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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>
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3 changed files with 32 additions and 0 deletions
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@ -24,6 +24,7 @@ static int process_event(struct perf_tool *tool __maybe_unused,
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struct machine *machine __maybe_unused)
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{
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struct stat_config_event *config = &event->stat_config;
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struct perf_stat_config stat_config;
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#define HAS(term, val) \
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has_term(config, PERF_STAT_CONFIG_TERM__##term, val)
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@ -35,6 +36,11 @@ static int process_event(struct perf_tool *tool __maybe_unused,
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#undef HAS
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perf_event__read_stat_config(&stat_config, config);
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TEST_ASSERT_VAL("wrong aggr_mode", stat_config.aggr_mode == AGGR_CORE);
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TEST_ASSERT_VAL("wrong scale", stat_config.scale == 1);
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TEST_ASSERT_VAL("wrong interval", stat_config.interval == 1);
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return 0;
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}
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@ -909,6 +909,30 @@ int perf_event__synthesize_stat_config(struct perf_tool *tool,
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return err;
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}
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void perf_event__read_stat_config(struct perf_stat_config *config,
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struct stat_config_event *event)
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{
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unsigned i;
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for (i = 0; i < event->nr; i++) {
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switch (event->data[i].tag) {
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#define CASE(__term, __val) \
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case PERF_STAT_CONFIG_TERM__##__term: \
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config->__val = event->data[i].val; \
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break;
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CASE(AGGR_MODE, aggr_mode)
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CASE(SCALE, scale)
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CASE(INTERVAL, interval)
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#undef CASE
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default:
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pr_warning("unknown stat config term %" PRIu64 "\n",
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event->data[i].tag);
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}
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}
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}
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size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp)
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{
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const char *s;
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@ -477,6 +477,8 @@ int perf_event__synthesize_stat_config(struct perf_tool *tool,
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struct perf_stat_config *config,
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perf_event__handler_t process,
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struct machine *machine);
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void perf_event__read_stat_config(struct perf_stat_config *config,
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struct stat_config_event *event);
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int perf_event__synthesize_modules(struct perf_tool *tool,
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perf_event__handler_t process,
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