90e2b22dee
We want to reuse the event grammar for parsing aliased terms. The obvious reason is we dont need to add new code when there's already support for this in event grammar. Doing this by adding terms and event start entries into event parse grammar. The grammar forks on the begining based on the starting token, which is supplied via bison interface into the lexer. The lexer then returns the starting token as the first token, thus making the grammar switch accordingly. Currently 2 starting tokens/grammars are supported: PE_START_TERMS, PE_START_EVENTS The PE_START_TERMS related grammar uses 'event_config' part of the grammar for term parsing. Signed-off-by: Jiri Olsa <jolsa@redhat.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1339741902-8449-12-git-send-email-zheng.z.yan@intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
307 lines
5.9 KiB
Text
307 lines
5.9 KiB
Text
%pure-parser
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%name-prefix "parse_events_"
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%parse-param {void *_data}
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%parse-param {void *scanner}
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%lex-param {void* scanner}
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%{
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#define YYDEBUG 1
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#include <linux/compiler.h>
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#include <linux/list.h>
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#include "types.h"
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#include "util.h"
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#include "parse-events.h"
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#include "parse-events-bison.h"
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extern int parse_events_lex (YYSTYPE* lvalp, void* scanner);
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#define ABORT_ON(val) \
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do { \
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if (val) \
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YYABORT; \
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} while (0)
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%}
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%token PE_START_EVENTS PE_START_TERMS
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%token PE_VALUE PE_VALUE_SYM PE_RAW PE_TERM
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%token PE_NAME
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%token PE_MODIFIER_EVENT PE_MODIFIER_BP
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%token PE_NAME_CACHE_TYPE PE_NAME_CACHE_OP_RESULT
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%token PE_PREFIX_MEM PE_PREFIX_RAW
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%token PE_ERROR
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%type <num> PE_VALUE
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%type <num> PE_VALUE_SYM
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%type <num> PE_RAW
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%type <num> PE_TERM
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%type <str> PE_NAME
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%type <str> PE_NAME_CACHE_TYPE
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%type <str> PE_NAME_CACHE_OP_RESULT
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%type <str> PE_MODIFIER_EVENT
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%type <str> PE_MODIFIER_BP
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%type <head> event_config
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%type <term> event_term
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%type <head> event_pmu
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%type <head> event_legacy_symbol
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%type <head> event_legacy_cache
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%type <head> event_legacy_mem
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%type <head> event_legacy_tracepoint
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%type <head> event_legacy_numeric
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%type <head> event_legacy_raw
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%type <head> event_def
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%union
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{
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char *str;
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unsigned long num;
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struct list_head *head;
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struct parse_events__term *term;
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}
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%%
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start:
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PE_START_EVENTS events
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PE_START_TERMS terms
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events:
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events ',' event | event
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event:
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event_def PE_MODIFIER_EVENT
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{
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struct parse_events_data__events *data = _data;
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/*
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* Apply modifier on all events added by single event definition
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* (there could be more events added for multiple tracepoint
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* definitions via '*?'.
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*/
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ABORT_ON(parse_events_modifier($1, $2));
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parse_events_update_lists($1, &data->list);
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}
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event_def
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{
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struct parse_events_data__events *data = _data;
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parse_events_update_lists($1, &data->list);
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}
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event_def: event_pmu |
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event_legacy_symbol |
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event_legacy_cache sep_dc |
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event_legacy_mem |
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event_legacy_tracepoint sep_dc |
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event_legacy_numeric sep_dc |
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event_legacy_raw sep_dc
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event_pmu:
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PE_NAME '/' event_config '/'
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{
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struct parse_events_data__events *data = _data;
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struct list_head *list = NULL;
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ABORT_ON(parse_events_add_pmu(&list, &data->idx, $1, $3));
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parse_events__free_terms($3);
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$$ = list;
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}
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event_legacy_symbol:
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PE_VALUE_SYM '/' event_config '/'
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{
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struct parse_events_data__events *data = _data;
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struct list_head *list = NULL;
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int type = $1 >> 16;
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int config = $1 & 255;
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ABORT_ON(parse_events_add_numeric(&list, &data->idx,
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type, config, $3));
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parse_events__free_terms($3);
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$$ = list;
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}
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PE_VALUE_SYM sep_slash_dc
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{
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struct parse_events_data__events *data = _data;
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struct list_head *list = NULL;
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int type = $1 >> 16;
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int config = $1 & 255;
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ABORT_ON(parse_events_add_numeric(&list, &data->idx,
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type, config, NULL));
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$$ = list;
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}
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event_legacy_cache:
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PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT '-' PE_NAME_CACHE_OP_RESULT
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{
