Apply preempt_rt patch-4.9-rt1.patch.xz

[zynq/linux.git] / kernel / cgroup.c

diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 85bc9beb046d9a6deda2e3564f4d5bd01d6fc27b..3b8da75ba2e0e6920b47c1dc61f85efca1182599 100644 (file)
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -5040,10 +5040,10 @@ static void css_free_rcu_fn(struct rcu_head *rcu_head)
        queue_work(cgroup_destroy_wq, &css->destroy_work);
 }
 
-static void css_release_work_fn(struct work_struct *work)
+static void css_release_work_fn(struct swork_event *sev)
 {
        struct cgroup_subsys_state *css =
-               container_of(work, struct cgroup_subsys_state, destroy_work);
+               container_of(sev, struct cgroup_subsys_state, destroy_swork);
        struct cgroup_subsys *ss = css->ss;
        struct cgroup *cgrp = css->cgroup;
 
@@ -5086,8 +5086,8 @@ static void css_release(struct percpu_ref *ref)
        struct cgroup_subsys_state *css =
                container_of(ref, struct cgroup_subsys_state, refcnt);
 
-       INIT_WORK(&css->destroy_work, css_release_work_fn);
-       queue_work(cgroup_destroy_wq, &css->destroy_work);
+       INIT_SWORK(&css->destroy_swork, css_release_work_fn);
+       swork_queue(&css->destroy_swork);
 }
 
 static void init_and_link_css(struct cgroup_subsys_state *css,
@@ -5742,6 +5742,7 @@ static int __init cgroup_wq_init(void)
         */
        cgroup_destroy_wq = alloc_workqueue("cgroup_destroy", 0, 1);
        BUG_ON(!cgroup_destroy_wq);
+       BUG_ON(swork_get());
 
        /*
         * Used to destroy pidlists and separate to serve as flush domain.