__mod_lruvec

函数名称：__mod_lruvec_state - update lruvec memory statistics*@lruvec: the lruvec*@idx: the stat item*@val: delta to add to the counter, can be negative* The lruvec is the intersection of the NUMA node and a cgroup

函数原型：void __mod_lruvec_state(struct lruvec *lruvec, enum node_stat_item idx, int val)

返回类型：void

参数：

类型	参数	名称
struct lruvec *	lruvec
enum node_stat_item	idx
int	val

729

pgdat等于lruvec_pgdat(lruvec)

735

__mod_node_page_state(pgdat, idx, val)

737

如果mem_cgroup_disabled()则返回

740

pn等于container_of - cast a member of a structure out to the containing structure*@ptr: the pointer to the member.*@type: the type of the container struct this is embedded in.*@member: the name of the member within the struct.(lruvec, structmem_cgroup_per_node, lruvec)

741

memcg等于Back pointer, we cannot

744

__mod_memcg_state - update cgroup memory statistics*@memcg: the memory cgroup*@idx: the stat item - can be enum memcg_stat_item or enum node_stat_item*@val: delta to add to the counter, can be negative

747

__this_cpu_add(count[idx], val)

749

x等于val加Operations for contexts that are safe from preemption/interrupts. These* operations verify that preemption is disabled.(count[idx])

750

如果此条件成立可能性小(为编译器优化)(abs - return absolute value of an argument*@x: the value. If it is unsigned type, it is converted to signed type first.* char is treated as if it was signed (regardless of whether it really is)* but the macro's return type is preserved as char.(x) > size of first charge trial. "32" comes from vmscan.c's magic value.* TODO: maybe necessary to use big numbers in big irons.)则

753

以pi 循环 atomic_long_add(x, & lruvec_stat[idx])

755

x等于0

757

__this_cpu_write(count[idx], x)

**调用者**
名称	描述
__mod_lruvec_slab_state
mem_cgroup_move_account	mem_cgroup_move_account - move account of the page@page: the page@compound: charge the page as compound or small page@from: mem_cgroup which the page is moved from.@to: mem_cgroup which the page is moved to. @from != @to.
mod_lruvec_state
__mod_lruvec_page_state
__inc_lruvec_state
__dec_lruvec_state

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