diff --git a/include/linux/sched/task.h b/include/linux/sched/task.h index d744b385108e8ca53678c4d8bad1b1a581c51008..80d5cd3a51494570429d1f7010f67d2556c598ba 100644 --- a/include/linux/sched/task.h +++ b/include/linux/sched/task.h @@ -33,6 +33,7 @@ extern asmlinkage void schedule_tail(struct task_struct *prev); extern void init_idle(struct task_struct *idle, int cpu); extern int sched_fork(unsigned long clone_flags, struct task_struct *p); +extern void sched_post_fork(struct task_struct *p); extern void sched_dead(struct task_struct *p); void __noreturn do_task_dead(void); diff --git a/kernel/fork.c b/kernel/fork.c index 80a7e29920cd126c91539d79ff6ef370635181fc..9fff0c1492473922c9ab7cc00ca968638ad7437e 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -2156,6 +2156,7 @@ static __latent_entropy struct task_struct *copy_process( proc_fork_connector(p); cgroup_post_fork(p); + sched_post_fork(p); cgroup_threadgroup_change_end(current); perf_event_fork(p); diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 41fee321ef83e23964c3b970a4705d0c77c42d5b..6aee9acd9e609c0c00bd0e930f9e3a87f6d3b764 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -2295,8 +2295,6 @@ static inline void init_schedstats(void) {} */ int sched_fork(unsigned long clone_flags, struct task_struct *p) { - unsigned long flags; - __sched_fork(clone_flags, p); /* * We mark the process as NEW here. This guarantees that @@ -2340,6 +2338,26 @@ int sched_fork(unsigned long clone_flags, struct task_struct *p) init_entity_runnable_average(&p->se); +#ifdef CONFIG_SCHED_INFO + if (likely(sched_info_on())) + memset(&p->sched_info, 0, sizeof(p->sched_info)); +#endif +#if defined(CONFIG_SMP) + p->on_cpu = 0; +#endif + init_task_preempt_count(p); +#ifdef CONFIG_SMP + plist_node_init(&p->pushable_tasks, MAX_PRIO); + RB_CLEAR_NODE(&p->pushable_dl_tasks); +#endif + + return 0; +} + +void sched_post_fork(struct task_struct *p) +{ + unsigned long flags; + /* * The child is not yet in the pid-hash so no cgroup attach races, * and the cgroup is pinned to this child due to cgroup_fork() @@ -2357,20 +2375,6 @@ int sched_fork(unsigned long clone_flags, struct task_struct *p) if (p->sched_class->task_fork) p->sched_class->task_fork(p); raw_spin_unlock_irqrestore(&p->pi_lock, flags); - -#ifdef CONFIG_SCHED_INFO - if (likely(sched_info_on())) - memset(&p->sched_info, 0, sizeof(p->sched_info)); -#endif -#if defined(CONFIG_SMP) - p->on_cpu = 0; -#endif - init_task_preempt_count(p); -#ifdef CONFIG_SMP - plist_node_init(&p->pushable_tasks, MAX_PRIO); - RB_CLEAR_NODE(&p->pushable_dl_tasks); -#endif - return 0; } unsigned long to_ratio(u64 period, u64 runtime)