From: Lu Jialin <lujialin4@huawei.com> hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I8SWPP --------------------------------------------- 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: Lu Jialin <lujialin4@huawei.com> Signed-off-by: Xiang Yang <xiangyang3@huawei.com> --- kernel/cgroup/cpuset.c | 6 ++++++ kernel/sched/sched.h | 5 +++++ 2 files changed, 11 insertions(+) diff --git a/kernel/cgroup/cpuset.c b/kernel/cgroup/cpuset.c index 4749e0c86c62..38efcc9fe1d1 100644 --- a/kernel/cgroup/cpuset.c +++ b/kernel/cgroup/cpuset.c @@ -43,6 +43,7 @@ #include <linux/sched/isolation.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); @@ -183,6 +184,11 @@ struct cpuset { /* Handle for cpuset.cpus.partition */ struct cgroup_file partition_file; + + KABI_RESERVE(1) + KABI_RESERVE(2) + KABI_RESERVE(3) + KABI_RESERVE(4) }; /* diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index 3de84e95baf1..45d2f023a3d3 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -68,6 +68,7 @@ #include <linux/wait_api.h> #include <linux/wait_bit.h> #include <linux/workqueue_api.h> +#include <linux/kabi.h> #include <trace/events/power.h> #include <trace/events/sched.h> @@ -416,6 +417,10 @@ 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 -- 2.34.1