Memory subsystem

Functions

Public functions

`dde_kit_large_free`

Free large memory block

Argument

void * p Pointer to memory block

`dde_kit_large_malloc`

Allocate large memory block

Argument

dde_kit_size_t size Block size

Return: void * Pointer to new memory block

Allocations via this allocator may be slow (because RPCs to remote services may be involved) and should be used only for large blocks of several pages. If allocations/deallocations are relatively dynamic the large memory allocator should be used as backend for a block caching frontend.

Allocated blocks have valid virt->phys mappings and are physically contiguous.

`dde_kit_simple_free`

Free memory block via simple allocator

Argument

void * p Pointer to memory block

As in C99, if p is NULL no operation is performed.

`dde_kit_simple_malloc`

Allocate memory block via simple allocator

Argument

dde_kit_size_t size Block size

Return: void * Pointer to new memory block

The blocks allocated via this allocator CANNOT be used for DMA or other device operations, i.e., there exists no virt->phys mapping.

`dde_kit_slab_alloc`

Allocate slab in slab cache

Argument

dde_kit_slab * slab Pointer to slab cache

Return: void * Pointer to allocated slab

`dde_kit_slab_destroy`

Destroy slab cache

Argument

dde_kit_slab * slab Pointer to slab cache structure

`dde_kit_slab_free`

Deallocate slab in slab cache

Arguments

`dde_kit_slab *`	slab	Pointer to slab cache
`void *`	objp	Pointer to allocated slab

`dde_kit_slab_get_data`

Read user pointer from slab cache

Argument