rcu: Make TASKS_RCU handle tasks that are almost done exiting

[mirror_ubuntu-zesty-kernel.git] / include / linux / rcupdate.h

diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h
index 640152fedcdec7076e3794a4d293acd2a0157324..54b2ebb203133673d269f54ba6804f6ac000478d 100644 (file)
--- a/include/linux/rcupdate.h
+++ b/include/linux/rcupdate.h
@@ -321,6 +321,8 @@ static inline void rcu_user_hooks_switch(struct task_struct *prev,
  * macro rather than an inline function to avoid #include hell.
  */
 #ifdef CONFIG_TASKS_RCU
+#define TASKS_RCU(x) x
+extern struct srcu_struct tasks_rcu_exit_srcu;
 #define rcu_note_voluntary_context_switch(t) \
        do { \
                preempt_disable(); /* Exclude synchronize_sched(); */ \
@@ -329,6 +331,7 @@ static inline void rcu_user_hooks_switch(struct task_struct *prev,
                preempt_enable(); \
        } while (0)
 #else /* #ifdef CONFIG_TASKS_RCU */
+#define TASKS_RCU(x) do { } while (0)
 #define rcu_note_voluntary_context_switch(t)   do { } while (0)
 #endif /* #else #ifdef CONFIG_TASKS_RCU */