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struct parse_events_data__events *data = _data;
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struct list_head *list = NULL;
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ABORT_ON(parse_events_add_cache(&list, &data->idx, $1, $3, $5));
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$$ = list;
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}
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PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT
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{
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struct parse_events_data__events *data = _data;
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struct list_head *list = NULL;
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ABORT_ON(parse_events_add_cache(&list, &data->idx, $1, $3, NULL));
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$$ = list;
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}
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PE_NAME_CACHE_TYPE
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{
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struct parse_events_data__events *data = _data;
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struct list_head *list = NULL;
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ABORT_ON(parse_events_add_cache(&list, &data->idx, $1, NULL, NULL));
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$$ = list;
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}
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event_legacy_mem:
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PE_PREFIX_MEM PE_VALUE ':' PE_MODIFIER_BP sep_dc
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{
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struct parse_events_data__events *data = _data;
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struct list_head *list = NULL;
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ABORT_ON(parse_events_add_breakpoint(&list, &data->idx,
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(void *) $2, $4));
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$$ = list;
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}
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PE_PREFIX_MEM PE_VALUE sep_dc
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{
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struct parse_events_data__events *data = _data;
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struct list_head *list = NULL;
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ABORT_ON(parse_events_add_breakpoint(&list, &data->idx,
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(void *) $2, NULL));
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$$ = list;
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}
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event_legacy_tracepoint:
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PE_NAME ':' PE_NAME
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{
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struct parse_events_data__events *data = _data;
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struct list_head *list = NULL;
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ABORT_ON(parse_events_add_tracepoint(&list, &data->idx, $1, $3));
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$$ = list;
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}
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event_legacy_numeric:
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PE_VALUE ':' PE_VALUE
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{
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struct parse_events_data__events *data = _data;
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struct list_head *list = NULL;
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ABORT_ON(parse_events_add_numeric(&list, &data->idx, $1, $3, NULL));
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$$ = list;
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}
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event_legacy_raw:
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PE_RAW
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{
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struct parse_events_data__events *data = _data;
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struct list_head *list = NULL;
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ABORT_ON(parse_events_add_numeric(&list, &data->idx,
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PERF_TYPE_RAW, $1, NULL));
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$$ = list;
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}
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terms: event_config
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{
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struct parse_events_data__terms *data = _data;
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data->terms = $1;
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}
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event_config:
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event_config ',' event_term
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{
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struct list_head *head = $1;
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struct parse_events__term *term = $3;
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ABORT_ON(!head);
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list_add_tail(&term->list, head);
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$$ = $1;
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}
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event_term
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{
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struct list_head *head = malloc(sizeof(*head));
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struct parse_events__term *term = $1;
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ABORT_ON(!head);
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INIT_LIST_HEAD(head);
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list_add_tail(&term->list, head);
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$$ = head;
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}
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event_term:
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PE_NAME '=' PE_NAME
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{
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struct parse_events__term *term;
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ABORT_ON(parse_events__term_str(&term, PARSE_EVENTS__TERM_TYPE_USER,
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$1, $3));
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$$ = term;
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}
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PE_NAME '=' PE_VALUE
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{
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struct parse_events__term *term;
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ABORT_ON(parse_events__term_num(&term, PARSE_EVENTS__TERM_TYPE_USER,
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$1, $3));
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$$ = term;
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}
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PE_NAME
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{
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struct parse_events__term *term;
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ABORT_ON(parse_events__term_num(&term, PARSE_EVENTS__TERM_TYPE_USER,
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$1, 1));
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$$ = term;
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}
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PE_TERM '=' PE_NAME
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{
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struct parse_events__term *term;
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ABORT_ON(parse_events__term_str(&term, $1, NULL, $3));
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$$ = term;
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}
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PE_TERM '=' PE_VALUE
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{
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struct parse_events__term *term;
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ABORT_ON(parse_events__term_num(&term, $1, NULL, $3));
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$$ = term;
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}
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PE_TERM
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{
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struct parse_events__term *term;
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ABORT_ON(parse_events__term_num(&term, $1, NULL, 1));
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$$ = term;
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}
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sep_dc: ':' |
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sep_slash_dc: '/' | ':' |
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%%
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void parse_events_error(void *data __used, void *scanner __used,
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char const *msg __used)
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{
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}
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