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kernel add
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#ifndef _LINUX_IRQNR_H
#define _LINUX_IRQNR_H
#include <uapi/linux/irqnr.h>
extern int nr_irqs;
extern struct irq_desc *irq_to_desc(unsigned int irq);
unsigned int irq_get_next_irq(unsigned int offset);
# define for_each_irq_desc(irq, desc) \
for (irq = 0, desc = irq_to_desc(irq); irq < nr_irqs; \
irq++, desc = irq_to_desc(irq)) \
if (!desc) \
; \
else
# define for_each_irq_desc_reverse(irq, desc) \
for (irq = nr_irqs - 1, desc = irq_to_desc(irq); irq >= 0; \
irq--, desc = irq_to_desc(irq)) \
if (!desc) \
; \
else
# define for_each_active_irq(irq) \
for (irq = irq_get_next_irq(0); irq < nr_irqs; \
irq = irq_get_next_irq(irq + 1))
#define for_each_irq_nr(irq) \
for (irq = 0; irq < nr_irqs; irq++)
#endif
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