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: Thomas Gleixner <tglx@linutronix.de>
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@ -251,7 +251,6 @@ int __init early_irq_init(void)
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for (i = 0; i < count; i++) {
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desc[i].irq_data.irq = i;
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desc[i].irq_data.chip = &no_irq_chip;
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/* TODO : do this allocation on-demand ... */
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desc[i].kstat_irqs = alloc_percpu(unsigned int);
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alloc_masks(desc + i, GFP_KERNEL, node);
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desc_smp_init(desc + i, node);
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@ -277,22 +276,6 @@ static void free_desc(unsigned int irq)
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static inline int alloc_descs(unsigned int start, unsigned int cnt, int node)
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{
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#if defined(CONFIG_KSTAT_IRQS_ONDEMAND)
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struct irq_desc *desc;
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unsigned int i;
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for (i = 0; i < cnt; i++) {
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desc = irq_to_desc(start + i);
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if (desc && !desc->kstat_irqs) {
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unsigned int __percpu *stats = alloc_percpu(unsigned int);
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if (!stats)
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return -1;
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if (cmpxchg(&desc->kstat_irqs, NULL, stats) != NULL)
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free_percpu(stats);
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}
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}
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#endif
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return start;
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}
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#endif /* !CONFIG_SPARSE_IRQ */
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