Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:include\linux\mm.h Create Date:2022-07-28 05:43:43
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:pmd_alloc

Proto:static inline pmd_t *pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigned long address)

Type:pmd_t

Parameter:

TypeParameterName
struct mm_struct *mm
pud_t *pud
unsigned longaddress
1865  Return If Value for the false possibility is greater at compile time(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)) && __pmd_alloc(mm, pud, address) Then NULL Else pmd_offset(pud, address)
Caller
NameDescribe
ioremap_pmd_range
map_tboot_page
copy_pmd_range
__get_locked_pte
remap_pmd_range
apply_to_pmd_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_pmd_range
zero_pud_populate
mm_alloc_pmd