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2020-03-13Merge tag 'amd-drm-next-5.7-2020-03-10' of ↵Dave Airlie1-1/+2
git://people.freedesktop.org/~agd5f/linux into drm-next amd-drm-next-5.7-2020-03-10: amdgpu: - SR-IOV fixes - Fix up fallout from drm load/unload callback removal - Navi, renoir power management watermark fixes - Refactor smu parameter handling - Display FEC fixes - Display DCC fixes - HDCP fixes - Add support for USB-C PD firmware updates - Pollock detection fix - Rework compute ring priority handling - RAS fixes - Misc cleanups amdkfd: - Consolidate more gfx config details in amdgpu - Consolidate bo alloc flags - Improve code comments - SDMA MQD fixes - Misc cleanups gpu scheduler: - Add suport for modifying the sched list uapi: - Clarify comments about GEM_CREATE flags that are not used by userspace. The kernel driver has always prevented userspace from using these. They are only used internally in the kernel driver. Signed-off-by: Dave Airlie <[email protected]> From: Alex Deucher <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2020-03-10drm/amdgpu: Correct the condition of warning while bo releasexinhui pan1-1/+2
Only kernel bo has kfd eviction fence. This warning is to give a notice that kfd only remove eviction fence on individual bos. Tested-by: Nicholas Johnson <[email protected]> Reviewed-by: Christian König <[email protected]> Signed-off-by: xinhui pan <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2020-03-04Merge drm/drm-next into drm-misc-nextMaxime Ripard1-6/+33
Daniel needs a few commits from drm-next. Signed-off-by: Maxime Ripard <[email protected]>
2020-02-27drm/amdgpu: implement amdgpu_gem_prime_move_notify v2Christian König1-0/+6
Implement the importer side of unpinned DMA-buf handling. v2: update page tables immediately Signed-off-by: Christian König <[email protected]> Acked-by: Daniel Vetter <[email protected]> Link: https://patchwork.freedesktop.org/patch/353998/?series=73646&rev=1
2020-02-27drm/amdgpu: add amdgpu_dma_buf_pin/unpin v2Christian König1-0/+5
This implements the exporter side of unpinned DMA-buf handling. v2: fix minor coding style issues Signed-off-by: Christian König <[email protected]> Acked-by: Daniel Vetter <[email protected]> Link: https://patchwork.freedesktop.org/patch/353999/?series=73646&rev=1
2020-02-26drm/amdgpu: Remove kfd eviction fence before release bo (v2)xinhui pan1-0/+5
No need to trigger eviction as the memory mapping will not be used anymore. All pt/pd bos share same resv, hence the same shared eviction fence. Everytime page table is freed, the fence will be signled and that cuases kfd unexcepted evictions. v2: squash in 32 bit fix CC: Christian König <[email protected]> CC: Felix Kuehling <[email protected]> CC: Alex Deucher <[email protected]> Acked-by: Christian König <[email protected]> Reviewed-by: Felix Kuehling <[email protected]> Signed-off-by: xinhui pan <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2020-02-04drm/amdgpu: rework synchronization of VM updates v4Christian König1-7/+28
If provided we only sync to the BOs reservation object and no longer to the root PD. v2: update comment, cleanup amdgpu_bo_sync_wait_resv v3: use correct reservation object while clearing v4: fix typo in amdgpu_bo_sync_wait_resv Signed-off-by: Christian König <[email protected]> Tested-by: Tom St Denis <[email protected]> Reviewed-by: Felix Kuehling <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2020-02-04drm/amdgpu: rework job synchronization v2Christian König1-1/+2
For unlocked page table updates we need to be able to sync to fences of a specific VM. v2: use SYNC_ALWAYS in the UVD code Signed-off-by: Christian König <[email protected]> Reviewed-by: Felix Kuehling <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2019-10-30Merge tag 'drm-misc-next-2019-10-24-2' of ↵Dave Airlie1-1/+4
