Commit-ID: 6cd534ef8bfe422a5a847b953d1039841509c374 Gitweb: http://git.kernel.org/tip/6cd534ef8bfe422a5a847b953d1039841509c374 Author: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx> AuthorDate: Wed, 10 Dec 2014 07:45:13 -0800 Committer: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx> CommitDate: Tue, 6 Jan 2015 11:02:53 -0800 rcu: Don't scan root rcu_node structure for stalled tasks Now that blocked tasks are no longer migrated to the root rcu_node structure, there is no need to scan the root rcu_node structure for blocked tasks stalling the current grace period. This commit therefore removes this scan. Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx> --- kernel/rcu/tree.c | 9 --------- 1 file changed, 9 deletions(-) diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index 24d3c67..4ed2c28 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -1107,15 +1107,6 @@ static void print_other_cpu_stall(struct rcu_state *rsp) raw_spin_unlock_irqrestore(&rnp->lock, flags); } - /* - * Now rat on any tasks that got kicked up to the root rcu_node - * due to CPU offlining. - */ - rnp = rcu_get_root(rsp); - raw_spin_lock_irqsave(&rnp->lock, flags); - ndetected += rcu_print_task_stall(rnp); - raw_spin_unlock_irqrestore(&rnp->lock, flags); - print_cpu_stall_info_end(); for_each_possible_cpu(cpu) totqlen += per_cpu_ptr(rsp->rda, cpu)->qlen; -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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