Understanding the Linux® Virtual Memory Manager

Appendix E. Boot Memory Allocator

Contents

E.1 Initializing the Boot Memory Allocator	396
E.1.1 Function: init_bootmem()	396
E.1.2 Function: init_bootmem_node()	396
E.1.3 Function: init_bootmem_core()	397
E.2 Allocating Memory:	399
E.2.1 Reserving Large Regions of Memory	399
E.2.1.1 Function: reserve_bootmem()	399
E.2.1.2 Function: init_bootmem_node()	399
E.2.1.3 Function: init_bootmem_core()	399
E.2.2 Allocating Memory at Boot_Time	401
E.2.2.1 Function: alloc_bootmem()	401
E.2.2.2 Function: __alloc_bootmem()	401
E.2.2.3 Function: alloc_bootmem_node()	402
E.2.2.4 Function: __alloc_bootmem_node()	402
E.2.2.5 Function: __alloc_bootmem_core()	403
E.3 Freeing Memory	409
E.3.1 Function: free_bootmem()	409
E.3.2 Function: free_bootmem_core()	409
E.4 Retiring the Boot Memory Allocator