| dde_region | Region data type |
| devs | All sound devices |
| irq_desc | IRQ descriptor array |
| kernel_thread_data | Kernel thread startup helper |
| kmem_cache_s | Local kmem_cache to L4 slab_cache mapping |
| pci_page | Cacheable header for 'allocation' bytes |
| pci_pool | Pool |
| pcidevs | PCI device structure array |
| sound_unit | Internal sound device/unit structure |