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Commit d4829cd5 authored by Paul E. McKenney's avatar Paul E. McKenney Committed by Linus Torvalds
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[PATCH] remove get_task_struct_rcu() 



The latest set of signal-RCU patches does not use get_task_struct_rcu().
Attached is a patch that removes it.

Signed-off-by: default avatar"Paul E. McKenney" <paulmck@us.ibm.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 2d89c929

include/linux/sched.h

+0 −12
Original line number Original line Diff line number Diff line
@@ -878,18 +878,6 @@ extern void free_task(struct task_struct *tsk); 
extern void __put_task_struct(struct task_struct *tsk);

extern void __put_task_struct(struct task_struct *tsk);

#define get_task_struct(tsk) do { atomic_inc(&(tsk)->usage); } while(0)

#define get_task_struct(tsk) do { atomic_inc(&(tsk)->usage); } while(0)





static inline int get_task_struct_rcu(struct task_struct *t)

{

	int oldusage;



	do {

		oldusage = atomic_read(&t->usage);

		if (oldusage == 0)

			return 0;

	} while (cmpxchg(&t->usage.counter, oldusage, oldusage+1) != oldusage);

	return 1;

}



extern void __put_task_struct_cb(struct rcu_head *rhp);

extern void __put_task_struct_cb(struct rcu_head *rhp);





static inline void put_task_struct(struct task_struct *t)

static inline void put_task_struct(struct task_struct *t)