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| author | Yinghai Lu <yinghai@kernel.org> | 2009-01-12 17:39:24 -0800 |
|---|---|---|
| committer | Mike Travis <travis@sgi.com> | 2009-01-12 17:39:24 -0800 |
| commit | 4a046d1754ee6ebb6f399696805ed61ea0444d4c (patch) | |
| tree | 9b9e8e63d9490aea4c2f06263ad541cb8115eb63 /kernel | |
| parent | e65e49d0f3714f4a6a42f6f6a19926ba33fcda75 (diff) | |
| download | linux-4a046d1754ee6ebb6f399696805ed61ea0444d4c.tar.gz linux-4a046d1754ee6ebb6f399696805ed61ea0444d4c.tar.bz2 linux-4a046d1754ee6ebb6f399696805ed61ea0444d4c.zip | |
x86: arch_probe_nr_irqs
Impact: save RAM with large NR_CPUS, get smaller nr_irqs
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Mike Travis <travis@sgi.com>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/irq/handle.c | 9 | ||||
| -rw-r--r-- | kernel/softirq.c | 5 |
2 files changed, 7 insertions, 7 deletions
diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c index 04d3e46031e5..375d68cd5bf0 100644 --- a/kernel/irq/handle.c +++ b/kernel/irq/handle.c @@ -59,10 +59,6 @@ EXPORT_SYMBOL_GPL(nr_irqs); #ifdef CONFIG_SPARSE_IRQ -#ifndef max_nr_irqs -#define max_nr_irqs(nr_cpus) NR_IRQS -#endif - static struct irq_desc irq_desc_init = { .irq = -1, .status = IRQ_DISABLED, @@ -137,9 +133,8 @@ int __init early_irq_init(void) int legacy_count; int i; - /* initialize nr_irqs based on nr_cpu_ids */ - nr_irqs = max_nr_irqs(nr_cpu_ids); - + /* initialize nr_irqs based on nr_cpu_ids */ + arch_probe_nr_irqs(); printk(KERN_INFO "NR_IRQS:%d nr_irqs:%d\n", NR_IRQS, nr_irqs); desc = irq_desc_legacy; diff --git a/kernel/softirq.c b/kernel/softirq.c index bdbe9de9cd8d..0365b4899a3d 100644 --- a/kernel/softirq.c +++ b/kernel/softirq.c @@ -795,6 +795,11 @@ int __init __weak early_irq_init(void) return 0; } +int __init __weak arch_probe_nr_irqs(void) +{ + return 0; +} + int __init __weak arch_early_irq_init(void) { return 0; |