calculate_node_totalpages

函数名称：calculate_node_totalpages

函数原型：static void __init calculate_node_totalpages(struct pglist_data *pgdat, unsigned long node_start_pfn, unsigned long node_end_pfn, unsigned long *zones_size, unsigned long *zholes_size)

返回类型：void

参数：

类型	参数	名称
struct pglist_data *	pgdat
unsigned long	node_start_pfn
unsigned long	node_end_pfn
unsigned long *	zones_size
unsigned long *	zholes_size

6524

realtotalpages等于0, totalpages等于0

6527

以i小于MAX_NR_ZONES 循环

6528

zone等于包含了结点中各内存域的数据结构加i

6532

size等于zone_spanned_pages_in_node(全局结点ID, i, node_start_pfn, node_end_pfn, & zone_start_pfn, & zone_end_pfn, zones_size)

6538

real_size等于size减zone_absent_pages_in_node(全局结点ID, i, node_start_pfn, node_end_pfn, zholes_size)

6541

如果size则内存域第一个页帧的索引等于zone_start_pfn

6543

否则内存域第一个页帧的索引等于0

6545

内存域中页的总数等于size

6546

内存域中实际上可用的页数目等于real_size

6548

totalpages加等于size

6549

realtotalpages加等于real_size

6552

该结点以页帧为单位计算的长度，包含内存空洞等于totalpages

6553

结点中页帧的数目等于realtotalpages

6554

printk - print a kernel message*@fmt: format string* This is printk(). It can be called from any context. We want it to work.* We try to grab the console_lock. If we succeed, it's easy - we log the* output and call the console drivers

**调用者**
名称	描述
free_area_init_node

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