From 3ec1248747e40261264ce0afe4b7bd0ff6822115 Mon Sep 17 00:00:00 2001
From: Namhyung Kim <namhyung@kernel.org>
Date: Wed, 1 Jul 2026 12:41:53 -0700
Subject: [PATCH] perf test: Extend perf kvm tests to check default event

It can now pass command line arguments to perf kvm record.  Let's pass
'sleep 1' directly and see it doesn't fail.

  $ sudo perf test -vv kvm
   96: perf kvm tests:
  ---- start ----
  test child forked, pid 3686726
  Starting qemu-system-x86_64...
  Testing perf kvm stat
  Recording kvm events for pid 3686746 (duration 1s)...
  perf kvm stat test [Success]
  Testing perf kvm record/report
  Recording kvm profile for pid 3686746 (duration 1s)...
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.576 MB /tmp/__perf_kvm_test.perf.data.0HgX6 (4009 samples) ]
  perf kvm record/report test [Success]
  Testing perf kvm buildid-list
  perf kvm buildid-list test [Success]
  Testing perf kvm stat live
  perf kvm stat live test [Success]
  Testing perf kvm record default event with command line
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.000 MB /dev/null ]
  perf kvm record default event [Success]
  ---- end(0) ----
   96: perf kvm tests                                               : Ok

  === Test Summary ===
  Passed main tests : 1
  Passed subtests   : 0
  Skipped tests     : 0
  Failed tests      : 0

Tested-by: Ian Rogers <irogers@google.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
 tools/perf/tests/shell/kvm.sh | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/tools/perf/tests/shell/kvm.sh b/tools/perf/tests/shell/kvm.sh
index a5396f8e6fe5..7b26368051ff 100755
--- a/tools/perf/tests/shell/kvm.sh
+++ b/tools/perf/tests/shell/kvm.sh
@@ -138,6 +138,15 @@ test_kvm_stat_live() {
 	echo "perf kvm stat live test [Success]"
 }
 
+test_kvm_default_event() {
+	echo "Testing perf kvm record default event with command line"
+
+	# Check if kvm record with default events handle command line arguments
+	perf kvm record -p "${qemu_pid}" -o /dev/null sleep 1
+
+	echo "perf kvm record default event [Success]"
+}
+
 setup_qemu() {
 	# Find qemu
 	if [ "$(uname -m)" = "x86_64" ]; then
@@ -191,6 +200,7 @@ if [ $err -eq 0 ]; then
 	test_kvm_record_report
 	test_kvm_buildid_list
 	test_kvm_stat_live
+	test_kvm_default_event
 fi
 
 cleanup