Documentation/gpu/amdgpu/ras.rst
Source file repositories/reference/linux-study-clean/Documentation/gpu/amdgpu/ras.rst
File Facts
- System
- Linux kernel
- Corpus path
Documentation/gpu/amdgpu/ras.rst- Extension
.rst- Size
- 1795 bytes
- Lines
- 63
- Domain
- Support Tooling And Documentation
- Bucket
- Documentation
- Inferred role
- Support Tooling And Documentation: documentation
- Status
- atlas-only
Why This File Exists
Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
- Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
Dependency Surface
- No C-style include directives detected by the generator.
Detected Declarations
- No top-level syscall, struct, function, initcall, or export declaration detected by the generator.
Annotated Snippet
====================
AMDGPU RAS Support
====================
The AMDGPU RAS interfaces are exposed via sysfs (for informational queries) and
debugfs (for error injection).
RAS debugfs/sysfs Control and Error Injection Interfaces
========================================================
.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
:doc: AMDGPU RAS debugfs control interface
RAS Reboot Behavior for Unrecoverable Errors
============================================
.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
:doc: AMDGPU RAS Reboot Behavior for Unrecoverable Errors
RAS Error Count sysfs Interface
===============================
.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
:doc: AMDGPU RAS sysfs Error Count Interface
RAS EEPROM debugfs Interface
============================
.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
:doc: AMDGPU RAS debugfs EEPROM table reset interface
RAS VRAM Bad Pages sysfs Interface
==================================
.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
:doc: AMDGPU RAS sysfs gpu_vram_bad_pages Interface
Sample Code
===========
Sample code for testing error injection can be found here:
https://cgit.freedesktop.org/mesa/drm/tree/tests/amdgpu/ras_tests.c
This is part of the libdrm amdgpu unit tests which cover several areas of the GPU.
There are four sets of tests:
RAS Basic Test
The test verifies the RAS feature enabled status and makes sure the necessary sysfs and debugfs files
are present.
RAS Query Test
This test checks the RAS availability and enablement status for each supported IP block as well as
the error counts.
RAS Inject Test
This test injects errors for each IP.
RAS Disable Test
This test tests disabling of RAS features for each IP block.Annotation
- Atlas domain: Support Tooling And Documentation / Documentation.
- Implementation status: atlas-only.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.