git://anongit.freedesktop.org/drm/drm-misc into drm-next drm-misc-next for 5.5: UAPI Changes: -syncobj: allow querying the last submitted timeline value (David) -fourcc: explicitly defineDRM_FORMAT_BIG_ENDIAN as unsigned (Adam) -omap: revert the OMAP_BO_* flags that were added -- no userspace (Sean) Cross-subsystem Changes: -MAINTAINERS: add Mihail as komeda co-maintainer (Mihail) Core Changes: -edid: a few cleanups, add AVI infoframe bar info (Ville) -todo: remove i915 device_link item and add difficulty levels (Daniel) -dp_helpers: add a few new helpers to parse dpcd (Thierry) Driver Changes: -gma500: fix a few memory disclosure leaks (Kangjie) -qxl: convert to use the new drm_gem_object_funcs.mmap (Gerd) -various: open code dp_link helpers in preparation for helper removal (Thierry) Cc: Chunming Zhou <[email protected]> Cc: Adam Jackson <[email protected]> Cc: Sean Paul <[email protected]> Cc: Ville Syrjälä <[email protected]> Cc: Kangjie Lu <[email protected]> Cc: Mihail Atanassov <[email protected]> Cc: Daniel Vetter <[email protected]> Cc: Thierry Reding <[email protected]> Signed-off-by: Dave Airlie <[email protected]> From: Sean Paul <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/20191024155535.GA10294@art_vandelay
2019-10-17drm/ttm: rename ttm_fbdev_mmapGerd Hoffmann1-1/+4
Rename ttm_fbdev_mmap to ttm_bo_mmap_obj. Move the vm_pgoff sanity check to amdgpu_bo_fbdev_mmap (only ttm_fbdev_mmap user in tree). The ttm_bo_mmap_obj function can now be used to map any buffer object. This allows to implement &drm_gem_object_funcs.mmap in gem ttm helpers. v3: patch added to series Signed-off-by: Gerd Hoffmann <[email protected]> Acked-by: Thomas Zimmermann <[email protected]> Reviewed-by: Christian König <[email protected]> Acked-by: Daniel Vetter <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-10-15drm/amdgpu: fix potential VM faultsChristian König1-1/+2
When we allocate new page tables under memory pressure we should not evict old ones. Signed-off-by: Christian König <[email protected]> Acked-by: Alex Deucher <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2019-10-03drm/amdgpu: once more fix amdgpu_bo_create_kernel_atChristian König1-3/+6
When CPU access is needed we should tell that to amdgpu_bo_create_reserved() or otherwise the access is denied later on. Signed-off-by: Christian König <[email protected]> Reviewed-by: Emily Deng <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2019-09-17drm/amdgpu: cleanup creating BOs at fixed location (v2)Christian König1-0/+61
The placement is something TTM/BO internal and the RAS code should avoid touching that directly. Add a helper to create a BO at a fixed location and use that instead. v2: squash in fixes (Alex) Signed-off-by: Christian König <[email protected]> Reviewed-by: Guchun Chen <[email protected]> Reviewed-by: Alex Deucher <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2019-09-16drm/amdgpu: allocate PDs/PTs with no_gpu_wait in a page faultChristian König1-1/+1
While handling a page fault we can't wait for other ongoing GPU operations or we can potentially run into deadlocks. Signed-off-by: Christian König <[email protected]> Reviewed-by: Felix Kuehling <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2019-08-27Merge tag 'drm-next-5.4-2019-08-23' of ↵Dave Airlie1-2/+3
git://people.freedesktop.org/~agd5f/linux into drm-next drm-next-5.4-2019-08-23: amdgpu: - Enable power features on Navi12 - Enable power features on Arcturus - RAS updates - Initial Renoir APU support - Enable power featyres on Renoir - DC gamma fixes - DCN2 fixes - GPU reset support for Picasso - Misc cleanups and fixes scheduler: - Possible race fix Signed-off-by: Dave Airlie <[email protected]> From: Alex Deucher <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-08-21drm/amdgpu/psp: move TMR to cpu invisible vram regionTianci.Yin1-2/+3
