sched/headers: Move the get_task_struct()/put_task_struct() and related APIs from...

[karo-tx-linux.git] / include / linux / sched / task.h

diff --git a/include/linux/sched/task.h b/include/linux/sched/task.h
index a33a8121da9a2e4daaf70096b54c79575ee58d83..3886ae64148f1ee69b9936fc5da601844ed6b12b 100644 (file)
--- a/include/linux/sched/task.h
+++ b/include/linux/sched/task.h
@@ -75,6 +75,21 @@ extern long do_fork(unsigned long, unsigned long, unsigned long, int __user *, i
 struct task_struct *fork_idle(int);
 extern pid_t kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
 
+extern void free_task(struct task_struct *tsk);
+
+#define get_task_struct(tsk) do { atomic_inc(&(tsk)->usage); } while(0)
+
+extern void __put_task_struct(struct task_struct *t);
+
+static inline void put_task_struct(struct task_struct *t)
+{
+       if (atomic_dec_and_test(&t->usage))
+               __put_task_struct(t);
+}
+
+struct task_struct *task_rcu_dereference(struct task_struct **ptask);
+struct task_struct *try_get_task_struct(struct task_struct **ptask);
+
 
 #ifdef CONFIG_ARCH_WANTS_DYNAMIC_TASK_STRUCT
 extern int arch_task_struct_size __read_mostly;