From: David Gow <redacted>

Add a new kernel command-line option, 'kunit_shutdown', which allows the
user to specify that the kernel poweroff, halt, or reboot after
completing all KUnit tests; this is very handy for running KUnit tests
on UML or a VM so that the UML/VM process exits cleanly immediately
after running all tests without needing a special initramfs.

Signed-off-by: David Gow <redacted>
Signed-off-by: Brendan Higgins <redacted>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
---
 lib/kunit/executor.c                | 20 ++++++++++++++++++++
 tools/testing/kunit/kunit_kernel.py |  2 +-
 tools/testing/kunit/kunit_parser.py |  2 +-
 3 files changed, 22 insertions(+), 2 deletions(-)

diff --git a/lib/kunit/executor.c b/lib/kunit/executor.c
index a95742a4ece73..38061d456afb2 100644
--- a/lib/kunit/executor.c
+++ b/lib/kunit/executor.c

@@ -1,5 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 
+#include <linux/reboot.h>
 #include <kunit/test.h>
 
 /*

@@ -11,6 +12,23 @@ extern struct kunit_suite * const * const __kunit_suites_end[];
 
 #if IS_BUILTIN(CONFIG_KUNIT)
 
+static char *kunit_shutdown;
+core_param(kunit_shutdown, kunit_shutdown, charp, 0644);
+
+static void kunit_handle_shutdown(void)
+{
+	if (!kunit_shutdown)
+		return;
+
+	if (!strcmp(kunit_shutdown, "poweroff"))
+		kernel_power_off();
+	else if (!strcmp(kunit_shutdown, "halt"))
+		kernel_halt();
+	else if (!strcmp(kunit_shutdown, "reboot"))
+		kernel_restart(NULL);
+
+}