函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\ksm.c Create Date:2022-07-27 17:13:47
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称:This helper is used for getting right index into array of tree roots.* When merge_across_nodes knob is set to 1, there are only two rb-trees for* stable and unstable pages from all nodes with roots in index 0. Otherwise,

函数原型:static inline int get_kpfn_nid(unsigned long kpfn)

返回类型:int

参数:

类型参数名称
unsigned longkpfn
587  返回:如果Zeroed when merging across nodes is not allowed 则0否则NUMA(pfn_to_nid(kpfn))
调用者
名称描述
stable_tree_searchstable_tree_search - search for page inside the stable tree* This function checks if there is a page inside the stable tree* with identical content to the page that we are scanning right now
stable_tree_insertstable_tree_insert - insert stable tree node pointing to new ksm page* into the stable tree.* This function returns the stable tree node just allocated on success,* NULL otherwise.
unstable_tree_search_insertstable_tree_search_insert - search for identical page,* else insert rmap_item into the unstable tree.* This function searches for a page in the unstable tree identical to the* page currently being scanned; and if no identical page is found in the
cmp_and_merge_pagemp_and_merge_page - first see if page can be merged into the stable tree;* if not, compare checksum to previous and if it's the same, see if page can* be inserted into the unstable tree, or merged with a page already there and