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- ===========================
- Boot time memory management
- ===========================
- Early system initialization cannot use "normal" memory management
- simply because it is not set up yet. But there is still need to
- allocate memory for various data structures, for instance for the
- physical page allocator.
- A specialized allocator called ``memblock`` performs the
- boot time memory management. The architecture specific initialization
- must set it up in :c:func:`setup_arch` and tear it down in
- :c:func:`mem_init` functions.
- Once the early memory management is available it offers a variety of
- functions and macros for memory allocations. The allocation request
- may be directed to the first (and probably the only) node or to a
- particular node in a NUMA system. There are API variants that panic
- when an allocation fails and those that don't.
- Memblock also offers a variety of APIs that control its own behaviour.
- Memblock Overview
- =================
- .. kernel-doc:: mm/memblock.c
- :doc: memblock overview
- Functions and structures
- ========================
- Here is the description of memblock data structures, functions and
- macros. Some of them are actually internal, but since they are
- documented it would be silly to omit them. Besides, reading the
- descriptions for the internal functions can help to understand what
- really happens under the hood.
- .. kernel-doc:: include/linux/memblock.h
- .. kernel-doc:: mm/memblock.c
- :functions:
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