tools/perf/util/parse-events.y - linux - Git at Google

 %pure-parser
 %parse-param {void *_parse_state}
 %parse-param {void *scanner}
 %lex-param {void* scanner}
 %locations

 %{

 #define YYDEBUG 1

 #include <fnmatch.h>
 #include <linux/compiler.h>
 #include <linux/list.h>
 #include <linux/types.h>
 #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 *parse_state, 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 *parse_state)
 {
 	/* Count groups only have more than 1 members */
 	if (!list_is_last(list->next, list))
 		parse_state->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 <num> PE_VALUE
 %type <num> PE_VALUE_SYM_HW
 %type <num> PE_VALUE_SYM_SW
 %type <num> PE_RAW
 %type <num> PE_TERM
 %type <str> PE_NAME
 %type <str> PE_BPF_OBJECT
 %type <str> PE_BPF_SOURCE
 %type <str> PE_NAME_CACHE_TYPE
 %type <str> PE_NAME_CACHE_OP_RESULT
 %type <str> PE_MODIFIER_EVENT
 %type <str> PE_MODIFIER_BP
 %type <str> PE_EVENT_NAME
 %type <str> PE_PMU_EVENT_PRE PE_PMU_EVENT_SUF PE_KERNEL_PMU_EVENT
 %type <str> PE_DRV_CFG_TERM
 %type <num> value_sym
 %type <head> event_config
 %type <head> opt_event_config
 %type <term> event_term
 %type <head> event_pmu
 %type <head> event_legacy_symbol
 %type <head> event_legacy_cache
 %type <head> event_legacy_mem
 %type <head> event_legacy_tracepoint
 %type <tracepoint_name> tracepoint_name
 %type <head> event_legacy_numeric
 %type <head> event_legacy_raw
 %type <head> event_bpf_file
 %type <head> event_def
 %type <head> event_mod
 %type <head> event_name
 %type <head> event
 %type <head> events
 %type <head> group_def
 %type <head> group
 %type <head> groups
 %type <array> array
 %type <array> array_term
 %type <array> 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 *parse_state = _parse_state;

 	parse_events_update_lists($1, &parse_state->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, _parse_state);
 	parse_events__set_leader($1, list, _parse_state);
 	$$ = list;
 }
 |
 '{' events '}'
 {
 	struct list_head *list = $2;

 	inc_group_count(list, _parse_state);
 	parse_events__set_leader(NULL, list, _parse_state);
 	$$ = 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(_parse_state, list, $1, $2, false, false)) {
 		struct perf_pmu *pmu = NULL;
 		int ok = 0;
 		char *pattern;

 		if (asprintf(&pattern, "%s*", $1) < 0)
 			YYABORT;

 		while ((pmu = perf_pmu__scan(pmu)) != NULL) {
 			char *name = pmu->name;

 			if (!strncmp(name, "uncore_", 7) &&
 			    strncmp($1, "uncore_", 7))
 				name += 7;
 			if (!fnmatch(pattern, name, 0)) {
 				if (parse_events_copy_term_list(orig_terms, &terms)) {
 					free(pattern);
 					YYABORT;
 				}
 				if (!parse_events_add_pmu(_parse_state, list, pmu->name, terms, true, false))
 					ok++;
 				parse_events_terms__delete(terms);
 			}
 		}

 		free(pattern);

 		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(_parse_state, $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(_parse_state, 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(_parse_state, 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(_parse_state, 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 *parse_state = _parse_state;
 	struct parse_events_error *error = parse_state->error;
 	struct list_head *list;

 	ALLOC_LIST(list);
 	ABORT_ON(parse_events_add_cache(list, &parse_state->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 *parse_state = _parse_state;
 	struct parse_events_error *error = parse_state->error;
 	struct list_head *list;

 	ALLOC_LIST(list);
 	ABORT_ON(parse_events_add_cache(list, &parse_state->idx, $1, $3, NULL, error, $4));
 	parse_events_terms__delete($4);
 	$$ = list;
 }
 |
 PE_NAME_CACHE_TYPE opt_event_config
 {
 	struct parse_events_state *parse_state = _parse_state;
 	struct parse_events_error *error = parse_state->error;
 	struct list_head *list;

 	ALLOC_LIST(list);
 	ABORT_ON(parse_events_add_cache(list, &parse_state->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 *parse_state = _parse_state;
 	struct list_head *list;

