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Mike Rapoport
530d4c0cfd
Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Mike Rapoport <[email protected]> Cc: Catalin Marinas <[email protected]> Cc: Chris Zankel <[email protected]> Cc: "David S. Miller" <[email protected]> Cc: Geert Uytterhoeven <[email protected]> Cc: Greentime Hu <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Guan Xuetao <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: "James E.J. Bottomley" <[email protected]> Cc: Jonas Bonn <[email protected]> Cc: Jonathan Corbet <[email protected]> Cc: Ley Foon Tan <[email protected]> Cc: Mark Salter <[email protected]> Cc: Martin Schwidefsky <[email protected]> Cc: Matt Turner <[email protected]> Cc: Michael Ellerman <[email protected]> Cc: Michal Hocko <[email protected]> Cc: Michal Simek <[email protected]> Cc: Palmer Dabbelt <[email protected]> Cc: Paul Burton <[email protected]> Cc: Richard Kuo <[email protected]> Cc: Richard Weinberger <[email protected]> Cc: Rich Felker <[email protected]> Cc: Russell King <[email protected]> Cc: Serge Semin <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Tony Luck <[email protected]> Cc: Vineet Gupta <[email protected]> Cc: Yoshinori Sato <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
42 lines
1.4 KiB
ReStructuredText
42 lines
1.4 KiB
ReStructuredText
===========================
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Boot time memory management
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===========================
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Early system initialization cannot use "normal" memory management
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simply because it is not set up yet. But there is still need to
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allocate memory for various data structures, for instance for the
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physical page allocator.
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A specialized allocator called ``memblock`` performs the
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boot time memory management. The architecture specific initialization
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must set it up in :c:func:`setup_arch` and tear it down in
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:c:func:`mem_init` functions.
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Once the early memory management is available it offers a variety of
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functions and macros for memory allocations. The allocation request
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may be directed to the first (and probably the only) node or to a
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particular node in a NUMA system. There are API variants that panic
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when an allocation fails and those that don't.
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Memblock also offers a variety of APIs that control its own behaviour.
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Memblock Overview
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=================
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.. kernel-doc:: mm/memblock.c
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:doc: memblock overview
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Functions and structures
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========================
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Here is the description of memblock data structures, functions and
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macros. Some of them are actually internal, but since they are
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documented it would be silly to omit them. Besides, reading the
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descriptions for the internal functions can help to understand what
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really happens under the hood.
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.. kernel-doc:: include/linux/memblock.h
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.. kernel-doc:: mm/memblock.c
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:functions:
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