Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\kasan\init.c Create Date:2022-07-28 15:51:44
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:zero_pmd_populate

Proto:static int __ref zero_pmd_populate(pud_t *pud, unsigned long addr, unsigned long end)

Type:int

Parameter:

TypeParameterName
pud_t *pud
unsigned longaddr
unsigned longend
116  pmd = pmd_offset(pud, addr)
119  Do
120  next = pmd_addr_end(addr, end)
122  If IS_ALIGNED(addr, PMD_SIZE) && end - addr >= PMD_SIZE Then
123  pmd_populate_kernel( & For dynamically allocated mm_structs, there is a dynamically sized cpumask* at the end of the structure, the size of which depends on the maximum CPU* number the system can see, pmd, lm_alias(kasan_early_shadow_pte))
125  Continue
128  If pmd_none( * pmd) Then
131  If slab_is_available() Then p = pte_alloc_one_kernel - allocate a page for PTE-level kernel page table*@mm: the mm_struct of the current context* Return: pointer to the allocated memory or %NULL on error
133  Else p = early_alloc(PAGE_SIZE, NUMA_NO_NODE)
135  If Not p Then Return -ENOMEM
138  pmd_populate_kernel( & For dynamically allocated mm_structs, there is a dynamically sized cpumask* at the end of the structure, the size of which depends on the maximum CPU* number the system can see, pmd, p)
140  zero_pte_populate(pmd, addr, next)
141  When pmd++, addr = next , addr != end cycle
143  Return 0
Caller
NameDescribe
zero_pud_populate