Commit ba110db8 authored by Joel Fernandes's avatar Joel Fernandes Committed by Dave Airlie
Browse files

gpu: Move DRM buddy allocator one level up (part two) 



Move the DRM buddy allocator one level up so that it can be used by GPU
drivers (example, nova-core) that have usecases other than DRM (such as
VFIO vGPU support). Modify the API, structures and Kconfigs to use
"gpu_buddy" terminology. Adapt the drivers and tests to use the new API.

The commit cannot be split due to bisectability, however no functional
change is intended. Verified by running K-UNIT tests and build tested
various configurations.

Signed-off-by: default avatarJoel Fernandes <joelagnelf@nvidia.com>
Reviewed-by: default avatarDave Airlie <airlied@redhat.com>
[airlied: I've split this into two so git can find copies easier.
I've also just nuked drm_random library, that stuff needs to be done
elsewhere and only the buddy tests seem to be using it].
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent 4a9671a0

Documentation/gpu/drm-mm.rst

+6 −0
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@@ -532,6 +532,12 @@ Buddy Allocator Function References (GPU buddy) 
.. kernel-doc:: drivers/gpu/buddy.c

   :export:



DRM Buddy Specific Logging Function References

----------------------------------------------



.. kernel-doc:: drivers/gpu/drm/drm_buddy.c

   :export:



DRM Cache Handling and Fast WC memcpy()

=======================================

MAINTAINERS

+5 −3
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@@ -8797,15 +8797,17 @@ T: git https://gitlab.freedesktop.org/drm/misc/kernel.git 
F:	drivers/gpu/drm/ttm/

F:	include/drm/ttm/









DRM BUDDY ALLOCATOR









GPU BUDDY ALLOCATOR









M:	Matthew Auld <matthew.auld@intel.com>









M:	Arun Pravin <arunpravin.paneerselvam@amd.com>









R:	Christian Koenig <christian.koenig@amd.com>









L:	dri-devel@lists.freedesktop.org









S:	Maintained









T:	git https://gitlab.freedesktop.org/drm/misc/kernel.git









F:	drivers/gpu/drm/drm_buddy.c









F:	drivers/gpu/drm/tests/drm_buddy_test.c









F:	drivers/gpu/drm_buddy.c









F:	drivers/gpu/buddy.c









F:	drivers/gpu/tests/gpu_buddy_test.c









F:	include/linux/gpu_buddy.h









F:	include/drm/drm_buddy.h

















DRM AUTOMATED TESTING
































drivers/gpu/Kconfig
0 → 100644



+13
−0






























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# SPDX-License-Identifier: GPL-2.0



















config GPU_BUDDY









       bool









       help









         A page based buddy allocator for GPU memory.



















config GPU_BUDDY_KUNIT_TEST









       tristate "KUnit tests for GPU buddy allocator" if !KUNIT_ALL_TESTS









       depends on GPU_BUDDY && KUNIT









       default KUNIT_ALL_TESTS









       help









         KUnit tests for the GPU buddy allocator.
























drivers/gpu/Makefile



+1
−0






























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@@ -6,3 +6,4 @@ obj-y			+= host1x/ drm/ vga/ tests/







obj-$(CONFIG_IMX_IPUV3_CORE)	+= ipu-v3/









obj-$(CONFIG_TRACE_GPU_MEM)		+= trace/









obj-$(CONFIG_NOVA_CORE)		+= nova-core/









obj-$(CONFIG_GPU_BUDDY)		+= buddy.o
























drivers/gpu/buddy.c



+271
−285




























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