函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\memblock.c Create Date:2022-07-27 16:40:57
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：memblock_alloc_internal - allocate boot memory block*@size: size of memory block to be allocated in bytes*@align: alignment of the region and block's size*@min_addr: the lower bound of the memory region to allocate (phys address)*@max_addr: the upper

函数原型：static void *__init memblock_alloc_internal(phys_addr_t size, phys_addr_t align, phys_addr_t min_addr, phys_addr_t max_addr, int nid, bool exact_nid)

返回类型：void

参数：

类型参数名称
phys_addr_tsize
phys_addr_talign
phys_addr_tmin_addr
phys_addr_tmax_addr
intnid
boolexact_nid
1466  如果WARN_ON_ONCE(slab_is_available())则返回:根据内存节点分配内存
1469  如果max_addr大于current_limit则max_addr等于current_limit
1472  alloc等于memblock_alloc_range_nid - allocate boot memory block*@size: size of memory block to be allocated in bytes*@align: alignment of the region and block's size*@start: the lower bound of the memory region to allocate (phys address)*@end: the upper bound of
1476  如果非alloc且min_addr则alloc等于memblock_alloc_range_nid - allocate boot memory block*@size: size of memory block to be allocated in bytes*@align: alignment of the region and block's size*@start: the lower bound of the memory region to allocate (phys address)*@end: the upper bound of
1480  如果非alloc则返回:NULL
1483  返回:phys_to_virt - map physical address to virtual*@address: address to remap* The returned virtual address is a current CPU mapping for* the memory address given. It is only valid to use this function on* addresses that have a kernel mapping
调用者
名称描述
memblock_alloc_exact_nid_rawmemblock_alloc_exact_nid_raw - allocate boot memory block on the exact node* without zeroing memory*@size: size of memory block to be allocated in bytes*@align: alignment of the region and block's size*@min_addr: the lower bound of the memory region from
memblock_alloc_try_nid_rawmemblock_alloc_try_nid_raw - allocate boot memory block without zeroing* memory and without panicking*@size: size of memory block to be allocated in bytes*@align: alignment of the region and block's size*@min_addr: the lower bound of the memory region
memblock_alloc_try_nidmemblock_alloc_try_nid - allocate boot memory block*@size: size of memory block to be allocated in bytes*@align: alignment of the region and block's size*@min_addr: the lower bound of the memory region from where the allocation* is preferred (phys