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perf tools: Add stat config event read function

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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>
This commit is contained in:
Jiri Olsa 2015-10-25 15:51:29 +01:00 committed by Arnaldo Carvalho de Melo
parent 6742434261
commit 8e381596b6
3 changed files with 32 additions and 0 deletions
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6
tools/perf/tests/stat.c
View file

@ -24,6 +24,7 @@ static int process_event(struct perf_tool *tool __maybe_unused,
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 @@ static int process_event(struct perf_tool *tool __maybe_unused,
#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;
}

24
tools/perf/util/event.c
View file

@ -909,6 +909,30 @@ int perf_event__synthesize_stat_config(struct perf_tool *tool,
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;

2
tools/perf/util/event.h
View file

@ -477,6 +477,8 @@ int perf_event__synthesize_stat_config(struct perf_tool *tool,
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,