perf stat: Use metrics for --smi-cost

Rather than parsing events for --smi-cost, use the json metric group
'smi'.

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexandre Torgue <alexandre.torgue@foss.st.com>
Cc: Andrii Nakryiko <andrii@kernel.org>
Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Eduard Zingerman <eddyz87@gmail.com>
Cc: Florian Fischer <florian.fischer@muhq.space>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jing Zhang <renyu.zj@linux.alibaba.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Sandipan Das <sandipan.das@amd.com>
Cc: Sean Christopherson <seanjc@google.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Link: https://lore.kernel.org/r/20230219092848.639226-45-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 11 insertions, 23 deletions

diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index e6b60b058257..9c1fbf154ee3 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -100,14 +100,6 @@
 
 static void print_counters(struct timespec *ts, int argc, const char **argv);
 
-static const char *smi_cost_attrs = {
-	"{"
-	"msr/aperf/,"
-	"msr/smi/,"
-	"cycles"
-	"}"
-};
-
 static struct evlist	*evsel_list;
 static bool all_counters_use_bpf = true;
 
@@ -1666,7 +1658,6 @@ static int perf_stat_init_aggr_mode_file(struct perf_stat *st)
  */
 static int add_default_attributes(void)
 {
-	int err;
 	struct perf_event_attr default_attrs0[] = {
 
   { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK		},
@@ -1806,11 +1797,10 @@ static int add_default_attributes(void)
 	}
 
 	if (smi_cost) {
-		struct parse_events_error errinfo;
 		int smi;
 
 		if (sysfs__read_int(FREEZE_ON_SMI_PATH, &smi) < 0) {
-			fprintf(stderr, "freeze_on_smi is not supported.\n");
+			pr_err("freeze_on_smi is not supported.");
 			return -1;
 		}
 
@@ -1822,23 +1812,21 @@ static int add_default_attributes(void)
 			smi_reset = true;
 		}
 
-		if (!pmu_have_event("msr", "aperf") ||
-		    !pmu_have_event("msr", "smi")) {
-			fprintf(stderr, "To measure SMI cost, it needs "
-				"msr/aperf/, msr/smi/ and cpu/cycles/ support\n");
+		if (!metricgroup__has_metric("smi")) {
+			pr_err("Missing smi metrics");
 			return -1;
 		}
+
 		if (!force_metric_only)
 			stat_config.metric_only = true;
 
-		parse_events_error__init(&errinfo);
-		err = parse_events(evsel_list, smi_cost_attrs, &errinfo);
-		if (err) {
-			parse_events_error__print(&errinfo, smi_cost_attrs);
-			fprintf(stderr, "Cannot set up SMI cost events\n");
-		}
-		parse_events_error__exit(&errinfo);
-		return err ? -1 : 0;
+		return metricgroup__parse_groups(evsel_list, "smi",
+						stat_config.metric_no_group,
+						stat_config.metric_no_merge,
+						stat_config.metric_no_threshold,
+						stat_config.user_requested_cpu_list,
+						stat_config.system_wide,
+						&stat_config.metric_events);
 	}
 
 	if (topdown_run) {