workqueue: kill RT workqueue

With stop_machine() converted to use cpu_stop, RT workqueue doesn't
have any user left.  Kill RT workqueue support.

Signed-off-by: Tejun Heo <tj@kernel.org>

1 files changed, 0 insertions, 6 deletions

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 327d2deb4451..1a47fbf92fae 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -62,7 +62,6 @@ struct workqueue_struct {
         const char *name;
         int singlethread;
         int freezeable;         /* Freeze threads during suspend */
-        int rt;
 #ifdef CONFIG_LOCKDEP
         struct lockdep_map lockdep_map;
 #endif
@@ -947,7 +946,6 @@ init_cpu_workqueue(struct workqueue_struct *wq, int cpu)
 
 static int create_workqueue_thread(struct cpu_workqueue_struct *cwq, int cpu)
 {
-        struct sched_param param = { .sched_priority = MAX_RT_PRIO-1 };
         struct workqueue_struct *wq = cwq->wq;
         const char *fmt = is_wq_single_threaded(wq) ? "%s" : "%s/%d";
         struct task_struct *p;
@@ -963,8 +961,6 @@ static int create_workqueue_thread(struct cpu_workqueue_struct *cwq, int cpu)
          */
         if (IS_ERR(p))
                 return PTR_ERR(p);
-        if (cwq->wq->rt)
-                sched_setscheduler_nocheck(p, SCHED_FIFO, &param);
         cwq->thread = p;
 
         trace_workqueue_creation(cwq->thread, cpu);
@@ -986,7 +982,6 @@ static void start_workqueue_thread(struct cpu_workqueue_struct *cwq, int cpu)
 struct workqueue_struct *__create_workqueue_key(const char *name,
                                                 int singlethread,
                                                 int freezeable,
-                                                int rt,
                                                 struct lock_class_key *key,
                                                 const char *lock_name)
 {
@@ -1008,7 +1003,6 @@ struct workqueue_struct *__create_workqueue_key(const char *name,
         lockdep_init_map(&wq->lockdep_map, lock_name, key, 0);
         wq->singlethread = singlethread;
         wq->freezeable = freezeable;
-        wq->rt = rt;
         INIT_LIST_HEAD(&wq->list);
 
         if (singlethread) {