hulk inclusion
category: feature
bugzilla: 48159
CVE: N/A

We record the pid of dump tasks in the reserved memory,
and reserve the pids before init task start.
In the recover process, free the reserved pids and realloc them for use.
Signed-off-by: NJingxian He <hejingxian@huawei.com>
Reviewed-by: NWenliang He <hewenliang4@huawei.com>
Reviewed-by: NJing Xiangfeng <jingxiangfeng@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>