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ad96227349
This enables a PMU event to be specified in the form: pmu// which is effectively the same as: pmu/config=0/ This patch is a precursor to defining default config for a PMU. Further explanation extracted from lkml thread: Imagine that the 'tsc' term did not exist. Intel PT trace data would not contain TSC packets, and the decoder would not know how to decode them. Then imagine that a new version of the hardware adds 'tsc'. It is such a useful feature that we want it by default, but older versions of the tools don't know how to decode it, so the kernel cannot turn it on by default. It is similar to why the kernel does not select perf_event_attr.mmap2 by default. The kernel doesn't know whether the tool supports it. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1408129739-17368-6-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
465 lines
8.3 KiB
Plaintext
465 lines
8.3 KiB
Plaintext
%pure-parser
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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 <linux/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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#define ALLOC_LIST(list) \
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do { \
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list = malloc(sizeof(*list)); \
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ABORT_ON(!list); \
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INIT_LIST_HEAD(list); \
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} while (0)
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static inc_group_count(struct list_head *list,
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struct parse_events_evlist *data)
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{
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/* Count groups only have more than 1 members */
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if (!list_is_last(list->next, list))
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data->nr_groups++;
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}
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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_HW PE_VALUE_SYM_SW PE_RAW PE_TERM
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%token PE_EVENT_NAME
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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 PE_PREFIX_GROUP
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%token PE_ERROR
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%type <num> PE_VALUE
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%type <num> PE_VALUE_SYM_HW
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%type <num> PE_VALUE_SYM_SW
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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 <str> PE_EVENT_NAME
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%type <num> value_sym
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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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%type <head> event_mod
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%type <head> event_name
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%type <head> event
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%type <head> events
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%type <head> group_def
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%type <head> group
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%type <head> groups
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%union
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{
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char *str;
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u64 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 start_events
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PE_START_TERMS start_terms
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start_events: groups
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{
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struct parse_events_evlist *data = _data;
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parse_events_update_lists($1, &data->list);
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}
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groups:
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groups ',' group
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{
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struct list_head *list = $1;
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struct list_head *group = $3;
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parse_events_update_lists(group, list);
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$$ = list;
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}
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groups ',' event
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{
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struct list_head *list = $1;
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struct list_head *event = $3;
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parse_events_update_lists(event, list);
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$$ = list;
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}
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group
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event
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group:
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group_def ':' PE_MODIFIER_EVENT
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{
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struct list_head *list = $1;
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ABORT_ON(parse_events__modifier_group(list, $3));
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$$ = list;
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}
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group_def
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group_def:
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PE_NAME '{' events '}'
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{
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struct list_head *list = $3;
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inc_group_count(list, _data);
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parse_events__set_leader($1, list);
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$$ = list;
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}
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'{' events '}'
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{
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struct list_head *list = $2;
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inc_group_count(list, _data);
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parse_events__set_leader(NULL, list);
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$$ = list;
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}
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events:
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events ',' event
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{
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struct list_head *event = $3;
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struct list_head *list = $1;
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parse_events_update_lists(event, list);
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$$ = list;
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}
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event
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event: event_mod
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event_mod:
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event_name PE_MODIFIER_EVENT
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{
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struct list_head *list = $1;
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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_event(list, $2, false));
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$$ = list;
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}
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event_name
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event_name:
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PE_EVENT_NAME event_def
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{
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ABORT_ON(parse_events_name($2, $1));
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free($1);
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$$ = $2;
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}
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event_def
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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_evlist *data = _data;
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struct list_head *list;
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ALLOC_LIST(list);
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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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$$ = list;
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}
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PE_NAME '/' '/'
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{
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struct parse_events_evlist *data = _data;
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struct list_head *list;
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ALLOC_LIST(list);
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ABORT_ON(parse_events_add_pmu(list, &data->idx, $1, NULL));
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$$ = list;
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}
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value_sym:
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PE_VALUE_SYM_HW
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PE_VALUE_SYM_SW
