drivers/gpu/drm/i915/display/intel_modeset_lock.h

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/i915/display/intel_modeset_lock.h

Extension

.h

Size

989 bytes

Lines

34

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

• linux/types.h

Detected Declarations

• struct drm_modeset_acquire_ctx
• struct intel_atomic_state

Annotated Snippet

#ifndef __INTEL_MODESET_LOCK_H__
#define __INTEL_MODESET_LOCK_H__

#include <linux/types.h>

struct drm_modeset_acquire_ctx;
struct intel_atomic_state;

void _intel_modeset_lock_begin(struct drm_modeset_acquire_ctx *ctx,
			       struct intel_atomic_state *state,
			       unsigned int flags,
			       int *ret);
bool _intel_modeset_lock_loop(int *ret);
void _intel_modeset_lock_end(struct drm_modeset_acquire_ctx *ctx,
			     struct intel_atomic_state *state,
			     int *ret);

/*
 * Note that one must always use "continue" rather than
 * "break" or "return" to handle errors within the
 * intel_modeset_lock_ctx_retry() block.
 */
#define intel_modeset_lock_ctx_retry(ctx, state, flags, ret) \
	for (_intel_modeset_lock_begin((ctx), (state), (flags), &(ret)); \
	     _intel_modeset_lock_loop(&(ret)); \
	     _intel_modeset_lock_end((ctx), (state), &(ret)))

#endif /* __INTEL_MODESET_LOCK_H__ */

Annotation

• Immediate include surface: `linux/types.h`.
• Detected declarations: `struct drm_modeset_acquire_ctx`, `struct intel_atomic_state`.
• 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.