Merge tag 'please-pull-sys_bpf' of git://git.kernel.org/pub/scm/linux/kernel/git...

[firefly-linux-kernel-4.4.55.git] / kernel / sched / sched.h

diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index 16e1ca9cb7e891515aa323b515cd347587029ae9..6130251de28013a06dd9ce1aeb076a6a7b86c7c3 100644 (file)
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -975,7 +975,6 @@ static inline int task_on_rq_migrating(struct task_struct *p)
 # define finish_arch_post_lock_switch()        do { } while (0)
 #endif
 
-#ifndef __ARCH_WANT_UNLOCKED_CTXSW
 static inline void prepare_lock_switch(struct rq *rq, struct task_struct *next)
 {
 #ifdef CONFIG_SMP
@@ -1013,35 +1012,6 @@ static inline void finish_lock_switch(struct rq *rq, struct task_struct *prev)
        raw_spin_unlock_irq(&rq->lock);
 }
 
-#else /* __ARCH_WANT_UNLOCKED_CTXSW */
-static inline void prepare_lock_switch(struct rq *rq, struct task_struct *next)
-{
-#ifdef CONFIG_SMP
-       /*
-        * We can optimise this out completely for !SMP, because the
-        * SMP rebalancing from interrupt is the only thing that cares
-        * here.
-        */
-       next->on_cpu = 1;
-#endif
-       raw_spin_unlock(&rq->lock);
-}
-
-static inline void finish_lock_switch(struct rq *rq, struct task_struct *prev)
-{
-#ifdef CONFIG_SMP
-       /*
-        * After ->on_cpu is cleared, the task can be moved to a different CPU.
-        * We must ensure this doesn't happen until the switch is completely
-        * finished.
-        */
-       smp_wmb();
-       prev->on_cpu = 0;
-#endif
-       local_irq_enable();
-}
-#endif /* __ARCH_WANT_UNLOCKED_CTXSW */
-
 /*
  * wake flags
  */