函数逻辑报告 |
Source Code:mm\hugetlb.c |
Create Date:2022-07-27 16:56:07 |
| Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
| 首页 | 函数Tree |
| 注解内核,赢得工具 | 下载SCCT | English |
函数名称：Examine the existing reserve map and determine how many* huge pages in the specified range [f, t) are NOT currently* represented. This routine is called before a subsequent* call to region_add that will actually modify the reserve
函数原型：static long region_chg(struct resv_map *resv, long f, long t)
返回类型：long
参数：
| 类型 | 参数 | 名称 |
|---|---|---|
| struct resv_map * | resv | |
| long | f | |
| long | t |
| 372 | chg等于0 |
| 374 | 加自旋锁 |
| 375 | retry_locked : |
| 376 | adds_in_progress自加 |
| 382 | 如果adds_in_progress大于region_cache_count则 |
| 385 | VM_BUG_ON(adds_in_progress - region_cache_count > 1) |
| 387 | adds_in_progress自减 |
| 388 | 自旋锁解锁 |
| 390 | trg等于kmalloc(trg的长度, GFP_KERNEL) |
| 394 | 加自旋锁 |
| 395 | 添加链表项 |
| 396 | region_cache_count自加 |
| 397 | 转到:retry_locked |
| 400 | chg等于Must be called with resv->lock held. Calling this with count_only == true* will count the number of pages to be added but will not modify the linked* list. |
| 402 | 自旋锁解锁 |
| 403 | 返回:chg |
| 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 |