so that more visible vram can be available for umd. Reviewed-by: Christian König <[email protected]>. Signed-off-by: Tianci.Yin <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2019-08-21Merge tag 'drm-misc-next-2019-08-19' of ↵Dave Airlie1-11/+11
git://anongit.freedesktop.org/drm/drm-misc into drm-next drm-misc-next for 5.4: UAPI Changes: Cross-subsystem Changes: Core Changes: - dma-buf: add reservation_object_fences helper, relax reservation_object_add_shared_fence, remove reservation_object seq number (and then restored) - dma-fence: Shrinkage of the dma_fence structure, Merge dma_fence_signal and dma_fence_signal_locked, Store the timestamp in struct dma_fence in a union with cb_list Driver Changes: - More dt-bindings YAML conversions - More removal of drmP.h includes - dw-hdmi: Support get_eld and various i2s improvements - gm12u320: Few fixes - meson: Global cleanup - panfrost: Few refactors, Support for GPU heap allocations - sun4i: Support for DDC enable GPIO - New panels: TI nspire, NEC NL8048HL11, LG Philips LB035Q02, Sharp LS037V7DW01, Sony ACX565AKM, Toppoly TD028TTEC1 Toppoly TD043MTEA1 Signed-off-by: Dave Airlie <[email protected]> [airlied: fixup dma_resv rename fallout] From: Maxime Ripard <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/20190819141923.7l2adietcr2pioct@flea
2019-08-13dma-buf: rename reservation_object to dma_resvChristian König1-9/+9
Be more consistent with the naming of the other DMA-buf objects. Signed-off-by: Christian König <[email protected]> Reviewed-by: Chris Wilson <[email protected]> Link: https://patchwork.freedesktop.org/patch/323401/
2019-08-12Merge tag 'drm-next-5.4-2019-08-09' of ↵Dave Airlie1-29/+71
git://people.freedesktop.org/~agd5f/linux into drm-next drm-next-5.4-2019-08-09: Same as drm-next-5.4-2019-08-06, but with the readq/writeq stuff fixed and 5.3-rc3 backmerged. amdgpu: - Add navi14 support - Add navi12 support - Add Arcturus support - Enable mclk DPM for Navi - Misc DC display fixes - Add perfmon support for DF - Add scatter/gather display support for Raven - Improve SMU handling for GPU reset - RAS support for GFX - Drop last of drmP.h - Add support for wiping memory on buffer release - Allow cursor async updates for fb swaps - Misc fixes and cleanups amdkfd: - Add navi14 support - Add navi12 support - Add Arcturus support - CWSR trap handlers updates for gfx9, 10 - Drop last of drmP.h - Update MAINTAINERS radeon: - Misc fixes and cleanups - Make kexec more reliable by tearing down the GPU ttm: - Add release_notify callback uapi: - Add wipe memory on release flag for buffer creation Signed-off-by: Dave Airlie <[email protected]> [airlied: resolved conflicts with ttm resv moving] From: Alex Deucher <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-08-06drm/amdgpu: switch driver from bo->resv to bo->base.resvGerd Hoffmann1-12/+10
Signed-off-by: Gerd Hoffmann <[email protected]> Reviewed-by: Christian König <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-08-06drm/amdgpu: use embedded gem objectGerd Hoffmann1-5/+5
Drop drm_gem_object from amdgpu_bo, use the ttm_buffer_object.base instead. Build tested only. Signed-off-by: Gerd Hoffmann <[email protected]> Reviewed-by: Christian König <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-08-05dma-buf: add more reservation object locking wrappersChristian König1-3/+3
Complete the abstraction of the ww_mutex inside the reservation object. This allows us to add more handling and debugging to the reservation object in the future. Signed-off-by: Christian König <[email protected]> Reviewed-by: Chris Wilson <[email protected]> Link: https://patchwork.freedesktop.org/patch/320761/
2019-08-02drm/amdgpu: Implement VRAM wipe on releaseFelix Kuehling1-3/+36
