kabi: reserve space for cpu cgroup and cpuset cgroup related structures

hulk inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I4GII8?from=project-issue
CVE: NA

--------

We reserve some fields beforehand for cpu cgroup and cpuset related structures
prone to change, therefore, we can hot add/change features of cpu cgroup cpuset
and cgroup with this enhancement.

After reserving, normally cache does not matter as the reserved fields
are not accessed at all.

--------
Signed-off-by: NLu Jialin <lujialin4@huawei.com>
Reviewed-by: NChen Hui <judy.chenhui@huawei.com>
Reviewed-by: Nweiyang wang <wangweiyang2@huawei.com>
Reviewed-by: NXiu Jianfeng <xiujianfeng@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

kernel/cgroup/cpuset.c

@@ -65,6 +65,7 @@
 #include <linux/mutex.h>
 #include <linux/cgroup.h>
 #include <linux/wait.h>
+#include <linux/kabi.h>
 
 DEFINE_STATIC_KEY_FALSE(cpusets_pre_enable_key);
 DEFINE_STATIC_KEY_FALSE(cpusets_enabled_key);
@@ -160,6 +161,11 @@ struct cpuset {
 	 */
 	int use_parent_ecpus;
 	int child_ecpus_count;
+
+	KABI_RESERVE(1)
+	KABI_RESERVE(2)
+	KABI_RESERVE(3)
+	KABI_RESERVE(4)
 };
 
 /*

kernel/sched/sched.h

@@ -65,6 +65,7 @@
 #include <linux/syscalls.h>
 #include <linux/task_work.h>
 #include <linux/tsacct_kern.h>
+#include <linux/kabi.h>
 
 #include <asm/tlb.h>
 #include <asm-generic/vmlinux.lds.h>
@@ -440,6 +441,10 @@ struct task_group {
 	struct uclamp_se	uclamp[UCLAMP_CNT];
 #endif
 
+	KABI_RESERVE(1)
+	KABI_RESERVE(2)
+	KABI_RESERVE(3)
+	KABI_RESERVE(4)
 };
 
 #ifdef CONFIG_FAIR_GROUP_SCHED