pud_none

函数名称：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)

函数原型：static inline int pud_none(pud_t pud)

返回类型：int

参数：

类型	参数	名称
pud_t	pud

**调用者**
名称	描述
follow_pud_mask
get_gate_page
__handle_mm_fault	By 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().
__follow_pte_pmd
walk_pud_range
vmalloc_to_page	Walk a vmap address to the struct page it maps.
vmemmap_pud_populate
shadow_mapped
zero_pud_populate
kasan_free_pud
pmd_alloc
pud_none_or_clear_bad
pud_none_or_trans_huge_or_dev_or_clear_bad	See pmd_none_or_trans_huge_or_clear_bad for discussion.

函数逻辑报告