[PATCH v3 22/28] perf diff: Use perf_tool__init

[Ian Rogers <irogers@google.com>]

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>
---
 tools/perf/builtin-diff.c | 28 +++++++++++++---------------
 1 file changed, 13 insertions(+), 15 deletions(-)

diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
index 4c0567882a7a..28c5208fcdc9 100644
--- a/tools/perf/builtin-diff.c
+++ b/tools/perf/builtin-diff.c
@@ -467,21 +467,7 @@ static int diff__process_sample_event(const struct perf_tool *tool,
 	return ret;
 }
 
-static struct perf_diff pdiff = {
-	.tool = {
-		.sample	= diff__process_sample_event,
-		.mmap	= perf_event__process_mmap,
-		.mmap2	= perf_event__process_mmap2,
-		.comm	= perf_event__process_comm,
-		.exit	= perf_event__process_exit,
-		.fork	= perf_event__process_fork,
-		.lost	= perf_event__process_lost,
-		.namespaces = perf_event__process_namespaces,
-		.cgroup = perf_event__process_cgroup,
-		.ordered_events = true,
-		.ordering_requires_timestamps = true,
-	},
-};
+static struct perf_diff pdiff;
 
 static struct evsel *evsel_match(struct evsel *evsel,
 				      struct evlist *evlist)
@@ -1959,6 +1945,18 @@ int cmd_diff(int argc, const char **argv)
 	if (ret < 0)
 		return ret;
 
+	perf_tool__init(&pdiff.tool, /*ordered_events=*/true);
+	pdiff.tool.sample	= diff__process_sample_event;
+	pdiff.tool.mmap	= perf_event__process_mmap;
+	pdiff.tool.mmap2	= perf_event__process_mmap2;
+	pdiff.tool.comm	= perf_event__process_comm;
+	pdiff.tool.exit	= perf_event__process_exit;
+	pdiff.tool.fork	= perf_event__process_fork;
+	pdiff.tool.lost	= perf_event__process_lost;
+	pdiff.tool.namespaces = perf_event__process_namespaces;
+	pdiff.tool.cgroup = perf_event__process_cgroup;
+	pdiff.tool.ordering_requires_timestamps = true;
+
 	perf_config(diff__config, NULL);
 
 	argc = parse_options(argc, argv, options, diff_usage, 0);
-- 
2.45.2.803.g4e1b14247a-goog