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| author | Alek Du <alek.du@intel.com> | 2009-09-07 16:25:45 +0800 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2010-02-19 16:25:17 -0800 |
| commit | d39f6495f66616b637260405d0b5dc2656bc490e (patch) | |
| tree | 2db2d962d336a47e54fb5cc0e069af4b63dfb73e /arch | |
| parent | 9325a28ce2fa7c597e5ed41455a06c30b82b5710 (diff) | |
| download | linux-d39f6495f66616b637260405d0b5dc2656bc490e.tar.gz linux-d39f6495f66616b637260405d0b5dc2656bc490e.tar.bz2 linux-d39f6495f66616b637260405d0b5dc2656bc490e.zip | |
x86, ioapic: Improve handling of i8259A irq init
Since we already track the number of legacy vectors by nr_legacy_irqs, we
can avoid use static vector allocations -- we can use dynamic one.
Signed-off-by: Alek Du <alek.du@intel.com>
LKML-Reference: <43F901BD926A4E43B106BF17856F07559FB80D01@orsmsx508.amr.corp.intel.com>
Signed-off-by: Jacob Pan <jacob.jun.pan@intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kernel/apic/io_apic.c | 23 |
1 files changed, 4 insertions, 19 deletions
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 53243ca7816d..75265ab83b17 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -140,27 +140,10 @@ static struct irq_pin_list *get_one_free_irq_2_pin(int node) /* irq_cfg is indexed by the sum of all RTEs in all I/O APICs. */ #ifdef CONFIG_SPARSE_IRQ -static struct irq_cfg irq_cfgx[] = { +static struct irq_cfg irq_cfgx[NR_IRQS_LEGACY]; #else -static struct irq_cfg irq_cfgx[NR_IRQS] = { +static struct irq_cfg irq_cfgx[NR_IRQS]; #endif - [0] = { .vector = IRQ0_VECTOR, }, - [1] = { .vector = IRQ1_VECTOR, }, - [2] = { .vector = IRQ2_VECTOR, }, - [3] = { .vector = IRQ3_VECTOR, }, - [4] = { .vector = IRQ4_VECTOR, }, - [5] = { .vector = IRQ5_VECTOR, }, - [6] = { .vector = IRQ6_VECTOR, }, - [7] = { .vector = IRQ7_VECTOR, }, - [8] = { .vector = IRQ8_VECTOR, }, - [9] = { .vector = IRQ9_VECTOR, }, - [10] = { .vector = IRQ10_VECTOR, }, - [11] = { .vector = IRQ11_VECTOR, }, - [12] = { .vector = IRQ12_VECTOR, }, - [13] = { .vector = IRQ13_VECTOR, }, - [14] = { .vector = IRQ14_VECTOR, }, - [15] = { .vector = IRQ15_VECTOR, }, -}; void __init io_apic_disable_legacy(void) { @@ -181,6 +164,8 @@ int __init arch_early_irq_init(void) node= cpu_to_node(boot_cpu_id); for (i = 0; i < count; i++) { + if (i < nr_legacy_irqs) + cfg[i].vector = IRQ0_VECTOR + i; desc = irq_to_desc(i); desc->chip_data = &cfg[i]; zalloc_cpumask_var_node(&cfg[i].domain, GFP_NOWAIT, node); |