This source file includes following definitions.
- account_scheduler_latency
- account_scheduler_latency
- clear_tsk_latency_tracing
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10 #ifndef _INCLUDE_GUARD_LATENCYTOP_H_
11 #define _INCLUDE_GUARD_LATENCYTOP_H_
12
13 #include <linux/compiler.h>
14 struct task_struct;
15
16 #ifdef CONFIG_LATENCYTOP
17
18 #define LT_SAVECOUNT 32
19 #define LT_BACKTRACEDEPTH 12
20
21 struct latency_record {
22 unsigned long backtrace[LT_BACKTRACEDEPTH];
23 unsigned int count;
24 unsigned long time;
25 unsigned long max;
26 };
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30 extern int latencytop_enabled;
31 void __account_scheduler_latency(struct task_struct *task, int usecs, int inter);
32 static inline void
33 account_scheduler_latency(struct task_struct *task, int usecs, int inter)
34 {
35 if (unlikely(latencytop_enabled))
36 __account_scheduler_latency(task, usecs, inter);
37 }
38
39 void clear_tsk_latency_tracing(struct task_struct *p);
40
41 extern int sysctl_latencytop(struct ctl_table *table, int write,
42 void __user *buffer, size_t *lenp, loff_t *ppos);
43
44 #else
45
46 static inline void
47 account_scheduler_latency(struct task_struct *task, int usecs, int inter)
48 {
49 }
50
51 static inline void clear_tsk_latency_tracing(struct task_struct *p)
52 {
53 }
54
55 #endif
56
57 #endif