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Commit e940cc80 authored by Paul E. McKenney's avatar Paul E. McKenney Committed by Paul E. McKenney
Browse files

rcu: Distinguish between boosting and boosted 



RCU priority boosting's tracing did not distinguish between ongoing
boosting and completion of boosting.  This commit therefore adds this
capability.

Signed-off-by: default avatarPaul E. McKenney <paul.mckenney@linaro.org>
Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
parent 8e79e1f9

kernel/rcutiny_plugin.h

+4 −0
Original line number Original line Diff line number Diff line
@@ -229,6 +229,9 @@ static void show_tiny_preempt_stats(struct seq_file *m) 
		seq_puts(m, "no");

		seq_puts(m, "no");

		break;

		break;

	case 1:

	case 1:

		seq_puts(m, "begun");

		break;

	case 2:

		seq_puts(m, "done");

		seq_puts(m, "done");

		break;

		break;

	default:

	default:
@@ -284,6 +287,7 @@ static int rcu_boost(void) 
	raw_local_irq_restore(flags);

	raw_local_irq_restore(flags);

	rt_mutex_lock(&mtx);

	rt_mutex_lock(&mtx);

	RCU_TRACE(rcu_preempt_ctrlblk.n_tasks_boosted++);

	RCU_TRACE(rcu_preempt_ctrlblk.n_tasks_boosted++);

	rcu_preempt_ctrlblk.boosted_this_gp++;

	rt_mutex_unlock(&mtx);

	rt_mutex_unlock(&mtx);

	return rcu_preempt_ctrlblk.boost_tasks != NULL;

	return rcu_preempt_ctrlblk.boost_tasks != NULL;

}

}