Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit f11cc076 authored by Davidlohr Bueso's avatar Davidlohr Bueso Committed by Ingo Molnar
Browse files

sched/core: Drop the unused try_get_task_struct() helper function 



This function was introduced by:

  150593bf ("sched/api: Introduce task_rcu_dereference() and try_get_task_struct()")

... to allow easier usage of task_rcu_dereference(), however no users
were ever added. Drop the helper.

Signed-off-by: default avatarDavidlohr Bueso <dbueso@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: dave@stgolabs.net
Link: http://lkml.kernel.org/r/20170615023730.22827-1-dave@stgolabs.net


Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent 902b3194

include/linux/sched/task.h

+0 −2
Original line number Diff line number Diff line
@@ -95,8 +95,6 @@ static inline void put_task_struct(struct 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;

kernel/exit.c

+0 −13
Original line number Diff line number Diff line
@@ -318,19 +318,6 @@ void rcuwait_wake_up(struct rcuwait *w) 
	rcu_read_unlock();

}



struct task_struct *try_get_task_struct(struct task_struct **ptask)

{

	struct task_struct *task;



	rcu_read_lock();

	task = task_rcu_dereference(ptask);

	if (task)

		get_task_struct(task);

	rcu_read_unlock();



	return task;

}



/*

 * Determine if a process group is "orphaned", according to the POSIX

 * definition in 2.2.2.52.  Orphaned process groups are not to be affected