asm-generic: add generic versions of common headers

#ifndef __ASM_GENERIC_BUGS_H

#define __ASM_GENERIC_BUGS_H

/*

 * This file is included by 'init/main.c' to check for

 * architecture-dependent bugs.

 */

static inline void check_bugs(void) { }

#endif	/* __ASM_GENERIC_BUGS_H */

#ifndef __ASM_GENERIC_CURRENT_H

#define __ASM_GENERIC_CURRENT_H

#include <linux/thread_info.h>

#define get_current() (current_thread_info()->task)

#define current get_current()

#endif /* __ASM_GENERIC_CURRENT_H */

#ifndef __ASM_GENERIC_DELAY_H

#define __ASM_GENERIC_DELAY_H

extern void __udelay(unsigned long usecs);

extern void __delay(unsigned long loops);

#define udelay(n) __udelay(n)

#endif /* __ASM_GENERIC_DELAY_H */

#ifndef __ASM_GENERIC_FB_H_

#define __ASM_GENERIC_FB_H_

#include <linux/fb.h>

#define fb_pgprotect(...) do {} while (0)

static inline int fb_is_primary_device(struct fb_info *info)

{

	return 0;

}

#endif /* __ASM_GENERIC_FB_H_ */

#ifndef __ASM_GENERIC_HARDIRQ_H

#define __ASM_GENERIC_HARDIRQ_H

#include <linux/cache.h>

#include <linux/threads.h>

#include <linux/irq.h>

typedef struct {

	unsigned long __softirq_pending;

} ____cacheline_aligned irq_cpustat_t;

#include <linux/irq_cpustat.h>	/* Standard mappings for irq_cpustat_t above */

#ifndef HARDIRQ_BITS

#define HARDIRQ_BITS	8

#endif

/*

 * 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

#ifndef ack_bad_irq

static inline void ack_bad_irq(unsigned int irq)

{

	printk(KERN_CRIT "unexpected IRQ trap at vector %02x\n", irq);

}

#endif

#endif /* __ASM_GENERIC_HARDIRQ_H */