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Date:   Tue,  3 Aug 2021 16:16:05 +0200
From:   Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:     linux-kernel@...r.kernel.org
Cc:     tglx@...utronix.de, Peter Zijlstra <peterz@...radead.org>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Julian Wiedmann <jwi@...ux.ibm.com>,
        Karsten Graul <kgraul@...ux.ibm.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, linux-s390@...r.kernel.org,
        netdev@...r.kernel.org
Subject: [PATCH 22/38] net/af_iucv: Replace deprecated CPU-hotplug functions.

The functions get_online_cpus() and put_online_cpus() have been
deprecated during the CPU hotplug rework. They map directly to
cpus_read_lock() and cpus_read_unlock().

Replace deprecated CPU-hotplug functions with the official version.
The behavior remains unchanged.

Cc: Julian Wiedmann <jwi@...ux.ibm.com>
Cc: Karsten Graul <kgraul@...ux.ibm.com>
Cc: "David S. Miller" <davem@...emloft.net>
Cc: Jakub Kicinski <kuba@...nel.org>
Cc: linux-s390@...r.kernel.org
Cc: netdev@...r.kernel.org
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
---
 net/iucv/iucv.c | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/net/iucv/iucv.c b/net/iucv/iucv.c
index e6795d5a546a0..2b29e55a09b92 100644
--- a/net/iucv/iucv.c
+++ b/net/iucv/iucv.c
@@ -500,14 +500,14 @@ static void iucv_setmask_mp(void)
 {
 	int cpu;
 
-	get_online_cpus();
+	cpus_read_lock();
 	for_each_online_cpu(cpu)
 		/* Enable all cpus with a declared buffer. */
 		if (cpumask_test_cpu(cpu, &iucv_buffer_cpumask) &&
 		    !cpumask_test_cpu(cpu, &iucv_irq_cpumask))
 			smp_call_function_single(cpu, iucv_allow_cpu,
 						 NULL, 1);
-	put_online_cpus();
+	cpus_read_unlock();
 }
 
 /**
@@ -540,7 +540,7 @@ static int iucv_enable(void)
 	size_t alloc_size;
 	int cpu, rc;
 
-	get_online_cpus();
+	cpus_read_lock();
 	rc = -ENOMEM;
 	alloc_size = iucv_max_pathid * sizeof(struct iucv_path);
 	iucv_path_table = kzalloc(alloc_size, GFP_KERNEL);
@@ -553,12 +553,12 @@ static int iucv_enable(void)
 	if (cpumask_empty(&iucv_buffer_cpumask))
 		/* No cpu could declare an iucv buffer. */
 		goto out;
-	put_online_cpus();
+	cpus_read_unlock();
 	return 0;
 out:
 	kfree(iucv_path_table);
 	iucv_path_table = NULL;
-	put_online_cpus();
+	cpus_read_unlock();
 	return rc;
 }
 
@@ -571,11 +571,11 @@ static int iucv_enable(void)
  */
 static void iucv_disable(void)
 {
-	get_online_cpus();
+	cpus_read_lock();
 	on_each_cpu(iucv_retrieve_cpu, NULL, 1);
 	kfree(iucv_path_table);
 	iucv_path_table = NULL;
-	put_online_cpus();
+	cpus_read_unlock();
 }
 
 static int iucv_cpu_dead(unsigned int cpu)
@@ -784,7 +784,7 @@ static int iucv_reboot_event(struct notifier_block *this,
 	if (cpumask_empty(&iucv_irq_cpumask))
 		return NOTIFY_DONE;
 
-	get_online_cpus();
+	cpus_read_lock();
 	on_each_cpu_mask(&iucv_irq_cpumask, iucv_block_cpu, NULL, 1);
 	preempt_disable();
 	for (i = 0; i < iucv_max_pathid; i++) {
@@ -792,7 +792,7 @@ static int iucv_reboot_event(struct notifier_block *this,
 			iucv_sever_pathid(i, NULL);
 	}
 	preempt_enable();
-	put_online_cpus();
+	cpus_read_unlock();
 	iucv_disable();
 	return NOTIFY_DONE;
 }
-- 
2.32.0

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