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| author | Jiang Liu <jiang.liu@linux.intel.com> | 2015-04-13 08:11:56 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2015-04-24 15:36:51 +0200 |
| commit | 133153205b263ea9ce4e771876ede544f896e034 (patch) | |
| tree | 2e7373d1a3562f7ca08996141f4799fab55adec7 /arch/x86/kernel/apic/io_apic.c | |
| parent | x86/irq: Implement callbacks to enable hierarchical irqdomains on IOAPICs (diff) | |
| download | linux-133153205b263ea9ce4e771876ede544f896e034.tar.xz linux-133153205b263ea9ce4e771876ede544f896e034.zip | |
x86/irq: Refine the way to allocate irq_cfg for legacy IRQs
To support legacy ISA IRQs, we need to preallocate irq_cfg structures
for legacy ISA IRQs. Refine the way to allocate irq_cfg for legacy ISA
IRQs, so it's more friendly for the hierarchical irqdomain
implementation.
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Tested-by: Joerg Roedel <jroedel@suse.de>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: David Cohen <david.a.cohen@linux.intel.com>
Cc: Sander Eikelenboom <linux@eikelenboom.it>
Cc: David Vrabel <david.vrabel@citrix.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dimitri Sivanich <sivanich@sgi.com>
Cc: Grant Likely <grant.likely@linaro.org>
Link: http://lkml.kernel.org/r/1428905519-23704-35-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/kernel/apic/io_apic.c')
| -rw-r--r-- | arch/x86/kernel/apic/io_apic.c | 13 |
1 files changed, 1 insertions, 12 deletions
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 3406dbec1570..16d4ba3ac844 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -254,8 +254,7 @@ static void free_ioapic_saved_registers(int idx) int __init arch_early_ioapic_init(void) { - struct irq_cfg *cfg; - int i, node = cpu_to_node(0); + int i; if (!nr_legacy_irqs()) io_apic_irqs = ~0UL; @@ -263,16 +262,6 @@ int __init arch_early_ioapic_init(void) for_each_ioapic(i) alloc_ioapic_saved_registers(i); - /* - * For legacy IRQ's, start with assigning irq0 to irq15 to - * IRQ0_VECTOR to IRQ15_VECTOR for all cpu's. - */ - for (i = 0; i < nr_legacy_irqs(); i++) { - cfg = alloc_irq_and_cfg_at(i, node); - cfg->vector = IRQ0_VECTOR + i; - cpumask_setall(cfg->domain); - } - return 0; } |