Commit a15ec57c authored by Paul E. McKenney's avatar Paul E. McKenney
Browse files

rcuscale: Add RCU Tasks Rude testing 



Add a "tasks-rude" option to the rcuscale.scale_type module parameter.

Signed-off-by: default avatarPaul E. McKenney <paulmck@kernel.org>
parent 271a8467

kernel/rcu/rcu.h

+3 −0
Original line number Diff line number Diff line
@@ -508,6 +508,9 @@ void show_rcu_tasks_gp_kthreads(void); 
# ifdef CONFIG_TASKS_RCU

struct task_struct *get_rcu_tasks_gp_kthread(void);

# endif // # ifdef CONFIG_TASKS_RCU

# ifdef CONFIG_TASKS_RUDE_RCU

struct task_struct *get_rcu_tasks_rude_gp_kthread(void);

# endif // # ifdef CONFIG_TASKS_RUDE_RCU

#else /* #ifdef CONFIG_TASKS_RCU_GENERIC */

static inline void show_rcu_tasks_gp_kthreads(void) {}

#endif /* #else #ifdef CONFIG_TASKS_RCU_GENERIC */

kernel/rcu/rcuscale.c

+30 −1
Original line number Diff line number Diff line
@@ -310,6 +310,35 @@ static struct rcu_scale_ops tasks_ops = { 


#endif // #else // #ifdef CONFIG_TASKS_RCU



#ifdef CONFIG_TASKS_RUDE_RCU



/*

 * Definitions for RCU-tasks-rude scalability testing.

 */



static struct rcu_scale_ops tasks_rude_ops = {

	.ptype		= RCU_TASKS_RUDE_FLAVOR,

	.init		= rcu_sync_scale_init,

	.readlock	= tasks_scale_read_lock,

	.readunlock	= tasks_scale_read_unlock,

	.get_gp_seq	= rcu_no_completed,

	.gp_diff	= rcu_seq_diff,

	.async		= call_rcu_tasks_rude,

	.gp_barrier	= rcu_barrier_tasks_rude,

	.sync		= synchronize_rcu_tasks_rude,

	.exp_sync	= synchronize_rcu_tasks_rude,

	.rso_gp_kthread	= get_rcu_tasks_rude_gp_kthread,

	.name		= "tasks-rude"

};



#define TASKS_RUDE_OPS &tasks_rude_ops,



#else // #ifdef CONFIG_TASKS_RUDE_RCU



#define TASKS_RUDE_OPS



#endif // #else // #ifdef CONFIG_TASKS_RUDE_RCU



#ifdef CONFIG_TASKS_TRACE_RCU



/*
@@ -913,7 +942,7 @@ rcu_scale_init(void) 
	long i;

	int firsterr = 0;

	static struct rcu_scale_ops *scale_ops[] = {

		&rcu_ops, &srcu_ops, &srcud_ops, TASKS_OPS TASKS_TRACING_OPS

		&rcu_ops, &srcu_ops, &srcud_ops, TASKS_OPS TASKS_RUDE_OPS TASKS_TRACING_OPS

	};



	if (!torture_init_begin(scale_type, verbose))

kernel/rcu/tasks.h

+7 −0
Original line number Diff line number Diff line
@@ -1194,6 +1194,13 @@ void show_rcu_tasks_rude_gp_kthread(void) 
}

EXPORT_SYMBOL_GPL(show_rcu_tasks_rude_gp_kthread);

#endif // !defined(CONFIG_TINY_RCU)



struct task_struct *get_rcu_tasks_rude_gp_kthread(void)

{

	return rcu_tasks_rude.kthread_ptr;

}

EXPORT_SYMBOL_GPL(get_rcu_tasks_rude_gp_kthread);



#endif /* #ifdef CONFIG_TASKS_RUDE_RCU */



////////////////////////////////////////////////////////////////////////

tools/testing/selftests/rcutorture/configs/rcuscale/CFcommon

+2 −0
Original line number Diff line number Diff line
@@ -2,5 +2,7 @@ CONFIG_RCU_SCALE_TEST=y 
CONFIG_PRINTK_TIME=y

CONFIG_FORCE_TASKS_RCU=y

#CHECK#CONFIG_TASKS_RCU=y

CONFIG_FORCE_TASKS_RUDE_RCU=y

#CHECK#CONFIG_TASKS_RUDE_RCU=y

CONFIG_FORCE_TASKS_TRACE_RCU=y

#CHECK#CONFIG_TASKS_TRACE_RCU=y