regmap: allow regmap instances to be named
[linux-2.6.git] / include / linux / latencytop.h
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 #include <linux/compiler.h>
13 #ifdef CONFIG_LATENCYTOP
14
15 #define LT_SAVECOUNT            32
16 #define LT_BACKTRACEDEPTH       12
17
18 struct latency_record {
19         unsigned long   backtrace[LT_BACKTRACEDEPTH];
20         unsigned int    count;
21         unsigned long   time;
22         unsigned long   max;
23 };
24
25
26 struct task_struct;
27
28 extern int latencytop_enabled;
29 void __account_scheduler_latency(struct task_struct *task, int usecs, int inter);
30 static inline void
31 account_scheduler_latency(struct task_struct *task, int usecs, int inter)
32 {
33         if (unlikely(latencytop_enabled))
34                 __account_scheduler_latency(task, usecs, inter);
35 }
36
37 void clear_all_latency_tracing(struct task_struct *p);
38
39 #else
40
41 static inline void
42 account_scheduler_latency(struct task_struct *task, int usecs, int inter)
43 {
44 }
45
46 static inline void clear_all_latency_tracing(struct task_struct *p)
47 {
48 }
49
50 #endif
51
52 #endif