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Message-ID: <20231129221412.1180549-3-michal.winiarski@intel.com>
Date: Wed, 29 Nov 2023 23:14:12 +0100
From: Michał Winiarski <michal.winiarski@...el.com>
To: <intel-xe@...ts.freedesktop.org>,
<dri-devel@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>
CC: Rodrigo Vivi <rodrigo.vivi@...el.com>,
Michal Wajdeczko <michal.wajdeczko@...el.com>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Maxime Ripard <mripard@...nel.org>,
Thomas Zimmermann <tzimmermann@...e.de>,
David Airlie <airlied@...il.com>,
Daniel Vetter <daniel@...ll.ch>,
Javier Martinez Canillas <javierm@...hat.com>,
Maíra Canal <mcanal@...lia.com>,
Michał Winiarski <michal.winiarski@...el.com>
Subject: [PATCH 2/2] drm/tests: managed: Add a simple test for drmm_managed_release
Add a simple test that checks whether the action is indeed called right
away and that it is not called on the final drm_dev_put().
Signed-off-by: Michał Winiarski <michal.winiarski@...el.com>
---
drivers/gpu/drm/tests/drm_managed_test.c | 65 ++++++++++++++++++------
1 file changed, 50 insertions(+), 15 deletions(-)
diff --git a/drivers/gpu/drm/tests/drm_managed_test.c b/drivers/gpu/drm/tests/drm_managed_test.c
index 1652dca11d30c..a645ea42aee56 100644
--- a/drivers/gpu/drm/tests/drm_managed_test.c
+++ b/drivers/gpu/drm/tests/drm_managed_test.c
@@ -12,6 +12,8 @@
#define TEST_TIMEOUT_MS 100
struct managed_test_priv {
+ struct drm_device *drm;
+ struct device *dev;
bool action_done;
wait_queue_head_t action_wq;
};
@@ -26,42 +28,75 @@ static void drm_action(struct drm_device *drm, void *ptr)
static void drm_test_managed_run_action(struct kunit *test)
{
- struct managed_test_priv *priv;
- struct drm_device *drm;
- struct device *dev;
+ struct managed_test_priv *priv = test->priv;
int ret;
- priv = kunit_kzalloc(test, sizeof(*priv), GFP_KERNEL);
- KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv);
- init_waitqueue_head(&priv->action_wq);
+ ret = drmm_add_action_or_reset(priv->drm, drm_action, priv);
+ KUNIT_EXPECT_EQ(test, ret, 0);
- dev = drm_kunit_helper_alloc_device(test);
- KUNIT_ASSERT_NOT_ERR_OR_NULL(test, dev);
+ ret = drm_dev_register(priv->drm, 0);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ drm_dev_unregister(priv->drm);
+ drm_kunit_helper_free_device(test, priv->dev);
- drm = __drm_kunit_helper_alloc_drm_device(test, dev, sizeof(*drm), 0, DRIVER_MODESET);
- KUNIT_ASSERT_NOT_ERR_OR_NULL(test, drm);
+ ret = wait_event_interruptible_timeout(priv->action_wq, priv->action_done,
+ msecs_to_jiffies(TEST_TIMEOUT_MS));
+ KUNIT_EXPECT_GT(test, ret, 0);
+}
- ret = drmm_add_action_or_reset(drm, drm_action, priv);
+static void drm_test_managed_release_action(struct kunit *test)
+{
+ struct managed_test_priv *priv = test->priv;
+ int ret;
+
+ ret = drmm_add_action_or_reset(priv->drm, drm_action, priv);
KUNIT_EXPECT_EQ(test, ret, 0);
- ret = drm_dev_register(drm, 0);
+ ret = drm_dev_register(priv->drm, 0);
KUNIT_ASSERT_EQ(test, ret, 0);
- drm_dev_unregister(drm);
- drm_kunit_helper_free_device(test, dev);
+ drmm_release_action(priv->drm, drm_action, priv);
+ KUNIT_EXPECT_TRUE(test, priv->action_done);
+ priv->action_done = false;
+
+ drm_dev_unregister(priv->drm);
+ drm_kunit_helper_free_device(test, priv->dev);
ret = wait_event_interruptible_timeout(priv->action_wq, priv->action_done,
msecs_to_jiffies(TEST_TIMEOUT_MS));
- KUNIT_EXPECT_GT(test, ret, 0);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+}
+
+static int drm_managed_test_init(struct kunit *test)
+{
+ struct managed_test_priv *priv;
+
+ priv = kunit_kzalloc(test, sizeof(*priv), GFP_KERNEL);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv);
+ init_waitqueue_head(&priv->action_wq);
+
+ priv->dev = drm_kunit_helper_alloc_device(test);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv->dev);
+
+ priv->drm = __drm_kunit_helper_alloc_drm_device(test, priv->dev, sizeof(*priv->drm),
+ 0, DRIVER_MODESET);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv->drm);
+
+ test->priv = priv;
+
+ return 0;
}
static struct kunit_case drm_managed_tests[] = {
KUNIT_CASE(drm_test_managed_run_action),
+ KUNIT_CASE(drm_test_managed_release_action),
{}
};
static struct kunit_suite drm_managed_test_suite = {
.name = "drm-test-managed",
+ .init = drm_managed_test_init,
.test_cases = drm_managed_tests
};
--
2.43.0
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