linux-kernel - [PATCH tip/core/rcu 2/3] cpu/hotplug: Get rid of CPU

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Date:   Mon, 22 Aug 2016 08:38:51 -0700
From:   "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:     linux-kernel@...r.kernel.org
Cc:     mingo@...nel.org, jiangshanlai@...il.com, dipankar@...ibm.com,
        akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com,
        josh@...htriplett.org, tglx@...utronix.de, peterz@...radead.org,
        rostedt@...dmis.org, dhowells@...hat.com, edumazet@...gle.com,
        dvhart@...ux.intel.com, fweisbec@...il.com, oleg@...hat.com,
        bobby.prani@...il.com,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Subject: [PATCH tip/core/rcu 2/3] cpu/hotplug: Get rid of CPU_STARTING reference

From: Sebastian Andrzej Siewior <bigeasy@...utronix.de>

CPU_STARTING is scheduled for removal. There is no use of it in drivers
and just compatibility use core code. This patch removes it from an
RCU-related comment.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
---
 kernel/cpu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/cpu.c b/kernel/cpu.c
index 9482ceb928e0..ff8bc3817dde 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -889,7 +889,7 @@ void notify_cpu_starting(unsigned int cpu)
 	struct cpuhp_cpu_state *st = per_cpu_ptr(&cpuhp_state, cpu);
 	enum cpuhp_state target = min((int)st->target, CPUHP_AP_ONLINE);
 
-	rcu_cpu_starting(cpu);  /* All CPU_STARTING notifiers can use RCU. */
+	rcu_cpu_starting(cpu);	/* Enables RCU usage on this CPU. */
 	while (st->state < target) {
 		struct cpuhp_step *step;
 
-- 
2.5.2