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perf tools: Add support to parse event group syntax
Adding scanner/parser bits to parse event groups. The grammar for group is: groups: groups ',' group | group group: group_name '{' events '}' group_mod group_name: name | empty group_mod: ':' group_mods | empty group_mods: event_mod It's possible to use standard event modifier as a modifier for group. It'll be used as an update to existing event modifiers. It's necessary to use quoting ("'\) when specifying group on command line, since {} characters are interpreted by most of the shells. It is now possible to specify groups in event syntax like: '{cycles,faults}' - anonymous group 'group1{cycles,faults} - group with name 'group1' '{cycles,faults}:k - anonymous group with event modifier 'k' '{cpu-clock,task-clock},{minor-faults,major-faults}' - two anonymous groups The grouping functionality itself is coming shortly. Reviewed-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Peter Zijlstra <peterz@infradead.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ulrich Drepper <drepper@gmail.com> Link: http://lkml.kernel.org/n/tip-p4j8bnvo879uokum4k4zk5q6@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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a619183672
commit
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4 changed files with 97 additions and 16 deletions
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@ -611,19 +611,29 @@ int parse_events_add_pmu(struct list_head **list, int *idx,
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pmu_event_name(head_config));
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}
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int parse_events__modifier_group(struct list_head *list __used,
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char *event_mod __used)
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{
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return 0;
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}
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void parse_events__group(char *name __used, struct list_head *list __used)
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{
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}
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void parse_events_update_lists(struct list_head *list_event,
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struct list_head *list_all)
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{
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/*
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* Called for single event definition. Update the
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* 'all event' list, and reinit the 'signle event'
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* 'all event' list, and reinit the 'single event'
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* list, for next event definition.
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*/
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list_splice_tail(list_event, list_all);
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free(list_event);
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}
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int parse_events_modifier(struct list_head *list, char *str)
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int parse_events__modifier_event(struct list_head *list, char *str)
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{
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struct perf_evsel *evsel;
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int exclude = 0, exclude_GH = 0;
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@ -79,7 +79,8 @@ int parse_events__term_str(struct parse_events__term **_term,
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int parse_events__term_clone(struct parse_events__term **new,
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struct parse_events__term *term);
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void parse_events__free_terms(struct list_head *terms);
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int parse_events_modifier(struct list_head *list, char *str);
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int parse_events__modifier_event(struct list_head *list, char *str);
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int parse_events__modifier_group(struct list_head *list, char *event_mod);
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int parse_events_add_tracepoint(struct list_head **list, int *idx,
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char *sys, char *event);
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int parse_events_add_numeric(struct list_head **list, int *idx,
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@ -91,6 +92,7 @@ int parse_events_add_breakpoint(struct list_head **list, int *idx,
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void *ptr, char *type);
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int parse_events_add_pmu(struct list_head **list, int *idx,
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char *pmu , struct list_head *head_config);
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void parse_events__group(char *name, struct list_head *list);
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void parse_events_update_lists(struct list_head *list_event,
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struct list_head *list_all);
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void parse_events_error(void *data, void *scanner, char const *msg);
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@ -151,6 +151,8 @@ r{num_raw_hex} { return raw(yyscanner); }
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- { return '-'; }
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, { return ','; }
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: { return ':'; }
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"{" { return '{'; }
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"}" { return '}'; }
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= { return '='; }
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\n { }
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@ -30,7 +30,7 @@ do { \
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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_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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@ -53,6 +53,11 @@ do { \
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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
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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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@ -64,33 +69,95 @@ do { \
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%%
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start:
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PE_START_EVENTS events
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PE_START_EVENTS start_events
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PE_START_TERMS terms
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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_data__events *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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$$ = list;
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}
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group_def
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group_def:
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PE_NAME '{' events '}'
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{
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struct list_head *list = $3;
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parse_events__group($1, list);
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$$ = 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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parse_events__group(NULL, list);
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$$ = list;
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}
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events:
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events ',' event | event
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events ',' event
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{
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struct list_head *event = $3;
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struct list_head *list = $1;
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parse_events_update_lists(event, list);
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$$ = list;
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}
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event
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event:
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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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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($1, $2));
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parse_events_update_lists($1, &data->list);
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ABORT_ON(parse_events__modifier_event(list, $2));
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$$ = list;
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}
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event_def
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{
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struct parse_events_data__events *data = _data;
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parse_events_update_lists($1, &data->list);
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}
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event_def: event_pmu |
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event_legacy_symbol |
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@ -222,7 +289,7 @@ PE_RAW
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$$ = list;
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}
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terms: event_config
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start_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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