函数逻辑报告 |
Source Code:mm\gup.c |
Create Date:2022-07-27 16:00:17 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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函数名称:follow_pud_mask
函数原型:static struct page *follow_pud_mask(struct vm_area_struct *vma, unsigned long address, p4d_t *p4dp, unsigned int flags, struct follow_page_context *ctx)
返回类型:struct page
参数:
类型 | 参数 | 名称 |
---|---|---|
struct vm_area_struct * | vma | |
unsigned long | address | |
p4d_t * | p4dp | |
unsigned int | flags | |
struct follow_page_context * | ctx |
433 | pud等于pud_offset(p4dp, address) |
434 | 如果The "pud_xxx()" functions here are trivial for a folded two-level* setup: the pmd is never bad, and a pmd always exists (as it's folded* into the pud entry)则返回:no_page_table(vma, flags) |
436 | 如果pud_huge( * pud)且Flags, see mm.h. 按位与Huge TLB Page VM 则 |
440 | 返回:no_page_table(vma, flags) |
448 | 返回:no_page_table(vma, flags) |
450 | 如果pud_devmap( * pud)则 |
453 | 自旋锁解锁 |
457 | 如果此条件成立可能性小(为编译器优化)(pud_bad( * pud))则返回:no_page_table(vma, flags) |
名称 | 描述 |
---|---|
follow_p4d_mask |
源代码转换工具 开放的插件接口 | X |
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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 |