From: Ian Rogers <irogers@google.com>
Date: Sun, 5 Oct 2025 18:24:21 +0000 (-0700)
Subject: perf top: Use evlist__new_default when no events specified
X-Git-Tag: v6.19-rc1~61^2~192
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=468071acfc05135b9e24ed0beb535ac5c6cff945;p=thirdparty%2Fkernel%2Flinux.git

perf top: Use evlist__new_default when no events specified

Rather than distributing the code doing similar things to
evlist__new_default, use the one implementation so that paranoia and
wildcard scanning can be optimized.

Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: James Clark <james.clark@linaro.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---

diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index a11f629c7d76a..710604c4f6f6c 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -1695,11 +1695,13 @@ int cmd_top(int argc, const char **argv)
 		goto out_delete_evlist;
 
 	if (!top.evlist->core.nr_entries) {
-		bool can_profile_kernel = perf_event_paranoid_check(1);
-		int err = parse_event(top.evlist, can_profile_kernel ? "cycles:P" : "cycles:Pu");
+		struct evlist *def_evlist = evlist__new_default();
 
-		if (err)
+		if (!def_evlist)
 			goto out_delete_evlist;
+
+		evlist__splice_list_tail(top.evlist, &def_evlist->core.entries);
+		evlist__delete(def_evlist);
 	}
 
 	status = evswitch__init(&top.evswitch, top.evlist, stderr);