slab, workqueue: remove keventd_up() usage

Now that workqueue can handle work item queueing from very early
during boot, there is no need to gate schedule_delayed_work_on() while
!keventd_up().  Remove it.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-mm@kvack.org

1 files changed, 1 insertions, 6 deletions

diff --git a/mm/slab.c b/mm/slab.c
index b67271024135..dc69b6b625b1 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -550,12 +550,7 @@ static void start_cpu_timer(int cpu)
 {
         struct delayed_work *reap_work = &per_cpu(slab_reap_work, cpu);
 
-        /*
-         * When this gets called from do_initcalls via cpucache_init(),
-         * init_workqueues() has already run, so keventd will be setup
-         * at that time.
-         */
-        if (keventd_up() && reap_work->work.func == NULL) {
+        if (reap_work->work.func == NULL) {
                 init_reap_node(cpu);
                 INIT_DEFERRABLE_WORK(reap_work, cache_reap);
                 schedule_delayed_work_on(cpu, reap_work,