From d3e48ff22f2d9deb2bad269486e264153e71fc8c Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 3 Aug 2021 16:15:48 +0200
Subject: [PATCH] s390/sclp: replace deprecated CPU-hotplug functions
References: bsc#1189998 (PREEMPT_RT prerequisite backports)
Patch-mainline: v5.15-rc1
Git-commit: 52b6defae7de31aaa960e78e506f882c12b4af53
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.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Link: https://lore.kernel.org/r/20210803141621.780504-6-bigeasy@linutronix.de
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Mel Gorman <mgorman@suse.de>
---
drivers/s390/char/sclp_config.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/s390/char/sclp_config.c b/drivers/s390/char/sclp_config.c
index 039b2074db7e..c365110f2dae 100644
--- a/drivers/s390/char/sclp_config.c
+++ b/drivers/s390/char/sclp_config.c
@@ -50,12 +50,12 @@ static void sclp_cpu_capability_notify(struct work_struct *work)
s390_update_cpu_mhz();
pr_info("CPU capability may have changed\n");
- get_online_cpus();
+ cpus_read_lock();
for_each_online_cpu(cpu) {
dev = get_cpu_device(cpu);
kobject_uevent(&dev->kobj, KOBJ_CHANGE);
}
- put_online_cpus();
+ cpus_read_unlock();
}
static void __ref sclp_cpu_change_notify(struct work_struct *work)