[PATCH 20/21] perf tools: Add support to parse event on/off toggle terms
From: Jiri Olsa
Date: Wed Sep 25 2013 - 08:52:22 EST
Adding parsing support for 'on' and 'off' terms within the
event syntax. We can now specify on/off terms like:
-e 'cycles,irq_entry/on=cycles/,irq_exit/off=cycles/'
Only string value is accepted for both terms. The name
will be used in a search for toggled event.
Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Cc: Corey Ashford <cjashfor@xxxxxxxxxxxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/util/evsel.c | 1 +
tools/perf/util/evsel.h | 3 ++
tools/perf/util/parse-events.c | 69 +++++++++++++++++++++++++++++++++++-------
tools/perf/util/parse-events.h | 5 ++-
tools/perf/util/parse-events.l | 2 ++
tools/perf/util/parse-events.y | 6 ++--
6 files changed, 71 insertions(+), 15 deletions(-)
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 95590fe..3ed7947 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -820,6 +820,7 @@ void perf_evsel__delete(struct perf_evsel *evsel)
free(evsel->group_name);
if (evsel->tp_format)
pevent_free_format(evsel->tp_format);
+ free(evsel->toggle_name);
free(evsel->name);
free(evsel);
}
diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index 4a7bdc7..e70415b 100644
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -90,6 +90,9 @@ struct perf_evsel {
int sample_read;
struct perf_evsel *leader;
char *group_name;
+ /* toggle event config */
+ char toggle_flag;
+ char *toggle_name;
};
#define hists_to_evsel(h) container_of(h, struct perf_evsel, hists)
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 899c59e..4e8243f 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -267,7 +267,42 @@ const char *event_type(int type)
return "unknown";
}
+static int config_evsel_term(struct perf_evsel *evsel,
+ struct parse_events_term *term)
+{
+ if (evsel->toggle_name)
+ return -EINVAL;
+ switch (term->type_term) {
+ case PARSE_EVENTS__TERM_TYPE_TOGGLE_ON:
+ evsel->toggle_flag = PERF_FLAG_TOGGLE_ON;
+ break;
+ case PARSE_EVENTS__TERM_TYPE_TOGGLE_OFF:
+ evsel->toggle_flag = PERF_FLAG_TOGGLE_OFF;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ evsel->toggle_name = strdup(term->val.str);
+ return 0;
+}
+
+static int config_evsel(struct perf_evsel *evsel,
+ struct list_head *head)
+{
+ struct parse_events_term *term;
+
+ list_for_each_entry(term, head, list) {
+ int ret;
+
+ ret = config_evsel_term(evsel, term);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
static int __add_event(struct list_head *list, int *idx,
struct perf_event_attr *attr,
@@ -374,7 +409,8 @@ int parse_events_add_cache(struct list_head *list, int *idx,
}
static int add_tracepoint(struct list_head *list, int *idx,
- char *sys_name, char *evt_name)
+ char *sys_name, char *evt_name,
+ struct list_head *terms)
{
struct perf_evsel *evsel;
@@ -382,13 +418,20 @@ static int add_tracepoint(struct list_head *list, int *idx,
if (!evsel)
return -ENOMEM;
+ if (terms && config_evsel(evsel, terms)) {
+ perf_evsel__delete(evsel);
+ free(list);
+ return -EINVAL;
+ }
+
list_add_tail(&evsel->node, list);
return 0;
}
static int add_tracepoint_multi_event(struct list_head *list, int *idx,
- char *sys_name, char *evt_name)
+ char *sys_name, char *evt_name,
+ struct list_head *terms)
{
char evt_path[MAXPATHLEN];
struct dirent *evt_ent;
@@ -412,7 +455,8 @@ static int add_tracepoint_multi_event(struct list_head *list, int *idx,
if (!strglobmatch(evt_ent->d_name, evt_name))
continue;
- ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name);
+ ret = add_tracepoint(list, idx, sys_name,
+ evt_ent->d_name, terms);
}
closedir(evt_dir);
@@ -420,15 +464,17 @@ static int add_tracepoint_multi_event(struct list_head *list, int *idx,
}
static int add_tracepoint_event(struct list_head *list, int *idx,
- char *sys_name, char *evt_name)
+ char *sys_name, char *evt_name,
+ struct list_head *terms)
{
return strpbrk(evt_name, "*?") ?
