get_mctgt_type

函数名称：We don't consider PMD mapped swapping or file mapped pages because THP does* not support them for now.* Caller should make sure that pmd_trans_huge(pmd) is true.

函数原型：static enum mc_target_type get_mctgt_type_thp(struct vm_area_struct *vma, unsigned long addr, pmd_t pmd, union mc_target *target)

返回类型：enum mc_target_type

参数：

类型	参数	名称
struct vm_area_struct *	vma
unsigned long	addr
pmd_t	pmd
union mc_target *	target

5450

struct page * page = NULL

5451

ret等于MC_TARGET_NONE

5453

如果此条件成立可能性小(为编译器优化)(is_swap_pmd(pmd))则

5454

VM_BUG_ON(thp_migration_supported() && !is_pmd_migration_entry(pmd))

5456

返回:ret

5458

page等于Currently stuck as a macro due to indirect forward reference to* linux/mmzone.h's __section_mem_map_addr() definition:(pmd)

5459

VM_BUG_ON_PAGE(!page || !PageHead(page), page)

5460

如果非flags按位与Types of charges to be moved.的值则返回:ret

5462

如果mem_cgroup恒等于from则

5463

ret等于MC_TARGET_PAGE

5464

如果target则

5465

get_page(page)

5466

page等于page

5469

返回:ret

**调用者**
名称	描述
mem_cgroup_count_precharge_pte_range
mem_cgroup_move_charge_pte_range

源代码转换工具开放的插件接口	X
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

函数逻辑报告