mirror of https://github.com/F-Stack/f-stack.git
93 lines
2.8 KiB
C
93 lines
2.8 KiB
C
/*
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* Copyright (c) 2010 Kip Macy All rights reserved.
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* Copyright (C) 2017 THL A29 Limited, a Tencent company.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef _FSTACK_VM_UMA_INT_H_
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#define _FSTACK_VM_UMA_INT_H_
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#include <sys/mutex.h>
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#define vtoslab vtoslab_native
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#define vsetslab vsetslab_native
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#include_next <vm/uma_int.h>
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#undef vtoslab
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#undef vsetslab
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#undef UMA_MD_SMALL_ALLOC
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#define critical_enter() do {} while(0)
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#define critical_exit() do {} while(0)
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extern int uma_page_mask;
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#define UMA_PAGE_HASH(va) (((va) >> PAGE_SHIFT) & uma_page_mask)
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typedef struct uma_page {
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LIST_ENTRY(uma_page) list_entry;
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vm_offset_t up_va;
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uma_slab_t up_slab;
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} *uma_page_t;
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LIST_HEAD(uma_page_head, uma_page);
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extern struct uma_page_head *uma_page_slab_hash;
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static __inline uma_slab_t
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vtoslab(vm_offset_t va)
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{
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struct uma_page_head *hash_list;
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uma_page_t up;
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hash_list = &uma_page_slab_hash[UMA_PAGE_HASH(va)];
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LIST_FOREACH(up, hash_list, list_entry)
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if (up->up_va == va)
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return (up->up_slab);
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return (NULL);
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}
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static __inline void
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vsetslab(vm_offset_t va, uma_slab_t slab)
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{
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struct uma_page_head *hash_list;
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uma_page_t up;
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hash_list = &uma_page_slab_hash[UMA_PAGE_HASH(va)];
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LIST_FOREACH(up, hash_list, list_entry)
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if (up->up_va == va)
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break;
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if (up != NULL) {
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up->up_slab = slab;
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return;
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}
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up = malloc(sizeof(*up), M_DEVBUF, M_WAITOK);
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up->up_va = va;
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up->up_slab = slab;
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LIST_INSERT_HEAD(hash_list, up, list_entry);
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}
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#endif /* _FSTACK_VM_UMA_INT_H_ */
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