函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\memory-failure.c Create Date:2022-07-27 17:53:43
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：get_hwpoison_page() - Get refcount for memory error handling:*@page: raw error page (hit by memory error)* Return: return 0 if failed to grab the refcount, otherwise true (some* non-zero value.)

函数原型：int get_hwpoison_page(struct page *page)

返回类型：int

参数：

类型参数名称
struct page *page
918  head等于compound_head(page)
920  如果非PageHuge() only returns true for hugetlbfs pages, but not for normal or* transparent huge pages. See the PageTransHuge() documentation for more* details.且PageHuge() only returns true for hugetlbfs pages, but not for* normal or transparent huge pages.* PageTransHuge() returns true for both transparent huge and* hugetlbfs pages, but not normal pages. PageTransHuge() can only be则
927  如果非PageAnon(head)则
928  打印错误信息("Memory failure: %#lx: non anonymous thp\n", page_to_pfn(page))
930  返回:0
934  如果Try to grab a ref unless the page has a refcount of zero, return false if* that is the case.* This can be called when MMU is off so it must not access* any of the virtual mappings.则
935  如果head恒等于compound_head(page)则返回:1
938  打印信息("Memory failure: %#lx cannot catch tail\n", page_to_pfn(page))
940  Perform a free_page(), also freeing any swap cache associated with* this page if it is the last user of the page.
943  返回:0
调用者
名称描述
memory_failure_hugetlb
memory_failurememory_failure - Handle memory failure of a page.*@pfn: Page Number of the corrupted page*@flags: fine tune action taken* This function is called by the low level machine check code* of an architecture when it detects hardware memory corruption* of a page
unpoison_memorypoison_memory - Unpoison a previously poisoned page*@pfn: Page number of the to be unpoisoned page* Software-unpoison a page that has been poisoned by* memory_failure() earlier
__get_any_pageSafely get reference count of an arbitrary page.* Returns 0 for a free page, -EIO for a zero refcount page* that is not free, and 1 for any other page type.* For 1 the page is returned with increased page count, otherwise not.
hwpoison_inject