88 lines
2.3 KiB
C
88 lines
2.3 KiB
C
/**
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* \file page_alloc.h
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* License details are found in the file LICENSE.
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* \brief
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* Declare functions acquire physical pages and assign virtual addresses
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* to them.
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* \author Taku Shimosawa <shimosawa@is.s.u-tokyo.ac.jp> \par
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* \author Balazs Gerofi <bgerofi@riken.jp> \par
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*/
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/*
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* HISTORY
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* 2016/12 - bgerofi - NUMA support
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* 2017/06 - bgerofi - rewrite physical memory mngt for red-black trees
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*/
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#ifndef __HEADER_GENERIC_IHK_PAGE_ALLOC
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#define __HEADER_GENERIC_IHK_PAGE_ALLOC
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#include <list.h>
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#include <rbtree.h>
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/* XXX: Physical memory management shouldn't be part of IHK */
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struct node_distance {
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int id;
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int distance;
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};
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#define IHK_RBTREE_ALLOCATOR
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#ifdef IHK_RBTREE_ALLOCATOR
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struct free_chunk {
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unsigned long addr, size;
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struct rb_node node;
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};
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#endif
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struct ihk_mc_numa_node {
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int id;
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int linux_numa_id;
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int type;
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struct list_head allocators;
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struct node_distance *nodes_by_distance;
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#ifdef IHK_RBTREE_ALLOCATOR
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struct rb_root free_chunks;
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mcs_lock_node_t lock;
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unsigned long nr_free_pages;
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unsigned long min_addr;
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unsigned long max_addr;
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#endif
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};
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#ifdef IHK_RBTREE_ALLOCATOR
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unsigned long ihk_numa_alloc_pages(struct ihk_mc_numa_node *node,
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int npages, int p2align);
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void ihk_numa_free_pages(struct ihk_mc_numa_node *node,
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unsigned long addr, int npages);
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int ihk_numa_add_free_pages(struct ihk_mc_numa_node *node,
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unsigned long addr, unsigned long size);
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#endif
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struct ihk_page_allocator_desc {
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unsigned long start, end;
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unsigned int last;
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unsigned int count;
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unsigned int flag;
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unsigned int shift;
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mcs_lock_node_t lock;
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struct list_head list;
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unsigned long map[0];
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};
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unsigned long ihk_pagealloc_count(void *__desc);
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void *__ihk_pagealloc_init(unsigned long start, unsigned long size,
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unsigned long unit, void *initial,
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unsigned long *pdescsize);
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void *ihk_pagealloc_init(unsigned long start, unsigned long size,
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unsigned long unit);
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void ihk_pagealloc_destroy(void *__desc);
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unsigned long ihk_pagealloc_alloc(void *__desc, int npages, int p2align);
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void ihk_pagealloc_reserve(void *desc, unsigned long start, unsigned long end);
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void ihk_pagealloc_free(void *__desc, unsigned long address, int npages);
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unsigned long ihk_pagealloc_count(void *__desc);
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int ihk_pagealloc_query_free(void *__desc);
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#endif
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