drivers/gpu/drm/amd/include/amdgpu_ptl.h

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/amd/include/amdgpu_ptl.h

Extension

.h

Size

2225 bytes

Lines

65

Domain

Driver Families

Bucket

drivers/gpu

Inferred role

Driver Families: implementation source

Status

source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

• Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

• struct amdgpu_ptl
• enum amdgpu_ptl_fmt
• enum amdgpu_ptl_disable_source

Annotated Snippet

struct amdgpu_ptl {
	enum amdgpu_ptl_fmt		fmt1;
	enum amdgpu_ptl_fmt		fmt2;
	bool				enabled;
	bool				hw_supported;
	bool				permanently_disabled;
	/* PTL disable reference counting */
	atomic_t			disable_ref;
	struct mutex			mutex;
	DECLARE_BITMAP(disable_bitmap, AMDGPU_PTL_DISABLE_MAX);
	bool				ptl_sysfs_created;
};

int amdgpu_ptl_perf_monitor_ctrl(struct amdgpu_device *adev, u32 req_code,
		u32 *ptl_state,
		enum amdgpu_ptl_fmt *fmt1,
		enum amdgpu_ptl_fmt *fmt2);

int amdgpu_ptl_sysfs_init(struct amdgpu_device *adev);
void amdgpu_ptl_sysfs_fini(struct amdgpu_device *adev);

extern const struct attribute_group amdgpu_ptl_attr_group;
#endif /* __AMDGPU_PTL_H__ */

Annotation

• Detected declarations: `struct amdgpu_ptl`, `enum amdgpu_ptl_fmt`, `enum amdgpu_ptl_disable_source`.
• Atlas domain: Driver Families / drivers/gpu.
• Implementation status: source implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

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.