Nicholas Piggin <npig...@gmail.com> writes: > diff --git a/kernel/sched/core.c b/kernel/sched/core.c > index 803c3bc274c4..1f0688ad09d7 100644 > --- a/kernel/sched/core.c > +++ b/kernel/sched/core.c > @@ -2875,6 +2875,12 @@ context_switch(struct rq *rq, struct task_struct *prev, > rq_unpin_lock(rq, rf); > spin_release(&rq->lock.dep_map, 1, _THIS_IP_); > > + /* > + * Some architectures require that a spin lock is taken before > + * _switch. The rq_lock satisfies this condition. See powerpc > + * _switch for details. > + */ > + > /* Here we just switch the register state and the stack. */ > switch_to(prev, next, prev); > barrier();
I dropped this hunk, if you want to merge it you can resend it and get an ack from Peterz. cheers
