1 files changed, 29 insertions, 1 deletions

diff --git a/kernel/user.c b/kernel/user.c
index 7132022a040c..debce602bfdd 100644
--- a/kernel/user.c
+++ b/kernel/user.c
@@ -101,7 +101,7 @@ static int sched_create_user(struct user_struct *up)
 {
         int rc = 0;
 
-        up->tg = sched_create_group();
+        up->tg = sched_create_group(&root_task_group);
         if (IS_ERR(up->tg))
                 rc = -ENOMEM;
 
@@ -193,6 +193,33 @@ static ssize_t cpu_rt_runtime_store(struct kobject *kobj,
 
 static struct kobj_attribute cpu_rt_runtime_attr =
         __ATTR(cpu_rt_runtime, 0644, cpu_rt_runtime_show, cpu_rt_runtime_store);
+
+static ssize_t cpu_rt_period_show(struct kobject *kobj,
+                                   struct kobj_attribute *attr,
+                                   char *buf)
+{
+        struct user_struct *up = container_of(kobj, struct user_struct, kobj);
+
+        return sprintf(buf, "%lu\n", sched_group_rt_period(up->tg));
+}
+
+static ssize_t cpu_rt_period_store(struct kobject *kobj,
+                                    struct kobj_attribute *attr,
+                                    const char *buf, size_t size)
+{
+        struct user_struct *up = container_of(kobj, struct user_struct, kobj);
+        unsigned long rt_period;
+        int rc;
+
+        sscanf(buf, "%lu", &rt_period);
+
+        rc = sched_group_set_rt_period(up->tg, rt_period);
+
+        return (rc ? rc : size);
+}
+
+static struct kobj_attribute cpu_rt_period_attr =
+        __ATTR(cpu_rt_period, 0644, cpu_rt_period_show, cpu_rt_period_store);
 #endif
 
 /* default attributes per uid directory */
@@ -202,6 +229,7 @@ static struct attribute *uids_attributes[] = {
 #endif
 #ifdef CONFIG_RT_GROUP_SCHED
         &cpu_rt_runtime_attr.attr,
+        &cpu_rt_period_attr.attr,
 #endif
         NULL
 };