[21.03] arm 内核不支持files cgroup

【环境信息】
系统：arm虚拟机内存：4g
cpu：4核
OS版本：21.03

[root@localhost ~]# cat /etc/openEuler-latest
openeulerversion=openEuler-21.03
compiletime=2021-03-04-21-04-09
gccversion=9.3.1-20210204.16.oe1
kernelversion=5.10.0-4.6.0.18.oe1
openjdkversion=1.8.0.282.b08-5.oe1

【问题复现步骤】
cat /proc/1/cgroup | grep files
查看是否有类似10:files:/的返回值
【预期结果】
有如下返回值

[root@localhost ~]# cat /proc/1/cgroup  |grep files
10:files:/

【实际结果】
没有返回值

[root@localhost ~]# cat /proc/1/cgroup  |grep files
[root@localhost ~]#

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合入补丁集解决：
0a960e73136d fs: fix files.usage bug when move tasks
b27ad1302a11 files_cgroup: fix error pointer when kvm_vm_worker_thread
bf8f0cc2c8ee fs/filescontrol: add a switch to enable / disable accounting of open fds
c15452babf94 cgroup/files: use task_get_css() to get a valid css during dup_fd()
9331053ce238 cgroups: Resource controller for open files
8b9cff8c3d49 openeuler_defconfig: enable CONFIG_CGROUP_FILES by default

src-openEuler/kernel

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