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FROMGIT: arm: Move ipi_teardown() to a CONFIG_HOTPLUG_CPU section

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ipi_teardown() is only used when CONFIG_HOTPLUG_CPU is enabled.
Move the function to a location guarded by this config option.

Signed-off-by: Marc Zyngier <maz@kernel.org>

Bug: 140053385
(cherry picked from commit ac15a54e03
 https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git irq/ipi-as-irq)
Change-Id: I9018dba7a6f7ff2a451f2405609d8d02b9bf767d
Signed-off-by: Eric Biggers <ebiggers@google.com>
This commit is contained in:
Marc Zyngier 2020-09-18 17:19:46 +01:00 committed by Eric Biggers
parent 45822614ed
commit 207021f2ce
1 changed files with 11 additions and 12 deletions
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23
arch/arm/kernel/smp.c
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@ -85,7 +85,6 @@ static int nr_ipi __read_mostly = NR_IPI;
static struct irq_desc *ipi_desc[MAX_IPI] __read_mostly;
static void ipi_setup(int cpu);
static void ipi_teardown(int cpu);
static DECLARE_COMPLETION(cpu_running);
@ -236,6 +235,17 @@ int platform_can_hotplug_cpu(unsigned int cpu)
return cpu != 0;
}
static void ipi_teardown(int cpu)
{
int i;
if (WARN_ON_ONCE(!ipi_irq_base))
return;
for (i = 0; i < nr_ipi; i++)
disable_percpu_irq(ipi_irq_base + i);
}
/*
* __cpu_disable runs on the processor to be shutdown.
*/
@ -707,17 +717,6 @@ static void ipi_setup(int cpu)
enable_percpu_irq(ipi_irq_base + i, 0);
}
static void ipi_teardown(int cpu)
{
int i;
if (WARN_ON_ONCE(!ipi_irq_base))
return;
for (i = 0; i < nr_ipi; i++)
disable_percpu_irq(ipi_irq_base + i);
}
void __init set_smp_ipi_range(int ipi_base, int n)
{
int i;