irq.c 878 B

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  1. /*
  2. * irq.c
  3. *
  4. * (C) Copyright 2007, Greg Ungerer <gerg@snapgear.com>
  5. *
  6. * This file is subject to the terms and conditions of the GNU General Public
  7. * License. See the file COPYING in the main directory of this archive
  8. * for more details.
  9. */
  10. #include <linux/types.h>
  11. #include <linux/init.h>
  12. #include <linux/kernel.h>
  13. #include <linux/kernel_stat.h>
  14. #include <linux/interrupt.h>
  15. #include <linux/irq.h>
  16. #include <linux/seq_file.h>
  17. #include <asm/system.h>
  18. #include <asm/traps.h>
  19. asmlinkage void do_IRQ(int irq, struct pt_regs *regs)
  20. {
  21. struct pt_regs *oldregs = set_irq_regs(regs);
  22. irq_enter();
  23. generic_handle_irq(irq);
  24. irq_exit();
  25. set_irq_regs(oldregs);
  26. }
  27. /* The number of spurious interrupts */
  28. atomic_t irq_err_count;
  29. int arch_show_interrupts(struct seq_file *p, int prec)
  30. {
  31. seq_printf(p, "%*s: %10u\n", prec, "ERR", atomic_read(&irq_err_count));
  32. return 0;
  33. }