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event_legacy_symbol:
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value_sym '/' event_config '/'
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{
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struct parse_events_evlist *data = _data;
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struct list_head *list;
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int type = $1 >> 16;
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int config = $1 & 255;
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ALLOC_LIST(list);
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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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$$ = list;
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}
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value_sym sep_slash_dc
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{
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struct parse_events_evlist *data = _data;
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struct list_head *list;
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int type = $1 >> 16;
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int config = $1 & 255;
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ALLOC_LIST(list);
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ABORT_ON(parse_events_add_numeric(list, &data->idx,
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type, config, NULL));
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$$ = 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_evlist *data = _data;
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struct list_head *list;
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ALLOC_LIST(list);
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ABORT_ON(parse_events_add_cache(list, &data->idx, $1, $3, $5));
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$$ = list;
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}
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PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT
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{
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struct parse_events_evlist *data = _data;
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struct list_head *list;
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ALLOC_LIST(list);
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ABORT_ON(parse_events_add_cache(list, &data->idx, $1, $3, NULL));
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$$ = list;
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}
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PE_NAME_CACHE_TYPE
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{
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struct parse_events_evlist *data = _data;
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struct list_head *list;
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ALLOC_LIST(list);
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ABORT_ON(parse_events_add_cache(list, &data->idx, $1, NULL, NULL));
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$$ = list;
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}
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event_legacy_mem:
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PE_PREFIX_MEM PE_VALUE ':' PE_MODIFIER_BP sep_dc
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{
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struct parse_events_evlist *data = _data;
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struct list_head *list;
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ALLOC_LIST(list);
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ABORT_ON(parse_events_add_breakpoint(list, &data->idx,
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(void *) $2, $4));
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$$ = 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_evlist *data = _data;
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struct list_head *list;
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ALLOC_LIST(list);
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ABORT_ON(parse_events_add_breakpoint(list, &data->idx,
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(void *) $2, NULL));
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$$ = list;
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}
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event_legacy_tracepoint:
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PE_NAME '-' PE_NAME ':' PE_NAME
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{
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struct parse_events_evlist *data = _data;
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struct list_head *list;
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char sys_name[128];
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snprintf(&sys_name, 128, "%s-%s", $1, $3);
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ALLOC_LIST(list);
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ABORT_ON(parse_events_add_tracepoint(list, &data->idx, &sys_name, $5));
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$$ = list;
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}
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PE_NAME ':' PE_NAME
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{
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struct parse_events_evlist *data = _data;
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struct list_head *list;
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ALLOC_LIST(list);
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ABORT_ON(parse_events_add_tracepoint(list, &data->idx, $1, $3));
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$$ = list;
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}
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event_legacy_numeric:
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PE_VALUE ':' PE_VALUE
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{
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struct parse_events_evlist *data = _data;
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struct list_head *list;
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ALLOC_LIST(list);
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ABORT_ON(parse_events_add_numeric(list, &data->idx, (u32)$1, $3, NULL));
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$$ = 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_evlist *data = _data;
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struct list_head *list;
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ALLOC_LIST(list);
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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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$$ = list;
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}
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start_terms: event_config
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{
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struct parse_events_terms *data = _data;
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data->terms = $1;
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}
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event_config:
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event_config ',' event_term
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{
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struct list_head *head = $1;
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struct parse_events_term *term = $3;
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ABORT_ON(!head);
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list_add_tail(&term->list, head);
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$$ = $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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$$ = term;
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}
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PE_NAME '=' PE_VALUE_SYM_HW
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{
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struct parse_events_term *term;
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int config = $3 & 255;
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ABORT_ON(parse_events_term__sym_hw(&term, $1, config));
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$$ = 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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$$ = term;
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}
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PE_VALUE_SYM_HW
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{
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struct parse_events_term *term;
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int config = $1 & 255;
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ABORT_ON(parse_events_term__sym_hw(&term, NULL, config));
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$$ = 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, (int)$1, NULL, $3));
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$$ = term;
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}
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PE_TERM '=' PE_VALUE
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{
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struct parse_events_term *term;
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ABORT_ON(parse_events_term__num(&term, (int)$1, NULL, $3));
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$$ = 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, (int)$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 __maybe_unused, void *scanner __maybe_unused,
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char const *msg __maybe_unused)
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{
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}
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