drm/amd/display: Enable gcov coverage for amdgpu_dm KUnit builds

[Why & How]
Add GCOV_PROFILE := y to amdgpu_dm/Makefile under the
CONFIG_DRM_AMD_DC_KUNIT_TEST guard so coverage instrumentation
is only applied during KUnit builds, not all amdgpu_dm builds.

Add coverage config options (CONFIG_GCOV, CONFIG_DEBUG_INFO,
CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT, CONFIG_DEBUG_KERNEL)
to tests/.kunitconfig so the kunit.py runner enables the kernel
coverage configuration automatically.

Assisted-by: Copilot:Claude-Sonnet-4.6
Reviewed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Ray Wu <ray.wu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/Makefile b/drivers/gpu/drm/amd/display/amdgpu_dm/Makefile
index 914f89af047c11c2ba5da2ddb003ec535bb5d496..54a93e4255b361479fa10186f22c9f5e0c773376 100644 (file)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/Makefile
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/Makefile
@@ -63,4 +63,7 @@ endif
 # KUnit tests as separate module
 ifneq ($(CONFIG_DRM_AMD_DC_KUNIT_TEST),)
 obj-y += $(AMDDALPATH)/amdgpu_dm/tests/
+
+# Enable gcov for amdgpu_dm KUnit builds
+GCOV_PROFILE := y
 endif

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/tests/.kunitconfig b/drivers/gpu/drm/amd/display/amdgpu_dm/tests/.kunitconfig
index 36676326ade4358c13348b978131df3b0b78da42..a0949d3c4e6f724676a2a0205fd85f6afc61f089 100644 (file)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/tests/.kunitconfig
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/tests/.kunitconfig
@@ -12,3 +12,9 @@ CONFIG_HWMON=y
 CONFIG_I2C=y
 CONFIG_POWER_SUPPLY=y
 CONFIG_CRC16=y
+
+# GCOV Coverage - see tools/testing/kunit/configs/coverage_uml.config
+CONFIG_DEBUG_KERNEL=y
+CONFIG_DEBUG_INFO=y
+CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT=y
+CONFIG_GCOV=y