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Commit 44951a60 authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

genirq: Remove dead code 

CONFIG_KSTAT_IRQS_ONDEMAND does not exist. It's not worth to implement
it. Use sparse irqs if you care about memory consumption of the
interrupt layer.

Found by undertaker: http://vamos.informatik.uni-erlangen.de/trac/undertaker



Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent c305d524

kernel/irq/irqdesc.c

+0 −17
Original line number Diff line number Diff line
@@ -251,7 +251,6 @@ int __init early_irq_init(void) 
	for (i = 0; i < count; i++) {

		desc[i].irq_data.irq = i;

		desc[i].irq_data.chip = &no_irq_chip;

		/* TODO : do this allocation on-demand ... */

		desc[i].kstat_irqs = alloc_percpu(unsigned int);

		alloc_masks(desc + i, GFP_KERNEL, node);

		desc_smp_init(desc + i, node);
@@ -277,22 +276,6 @@ static void free_desc(unsigned int irq) 


static inline int alloc_descs(unsigned int start, unsigned int cnt, int node)

{

#if defined(CONFIG_KSTAT_IRQS_ONDEMAND)

	struct irq_desc *desc;

	unsigned int i;



	for (i = 0; i < cnt; i++) {

		desc = irq_to_desc(start + i);

		if (desc && !desc->kstat_irqs) {

			unsigned int __percpu *stats = alloc_percpu(unsigned int);



			if (!stats)

				return -1;

			if (cmpxchg(&desc->kstat_irqs, NULL, stats) != NULL)

				free_percpu(stats);

		}

	}

#endif

	return start;

}

#endif /* !CONFIG_SPARSE_IRQ */