powerpc: Move arch_cpu_idle_dead() into smp.c

arch_cpu_idle_dead() is in idle.c, which makes sense, but it's inside
a CONFIG_HOTPLUG_CPU block.

It would be more at home in smp.c, inside the existing
CONFIG_HOTPLUG_CPU block. Note that CONFIG_HOTPLUG_CPU depends on
CONFIG_SMP so even though smp.c is not built for SMP=n builds, that's
fine.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200819015634.1974478-1-mpe@ellerman.id.au

diff --git a/arch/powerpc/kernel/idle.c b/arch/powerpc/kernel/idle.c
index 422e31d..ae0e263 100644 (file)
--- a/arch/powerpc/kernel/idle.c
+++ b/arch/powerpc/kernel/idle.c
@@ -41,14 +41,6 @@ static int __init powersave_off(char *arg)
 }
 __setup("powersave=off", powersave_off);
 
-#ifdef CONFIG_HOTPLUG_CPU
-void arch_cpu_idle_dead(void)
-{
-       sched_preempt_enable_no_resched();
-       cpu_die();
-}
-#endif
-
 void arch_cpu_idle(void)
 {
        ppc64_runlatch_off();

diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index 3d96752..24b0476 100644 (file)
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -1489,6 +1489,12 @@ void __cpu_die(unsigned int cpu)
                smp_ops->cpu_die(cpu);
 }
 
+void arch_cpu_idle_dead(void)
+{
+       sched_preempt_enable_no_resched();
+       cpu_die();
+}
+
 void cpu_die(void)
 {
        /*