[PATCH v3 8/9] sched: Don't reinvent the wheel but use existing llist API

[Byungchul Park]

Although llist provides proper APIs, they are not used. Make them used.

Signed-off-by: Byungchul Park <byungchul.p...@lge.com>
---
 kernel/sched/core.c | 15 +++------------
 1 file changed, 3 insertions(+), 12 deletions(-)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index d01f9d0..8938125 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -1773,7 +1773,7 @@ void sched_ttwu_pending(void)
 {
        struct rq *rq = this_rq();
        struct llist_node *llist = llist_del_all(&rq->wake_list);
-       struct task_struct *p;
+       struct task_struct *p, *t;
        unsigned long flags;
        struct rq_flags rf;
 
@@ -1783,17 +1783,8 @@ void sched_ttwu_pending(void)
        raw_spin_lock_irqsave(&rq->lock, flags);
        rq_pin_lock(rq, &rf);
 
-       while (llist) {
-               int wake_flags = 0;
-
-               p = llist_entry(llist, struct task_struct, wake_entry);
-               llist = llist_next(llist);
-
-               if (p->sched_remote_wakeup)
-                       wake_flags = WF_MIGRATED;
-
-               ttwu_do_activate(rq, p, wake_flags, &rf);
-       }
+       llist_for_each_entry_safe(p, t, llist, wake_entry)
+               ttwu_do_activate(rq, p, p->sched_remote_wakeup ? WF_MIGRATED : 
0, &rf);
 
        rq_unpin_lock(rq, &rf);
        raw_spin_unlock_irqrestore(&rq->lock, flags);
-- 
1.9.1