From: Paul E. McKenney <paulmck@kernel.org>
Date: Fri, 10 Apr 2020 22:52:53 +0000 (-0700)
Subject: rcu: Convert rcu_initiate_boost() ULONG_CMP_GE() to time_after()
X-Git-Tag: v5.8-rc1~227^2~17^2~2
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=7b2413111a630469282c427033818977515ea592;p=users%2Fwilly%2Fxarray.git

rcu: Convert rcu_initiate_boost() ULONG_CMP_GE() to time_after()

This commit converts the ULONG_CMP_GE() in rcu_initiate_boost() to
time_after() to reflect the fact that it is comparing a timestamp to
the jiffies counter.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
---

diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h
index 664d0aa48edb..5cd27c2916c0 100644
--- a/kernel/rcu/tree_plugin.h
+++ b/kernel/rcu/tree_plugin.h
@@ -1080,7 +1080,7 @@ static void rcu_initiate_boost(struct rcu_node *rnp, unsigned long flags)
 	    (rnp->gp_tasks != NULL &&
 	     rnp->boost_tasks == NULL &&
 	     rnp->qsmask == 0 &&
-	     (ULONG_CMP_GE(jiffies, rnp->boost_time) || rcu_state.cbovld))) {
+	     (!time_after(rnp->boost_time, jiffies) || rcu_state.cbovld))) {
 		if (rnp->exp_tasks == NULL)
 			WRITE_ONCE(rnp->boost_tasks, rnp->gp_tasks);
 		raw_spin_unlock_irqrestore_rcu_node(rnp, flags);