projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 9745512c AV |
1 | /* |
| 2 | * latencytop.h: Infrastructure for displaying latency | |
| 3 | * | |
| 4 | * (C) Copyright 2008 Intel Corporation | |
| 5 | * Author: Arjan van de Ven <arjan@linux.intel.com> | |
| 6 | * | |
| 7 | */ | |
| 8 | ||
| 9 | #ifndef _INCLUDE_GUARD_LATENCYTOP_H_ | |
| 10 | #define _INCLUDE_GUARD_LATENCYTOP_H_ | |
| 11 | ||
| 12 | #ifdef CONFIG_LATENCYTOP | |
| 13 | ||
| 14 | #define LT_SAVECOUNT 32 | |
| 15 | #define LT_BACKTRACEDEPTH 12 | |
| 16 | ||
| 17 | struct latency_record { | |
| 18 | unsigned long backtrace[LT_BACKTRACEDEPTH]; | |
| 19 | unsigned int count; | |
| 20 | unsigned long time; | |
| 21 | unsigned long max; | |
| 22 | }; | |
| 23 | ||
| 24 | ||
| 25 | struct task_struct; | |
| 26 | ||
| 27 | void account_scheduler_latency(struct task_struct *task, int usecs, int inter); | |
| 28 | ||
| 29 | void clear_all_latency_tracing(struct task_struct *p); | |
| 30 | ||
| 31 | #else | |
| 32 | ||
| 33 | static inline void | |
| 34 | account_scheduler_latency(struct task_struct *task, int usecs, int inter) | |
| 35 | { | |
| 36 | } | |
| 37 | ||
| 38 | static inline void clear_all_latency_tracing(struct task_struct *p) | |
| 39 | { | |
| 40 | } | |
| 41 | ||
| 42 | #endif | |
| 43 | ||
| 44 | #endif |