memblock_find_in_range

函数名称：memblock_find_in_range_node

函数原型：static phys_addr_t __attribute__((__section__(".meminit.text"))) __attribute__((__cold__)) __attribute__((__no_instrument_function__))memblock_find_in_range_node(phys_addr_t size, phys_addr_t align, phys_addr_t start, phys_addr_t end, int nid, enum memblock_flags flags)

返回类型：phys_addr_t

参数：

类型	参数	名称
phys_addr_t	size
phys_addr_t	align
phys_addr_t	start
phys_addr_t	end
int	nid
enum memblock_flags	flags

275

如果end恒等于MEMBLOCK_ALLOC_ACCESSIBLE或end恒等于MEMBLOCK_ALLOC_KASAN则end等于current_limit

280

start等于max_t - return maximum of two values, using the specified type*@type: data type to use*@x: first value*@y: second value(phys_addr_t, start, PAGE_SIZE)

281

end等于两数取大(start, end)

282

kernel_end等于We need __phys_reloc_hide() here because gcc may assume that there is no* overflow during __pa() calculation and can optimize it unexpectedly.* Newer versions of gcc provide -fno-strict-overflow switch to handle this* case properly(_end)

288

如果Check if the allocation direction is bottom-up or not.* if this is true, that said, memblock will allocate memory* in bottom-up direction.且end大于kernel_end则

292

bottom_up_start等于两数取大(start, kernel_end)

295

ret等于__memblock_find_range_bottom_up(bottom_up_start, end, size, align, nid, flags)

297

如果ret则返回:ret

310

WARN_ONCE(IS_ENABLED(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'y' or 'm',* 0 otherwise.(CONFIG_MEMORY_HOTREMOVE), "memblock: bottom-up allocation failed, memory hotremove may be affected\n")

314

返回:__memblock_find_range_top_down(start, end, size, align, nid, flags)

**调用者**
名称	描述
memblock_find_in_range
memblock_alloc_range_nid	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

源代码转换工具开放的插件接口	X
支持：c/c++/esqlc/java Oracle/Informix/Mysql 插件可实现：逻辑报告代码生成和批量转换代码

函数逻辑报告