drain_zone

函数名称：Called from the vmstat counter updater to drain pagesets of this* currently executing processor on remote nodes after they have* expired.* Note that this function must be called with the thread pinned to* a single processor.

函数原型：void drain_zone_pages(struct zone *zone, struct per_cpu_pages *pcp)

返回类型：void

参数：

类型	参数	名称
struct zone *	zone
struct per_cpu_pages *	pcp

2792

local_irq_save(flags)

2793

batch等于READ_ONCE( chunk size for buddy add/remove )

2794

to_drain等于两数取小( number of pages in the list , batch)

2795

如果to_drain大于0则Frees a number of pages from the PCP lists* Assumes all pages on list are in same zone, and of same order.* count is the number of pages to free.* If the zone was previously in an "all pages pinned" state then look to

2797

local_irq_restore(flags)

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