1 files changed, 0 insertions, 62 deletions

diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c
index 9908dacf9229..844861368cd5 100644
--- a/arch/arm/kernel/irq.c
+++ b/arch/arm/kernel/irq.c
@@ -31,7 +31,6 @@
 #include <linux/smp.h>
 #include <linux/init.h>
 #include <linux/seq_file.h>
-#include <linux/ratelimit.h>
 #include <linux/errno.h>
 #include <linux/list.h>
 #include <linux/kallsyms.h>
@@ -109,64 +108,3 @@ int __init arch_probe_nr_irqs(void)
         return nr_irqs;
 }
 #endif
-
-#ifdef CONFIG_HOTPLUG_CPU
-static bool migrate_one_irq(struct irq_desc *desc)
-{
-        struct irq_data *d = irq_desc_get_irq_data(desc);
-        const struct cpumask *affinity = irq_data_get_affinity_mask(d);
-        struct irq_chip *c;
-        bool ret = false;
-
-        /*
-         * If this is a per-CPU interrupt, or the affinity does not
-         * include this CPU, then we have nothing to do.
-         */
-        if (irqd_is_per_cpu(d) || !cpumask_test_cpu(smp_processor_id(), affinity))
-                return false;
-
-        if (cpumask_any_and(affinity, cpu_online_mask) >= nr_cpu_ids) {
-                affinity = cpu_online_mask;
-                ret = true;
-        }
-
-        c = irq_data_get_irq_chip(d);
-        if (!c->irq_set_affinity)
-                pr_debug("IRQ%u: unable to set affinity\n", d->irq);
-        else if (c->irq_set_affinity(d, affinity, false) == IRQ_SET_MASK_OK && ret)
-                cpumask_copy(irq_data_get_affinity_mask(d), affinity);
-
-        return ret;
-}
-
-/*
- * The current CPU has been marked offline.  Migrate IRQs off this CPU.
- * If the affinity settings do not allow other CPUs, force them onto any
- * available CPU.
- *
- * Note: we must iterate over all IRQs, whether they have an attached
- * action structure or not, as we need to get chained interrupts too.
- */
-void migrate_irqs(void)
-{
-        unsigned int i;
-        struct irq_desc *desc;
-        unsigned long flags;
-
-        local_irq_save(flags);
-
-        for_each_irq_desc(i, desc) {
-                bool affinity_broken;
-
-                raw_spin_lock(&desc->lock);
-                affinity_broken = migrate_one_irq(desc);
-                raw_spin_unlock(&desc->lock);
-
-                if (affinity_broken)
-                        pr_warn_ratelimited("IRQ%u no longer affine to CPU%u\n",
-                                i, smp_processor_id());
-        }
-
-        local_irq_restore(flags);
-}
-#endif /* CONFIG_HOTPLUG_CPU */