Wipe VRAM memory containing sensitive data when moving or releasing BOs. Clearing the memory is pipelined to minimize any impact on subsequent memory allocation latency. Use of a poison value should help debug future use-after-free bugs. When moving BOs, the existing ttm_bo_pipelined_move ensures that the memory won't be reused before being wiped. When releasing BOs, the BO is fenced with the memory fill operation, which results in queuing the BO for a delayed delete. v2: Move amdgpu_amdkfd_unreserve_memory_limit into amdgpu_bo_release_notify so that KFD can use memory that's still being cleared in the background Signed-off-by: Felix Kuehling <[email protected]> Reviewed-by: Christian König <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2019-07-31drm/amdgpu: Fill out gem_object->resvDaniel Vetter1-0/+2
That way we can ditch our gem_prime_res_obj implementation. Since ttm absolutely needs the right reservation object all the boilerplate is already there and we just have to wire it up correctly. Note that gem/prime doesn't care when we do this, as long as we do it before the bo is registered and someone can call the handle2fd ioctl on it. Aside: ttm_buffer_object.ttm_resv could probably be ditched in favour of always passing a non-NULL resv to ttm_bo_init(). At least for gem drivers that would avoid having two of these, on in ttm_buffer_object and the other in drm_gem_object, one just there for confusion. Acked-by: Gerd Hoffmann <[email protected]> Cc: Gerd Hoffmann <[email protected]> Reviewed-by: Emil Velikov <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> Cc: Alex Deucher <[email protected]> Cc: "Christian König" <[email protected]> Cc: Daniel Vetter <[email protected]> Cc: "Michel Dänzer" <[email protected]> Cc: Chris Wilson <[email protected]> Cc: Huang Rui <[email protected]> Cc: Felix Kuehling <[email protected]> Cc: Andrey Grodzovsky <[email protected]> Cc: Evan Quan <[email protected]> Cc: Sonny Jiang <[email protected]> Cc: Amber Lin <[email protected]> Cc: "Michał Mirosław" <[email protected]> Cc: Junwei Zhang <[email protected]> Cc: Thomas Zimmermann <[email protected]> Cc: Samuel Li <[email protected]> Reviewed-by: Christian König <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-07-30drm/amdgpu: Create helper to clear AMDGPU_GEM_CREATE_CPU_GTT_USWCAndrey Grodzovsky1-26/+35
Move the logic to clear AMDGPU_GEM_CREATE_CPU_GTT_USWC in amdgpu_bo_do_create into standalone helper so it can be reused in other functions. v4: Switch to return bool. v5: Fix typos. Signed-off-by: Andrey Grodzovsky <[email protected]> Acked-by: Michel Dänzer <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2019-06-25Merge branch 'drm-next' into drm-next-5.3Alex Deucher1-1/+1
Backmerge drm-next and fix up conflicts due to drmP.h removal. Signed-off-by: Alex Deucher <[email protected]>
2019-06-20drm/amdgpu: Add GDDR6 in vram_name arraryHawking Zhang1-0/+1
For printing vram type. Signed-off-by: Hawking Zhang <[email protected]> Reviewed-by: Tao Zhou <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2019-06-11drm/amdgpu: create GDS, GWS and OA in system domainChristian König1-1/+5
And only move them in on validation. This allows for better control when multiple processes are fighting over those resources. Signed-off-by: Christian König <[email protected]> Reviewed-by: Chunming Zhou <[email protected]> Tested-by: Pierre-Eric Pelloux-Prayer <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2019-06-10drm/amd: drop use of drmP.h in amdgpu/amdgpu*Sam Ravnborg1-1/+1
Drop use of drmP.h in all files named amdgpu* in drm/amd/amdgpu/ Fix fallout. Signed-off-by: Sam Ravnborg <[email protected]> Reviewed-by: Alex Deucher <[email protected]> Cc: "Christian König" <[email protected]> Cc: "David (ChunMing) Zhou" <[email protected]> Cc: David Airlie <[email protected]> Cc: Daniel Vetter <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-04-19drm/amdgpu: amdgpu_device_recover_vram got NULL of shadow->parentwentalou1-1/+3
