release/src-rt-6.x.4708/linux/linux-2.6.36/arch/ia64/oprofile/init.c

   1 /**
   2  * @file init.c
   3  *
   4  * @remark Copyright 2002 OProfile authors
   5  * @remark Read the file COPYING
   6  *
   7  * @author John Levon <levon@movementarian.org>
   8  */
   9
  10 #include <linux/kernel.h>
  11 #include <linux/oprofile.h>
  12 #include <linux/init.h>
  13 #include <linux/errno.h>
  14
  15 extern int perfmon_init(struct oprofile_operations *ops);
  16 extern void perfmon_exit(void);
  17 extern void ia64_backtrace(struct pt_regs * const regs, unsigned int depth);
  18
  19 int __init oprofile_arch_init(struct oprofile_operations *ops)
  20 {
  21         int ret = -ENODEV;
  22
  23 #ifdef CONFIG_PERFMON
  24         /* perfmon_init() can fail, but we have no way to report it */
  25         ret = perfmon_init(ops);
  26 #endif
  27         ops->backtrace = ia64_backtrace;
  28
  29         return ret;
  30 }
  31
  32
  33 void oprofile_arch_exit(void)
  34 {
  35 #ifdef CONFIG_PERFMON
  36         perfmon_exit();
  37 #endif
  38 }