From 6cbf5967a6669a1a31a9f204d154eeff9aff6b6b Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 3 Aug 2021 16:15:49 +0200
Subject: [PATCH] x86/mmiotrace: Replace deprecated CPU-hotplug functions.
References: bsc#1189998 (PREEMPT_RT prerequisite backports)
Patch-mainline: v5.15-rc1
Git-commit: 77ad320cfb2ac172eeba32a77a388281b003ec17
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>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Karol Herbst <kherbst@redhat.com>
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Link: https://lore.kernel.org/r/20210803141621.780504-7-bigeasy@linutronix.de
Signed-off-by: Mel Gorman <mgorman@suse.de>
---
arch/x86/mm/mmio-mod.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/mm/mmio-mod.c b/arch/x86/mm/mmio-mod.c
index cd768dafca9e..933a2ebad471 100644
--- a/arch/x86/mm/mmio-mod.c
+++ b/arch/x86/mm/mmio-mod.c
@@ -376,12 +376,12 @@ static void enter_uniprocessor(void)
goto out;
}
- get_online_cpus();
+ cpus_read_lock();
cpumask_copy(downed_cpus, cpu_online_mask);
cpumask_clear_cpu(cpumask_first(cpu_online_mask), downed_cpus);
if (num_online_cpus() > 1)
pr_notice("Disabling non-boot CPUs...\n");
- put_online_cpus();
+ cpus_read_unlock();
for_each_cpu(cpu, downed_cpus) {
err = remove_cpu(cpu);