linux-kernel - [PATCH 2/2] drm/exec: add test case for using a drm

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Message-Id: <20230731123625.3766-2-christian.koenig@amd.com>
Date:   Mon, 31 Jul 2023 14:36:25 +0200
From:   "Christian König" 
        <ckoenig.leichtzumerken@...il.com>
To:     boris.brezillon@...labora.com, ndesaulniers@...gle.com,
        maarten.lankhorst@...ux.intel.com, mripard@...nel.org,
        tzimmermann@...e.de, airlied@...il.com, daniel@...ll.ch,
        trix@...hat.com, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, llvm@...ts.linux.dev,
        naresh.kamboju@...aro.org, dakr@...hat.com
Subject: [PATCH 2/2] drm/exec: add test case for using a drm_exec multiple times

Not really a common use case, but let's make sure that we don't
accidentially break that somehow.

CC: Boris Brezillon <boris.brezillon@...labora.com>
Signed-off-by: Christian König <christian.koenig@....com>
---
 drivers/gpu/drm/tests/drm_exec_test.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/drivers/gpu/drm/tests/drm_exec_test.c b/drivers/gpu/drm/tests/drm_exec_test.c
index 727ac267682e..7b0238c5d9fa 100644
--- a/drivers/gpu/drm/tests/drm_exec_test.c
+++ b/drivers/gpu/drm/tests/drm_exec_test.c
@@ -138,6 +138,26 @@ static void test_prepare_array(struct kunit *test)
 	drm_exec_fini(&exec);
 }
 
+static void test_multiple_loops(struct kunit *test)
+{
+	struct drm_exec exec;
+
+	drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT);
+	drm_exec_until_all_locked(&exec)
+	{
+		break;
+	}
+	drm_exec_fini(&exec);
+
+	drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT);
+	drm_exec_until_all_locked(&exec)
+	{
+		break;
+	}
+	drm_exec_fini(&exec);
+	KUNIT_SUCCEED(test);
+}
+
 static struct kunit_case drm_exec_tests[] = {
 	KUNIT_CASE(sanitycheck),
 	KUNIT_CASE(test_lock),
@@ -145,6 +165,7 @@ static struct kunit_case drm_exec_tests[] = {
 	KUNIT_CASE(test_duplicates),
 	KUNIT_CASE(test_prepare),
 	KUNIT_CASE(test_prepare_array),
+	KUNIT_CASE(test_multiple_loops),
 	{}
 };
 
-- 
2.34.1