perf kmem: Use perf_tool__init

Reduce the scope of the tool from global/static to just that of the
cmd_kmem function where the session is scoped. Use the perf_tool__init()
to initialize default values.
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/20240812204720.631678-7-irogers@google.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/builtin-kmem.c

@@ -986,15 +986,6 @@ static int process_sample_event(const struct perf_tool *tool __maybe_unused,
 	return err;
 }
 
-static struct perf_tool perf_kmem = {
-	.sample		 = process_sample_event,
-	.comm		 = perf_event__process_comm,
-	.mmap		 = perf_event__process_mmap,
-	.mmap2		 = perf_event__process_mmap2,
-	.namespaces	 = perf_event__process_namespaces,
-	.ordered_events	 = true,
-};
-
 static double fragmentation(unsigned long n_req, unsigned long n_alloc)
 {
 	if (n_alloc == 0)
@@ -1971,6 +1962,7 @@ int cmd_kmem(int argc, const char **argv)
 		NULL
 	};
 	struct perf_session *session;
+	struct perf_tool perf_kmem;
 	static const char errmsg[] = "No %s allocation events found.  Have you run 'perf kmem record --%s'?\n";
 	int ret = perf_config(kmem_config, NULL);
 
@@ -1998,6 +1990,13 @@ int cmd_kmem(int argc, const char **argv)
 
 	data.path = input_name;
 
+	perf_tool__init(&perf_kmem, /*ordered_events=*/true);
+	perf_kmem.sample	= process_sample_event;
+	perf_kmem.comm		= perf_event__process_comm;
+	perf_kmem.mmap		= perf_event__process_mmap;
+	perf_kmem.mmap2		= perf_event__process_mmap2;
+	perf_kmem.namespaces	= perf_event__process_namespaces;
+
 	kmem_session = session = perf_session__new(&data, &perf_kmem);
 	if (IS_ERR(session))
 		return PTR_ERR(session);