perf stat: Use perf_tool__init()

Use perf_tool__init() so that more uses of 'struct perf_tool' can be const
and not relying on perf_tool__fill_defaults().
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ilkka Koskinen <ilkka@os.amperecomputing.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Jonathan Cameron <jonathan.cameron@huawei.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linux.dev>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Nick Terrell <terrelln@fb.com>
Cc: Oliver Upton <oliver.upton@linux.dev>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <song@kernel.org>
Cc: Sun Haiyong <sunhaiyong@loongson.cn>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Yanteng Si <siyanteng@loongson.cn>
Cc: Yicong Yang <yangyicong@hisilicon.com>
Cc: linux-arm-kernel@lists.infradead.org
Link: https://lore.kernel.org/r/20240812204720.631678-17-irogers@google.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/builtin-stat.c

@@ -2271,15 +2271,6 @@ static const char * const stat_report_usage[] = {
 };
 
 static struct perf_stat perf_stat = {
-	.tool = {
-		.attr		= perf_event__process_attr,
-		.event_update	= perf_event__process_event_update,
-		.thread_map	= process_thread_map_event,
-		.cpu_map	= process_cpu_map_event,
-		.stat_config	= process_stat_config_event,
-		.stat		= perf_event__process_stat_event,
-		.stat_round	= process_stat_round_event,
-	},
 	.aggr_mode	= AGGR_UNSET,
 	.aggr_level	= 0,
 };
@@ -2322,6 +2313,15 @@ static int __cmd_report(int argc, const char **argv)
 	perf_stat.data.path = input_name;
 	perf_stat.data.mode = PERF_DATA_MODE_READ;
 
+	perf_tool__init(&perf_stat.tool, /*ordered_events=*/false);
+	perf_stat.tool.attr		= perf_event__process_attr;
+	perf_stat.tool.event_update	= perf_event__process_event_update;
+	perf_stat.tool.thread_map	= process_thread_map_event;
+	perf_stat.tool.cpu_map		= process_cpu_map_event;
+	perf_stat.tool.stat_config	= process_stat_config_event;
+	perf_stat.tool.stat		= perf_event__process_stat_event;
+	perf_stat.tool.stat_round	= process_stat_round_event;
+
 	session = perf_session__new(&perf_stat.data, &perf_stat.tool);
 	if (IS_ERR(session))
 		return PTR_ERR(session);