 	ALLOC_LIST(list);
 	ABORT_ON(parse_events_add_breakpoint(list, &parse_state->idx,
 					     (void *) $2, $6, $4));
 	$$ = list;
 }
 |
 PE_PREFIX_MEM PE_VALUE '/' PE_VALUE sep_dc
 {
 	struct parse_events_state *parse_state = _parse_state;
 	struct list_head *list;

 	ALLOC_LIST(list);
 	ABORT_ON(parse_events_add_breakpoint(list, &parse_state->idx,
 					     (void *) $2, NULL, $4));
 	$$ = list;
 }
 |
 PE_PREFIX_MEM PE_VALUE ':' PE_MODIFIER_BP sep_dc
 {
 	struct parse_events_state *parse_state = _parse_state;
 	struct list_head *list;

 	ALLOC_LIST(list);
 	ABORT_ON(parse_events_add_breakpoint(list, &parse_state->idx,
 					     (void *) $2, $4, 0));
 	$$ = list;
 }
 |
 PE_PREFIX_MEM PE_VALUE sep_dc
 {
 	struct parse_events_state *parse_state = _parse_state;
 	struct list_head *list;

 	ALLOC_LIST(list);
 	ABORT_ON(parse_events_add_breakpoint(list, &parse_state->idx,
 					     (void *) $2, NULL, 0));
 	$$ = list;
 }

 event_legacy_tracepoint:
 tracepoint_name opt_event_config
 {
 	struct parse_events_state *parse_state = _parse_state;
 	struct parse_events_error *error = parse_state->error;
 	struct list_head *list;

 	ALLOC_LIST(list);
 	if (error)
 		error->idx = @1.first_column;

 	if (parse_events_add_tracepoint(list, &parse_state->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(_parse_state, 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(_parse_state, 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 *parse_state = _parse_state;
 	struct parse_events_error *error = parse_state->error;
 	struct list_head *list;

 	ALLOC_LIST(list);
 	ABORT_ON(parse_events_load_bpf(parse_state, 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(_parse_state, 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 *parse_state = _parse_state;
 	parse_state->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 *parse_state,
 			void *scanner __maybe_unused,
 			char const *msg __maybe_unused)
 {
 	parse_events_evlist_error(parse_state, loc->last_column, "parser error");
 }
	%pure-parser
	%parse-param {void *_parse_state}
	%parse-param {void *scanner}
	%lex-param {void* scanner}
	%locations

	%{

	#define YYDEBUG 1

	#include <fnmatch.h>
	#include <linux/compiler.h>
	#include <linux/list.h>
	#include <linux/types.h>
	#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 parse_state, 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 *parse_state)
	{
	/* Count groups only have more than 1 members */
	if (!list_is_last(list->next, list))
	parse_state->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 <num> PE_VALUE
	%type <num> PE_VALUE_SYM_HW
	%type <num> PE_VALUE_SYM_SW
	%type <num> PE_RAW
	%type <num> PE_TERM
	%type <str> PE_NAME
	%type <str> PE_BPF_OBJECT
	%type <str> PE_BPF_SOURCE
	%type <str> PE_NAME_CACHE_TYPE
	%type <str> PE_NAME_CACHE_OP_RESULT
	%type <str> PE_MODIFIER_EVENT
	%type <str> PE_MODIFIER_BP
	%type <str> PE_EVENT_NAME
	%type <str> PE_PMU_EVENT_PRE PE_PMU_EVENT_SUF PE_KERNEL_PMU_EVENT
	%type <str> PE_DRV_CFG_TERM
	%type <num> value_sym
	%type <head> event_config
	%type <head> opt_event_config
	%type <term> event_term
	%type <head> event_pmu
	%type <head> event_legacy_symbol
	%type <head> event_legacy_cache
	%type <head> event_legacy_mem
	%type <head> event_legacy_tracepoint
	%type <tracepoint_name> tracepoint_name
	%type <head> event_legacy_numeric
	%type <head> event_legacy_raw
	%type <head> event_bpf_file
	%type <head> event_def
	%type <head> event_mod
	%type <head> event_name
	%type <head> event
	%type <head> events
	%type <head> group_def
	%type <head> group
	%type <head> groups
	%type <array> array
	%type <array> array_term
	%type <array> 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 *parse_state = _parse_state;

