函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:include\linux\mm.h Create Date:2022-07-27 06:44:48
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：pud_alloc

函数原型：static inline pud_t *pud_alloc(struct mm_struct *mm, p4d_t *p4d, unsigned long address)

返回类型：pud_t

参数：

类型参数名称
struct mm_struct *mm
p4d_t *p4d
unsigned longaddress
1858  返回:如果此条件成立可能性小(为编译器优化)(The "p4d_xxx()" functions here are trivial for a folded two-level* setup: the pud is never bad, and a pud always exists (as it's folded* into the p4d entry))且__pud_alloc(mm, p4d, address)则NULL否则pud_offset(p4d, address)
调用者
名称描述
ioremap_pud_range
map_tboot_page
copy_pud_range
__get_locked_pte
remap_pud_range
apply_to_pud_range
__handle_mm_faultBy the time we get here, we already hold the mm semaphore* The mmap_sem may have been released depending on flags and our* return value. See filemap_fault() and __lock_page_or_retry().
alloc_new_pmd
vmap_pud_range
zero_p4d_populate
mm_alloc_pmd