perf tools: Add stat config event read function
Introducing the perf_event__read_stat_config function to read a struct
perf_stat_config object data from a stat config event.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1445784728-21732-14-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/tests/stat.c b/tools/perf/tests/stat.c
index c7a2bdb..aa35d28 100644
--- a/tools/perf/tests/stat.c
+++ b/tools/perf/tests/stat.c
@@ -24,6 +24,7 @@
struct machine *machine __maybe_unused)
{
struct stat_config_event *config = &event->stat_config;
+ struct perf_stat_config stat_config;
#define HAS(term, val) \
has_term(config, PERF_STAT_CONFIG_TERM__##term, val)
@@ -35,6 +36,11 @@
#undef HAS
+ perf_event__read_stat_config(&stat_config, config);
+
+ TEST_ASSERT_VAL("wrong aggr_mode", stat_config.aggr_mode == AGGR_CORE);
+ TEST_ASSERT_VAL("wrong scale", stat_config.scale == 1);
+ TEST_ASSERT_VAL("wrong interval", stat_config.interval == 1);
return 0;
}
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index 1ea693c..223deaf 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -909,6 +909,30 @@
return err;
}
+void perf_event__read_stat_config(struct perf_stat_config *config,
+ struct stat_config_event *event)
+{
+ unsigned i;
+
+ for (i = 0; i < event->nr; i++) {
+
+ switch (event->data[i].tag) {
+#define CASE(__term, __val) \
+ case PERF_STAT_CONFIG_TERM__##__term: \
+ config->__val = event->data[i].val; \
+ break;
+
+ CASE(AGGR_MODE, aggr_mode)
+ CASE(SCALE, scale)
+ CASE(INTERVAL, interval)
+#undef CASE
+ default:
+ pr_warning("unknown stat config term %" PRIu64 "\n",
+ event->data[i].tag);
+ }
+ }
+}
+
size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp)
{
const char *s;
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 39014c7..4e87be2 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -477,6 +477,8 @@
struct perf_stat_config *config,
perf_event__handler_t process,
struct machine *machine);
+void perf_event__read_stat_config(struct perf_stat_config *config,
+ struct stat_config_event *event);
int perf_event__synthesize_modules(struct perf_tool *tool,
perf_event__handler_t process,