT; ALLOC_LIST(list); if (parse_events_add_pmu(_data, list, $1, $2)) { struct perf_pmu *pmu = NULL; int ok = 0; while ((pmu = perf_pmu__scan(pmu)) != NULL) { char *name = pmu->name; if (!strncmp(name, "uncore_", 7) && strncmp($1, "uncore_", 7)) name += 7; if (!strncmp($1, name, strlen($1))) { if (parse_events_copy_term_list(orig_terms, &terms)) YYABORT; if (!parse_events_add_pmu(_data, list, pmu->name, terms)) ok++; parse_events_terms__delete(terms); } } if (!ok) YYABORT; } parse_events_terms__delete($2); parse_events_terms__delete(orig_terms); $$ = list; } | PE_KERNEL_PMU_EVENT sep_dc { struct list_head *list; if (parse_events_multi_pmu_add(_data, $1, &list) < 0) YYABORT; $$ = list; } | PE_PMU_EVENT_PRE '-' PE_PMU_EVENT_SUF sep_dc { struct list_head *list; char pmu_name[128]; snprintf(&pmu_name, 128, "%s-%s", $1, $3); if (parse_events_multi_pmu_add(_data, pmu_name, &list) < 0) YYABORT; $$ = list; } value_sym: PE_VALUE_SYM_HW | PE_VALUE_SYM_SW event_legacy_symbol: value_sym '/' event_config '/' { struct list_head *list; int type = $1 >> 16; int config = $1 & 255; ALLOC_LIST(list); ABORT_ON(parse_events_add_numeric(_data, list, type, config, $3)); parse_events_terms__delete($3); $$ = list; } | value_sym sep_slash_dc { struct list_head *list; int type = $1 >> 16; int config = $1 & 255; ALLOC_LIST(list); ABORT_ON(parse_events_add_numeric(_data, list, type, config, NULL)); $$ = list; } event_legacy_cache: PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT '-' PE_NAME_CACHE_OP_RESULT opt_event_config { struct parse_events_state *data = _data; struct parse_events_error *error = data->error; struct list_head *list; ALLOC_LIST(list); ABORT_ON(parse_events_add_cache(list, &data->idx, $1, $3, $5, error, $6)); parse_events_terms__delete($6); $$ = list; } | PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT opt_event_config { struct parse_events_state *data = _data; struct parse_events_error *error = data->error; struct list_head *list; ALLOC_LIST(list); ABORT_ON(parse_events_add_cache(list, &data->idx, $1, $3, NULL, error, $4)); parse_events_terms__delete($4); $$ = list; } | PE_NAME_CACHE_TYPE opt_event_config { struct parse_events_state *data = _data; struct parse_events_error *error = data->error; struct list_head *list; ALLOC_LIST(list); ABORT_ON(parse_events_add_cache(list, &data->idx, $1, NULL, NULL, error, $2)); parse_events_terms__delete($2); $$ = list; } event_legacy_mem: PE_PREFIX_MEM PE_VALUE '/' PE_VALUE ':' PE_MODIFIER_BP sep_dc { struct parse_events_state *data = _data; struct list_head *list; ALLOC_LIST(list); ABORT_ON(parse_events_add_breakpoint(list, &data->idx, (void *) $2, $6, $4)); $$ = list; } | PE_PREFIX_MEM PE_VALUE '/' PE_VALUE sep_dc { struct parse_events_state *data = _data; struct list_head *list; ALLOC_LIST(list); ABORT_ON(parse_events_add_breakpoint(list, &data->idx, (void *) $2, NULL, $4)); $$ = list; } | PE_PREFIX_MEM PE_VALUE ':' PE_MODIFIER_BP sep_dc { struct parse_events_state *data = _data; struct list_head *list; ALLOC_LIST(list); ABORT_ON(parse_events_add_breakpoint(list, &data->idx, (void *) $2, $4, 0)); $$ = list; } | PE_PREFIX_MEM PE_VALUE sep_dc { struct parse_events_state *data = _data; struct list_head *list; ALLOC_LIST(list); ABORT_ON(parse_events_add_breakpoint(list, &data->idx, (void *) $2, NULL, 0)); $$ = list; } event_legacy_tracepoint: tracepoint_name opt_event_config { struct parse_events_state *data = _data; struct parse_events_error *error = data->error; struct list_head *list; ALLOC_LIST(list); if (error) error->idx = @1.first_column; if (parse_events_add_tracepoint(list, &data->idx, $1.sys, $1.event, error, $2)) return -1; $$ = list; } tracepoint_name: PE_NAME '-' PE_NAME ':' PE_NAME { char sys_name[128]; struct tracepoint_name tracepoint; snprintf(&sys_name, 128, "%s-%s", $1, $3); tracepoint.sys = &sys_name; tracepoint.event = $5; $$ = tracepoint; } | PE_NAME ':' PE_NAME { struct tracepoint_name tracepoint = {$1, $3}; $$ = tracepoint; } event_legacy_numeric: PE_VALUE ':' PE_VALUE opt_event_config { struct list_head *list; ALLOC_LIST(list); ABORT_ON(parse_events_add_numeric(_data, list, (u32)$1, $3, $4)); parse_events_terms__delete($4); $$ = list; } event_legacy_raw: PE_RAW opt_event_config { struct list_head *list; ALLOC_LIST(list); ABORT_ON(parse_events_add_numeric(_data, list, PERF_TYPE_RAW, $1, $2)); parse_events_terms__delete($2); $$ = list; } event_bpf_file: PE_BPF_OBJECT opt_event_config { struct parse_events_state *data = _data; struct parse_events_error *error = data->error; struct list_head *list; ALLOC_LIST(list); ABORT_ON(parse_events_load_bpf(data, list, $1, false, $2)); parse_events_terms__delete($2); $$ = list; } | PE_BPF_SOURCE opt_event_config { struct list_head *list; ALLOC_LIST(list); ABORT_ON(parse_events_load_bpf(_data, list, $1, true, $2)); parse_events_terms__delete($2); $$ = list; } opt_event_config: '/' event_config '/' { $$ = $2; } | '/' '/' { $$ = NULL; } | { $$ = NULL; } start_terms: event_config { struct parse_events_state *data = _data; data->terms = $1; } event_config: event_config ',' event_term { struct list_head *head = $1; struct parse_events_term *term = $3; ABORT_ON(!head); list_add_tail(&term->list, head); $$ = $1; } | event_term { struct list_head *head = malloc(sizeof(*head)); struct parse_events_term *term = $1; ABORT_ON(!head); INIT_LIST_HEAD(head); list_add_tail(&term->list, head); $$ = head; } event_term: PE_NAME '=' PE_NAME { struct parse_events_term *term; ABORT_ON(parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_USER, $1, $3, &@1, &@3)); $$ = term; } | PE_NAME '=' PE_VALUE { struct parse_events_term *term; ABORT_ON(parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER, $1, $3, false, &@1, &@3)); $$ = term; } | PE_NAME '=' PE_VALUE_SYM_HW { struct parse_events_term *term; int config = $3 & 255; ABORT_ON(parse_events_term__sym_hw(&term, $1, config)); $$ = term; } | PE_NAME { struct parse_events_term *term; ABORT_ON(parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER, $1, 1, true, &@1, NULL)); $$ = term; } | PE_VALUE_SYM_HW { struct parse_events_term *term; int config = $1 & 255; ABORT_ON(parse_events_term__sym_hw(&term, NULL, config)); $$ = term; } | PE_TERM '=' PE_NAME { struct parse_events_term *term; ABORT_ON(parse_events_term__str(&term, (int)$1, NULL, $3, &@1, &@3)); $$ = term; } | PE_TERM '=' PE_VALUE { struct parse_events_term *term; ABORT_ON(parse_events_term__num(&term, (int)$1, NULL, $3, false, &@1, &@3)); $$ = term; } | PE_TERM { struct parse_events_term *term; ABORT_ON(parse_events_term__num(&term, (int)$1, NULL, 1, true, &@1, NULL)); $$ = term; } | PE_NAME array '=' PE_NAME { struct parse_events_term *term; int i; ABORT_ON(parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_USER, $1, $4, &@1, &@4)); term->array = $2; $$ = term; } | PE_NAME array '=' PE_VALUE { struct parse_events_term *term; ABORT_ON(parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER, $1, $4, false, &@1, &@4)); term->array = $2; $$ = term; } | PE_DRV_CFG_TERM { struct parse_events_term *term; ABORT_ON(parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_DRV_CFG, $1, $1, &@1, NULL)); $$ = term; } array: '[' array_terms ']' { $$ = $2; } | PE_ARRAY_ALL { $$.nr_ranges = 0; $$.ranges = NULL; } array_terms: array_terms ',' array_term { struct parse_events_array new_array; new_array.nr_ranges = $1.nr_ranges + $3.nr_ranges; new_array.ranges = malloc(sizeof(new_array.ranges[0]) * new_array.nr_ranges); ABORT_ON(!new_array.ranges); memcpy(&new_array.ranges[0], $1.ranges, $1.nr_ranges * sizeof(new_array.ranges[0])); memcpy(&new_array.ranges[$1.nr_ranges], $3.ranges, $3.nr_ranges * sizeof(new_array.ranges[0])); free($1.ranges); free($3.ranges); $$ = new_array; } | array_term array_term: PE_VALUE { struct parse_events_array array; array.nr_ranges = 1; array.ranges = malloc(sizeof(array.ranges[0])); ABORT_ON(!array.ranges); array.ranges[0].start = $1; array.ranges[0].length = 1; $$ = array; } | PE_VALUE PE_ARRAY_RANGE PE_VALUE { struct parse_events_array array; ABORT_ON($3 < $1); array.nr_ranges = 1; array.ranges = malloc(sizeof(array.ranges[0])); ABORT_ON(!array.ranges); array.ranges[0].start = $1; array.ranges[0].length = $3 - $1 + 1; $$ = array; } sep_dc: ':' | sep_slash_dc: '/' | ':' | %% void parse_events_error(YYLTYPE *loc, void *data, void *scanner __maybe_unused, char const *msg __maybe_unused) { parse_events_evlist_error(data, loc->last_column, "parser error"); }