2 * latency.h: Explicit system-wide latency-expectation infrastructure
4 * (C) Copyright 2006 Intel Corporation
5 * Author: Arjan van de Ven <arjan@linux.intel.com>
9 #ifndef _INCLUDE_GUARD_LATENCY_H_
10 #define _INCLUDE_GUARD_LATENCY_H_
12 #include <linux/notifier.h>
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);
20 int register_latency_notifier(struct notifier_block * nb);
21 int unregister_latency_notifier(struct notifier_block * nb);
23 #define INFINITE_LATENCY 1000000