amdgpu_bo_destroy had a bug by calling amdgpu_bo_unref outside mutex_lock. If amdgpu_device_recover_vram executed between amdgpu_bo_unref and list_del_init, it would get NULL of shadow->parent, then caused Call Trace and GPU reset failed. Signed-off-by: Wentao Lou <[email protected]> Reviewed-by: Christian König <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2019-02-13drm/amdgpu: Add helper to wait for BO fences using a sync objectFelix Kuehling1-0/+24
Creates a temporary sync object to wait for the BO reservation. This generalizes amdgpu_vm_wait_pd. Signed-off-by: Felix Kuehling <[email protected]> Reviewed-by: Christian König <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2019-02-01drm/amdgpu: clean up memory/GDS/GWS/OA alignment codeMarek Olšák1-4/+12
- move all adjustments into one place - specify GDS/GWS/OA alignment in basic units of the heaps - it looks like GDS alignment was 1 instead of 4 Signed-off-by: Marek Olšák <[email protected]> Reviewed-by: Christian König <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2018-12-14drm/amdgpu: WARN once if amdgpu_bo_unpin is called for an unpinned BOMichel Dänzer1-1/+1
It indicates a pin/unpin imbalance bug somewhere. While the bug isn't necessarily in the call chain hitting this, it's at least one part involved. Reviewed-by: Alex Deucher <[email protected]> Signed-off-by: Michel Dänzer <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2018-12-07drm/amdgpu: Add KFD VRAM limit checkingFelix Kuehling1-1/+1
We don't want KFD processes evicting each other over VRAM usage. Therefore prevent overcommitting VRAM among KFD applications with a per-GPU limit. Also leave enough room for page tables on top of the application memory usage. Acked-by: Alex Deucher <[email protected]> Signed-off-by: Felix Kuehling <[email protected]> Reviewed-by: Eric Huang <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2018-12-03drm/amdgpu: remove amdgpu_bo_backup_to_shadowChristian König1-47/+0
It is unused. Signed-off-by: Christian König <[email protected]> Reviewed-by: Alex Deucher <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2018-10-25dma-buf: allow reserving more than one shared fence slotChristian König1-1/+1
Let's support simultaneous submissions to multiple engines. Signed-off-by: Christian König <[email protected]> Reviewed-by: Michel Dänzer <[email protected]> Reviewed-by: Junwei Zhang <[email protected]> Reviewed-by: Huang Rui <[email protected]> Link: https://patchwork.kernel.org/patch/10626149/
2018-09-19drm/amdgpu: fix up GDS/GWS/OA shiftingChristian König1-1/+5
That only worked by pure coincident. Completely remove the shifting and always apply correct PAGE_SHIFT. Signed-off-by: Christian König <[email protected]> Acked-by: Alex Deucher <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2018-09-19drm/amdgpu: fix shadow BO restoringChristian König1-33/+13
Don't grab the reservation lock any more and simplify the handling quite a bit. Signed-off-by: Christian König <[email protected]> Reviewed-by: Huang Rui <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2018-09-19drm/amdgpu: shadow BOs don't need any alignmentChristian König1-3/+2
They aren't directly used by the hardware. Signed-off-by: Christian König <[email protected]> Reviewed-by: Junwei Zhang <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2018-09-19drm/amdgpu: always enable shadow BOs v2Christian König1-13/+1
Even when GPU recovery is disabled we could run into a manually triggered recovery. v2: keep accidental removed comments Signed-off-by: Christian König <[email protected]> Acked-by: Emily Deng <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2018-09-19drm/amdgpu: stop pipelining VM PDs/PTs movesChristian König1-1/+1
We are going to need this for recoverable page fault handling and it makes shadow handling during GPU reset much more easier. Signed-off-by: Christian König <[email protected]> Acked-by: Junwei Zhang <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2018-09-19drm/amd/amdgpu: Avoid fault when allocating an empty buffer objectTom St Denis1-1/+2
