/*
   * latency.h: Explicit system-wide latency-expectation infrastructure
   *
   * (C) Copyright 2006 Intel Corporation
   * Author: Arjan van de Ven <arjan@linux.intel.com>
   *
   */
  
  #ifndef _INCLUDE_GUARD_LATENCY_H_
  #define _INCLUDE_GUARD_LATENCY_H_
  
  #include <linux/notifier.h>
  
  void set_acceptable_latency(char *identifier, int usecs);
  void modify_acceptable_latency(char *identifier, int usecs);
  void remove_acceptable_latency(char *identifier);
  void synchronize_acceptable_latency(void);
  int system_latency_constraint(void);
  
  int register_latency_notifier(struct notifier_block * nb);
  int unregister_latency_notifier(struct notifier_block * nb);
  
  #define INFINITE_LATENCY 1000000
  
  #endif