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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: Paul E. McKenney <paul.mckenney@linaro.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
This commit is contained in:
Paul E. McKenney 2010-11-04 14:55:26 -07:00 committed by Paul E. McKenney
parent 8e79e1f961
commit e940cc804e
1 changed files with 4 additions and 0 deletions
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4
kernel/rcutiny_plugin.h
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@ -229,6 +229,9 @@ static void show_tiny_preempt_stats(struct seq_file *m)
seq_puts(m, "no");
break;
case 1:
seq_puts(m, "begun");
break;
case 2:
seq_puts(m, "done");
break;
default:
@ -284,6 +287,7 @@ static int rcu_boost(void)
raw_local_irq_restore(flags);
rt_mutex_lock(&mtx);
RCU_TRACE(rcu_preempt_ctrlblk.n_tasks_boosted++);
rcu_preempt_ctrlblk.boosted_this_gp++;
rt_mutex_unlock(&mtx);
return rcu_preempt_ctrlblk.boost_tasks != NULL;
}