| /* |
| * 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 |
