drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v11.c

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v11.c

Extension

.c

Size

18435 bytes

Lines

599

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.
• Touches user memory; correctness depends on fault-safe copying and privilege boundary handling.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/printk.h
• linux/slab.h
• linux/uaccess.h
• kfd_priv.h
• kfd_mqd_manager.h
• v11_structs.h
• gc/gc_11_0_0_offset.h
• gc/gc_11_0_0_sh_mask.h
• amdgpu_amdkfd.h

Detected Declarations

• function files
• function update_cu_mask
• function set_priority
• function init_mqd
• function load_mqd
• function update_mqd
• function check_preemption_failed
• function get_wave_state
• function checkpoint_mqd
• function restore_mqd
• function checkpoint_mqd_sdma
• function restore_mqd_sdma
• function init_mqd_hiq
• function destroy_hiq_mqd
• function init_mqd_sdma
• function update_mqd_sdma
• function debugfs_show_mqd
• function debugfs_show_mqd_sdma

Annotated Snippet

if (dev->kfd->shared_resources.enable_mes) {
			mqd->allocate_mqd = allocate_mqd;
			mqd->free_mqd = kfd_free_mqd_cp;
		}
		pr_debug("%s@%i\n", __func__, __LINE__);
		break;
	default:
		kfree(mqd);
		return NULL;
	}

	return mqd;
}

Annotation

• Immediate include surface: `linux/printk.h`, `linux/slab.h`, `linux/uaccess.h`, `kfd_priv.h`, `kfd_mqd_manager.h`, `v11_structs.h`, `gc/gc_11_0_0_offset.h`, `gc/gc_11_0_0_sh_mask.h`.
• Detected declarations: `function files`, `function update_cu_mask`, `function set_priority`, `function init_mqd`, `function load_mqd`, `function update_mqd`, `function check_preemption_failed`, `function get_wave_state`, `function checkpoint_mqd`, `function restore_mqd`.
• Atlas domain: Driver Families / drivers/gpu.
• Implementation status: source implementation candidate.
• This snippet crosses the user/kernel memory boundary; validate fault handling and access checks before translating the pattern.
• 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.