drivers/gpu/drm/i915/gem/i915_gem_shrinker.h

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/i915/gem/i915_gem_shrinker.h

Extension

.h

Size

973 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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/bits.h

Detected Declarations

• struct drm_i915_private
• struct i915_gem_ww_ctx
• struct mutex

Annotated Snippet

#ifndef __I915_GEM_SHRINKER_H__
#define __I915_GEM_SHRINKER_H__

#include <linux/bits.h>

struct drm_i915_private;
struct i915_gem_ww_ctx;
struct mutex;

/* i915_gem_shrinker.c */
unsigned long i915_gem_shrink(struct i915_gem_ww_ctx *ww,
			      struct drm_i915_private *i915,
			      unsigned long target,
			      unsigned long *nr_scanned,
			      unsigned flags);
#define I915_SHRINK_UNBOUND	BIT(0)
#define I915_SHRINK_BOUND	BIT(1)
#define I915_SHRINK_ACTIVE	BIT(2)
#define I915_SHRINK_VMAPS	BIT(3)
#define I915_SHRINK_WRITEBACK	BIT(4)

unsigned long i915_gem_shrink_all(struct drm_i915_private *i915);
void i915_gem_driver_register__shrinker(struct drm_i915_private *i915);
void i915_gem_driver_unregister__shrinker(struct drm_i915_private *i915);
void i915_gem_shrinker_taints_mutex(struct drm_i915_private *i915,
				    struct mutex *mutex);

#endif /* __I915_GEM_SHRINKER_H__ */

Annotation

• Immediate include surface: `linux/bits.h`.
• Detected declarations: `struct drm_i915_private`, `struct i915_gem_ww_ctx`, `struct mutex`.
• Atlas domain: Driver Families / drivers/gpu.
• Implementation status: source implementation candidate.

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.