[PATCH v2 00/12] Generate CPER records for RAS and commit to CPER ring

[Aravind Iddamsetty]

++ dri-devel

On 28-03-2025 15:57, Aravind Iddamsetty wrote:
> Hi,
>
> Based on the discussions around using Netlink for RAS purposes, as
> summarized in this blog post [1] by Dave Airlie. I had proposed a series
> regarding RAS infrastructure in DRM [2].
>
> I came across your work, which appears to address related areas and I'm
> particularly interested in understanding how it aligns with or could be
> adapted to the ongoing discussions around leveraging Netlink for RAS.
>
> Could you share your perspective on the potential integration of your
> efforts with Netlink? Do you foresee any challenges or opportunities in
> aligning with the approach discussed in the above-mentioned blog post
> and series?
>
> Looking forward to your insights and any additional thoughts you may
> have on this topic.
>
>
> [1]
> https://airlied.blogspot.com/2022/09/accelerators-bof-outcomes-summary.html
>
> [2]
> https://lore.kernel.org/all/20231020155835.1295524-1-aravind.iddamsetty@linux.intel.com/
>
>
> Thanks,
> Aravind.
> On 14-02-2025 13:37, Xiang Liu wrote:
>> This patch series generate RAS CPER records for UE/DE/CE/BP threshold exceed
>> event. SMU_TYPE_CE banks are combined into 1 CPER entry, they could be CEs or
>> DEs or both. UEs and BPs are encoded into separate CPER entries.
>>
>> RAS CPER records for CEs will be generated only after CEs count been queried.
>>
>> All records are committed to a pure software ring with a limit size, new records
>> will flush older records when overflow happened. User can access the records by
>> reading debugfs node, which is read-only.
>>
>> Hawking Zhang (5):
>>   drm/amd/include: Add amd cper header
>>   drm/amdgpu: Introduce funcs for populating CPER
>>   drm/amdgpu: Include ACA error type in aca bank
>>   drm/amdgpu: Introduce funcs for generating cper record
>>   drm/amdgpu: Generate cper records
>>
>> Tao Zhou (4):
>>   drm/amdgpu: add RAS CPER ring buffer
>>   drm/amdgpu: read CPER ring via debugfs
>>   drm/amdgpu: add data write function for CPER ring
>>   drm/amdgpu: add mutex lock for cper ring
>>
>> Xiang Liu (3):
>>   drm/amdgpu: Get timestamp from system time
>>   drm/amdgpu: Commit CPER entry
>>   drm/amdgpu: Generate bad page threshold cper records
>>
>>  drivers/gpu/drm/amd/amdgpu/Makefile        |   2 +-
>>  drivers/gpu/drm/amd/amdgpu/amdgpu.h        |   4 +
>>  drivers/gpu/drm/amd/amdgpu/amdgpu_aca.c    |  46 +-
>>  drivers/gpu/drm/amd/amdgpu/amdgpu_aca.h    |  16 +-
>>  drivers/gpu/drm/amd/amdgpu/amdgpu_cper.c   | 559 +++++++++++++++++++++
>>  drivers/gpu/drm/amd/amdgpu/amdgpu_cper.h   | 104 ++++
>>  drivers/gpu/drm/amd/amdgpu/amdgpu_device.c |   4 +
>>  drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c   |  91 +++-
>>  drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h   |   1 +
>>  drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c   |   2 +
>>  drivers/gpu/drm/amd/amdgpu/aqua_vanjaram.c |   3 +-
>>  drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c    |   2 +
>>  drivers/gpu/drm/amd/amdgpu/jpeg_v4_0_3.c   |   2 +
>>  drivers/gpu/drm/amd/amdgpu/mmhub_v1_8.c    |   2 +
>>  drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c   |   2 +
>>  drivers/gpu/drm/amd/amdgpu/umc_v12_0.c     |   1 +
>>  drivers/gpu/drm/amd/amdgpu/vcn_v4_0_3.c    |   2 +
>>  drivers/gpu/drm/amd/include/amd_cper.h     | 269 ++++++++++
>>  drivers/gpu/drm/amd/pm/amdgpu_dpm.c        |   3 +
>>  19 files changed, 1075 insertions(+), 40 deletions(-)
>>  create mode 100644 drivers/gpu/drm/amd/amdgpu/amdgpu_cper.c
>>  create mode 100644 drivers/gpu/drm/amd/amdgpu/amdgpu_cper.h
>>  create mode 100644 drivers/gpu/drm/amd/include/amd_cper.h
>>