#ifndef __ASM_HARDIRQ_H#define __ASM_HARDIRQ_H/* only non-SMP supported */#include <linux/threads.h>#include <linux/cache.h>/* entry.S is sensitive to the offsets of these fields */typedefstruct{unsignedint__softirq_pending;}____cacheline_alignedirq_cpustat_t;#include <linux/irq_cpustat.h> /* Standard mappings for irq_cpustat_t above */#define HARDIRQ_BITS 8/* * The hardirq mask has to be large enough to have * space for potentially all IRQ sources in the system * nesting on a single CPU: */#if (1 << HARDIRQ_BITS) < NR_IRQS# error HARDIRQ_BITS is too low!#endif#endif /* __ASM_HARDIRQ_H */