- add_tracepoint_multi_event(list, idx, sys_name, evt_name) :
- add_tracepoint(list, idx, sys_name, evt_name);
+ add_tracepoint_multi_event(list, idx, sys_name, evt_name, terms) :
+ add_tracepoint(list, idx, sys_name, evt_name, terms);
}
static int add_tracepoint_multi_sys(struct list_head *list, int *idx,
- char *sys_name, char *evt_name)
+ char *sys_name, char *evt_name,
+ struct list_head *terms)
{
struct dirent *events_ent;
DIR *events_dir;
@@ -452,7 +498,7 @@ static int add_tracepoint_multi_sys(struct list_head *list, int *idx,
continue;
ret = add_tracepoint_event(list, idx, events_ent->d_name,
- evt_name);
+ evt_name, terms);
}
closedir(events_dir);
@@ -460,7 +506,8 @@ static int add_tracepoint_multi_sys(struct list_head *list, int *idx,
}
int parse_events_add_tracepoint(struct list_head *list, int *idx,
- char *sys, char *event)
+ char *sys, char *event,
+ struct list_head *terms)
{
int ret;
@@ -469,9 +516,9 @@ int parse_events_add_tracepoint(struct list_head *list, int *idx,
return ret;
if (strpbrk(sys, "*?"))
- return add_tracepoint_multi_sys(list, idx, sys, event);
+ return add_tracepoint_multi_sys(list, idx, sys, event, terms);
else
- return add_tracepoint_event(list, idx, sys, event);
+ return add_tracepoint_event(list, idx, sys, event, terms);
}
static int
diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h
index a9db24f..8bd5995 100644
--- a/tools/perf/util/parse-events.h
+++ b/tools/perf/util/parse-events.h
@@ -49,6 +49,8 @@ enum {
PARSE_EVENTS__TERM_TYPE_NAME,
PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD,
PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE,
+ PARSE_EVENTS__TERM_TYPE_TOGGLE_ON,
+ PARSE_EVENTS__TERM_TYPE_TOGGLE_OFF,
};
struct parse_events_term {
@@ -86,7 +88,8 @@ 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_name(struct list_head *list, char *name);
int parse_events_add_tracepoint(struct list_head *list, int *idx,
- char *sys, char *event);
+ char *sys, char *event,
+ struct list_head *terms);
int parse_events_add_numeric(struct list_head *list, int *idx,
u32 type, u64 config,
struct list_head *terms);
diff --git a/tools/perf/util/parse-events.l b/tools/perf/util/parse-events.l
index 560ca86..afcc0d0 100644
--- a/tools/perf/util/parse-events.l
+++ b/tools/perf/util/parse-events.l
@@ -171,6 +171,8 @@ config2 { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CONFIG2); }
name { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NAME); }
period { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD); }
branch_type { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE); }
+on { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_TOGGLE_ON); }
+off { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_TOGGLE_OFF); }
, { return ','; }
"/" { BEGIN(INITIAL); return '/'; }
{name_minus} { return str(yyscanner, PE_NAME); }
diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y
index ca93b72..7692562 100644
--- a/tools/perf/util/parse-events.y
+++ b/tools/perf/util/parse-events.y
@@ -200,7 +200,7 @@ event_def: event_pmu |
event_legacy_symbol |
event_legacy_cache sep_dc |
event_legacy_mem |
- event_legacy_tracepoint sep_dc |
+ event_legacy_tracepoint |
event_legacy_numeric sep_dc |
event_legacy_raw sep_dc
@@ -305,13 +305,13 @@ PE_PREFIX_MEM PE_VALUE sep_dc
}
event_legacy_tracepoint:
-PE_NAME ':' PE_NAME
+PE_NAME ':' PE_NAME event_config_optional
{
struct parse_events_evlist *data = _data;
struct list_head *list;
ALLOC_LIST(list);
- ABORT_ON(parse_events_add_tracepoint(list, &data->idx, $1, $3));
+ ABORT_ON(parse_events_add_tracepoint(list, &data->idx, $1, $3, $4));
$$ = list;
}
--
1.7.11.7
--
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