From: Jiri Olsa Date: Wed, 8 Aug 2012 10:21:54 +0000 (+0200) Subject: perf tools: Add support to update event modifier X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=f5b1135bf79557563a814e53ecd610cce663c1e3;p=openwrt%2Fstaging%2Fblogic.git perf tools: Add support to update event modifier Adding support to update already defined event's attribute with event modifier. This change will allow to use group modifier as an update to the existing event modifiers. Adding 'add' parameter to the parse_events__modifier_event function. Calling it with 'add' = false/true, the event modifier is initialized/updated respectively. Added exclude_GH flag to evsel struct, because we need to remember if one of 'GH' modifiers was used for event. The reason is that the default settings for exclude_guest is 1 and during the group modifier processing we have no other way of knowing if it was set by default or by event modifier. Keeping the current behaviour, that any event/group modifier reset the defaults for exclude_host (0) and exclude_guest (1). 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-8peaey3e2qc9dwtkvzbi4wmx@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h index a56c4574b3fe..6a258c90e7ce 100644 --- a/tools/perf/util/evsel.h +++ b/tools/perf/util/evsel.h @@ -68,6 +68,8 @@ struct perf_evsel { } handler; unsigned int sample_size; bool supported; + /* parse modifier helper */ + int exclude_GH; }; struct cpu_map; diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index 57d5809f2860..4364575ce6ac 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -633,14 +633,38 @@ void parse_events_update_lists(struct list_head *list_event, free(list_event); } -int parse_events__modifier_event(struct list_head *list, char *str) +struct event_modifier { + int eu; + int ek; + int eh; + int eH; + int eG; + int precise; + int exclude_GH; +}; + +static int get_event_modifier(struct event_modifier *mod, char *str, + struct perf_evsel *evsel) { - struct perf_evsel *evsel; - int exclude = 0, exclude_GH = 0; - int eu = 0, ek = 0, eh = 0, eH = 0, eG = 0, precise = 0; + int eu = evsel ? evsel->attr.exclude_user : 0; + int ek = evsel ? evsel->attr.exclude_kernel : 0; + int eh = evsel ? evsel->attr.exclude_hv : 0; + int eH = evsel ? evsel->attr.exclude_host : 0; + int eG = evsel ? evsel->attr.exclude_guest : 0; + int precise = evsel ? evsel->attr.precise_ip : 0; - if (str == NULL) - return 0; + int exclude = eu | ek | eh; + int exclude_GH = evsel ? evsel->exclude_GH : 0; + + /* + * We are here for group and 'GH' was not set as event + * modifier and whatever event/group modifier override + * default 'GH' setup. + */ + if (evsel && !exclude_GH) + eH = eG = 0; + + memset(mod, 0, sizeof(*mod)); while (*str) { if (*str == 'u') { @@ -684,13 +708,39 @@ int parse_events__modifier_event(struct list_head *list, char *str) if (precise > 3) return -EINVAL; + mod->eu = eu; + mod->ek = ek; + mod->eh = eh; + mod->eH = eH; + mod->eG = eG; + mod->precise = precise; + mod->exclude_GH = exclude_GH; + return 0; +} + +int parse_events__modifier_event(struct list_head *list, char *str, bool add) +{ + struct perf_evsel *evsel; + struct event_modifier mod; + + if (str == NULL) + return 0; + + if (!add && get_event_modifier(&mod, str, NULL)) + return -EINVAL; + list_for_each_entry(evsel, list, node) { - evsel->attr.exclude_user = eu; - evsel->attr.exclude_kernel = ek; - evsel->attr.exclude_hv = eh; - evsel->attr.precise_ip = precise; - evsel->attr.exclude_host = eH; - evsel->attr.exclude_guest = eG; + + if (add && get_event_modifier(&mod, str, evsel)) + return -EINVAL; + + evsel->attr.exclude_user = mod.eu; + evsel->attr.exclude_kernel = mod.ek; + evsel->attr.exclude_hv = mod.eh; + evsel->attr.precise_ip = mod.precise; + evsel->attr.exclude_host = mod.eH; + evsel->attr.exclude_guest = mod.eG; + evsel->exclude_GH = mod.exclude_GH; } return 0; diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h index c3bb04c6f025..75a6800082a1 100644 --- a/tools/perf/util/parse-events.h +++ b/tools/perf/util/parse-events.h @@ -79,7 +79,7 @@ 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_event(struct list_head *list, char *str); +int parse_events__modifier_event(struct list_head *list, char *str, bool add); 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); diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y index 15e6e97e5b34..084c35fc2d26 100644 --- a/tools/perf/util/parse-events.y +++ b/tools/perf/util/parse-events.y @@ -153,7 +153,7 @@ event_def PE_MODIFIER_EVENT * (there could be more events added for multiple tracepoint * definitions via '*?'. */ - ABORT_ON(parse_events__modifier_event(list, $2)); + ABORT_ON(parse_events__modifier_event(list, $2, false)); $$ = list; } |