|  | #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 |