Signed-off-by: Tom St Denis <[email protected]> Reviewed-by: Christian König <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2018-09-19drm/amdgpu: don't allocate zero sized kernel BOsChristian König1-0/+5
Just free the BO if the size should be zero. Signed-off-by: Christian König <[email protected]> Reviewed-by: Alex Deucher <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2018-09-13drm/amdgpu: use a single linked list for amdgpu_vm_bo_baseChristian König1-1/+1
Instead of the double linked list. Gets the size of amdgpu_vm_pt down to 64 bytes again. We could even reduce it down to 32 bytes, but that would require some rather extreme hacks. Signed-off-by: Christian König <[email protected]> Reviewed-by: Chunming Zhou <[email protected]> Acked-by: Felix Kuehling <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2018-09-10drm/amdgpu: manually map the shadow BOs againChristian König1-4/+1
Otherwise we won't be able to use the AGP aperture. Signed-off-by: Christian König <[email protected]> Reviewed-by: Junwei Zhang <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2018-09-10drm/amdgpu: correctly sign extend 48bit addresses v3Christian König1-1/+1
Correct sign extend the GMC addresses to 48bit. v2: sign extending turned out easier than thought. v3: clean up the defines and move them into amdgpu_gmc.h as well Signed-off-by: Christian König <[email protected]> Reviewed-by: Junwei Zhang <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2018-08-29drm/amdgpu: distinct between allocated GART space and GMC addrChristian König1-2/+0
Most of the time we only need to know if the BO has a valid GMC addr. Signed-off-by: Christian König <[email protected]> Reviewed-by: Junwei Zhang <[email protected]> Acked-by: Felix Kuehling <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2018-08-27drm/amdgpu: Do not evict VRAM on APUs with disabled HIBERNATEPaul Menzel1-1/+3
Improve commit d796d844 (drm/radeon/kms: make hibernate work on IGPs) to only migrate VRAM objects if the Linux kernel is actually built with support for hibernation (suspend to disk). The better solution is to get the information, if this is suspend or hibernate, from `amdgpu_device_suspend()`, but that’s more involved, so apply the simple solution first. Link: https://bugs.freedesktop.org/show_bug.cgi?id=107277 Signed-off-by: Paul Menzel <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2018-07-31drm/amdgpu: Replace ttm_bo_unref with ttm_bo_putThomas Zimmermann1-3/+2
The function ttm_bo_put releases a reference to a TTM buffer object. The function's name is more aligned to the Linux kernel convention of naming ref-counting function _get and _put. A call to ttm_bo_unref takes the address of the TTM BO object's pointer and clears the pointer's value to NULL. This is not necessary in most cases and sometimes even worked around by the calling code. A call to ttm_bo_put only releases the reference without clearing the pointer. The current behaviour of cleaning the pointer is kept in the calling code, but should be removed if not required in a later patch. v2: * set prefix to drm/amdgpu Signed-off-by: Thomas Zimmermann <[email protected]> Reviewed-by: Christian König <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
2018-07-31drm/amdgpu: Replace ttm_bo_reference with ttm_bo_getThomas Zimmermann1-1/+1
The function ttm_bo_get acquires a reference on a TTM buffer object. The function's name is more aligned to the Linux kernel convention of naming ref-counting function _get and _put. v2: * changed prefix to drm/amdgpu Signed-off-by: Thomas Zimmermann <[email protected]> Reviewed-by: Christian König <[email protected]> Signed-off-by: Alex Deucher <[email protected]>
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