函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\zsmalloc.c Create Date:2022-07-27 18:01:54
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：bj_to_location - get (<page>, <obj_idx>) from encoded object value*@obj: the encoded object value*@page: page object resides in zspage*@obj_idx: object index

函数原型：static void obj_to_location(unsigned long obj, struct page **page, unsigned int *obj_idx)

返回类型：void

参数：

类型参数名称
unsigned longobj
struct page **page
unsigned int *obj_idx
849  obj右移等于OBJ_TAG_BITS位
850  page等于pfn_to_page(obj >> OBJ_INDEX_BITS)
851  obj_idx等于obj按位与OBJ_INDEX_MASK
调用者
名称描述
zs_map_objectzs_map_object - get address of allocated object from handle.*@pool: pool from which the object was allocated*@handle: handle returned from zs_malloc*@mm: maping mode to use* Before using an object allocated from zs_malloc, it must be mapped using
zs_unmap_object
obj_free
zs_free
zs_object_copy