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authorThomas Gleixner <tglx@linutronix.de>2008-10-15 14:16:55 +0200
committerIngo Molnar <mingo@elte.hu>2008-10-16 16:53:15 +0200
commit2cc21ef843d4fb7da122239b644a1f6f0aca60a6 (patch)
tree5d08e110164176c4011e42d4700ecd0050ad0ce9 /kernel/irq
parentc6b7674f323622d86316bf7951ad9cae1ce24642 (diff)
downloadop-kernel-dev-2cc21ef843d4fb7da122239b644a1f6f0aca60a6.zip
op-kernel-dev-2cc21ef843d4fb7da122239b644a1f6f0aca60a6.tar.gz
genirq: remove sparse irq code
This code is not ready, but we need to rip it out instead of rebasing as we would lose the APIC/IO_APIC unification otherwise. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/irq')
-rw-r--r--kernel/irq/handle.c114
1 files changed, 0 insertions, 114 deletions
diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
index c19896f..f837133 100644
--- a/kernel/irq/handle.c
+++ b/kernel/irq/handle.c
@@ -111,15 +111,6 @@ static void init_kstat_irqs(struct irq_desc *desc, int nr_desc, int nr)
}
}
-#ifdef CONFIG_HAVE_SPARSE_IRQ
-/*
- * Protect the sparse_irqs_free freelist:
- */
-static DEFINE_SPINLOCK(sparse_irq_lock);
-static struct irq_desc *sparse_irqs_free;
-struct irq_desc *sparse_irqs;
-#endif
-
static void __init init_work(void *data)
{
struct dyn_array *da = data;
@@ -130,121 +121,16 @@ static void __init init_work(void *data)
for (i = 0; i < *da->nr; i++) {
init_one_irq_desc(&desc[i]);
-#ifndef CONFIG_HAVE_SPARSE_IRQ
desc[i].irq = i;
-#endif
}
/* init kstat_irqs, nr_cpu_ids is ready already */
init_kstat_irqs(desc, *da->nr, nr_cpu_ids);
-
-#ifdef CONFIG_HAVE_SPARSE_IRQ
- for (i = 1; i < *da->nr; i++)
- desc[i-1].next = &desc[i];
-
- sparse_irqs_free = sparse_irqs;
- sparse_irqs = NULL;
-#endif
-}
-
-#ifdef CONFIG_HAVE_SPARSE_IRQ
-static int nr_irq_desc = 32;
-
-static int __init parse_nr_irq_desc(char *arg)
-{
- if (arg)
- nr_irq_desc = simple_strtoul(arg, NULL, 0);
- return 0;
-}
-
-early_param("nr_irq_desc", parse_nr_irq_desc);
-
-DEFINE_DYN_ARRAY(sparse_irqs, sizeof(struct irq_desc), nr_irq_desc, PAGE_SIZE, init_work);
-
-struct irq_desc *irq_to_desc(unsigned int irq)
-{
- struct irq_desc *desc;
-
- desc = sparse_irqs;
- while (desc) {
- if (desc->irq == irq)
- return desc;
-
- desc = desc->next;
- }
- return NULL;
}
-struct irq_desc *irq_to_desc_alloc(unsigned int irq)
-{
- struct irq_desc *desc, *desc_pri;
- unsigned long flags;
- int count = 0;
- int i;
-
- desc_pri = desc = sparse_irqs;
- while (desc) {
- if (desc->irq == irq)
- return desc;
-
- desc_pri = desc;
- desc = desc->next;
- count++;
- }
-
- spin_lock_irqsave(&sparse_irq_lock, flags);
- /*
- * we run out of pre-allocate ones, allocate more
- */
- if (!sparse_irqs_free) {
- unsigned long phys;
- unsigned long total_bytes;
-
- printk(KERN_DEBUG "try to get more irq_desc %d\n", nr_irq_desc);
-
- total_bytes = sizeof(struct irq_desc) * nr_irq_desc;
- if (after_bootmem)
- desc = kzalloc(total_bytes, GFP_ATOMIC);
- else
- desc = __alloc_bootmem_nopanic(total_bytes, PAGE_SIZE, 0);
-
- if (!desc)
- panic("please boot with nr_irq_desc= %d\n", count * 2);
-
- phys = __pa(desc);
- printk(KERN_DEBUG "irq_desc ==> [%#lx - %#lx]\n", phys, phys + total_bytes);
-
- for (i = 0; i < nr_irq_desc; i++)
- init_one_irq_desc(&desc[i]);
-
- for (i = 1; i < nr_irq_desc; i++)
- desc[i-1].next = &desc[i];
-
- /* init kstat_irqs, nr_cpu_ids is ready already */
- init_kstat_irqs(desc, nr_irq_desc, nr_cpu_ids);
-
- sparse_irqs_free = desc;
- }
-
- desc = sparse_irqs_free;
- sparse_irqs_free = sparse_irqs_free->next;
- desc->next = NULL;
- if (desc_pri)
- desc_pri->next = desc;
- else
- sparse_irqs = desc;
- desc->irq = irq;
-
- spin_unlock_irqrestore(&sparse_irq_lock, flags);
-
- return desc;
-}
-#else
struct irq_desc *irq_desc;
DEFINE_DYN_ARRAY(irq_desc, sizeof(struct irq_desc), nr_irqs, PAGE_SIZE, init_work);
-#endif
-
#else
struct irq_desc irq_desc[NR_IRQS] __cacheline_aligned_in_smp = {
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