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x86, irq: Introduce helpers to access struct irq_cfg

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Change irq_cfg() from static to extern, also introduce helper function
irqd_cfg(). Later we can rewrite these two helpers when enabling
hierarchy irqdomain.

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Grant Likely <grant.likely@linaro.org>
Link: http://lkml.kernel.org/r/1414397531-28254-9-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Jiang Liu 2014-10-27 16:11:59 +08:00 committed by Thomas Gleixner
parent b794ef26f1
commit 55a0e2b122
2 changed files with 8 additions and 1 deletions
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2
arch/x86/include/asm/hw_irq.h
View File

@ -132,6 +132,8 @@ struct irq_cfg {
};
};
extern struct irq_cfg *irq_cfg(unsigned int irq);
extern struct irq_cfg *irqd_cfg(struct irq_data *irq_data);
extern void setup_vector_irq(int cpu);
extern int assign_irq_vector(int, struct irq_cfg *, const struct cpumask *);
#ifdef CONFIG_SMP

7
arch/x86/kernel/apic/io_apic.c
View File

@ -281,11 +281,16 @@ int __init arch_early_irq_init(void)
return 0;
}
static inline struct irq_cfg *irq_cfg(unsigned int irq)
struct irq_cfg *irq_cfg(unsigned int irq)
{
return irq_get_chip_data(irq);
}
struct irq_cfg *irqd_cfg(struct irq_data *irq_data)
{
return irq_data->chip_data;
}
static struct irq_cfg *alloc_irq_cfg(unsigned int irq, int node)
{
struct irq_cfg *cfg;