buddy.h File Reference

#include "mos/mm/physical/pmm.h"
#include <mos/types.h>

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Functions
void	buddy_dump_all ()
	Dump the state of the buddy allocator.
void	buddy_init (size_t max_nframes)
	Initialize the buddy allocator with the given maximum number of frames.
void	buddy_reserve_n (pfn_t pfn, size_t nframes)
	Reserve several frames at the given physical frame number.
phyframe_t *	buddy_alloc_n_exact (size_t nframes)
	Allocate nframes of contiguous physical memory.
void	buddy_free_n (pfn_t pfn, size_t nframes)
	Free nframes of contiguous physical memory.

Function Documentation

buddy_dump_all()

void buddy_dump_all

(

)

Dump the state of the buddy allocator.

Definition at line 301 of file buddy_core.c.

Referenced by pmm_dump_lists().

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buddy_init()

void buddy_init

(

size_t

max_nframes

)

Initialize the buddy allocator with the given maximum number of frames.

Parameters

max_nframes

The maximum number of frames that are addressable on the system.

Definition at line 309 of file buddy_core.c.

Referenced by pmm_init().

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buddy_reserve_n()

void buddy_reserve_n	(	pfn_t	pfn,
		size_t	nframes )

Reserve several frames at the given physical frame number.

Parameters

pfn	The physical frame number to reserve.
nframes	The number of frames to reserve.

Definition at line 323 of file buddy_core.c.

Referenced by pmm_reserve_frames().

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buddy_alloc_n_exact()

phyframe_t * buddy_alloc_n_exact

(

size_t

nframes

)

Allocate nframes of contiguous physical memory.

Parameters

nframes

The number of frames to allocate.

Returns

phyframe_t * The first frame in the contiguous block.

Note

nframes will be allocated exactly, and each frame can be freed individually. (unlike buddy_alloc_n_compound)

Definition at line 331 of file buddy_core.c.

Referenced by pmm_allocate_frames().

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buddy_free_n()

void buddy_free_n	(	pfn_t	pfn,
		size_t	nframes )

Free nframes of contiguous physical memory.

Parameters

pfn	The physical frame number of the first frame in the contiguous block.
nframes	The number of frames to free.

Note

// !! The number of frames freed must be the same as the number of frames allocated. // TODO

Definition at line 370 of file buddy_core.c.

Referenced by pmm_free_frames().

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