rcu: fix tracing bug thinko on boost-balk attribution

The rcu_initiate_boost_trace() function mis-attributed refusals to
initiate RCU priority boosting that were in fact due to its not yet
being time to boost.  This patch fixes the faulty comparison.

Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

diff --git a/kernel/rcutree_plugin.h b/kernel/rcutree_plugin.h
index 22a6a46..a21413d 100644 (file)
--- a/kernel/rcutree_plugin.h
+++ b/kernel/rcutree_plugin.h
@@ -1086,7 +1086,7 @@ static void rcu_initiate_boost_trace(struct rcu_node *rnp)
        else if (rnp->gp_tasks != NULL && rnp->qsmask != 0)
                rnp->n_balk_notblocked++;
        else if (rnp->gp_tasks != NULL &&
-                ULONG_CMP_GE(jiffies, rnp->boost_time))
+                ULONG_CMP_LT(jiffies, rnp->boost_time))
                rnp->n_balk_notyet++;
        else
                rnp->n_balk_nos++;