diff options
| -rw-r--r-- | kernel/sched/core.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index cde848149dd6..b4935600cd85 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -2309,15 +2309,14 @@ static inline void post_schedule(struct rq *rq) asmlinkage __visible void schedule_tail(struct task_struct *prev) __releases(rq->lock) { - struct rq *rq = this_rq(); + struct rq *rq; + /* finish_task_switch() drops rq->lock and enables preemtion */ + preempt_disable(); + rq = this_rq(); finish_task_switch(rq, prev); - - /* - * FIXME: do we need to worry about rq being invalidated by the - * task_switch? - */ post_schedule(rq); + preempt_enable(); if (current->set_child_tid) put_user(task_pid_vnr(current), current->set_child_tid); |