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    Subject[PATCH RFC tip/core/rcu 06/12] rcu: Distinguish between boosting and boosted
    Date
    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 <paulmck@linux.vnet.ibm.com>
    ---
    kernel/rcutiny_plugin.h | 4 ++++
    1 files changed, 4 insertions(+), 0 deletions(-)

    diff --git a/kernel/rcutiny_plugin.h b/kernel/rcutiny_plugin.h
    index 419b796..297aa35 100644
    --- a/kernel/rcutiny_plugin.h
    +++ b/kernel/rcutiny_plugin.h
    @@ -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;
    }
    --
    1.7.0.6


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