release/src-rt/linux/linux-2.6/include/linux/latency.h

   1 /*
   2  * latency.h: Explicit system-wide latency-expectation infrastructure
   3  *
   4  * (C) Copyright 2006 Intel Corporation
   5  * Author: Arjan van de Ven <arjan@linux.intel.com>
   6  *
   7  */
   8
   9 #ifndef _INCLUDE_GUARD_LATENCY_H_
  10 #define _INCLUDE_GUARD_LATENCY_H_
  11
  12 #include <linux/notifier.h>
  13
  14 void set_acceptable_latency(char *identifier, int usecs);
  15 void modify_acceptable_latency(char *identifier, int usecs);
  16 void remove_acceptable_latency(char *identifier);
  17 void synchronize_acceptable_latency(void);
  18 int system_latency_constraint(void);
  19
  20 int register_latency_notifier(struct notifier_block * nb);
  21 int unregister_latency_notifier(struct notifier_block * nb);
  22
  23 #define INFINITE_LATENCY 1000000
  24
  25 #endif