From: Chen Hui <judy.chenhui@huawei.com> hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I5KUFB CVE: NA -------------------------------- Add a tag for the task, same as the task group. Signed-off-by: Chen Hui <judy.chenhui@huawei.com> Signed-off-by: Ren Zhijie <renzhijie2@huawei.com> --- include/linux/sched.h | 5 +++++ init/init_task.c | 3 +++ kernel/sched/core.c | 3 +++ 3 files changed, 11 insertions(+) diff --git a/include/linux/sched.h b/include/linux/sched.h index 47f462040f4d..08803b8664b3 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1397,6 +1397,11 @@ struct task_struct { */ randomized_struct_fields_end +#ifdef CONFIG_BPF_SCHED + /* Used to pad the tag of a task */ + long tag; +#endif + KABI_RESERVE(1) KABI_RESERVE(2) KABI_RESERVE(3) diff --git a/init/init_task.c b/init/init_task.c index 5fa18ed59d33..7003426df677 100644 --- a/init/init_task.c +++ b/init/init_task.c @@ -213,6 +213,9 @@ struct task_struct init_task #ifdef CONFIG_SECCOMP_FILTER .seccomp = { .filter_count = ATOMIC_INIT(0) }, #endif +#ifdef CONFIG_BPF_SCHED + .tag = 0, +#endif }; EXPORT_SYMBOL(init_task); diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 2256ac22d26d..8f385aa1c201 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -3113,6 +3113,9 @@ static void __sched_fork(unsigned long clone_flags, struct task_struct *p) #ifdef CONFIG_SMP p->wake_entry.u_flags = CSD_TYPE_TTWU; #endif +#ifdef CONFIG_BPF_SCHED + p->tag = 0; +#endif } DEFINE_STATIC_KEY_FALSE(sched_numa_balancing); -- 2.20.1