drm_gpuvm_bo Struct Reference

#include <drm_gpuvm.h>

Collaboration diagram for drm_gpuvm_bo:

Public Attributes
struct drm_gpuvm *	vm
struct drm_gem_object *	obj
bool	evicted
struct kref	kref
struct {
struct list_head   gpuva
struct {
struct list_head   gem
struct list_head   extobj
struct list_head   evict
struct llist_node   bo_defer
}   entry
}	list

Detailed Description

struct drm_gpuvm_bo - structure representing a &drm_gpuvm and &drm_gem_object combination

This structure is an abstraction representing a &drm_gpuvm and &drm_gem_object combination. It serves as an indirection to accelerate iterating all &drm_gpuvas within a &drm_gpuvm backed by the same &drm_gem_object.

Furthermore it is used cache evicted GEM objects for a certain GPU-VM to accelerate validation.

Typically, drivers want to create an instance of a struct drm_gpuvm_bo once a GEM object is mapped first in a GPU-VM and release the instance once the last mapping of the GEM object in this GPU-VM is unmapped.

Member Data Documentation

bo_defer

struct llist_node drm_gpuvm_bo::bo_defer

@list.entry.bo_defer: List entry to attach to the &drm_gpuvms bo_defer list.

[struct]

struct { ... } drm_gpuvm_bo::entry

@list.entry: Structure containing all &list_heads serving as entry.

evict

struct list_head drm_gpuvm_bo::evict

@list.entry.evict: List entry to attach to the &drm_gpuvms evict list.

evicted

bool drm_gpuvm_bo::evicted

@evicted: Indicates whether the &drm_gem_object is evicted; field protected by the &drm_gem_object's dma-resv lock.

extobj

struct list_head drm_gpuvm_bo::extobj

@list.entry.evict: List entry to attach to the &drm_gpuvms extobj list.

gem

struct list_head drm_gpuvm_bo::gem

@list.entry.gem: List entry to attach to the &drm_gem_objects gpuva list.

gpuva

struct list_head drm_gpuvm_bo::gpuva

@list.gpuva: The list of linked &drm_gpuvas.

It is safe to access entries from this list as long as the GEM's gpuva lock is held. See also struct drm_gem_object.

kref

struct kref drm_gpuvm_bo::kref

@kref: The reference count for this &drm_gpuvm_bo.

[struct]

struct { ... } drm_gpuvm_bo::list

@list: Structure containing all &list_heads.

obj

struct drm_gem_object* drm_gpuvm_bo::obj

@obj: The &drm_gem_object being mapped in @vm. This is a reference counted pointer.

vm

struct drm_gpuvm* drm_gpuvm_bo::vm

@vm: The &drm_gpuvm the @obj is mapped in. This is a reference counted pointer.

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The documentation for this struct was generated from the following file:

• XenevaOS/BaseHdr/drm/drm_gpuvm.h