1 files changed, 36 insertions, 15 deletions

diff --git a/include/linux/init_task.h b/include/linux/init_task.h
index 1f43fa56f600..580f70c02391 100644
--- a/include/linux/init_task.h
+++ b/include/linux/init_task.h
@@ -12,9 +12,24 @@
 #include <linux/securebits.h>
 #include <net/net_namespace.h>
 
+#ifdef CONFIG_SMP
+# define INIT_PUSHABLE_TASKS(tsk)                                       \
+        .pushable_tasks = PLIST_NODE_INIT(tsk.pushable_tasks, MAX_PRIO),
+#else
+# define INIT_PUSHABLE_TASKS(tsk)
+#endif
+
 extern struct files_struct init_files;
 extern struct fs_struct init_fs;
 
+#ifdef CONFIG_CGROUPS
+#define INIT_THREADGROUP_FORK_LOCK(sig)                                 \
+        .threadgroup_fork_lock =                                        \
+                __RWSEM_INITIALIZER(sig.threadgroup_fork_lock),
+#else
+#define INIT_THREADGROUP_FORK_LOCK(sig)
+#endif
+
 #define INIT_SIGNALS(sig) {                                             \
         .nr_threads     = 1,                                            \
         .wait_chldexit  = __WAIT_QUEUE_HEAD_INITIALIZER(sig.wait_chldexit),\
@@ -29,6 +44,9 @@ extern struct fs_struct init_fs;
                 .running = 0,                                           \
                 .lock = __SPIN_LOCK_UNLOCKED(sig.cputimer.lock),        \
         },                                                              \
+        .cred_guard_mutex =                                             \
+                 __MUTEX_INITIALIZER(sig.cred_guard_mutex),             \
+        INIT_THREADGROUP_FORK_LOCK(sig)                                 \
 }
 
 extern struct nsproxy init_nsproxy;
@@ -74,19 +92,25 @@ extern struct group_info init_groups;
 #define INIT_IDS
 #endif
 
-/*
- * Because of the reduced scope of CAP_SETPCAP when filesystem
- * capabilities are in effect, it is safe to allow CAP_SETPCAP to
- * be available in the default configuration.
- */
-# define CAP_INIT_BSET  CAP_FULL_SET
-
+#ifdef CONFIG_RCU_BOOST
+#define INIT_TASK_RCU_BOOST()                                           \
+        .rcu_boost_mutex = NULL,
+#else
+#define INIT_TASK_RCU_BOOST()
+#endif
 #ifdef CONFIG_TREE_PREEMPT_RCU
+#define INIT_TASK_RCU_TREE_PREEMPT()                                    \
+        .rcu_blocked_node = NULL,
+#else
+#define INIT_TASK_RCU_TREE_PREEMPT(tsk)
+#endif
+#ifdef CONFIG_PREEMPT_RCU
 #define INIT_TASK_RCU_PREEMPT(tsk)                                      \
         .rcu_read_lock_nesting = 0,                                     \
         .rcu_read_unlock_special = 0,                                   \
-        .rcu_blocked_node = NULL,                                       \
-        .rcu_node_entry = LIST_HEAD_INIT(tsk.rcu_node_entry),
+        .rcu_node_entry = LIST_HEAD_INIT(tsk.rcu_node_entry),           \
+        INIT_TASK_RCU_TREE_PREEMPT()                                    \
+        INIT_TASK_RCU_BOOST()
 #else
 #define INIT_TASK_RCU_PREEMPT(tsk)
 #endif
@@ -112,7 +136,6 @@ extern struct cred init_cred;
         .stack          = &init_thread_info,                            \
         .usage          = ATOMIC_INIT(2),                               \
         .flags          = PF_KTHREAD,                                   \
-        .lock_depth     = -1,                                           \
         .prio           = MAX_PRIO-20,                                  \
         .static_prio    = MAX_PRIO-20,                                  \
         .normal_prio    = MAX_PRIO-20,                                  \
@@ -129,7 +152,7 @@ extern struct cred init_cred;
                 .nr_cpus_allowed = NR_CPUS,                             \
         },                                                              \
         .tasks          = LIST_HEAD_INIT(tsk.tasks),                    \
-        .pushable_tasks = PLIST_NODE_INIT(tsk.pushable_tasks, MAX_PRIO), \
+        INIT_PUSHABLE_TASKS(tsk)                                        \
         .ptraced        = LIST_HEAD_INIT(tsk.ptraced),                  \
         .ptrace_entry   = LIST_HEAD_INIT(tsk.ptrace_entry),             \
         .real_parent    = &tsk,                                         \
@@ -137,10 +160,8 @@ extern struct cred init_cred;
         .children       = LIST_HEAD_INIT(tsk.children),                 \
         .sibling        = LIST_HEAD_INIT(tsk.sibling),                  \
         .group_leader   = &tsk,                                         \
-        .real_cred      = &init_cred,                                   \
-        .cred           = &init_cred,                                   \
-        .cred_guard_mutex =                                             \
-                 __MUTEX_INITIALIZER(tsk.cred_guard_mutex),             \
+        RCU_INIT_POINTER(.real_cred, &init_cred),                       \
+        RCU_INIT_POINTER(.cred, &init_cred),                            \
         .comm           = "swapper",                                    \
         .thread         = INIT_THREAD,                                  \
         .fs             = &init_fs,                                     \