linux-kernel - [PATCH 1/3] [v2] drm/xe/kunit: fix link failure with built-in xe

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Date: Mon, 26 Feb 2024 13:46:36 +0100
From: Arnd Bergmann <arnd@...nel.org>
To: Lucas De Marchi <lucas.demarchi@...el.com>,
	Oded Gabbay <ogabbay@...nel.org>,
	Thomas Hellström <thomas.hellstrom@...ux.intel.com>
Cc: Arnd Bergmann <arnd@...db.de>,
	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>,
	Rodrigo Vivi <rodrigo.vivi@...el.com>,
	Matthew Brost <matthew.brost@...el.com>,
	Jani Nikula <jani.nikula@...el.com>,
	Matt Roper <matthew.d.roper@...el.com>,
	intel-xe@...ts.freedesktop.org,
	dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 1/3] [v2] drm/xe/kunit: fix link failure with built-in xe

From: Arnd Bergmann <arnd@...db.de>

When the driver is built-in but the tests are in loadable modules,
the helpers don't actually get put into the driver:

ERROR: modpost: "xe_kunit_helper_alloc_xe_device" [drivers/gpu/drm/xe/tests/xe_test.ko] undefined!

Change the Makefile to ensure they are always part of the driver
even when the rest of the kunit tests are in loadable modules.

Fixes: 5095d13d758b ("drm/xe/kunit: Define helper functions to allocate fake xe device")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
v2: don't remove KUNIT dependency
---
 drivers/gpu/drm/xe/Kconfig       | 1 +
 drivers/gpu/drm/xe/Kconfig.debug | 1 -
 drivers/gpu/drm/xe/Makefile      | 6 ++++--
 3 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/xe/Kconfig b/drivers/gpu/drm/xe/Kconfig
index 6d4428b19a4c..c3a3b204ae5b 100644
--- a/drivers/gpu/drm/xe/Kconfig
+++ b/drivers/gpu/drm/xe/Kconfig
@@ -11,6 +11,7 @@ config DRM_XE
 	select DRM_BUDDY
 	select DRM_EXEC
 	select DRM_KMS_HELPER
+	select DRM_KUNIT_TEST_HELPERS if DRM_XE_KUNIT_TEST != n
 	select DRM_PANEL
 	select DRM_SUBALLOC_HELPER
 	select DRM_DISPLAY_DP_HELPER
diff --git a/drivers/gpu/drm/xe/Kconfig.debug b/drivers/gpu/drm/xe/Kconfig.debug
index 549065f57a78..df02e5d17d26 100644
--- a/drivers/gpu/drm/xe/Kconfig.debug
+++ b/drivers/gpu/drm/xe/Kconfig.debug
@@ -76,7 +76,6 @@ config DRM_XE_KUNIT_TEST
 	depends on DRM_XE && KUNIT && DEBUG_FS
 	default KUNIT_ALL_TESTS
 	select DRM_EXPORT_FOR_TESTS if m
-	select DRM_KUNIT_TEST_HELPERS
 	help
 	  Choose this option to allow the driver to perform selftests under
 	  the kunit framework
diff --git a/drivers/gpu/drm/xe/Makefile b/drivers/gpu/drm/xe/Makefile
index 4c6ffe4b2172..b596e4482a9b 100644
--- a/drivers/gpu/drm/xe/Makefile
+++ b/drivers/gpu/drm/xe/Makefile
@@ -158,8 +158,10 @@ xe-$(CONFIG_PCI_IOV) += \
 	xe_lmtt_2l.o \
 	xe_lmtt_ml.o
 
-xe-$(CONFIG_DRM_XE_KUNIT_TEST) += \
-	tests/xe_kunit_helpers.o
+# include helpers for tests even when XE is built-in
+ifdef CONFIG_DRM_XE_KUNIT_TEST
+xe-y += tests/xe_kunit_helpers.o
+endif
 
 # i915 Display compat #defines and #includes
 subdir-ccflags-$(CONFIG_DRM_XE_DISPLAY) += \
-- 
2.39.2