!4070 Backport etmem feature to OLK 6.6

Merge Pull Request from: @ci-robot 
 
PR sync from: Yuchen Tang <tangyuchen5@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/YX3ELZWBNV3H6DYZW67I4JTVHJAM2YOU/ 
v4 -> v5
- fix redundant kvm config check

v3 -> v4
- backport only core etmem feature
- modify kernel swap enabled toggle implementation

v2 -> v3
- fix code style and commit messages

v1 -> v2
- make independent patches to export symbols we need
- make independent patches for etmem scan and swap config
- fix indentation and code style problems

Yuchen Tang (9):
  etmem: add ETMEM feature CONFIG to mm/Kconfig
  etmem: add ETMEM scan feature CONFIG to mm/Kconfig
  mm: Export symbol __pud_trans_huge_lock
  mm: Export symbol walk_page_range
  etmem: add etmem scan feature
  mm: Export symbol reclaim_pages
  etmem: add etmem swap feature
  etmem: add original kernel swap enabled options
  etmem: enable etmem configurations


-- 
2.33.0
 
https://gitee.com/openeuler/kernel/issues/I4QVXW
https://gitee.com/openeuler/kernel/issues/I8T1MB?from=project-issue 
 
Link:https://gitee.com/openeuler/kernel/pulls/4070

 

Reviewed-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: Zucheng Zheng <zhengzucheng@huawei.com>
Reviewed-by: Liu Chao <liuchao173@huawei.com>
Reviewed-by: Weilong Chen <chenweilong@huawei.com>
Reviewed-by: zhangyi (F) <yi.zhang@huawei.com>
Reviewed-by: Kevin Zhu <zhukeqian1@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>