irq.c 854 B

123456789101112131415161718192021222324252627282930313233343536373839
  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/traps.h>
  18. asmlinkage void do_IRQ(int irq, struct pt_regs *regs)
  19. {
  20. struct pt_regs *oldregs = set_irq_regs(regs);
  21. irq_enter();
  22. generic_handle_irq(irq);
  23. irq_exit();
  24. set_irq_regs(oldregs);
  25. }
  26. /* The number of spurious interrupts */
  27. atomic_t irq_err_count;
  28. int arch_show_interrupts(struct seq_file *p, int prec)
  29. {
  30. seq_printf(p, "%*s: %10u\n", prec, "ERR", atomic_read(&irq_err_count));
  31. return 0;
  32. }