From 89efb029502d7f2d0993ed2aa9280c414336939c Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Wed, 8 Aug 2012 12:14:14 +0200 Subject: [PATCH] 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 Signed-off-by: Jiri Olsa Acked-by: Peter Zijlstra Cc: Andi Kleen Cc: Arnaldo Carvalho de Melo Cc: Corey Ashford Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Ulrich Drepper Link: http://lkml.kernel.org/n/tip-p4j8bnvo879uokum4k4zk5q6@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/parse-events.c | 14 ++++++- tools/perf/util/parse-events.h | 4 +- tools/perf/util/parse-events.l | 2 + tools/perf/util/parse-events.y | 93 ++++++++++++++++++++++++++++++++++++------ 4 files changed, 97 insertions(+), 16 deletions(-) diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index 3ec4bfc..57d5809 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -611,19 +611,29 @@ int parse_events_add_pmu(struct list_head **list, int *idx, pmu_event_name(head_config)); } +int parse_events__modifier_group(struct list_head *list __used, + char *event_mod __used) +{ + return 0; +} + +void parse_events__group(char *name __used, struct list_head *list __used) +{ +} + void parse_events_update_lists(struct list_head *list_event, struct list_head *list_all) { /* * Called for single event definition. Update the - * 'all event' list, and reinit the 'signle event' + * 'all event' list, and reinit the 'single event' * list, for next event definition. */ list_splice_tail(list_event, list_all); free(list_event); } -int parse_events_modifier(struct list_head *list, char *str) +int parse_events__modifier_event(struct list_head *list, char *str) { struct perf_evsel *evsel; int exclude = 0, exclude_GH = 0; diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h index 00416d7f..c3bb04c 100644 --- a/tools/perf/util/parse-events.h +++ b/tools/perf/util/parse-events.h @@ -79,7 +79,8 @@ int parse_events__term_str(struct parse_events__term **_term, int parse_events__term_clone(struct parse_events__term **new, struct parse_events__term *term); void parse_events__free_terms(struct list_head *terms); -int parse_events_modifier(struct list_head *list, char *str); +int parse_events__modifier_event(struct list_head *list, char *str); +int parse_events__modifier_group(struct list_head *list, char *event_mod); int parse_events_add_tracepoint(struct list_head **list, int *idx, char *sys, char *event); int parse_events_add_numeric(struct list_head **list, int *idx, @@ -91,6 +92,7 @@ int parse_events_add_breakpoint(struct list_head **list, int *idx, void *ptr, char *type); int parse_events_add_pmu(struct list_head **list, int *idx, char *pmu , struct list_head *head_config); +void parse_events__group(char *name, struct list_head *list); void parse_events_update_lists(struct list_head *list_event, struct list_head *list_all); void parse_events_error(void *data, void *scanner, char const *msg); diff --git a/tools/perf/util/parse-events.l b/tools/perf/util/parse-events.l index e4abdf2..2c0d006 100644 --- a/tools/perf/util/parse-events.l +++ b/tools/perf/util/parse-events.l @@ -151,6 +151,8 @@ r{num_raw_hex} { return raw(yyscanner); } - { return '-'; } , { return ','; } : { return ':'; } +"{" { return '{'; } +"}" { return '}'; } = { return '='; } \n { } diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y index 423d331..15e6e97 100644 --- a/tools/perf/util/parse-events.y +++ b/tools/perf/util/parse-events.y @@ -30,7 +30,7 @@ do { \ %token PE_NAME %token PE_MODIFIER_EVENT PE_MODIFIER_BP %token PE_NAME_CACHE_TYPE PE_NAME_CACHE_OP_RESULT -%token PE_PREFIX_MEM PE_PREFIX_RAW +%token PE_PREFIX_MEM PE_PREFIX_RAW PE_PREFIX_GROUP %token PE_ERROR %type PE_VALUE %type PE_VALUE_SYM_HW @@ -53,6 +53,11 @@ do { \ %type event_legacy_numeric %type event_legacy_raw %type event_def +%type event +%type events +%type group_def +%type group +%type groups %union { @@ -64,33 +69,95 @@ do { \ %% start: -PE_START_EVENTS events +PE_START_EVENTS start_events | -PE_START_TERMS terms +PE_START_TERMS start_terms + +start_events: groups +{ + struct parse_events_data__events *data = _data; + + parse_events_update_lists($1, &data->list); +} + +groups: +groups ',' group +{ + struct list_head *list = $1; + struct list_head *group = $3; + + parse_events_update_lists(group, list); + $$ = list; +} +| +groups ',' event +{ + struct list_head *list = $1; + struct list_head *event = $3; + + parse_events_update_lists(event, list); + $$ = list; +} +| +group +| +event + +group: +group_def ':' PE_MODIFIER_EVENT +{ + struct list_head *list = $1; + + ABORT_ON(parse_events__modifier_group(list, $3)); + $$ = list; +} +| +group_def + +group_def: +PE_NAME '{' events '}' +{ + struct list_head *list = $3; + + parse_events__group($1, list); + $$ = list; +} +| +'{' events '}' +{ + struct list_head *list = $2; + + parse_events__group(NULL, list); + $$ = list; +} events: -events ',' event | event +events ',' event +{ + struct list_head *event = $3; + struct list_head *list = $1; + + parse_events_update_lists(event, list); + $$ = list; +} +| +event event: event_def PE_MODIFIER_EVENT { - struct parse_events_data__events *data = _data; + 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($1, $2)); - parse_events_update_lists($1, &data->list); + ABORT_ON(parse_events__modifier_event(list, $2)); + $$ = list; } | event_def -{ - struct parse_events_data__events *data = _data; - - parse_events_update_lists($1, &data->list); -} event_def: event_pmu | event_legacy_symbol | @@ -222,7 +289,7 @@ PE_RAW $$ = list; } -terms: event_config +start_terms: event_config { struct parse_events_data__terms *data = _data; data->terms = $1; -- 2.7.4