/* * latencytop.h: Infrastructure for displaying latency * * (C) Copyright 2008 Intel Corporation * Author: Arjan van de Ven <arjan@linux.intel.com> * */ #ifndef _INCLUDE_GUARD_LATENCYTOP_H_ #define _INCLUDE_GUARD_LATENCYTOP_H_ #ifdef CONFIG_LATENCYTOP #define LT_SAVECOUNT 32 #define LT_BACKTRACEDEPTH 12 struct latency_record { unsigned long backtrace[LT_BACKTRACEDEPTH]; unsigned int count; unsigned long time; unsigned long max; }; struct task_struct; void account_scheduler_latency(struct task_struct *task, int usecs, int inter); void clear_all_latency_tracing(struct task_struct *p); #else static inline void account_scheduler_latency(struct task_struct *task, int usecs, int inter) { } static inline void clear_all_latency_tracing(struct task_struct *p) { } #endif #endif