[PATCH 09/16] rcu: Remove redundant check for online cpu

[Pranith Kumar]

There are two checks for an online CPU if two if() conditions. This commit
simplies this by replacing it with only one check for the online CPU.

Signed-off-by: Pranith Kumar <bobby.prani@xxxxxxxxx>
---
 kernel/rcu/tree.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index 5dcbf36..8d598a2 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -2602,15 +2602,18 @@ static void __call_rcu_core(struct rcu_state *rsp, struct rcu_data *rdp,
 {
 	bool needwake;
 
+	if (!cpu_online(smp_processor_id()))
+		return;
+
 	/*
 	 * If called from an extended quiescent state, invoke the RCU
 	 * core in order to force a re-evaluation of RCU's idleness.
 	 */
-	if (!rcu_is_watching() && cpu_online(smp_processor_id()))
+	if (!rcu_is_watching())
 		invoke_rcu_core();
 
-	/* If interrupts were disabled or CPU offline, don't invoke RCU core. */
-	if (irqs_disabled_flags(flags) || cpu_is_offline(smp_processor_id()))
+	/* If interrupts were disabled, don't invoke RCU core. */
+	if (irqs_disabled_flags(flags))
 		return;
 
 	/*
-- 
2.0.0.rc2

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