netdev - [PATCH net-next 5/5] net/iucv: Replace deprecated CPU-hotplug functions.

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Date:   Mon,  9 Aug 2021 10:30:50 +0200
From:   Karsten Graul <kgraul@...ux.ibm.com>
To:     David Miller <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     netdev@...r.kernel.org, linux-s390@...r.kernel.org,
        Heiko Carstens <hca@...ux.ibm.com>,
        Julian Wiedmann <jwi@...ux.ibm.com>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Subject: [PATCH net-next 5/5] net/iucv: Replace deprecated CPU-hotplug functions.

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

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>
Signed-off-by: Julian Wiedmann <jwi@...ux.ibm.com>
Signed-off-by: Karsten Graul <kgraul@...ux.ibm.com>
---
 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 bebc7d09815d..f3343a8541a5 100644
--- a/net/iucv/iucv.c
+++ b/net/iucv/iucv.c
@@ -502,14 +502,14 @@ 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();
 }
 
 /**
@@ -542,7 +542,7 @@ 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);
@@ -555,12 +555,12 @@ 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;
 }
 
@@ -573,11 +573,11 @@ 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)
@@ -786,7 +786,7 @@ 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++) {
@@ -794,7 +794,7 @@ 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;
 }
-- 
2.25.1