x86: Remove create/destroy_irq()

No more users. Remove the cruft

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Grant Likely <grant.likely@linaro.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: x86@kernel.org
Link: http://lkml.kernel.org/r/20140507154336.760446122@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

arch/x86/kernel/apic/io_apic.c

@@ -281,18 +281,6 @@ static struct irq_cfg *alloc_irq_and_cfg_at(unsigned int at, int node)
 	return cfg;
 }
 
-static int alloc_irqs_from(unsigned int from, unsigned int count, int node)
-{
-	return irq_alloc_descs_from(from, count, node);
-}
-
-static void free_irq_at(unsigned int at, struct irq_cfg *cfg)
-{
-	free_irq_cfg(at, cfg);
-	irq_free_desc(at);
-}
-
-
 struct io_apic {
 	unsigned int index;
 	unsigned int unused[3];
@@ -2916,100 +2904,8 @@ static int __init ioapic_init_ops(void)
 device_initcall(ioapic_init_ops);
 
 /*
- * Dynamic irq allocate and deallocation
+ * Dynamic irq allocate and deallocation. Should be replaced by irq domains!
  */
-unsigned int __create_irqs(unsigned int from, unsigned int count, int node)
-{
-	struct irq_cfg **cfg;
-	unsigned long flags;
-	int irq, i;
-
-	if (from < nr_irqs_gsi)
-		from = nr_irqs_gsi;
-
-	cfg = kzalloc_node(count * sizeof(cfg[0]), GFP_KERNEL, node);
-	if (!cfg)
-		return 0;
-
-	irq = alloc_irqs_from(from, count, node);
-	if (irq < 0)
-		goto out_cfgs;
-
-	for (i = 0; i < count; i++) {
-		cfg[i] = alloc_irq_cfg(irq + i, node);
-		if (!cfg[i])
-			goto out_irqs;
-	}
-
-	raw_spin_lock_irqsave(&vector_lock, flags);
-	for (i = 0; i < count; i++)
-		if (__assign_irq_vector(irq + i, cfg[i], apic->target_cpus()))
-			goto out_vecs;
-	raw_spin_unlock_irqrestore(&vector_lock, flags);
-
-	for (i = 0; i < count; i++) {
-		irq_set_chip_data(irq + i, cfg[i]);
-		irq_clear_status_flags(irq + i, IRQ_NOREQUEST);
-	}
-
-	kfree(cfg);
-	return irq;
-
-out_vecs:
-	for (i--; i >= 0; i--)
-		__clear_irq_vector(irq + i, cfg[i]);
-	raw_spin_unlock_irqrestore(&vector_lock, flags);
-out_irqs:
-	for (i = 0; i < count; i++)
-		free_irq_at(irq + i, cfg[i]);
-out_cfgs:
-	kfree(cfg);
-	return 0;
-}
-
-unsigned int create_irq_nr(unsigned int from, int node)
-{
-	return __create_irqs(from, 1, node);
-}
-
-int create_irq(void)
-{
-	int node = cpu_to_node(0);
-	unsigned int irq_want;
-	int irq;
-
-	irq_want = nr_irqs_gsi;
-	irq = create_irq_nr(irq_want, node);
-
-	if (irq == 0)
-		irq = -1;
-
-	return irq;
-}
-
-void destroy_irq(unsigned int irq)
-{
-	struct irq_cfg *cfg = irq_get_chip_data(irq);
-	unsigned long flags;
-
-	irq_set_status_flags(irq, IRQ_NOREQUEST|IRQ_NOPROBE);
-
-	free_remapped_irq(irq);
-
-	raw_spin_lock_irqsave(&vector_lock, flags);
-	__clear_irq_vector(irq, cfg);
-	raw_spin_unlock_irqrestore(&vector_lock, flags);
-	free_irq_at(irq, cfg);
-}
-
-void destroy_irqs(unsigned int irq, unsigned int count)
-{
-	unsigned int i;
-
-	for (i = 0; i < count; i++)
-		destroy_irq(irq + i);
-}
-
 int arch_setup_hwirq(unsigned int irq, int node)
 {
 	struct irq_cfg *cfg;

include/linux/irq.h

@@ -526,12 +526,8 @@ static inline void irq_set_percpu_devid_flags(unsigned int irq)
 }
 
 /* Handle dynamic irq creation and destruction */
-extern unsigned int create_irq_nr(unsigned int irq_want, int node);
-extern unsigned int __create_irqs(unsigned int from, unsigned int count,
-				  int node);
 extern int create_irq(void);
 extern void destroy_irq(unsigned int irq);
-extern void destroy_irqs(unsigned int irq, unsigned int count);
 
 /*
  * Dynamic irq helper functions. Obsolete. Use irq_alloc_desc* and