allocate_resource (9) Linux Manual Page
allocate_resource – allocate empty slot in the resource tree given range & alignment. The resource will be reallocated with a new size if it was already allocated
Synopsis
int allocate_resource(struct resource *root, struct resource *new, resource_size_t size, resource_size_t min, resource_size_t max, resource_size_t align, resource_size_t (*alignf)(void *, const struct resource *, resource_size_t, resource_size_t), void *alignf_data);Arguments
root
-
- root resource descriptor
new
- resource descriptor desired by caller
size
- requested resource region size
min
- minimum boundary to allocate
max
- maximum boundary to allocate
align
- alignment requested, in bytes
alignf
- alignment function, optional, called if not NULL
alignf_data
- arbitrary data to pass to the alignf function