	parse_events_update_lists($1, &parse_state->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, _parse_state);
	parse_events__set_leader($1, list, _parse_state);
	$$ = list;
	}
	\|
	'{' events '}'
	{
	struct list_head *list = $2;

	inc_group_count(list, _parse_state);
	parse_events__set_leader(NULL, list, _parse_state);
	$$ = 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(_parse_state, list, $1, $2, false, false)) {
	struct perf_pmu *pmu = NULL;
	int ok = 0;
	char *pattern;

	if (asprintf(&pattern, "%s*", $1) < 0)
	YYABORT;

	while ((pmu = perf_pmu__scan(pmu)) != NULL) {
	char *name = pmu->name;

	if (!strncmp(name, "uncore_", 7) &&
	strncmp($1, "uncore_", 7))
	name += 7;
	if (!fnmatch(pattern, name, 0)) {
	if (parse_events_copy_term_list(orig_terms, &terms)) {
	free(pattern);
	YYABORT;
	}
	if (!parse_events_add_pmu(_parse_state, list, pmu->name, terms, true, false))
	ok++;
	parse_events_terms__delete(terms);
	}
	}

	free(pattern);

	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(_parse_state, $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(_parse_state, 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(_parse_state, 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(_parse_state, 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 *parse_state = _parse_state;
	struct parse_events_error *error = parse_state->error;
	struct list_head *list;

	ALLOC_LIST(list);
	ABORT_ON(parse_events_add_cache(list, &parse_state->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 *parse_state = _parse_state;
	struct parse_events_error *error = parse_state->error;
	struct list_head *list;

	ALLOC_LIST(list);
	ABORT_ON(parse_events_add_cache(list, &parse_state->idx, $1, $3, NULL, error, $4));
	parse_events_terms__delete($4);
	$$ = list;
	}
	\|
	PE_NAME_CACHE_TYPE opt_event_config
	{
	struct parse_events_state *parse_state = _parse_state;
	struct parse_events_error *error = parse_state->error;
	struct list_head *list;

	ALLOC_LIST(list);
	ABORT_ON(parse_events_add_cache(list, &parse_state->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 *parse_state = _parse_state;
	struct list_head *list;

	ALLOC_LIST(list);
	ABORT_ON(parse_events_add_breakpoint(list, &parse_state->idx,
	(void *) $2, $6, $4));
	$$ = list;
	}
	\|
	PE_PREFIX_MEM PE_VALUE '/' PE_VALUE sep_dc
	{
	struct parse_events_state *parse_state = _parse_state;
	struct list_head *list;

	ALLOC_LIST(list);
	ABORT_ON(parse_events_add_breakpoint(list, &parse_state->idx,
	(void *) $2, NULL, $4));
	$$ = list;
	}
	\|
	PE_PREFIX_MEM PE_VALUE ':' PE_MODIFIER_BP sep_dc
	{
	struct parse_events_state *parse_state = _parse_state;
	struct list_head *list;

	ALLOC_LIST(list);
	ABORT_ON(parse_events_add_breakpoint(list, &parse_state->idx,
	(void *) $2, $4, 0));
	$$ = list;
	}
	\|
	PE_PREFIX_MEM PE_VALUE sep_dc
	{
	struct parse_events_state *parse_state = _parse_state;
	struct list_head *list;

	ALLOC_LIST(list);
	ABORT_ON(parse_events_add_breakpoint(list, &parse_state->idx,
	(void *) $2, NULL, 0));
	$$ = list;
	}

	event_legacy_tracepoint:
	tracepoint_name opt_event_config
	{
	struct parse_events_state *parse_state = _parse_state;
	struct parse_events_error *error = parse_state->error;
	struct list_head *list;

	ALLOC_LIST(list);
	if (error)
	error->idx = @1.first_column;

	if (parse_events_add_tracepoint(list, &parse_state->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(_parse_state, 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(_parse_state, 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 *parse_state = _parse_state;
	struct parse_events_error *error = parse_state->error;
	struct list_head *list;

	ALLOC_LIST(list);
	ABORT_ON(parse_events_load_bpf(parse_state, 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(_parse_state, 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 *parse_state = _parse_state;
	parse_state->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 parse_state,
	void *scanner __maybe_unused,
	char const *msg __maybe_unused)
	{
	parse_events_evlist_error(parse_state, loc->last_column, "parser error");
	}