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1da177e4 LT |
1 | #ifndef _LINUX_PROFILE_H |
2 | #define _LINUX_PROFILE_H | |
3 | ||
4 | #ifdef __KERNEL__ | |
5 | ||
6 | #include <linux/kernel.h> | |
7 | #include <linux/config.h> | |
8 | #include <linux/init.h> | |
9 | #include <linux/cpumask.h> | |
10 | #include <asm/errno.h> | |
11 | ||
12 | #define CPU_PROFILING 1 | |
13 | #define SCHED_PROFILING 2 | |
14 | ||
15 | struct proc_dir_entry; | |
16 | struct pt_regs; | |
17 | ||
18 | /* init basic kernel profiler */ | |
19 | void __init profile_init(void); | |
20 | void profile_tick(int, struct pt_regs *); | |
21 | void profile_hit(int, void *); | |
22 | #ifdef CONFIG_PROC_FS | |
23 | void create_prof_cpu_mask(struct proc_dir_entry *); | |
24 | #else | |
25 | #define create_prof_cpu_mask(x) do { (void)(x); } while (0) | |
26 | #endif | |
27 | ||
28 | enum profile_type { | |
29 | PROFILE_TASK_EXIT, | |
30 | PROFILE_MUNMAP | |
31 | }; | |
32 | ||
33 | #ifdef CONFIG_PROFILING | |
34 | ||
35 | struct notifier_block; | |
36 | struct task_struct; | |
37 | struct mm_struct; | |
38 | ||
39 | /* task is in do_exit() */ | |
40 | void profile_task_exit(struct task_struct * task); | |
41 | ||
42 | /* task is dead, free task struct ? Returns 1 if | |
43 | * the task was taken, 0 if the task should be freed. | |
44 | */ | |
45 | int profile_handoff_task(struct task_struct * task); | |
46 | ||
47 | /* sys_munmap */ | |
48 | void profile_munmap(unsigned long addr); | |
49 | ||
50 | int task_handoff_register(struct notifier_block * n); | |
51 | int task_handoff_unregister(struct notifier_block * n); | |
52 | ||
53 | int profile_event_register(enum profile_type, struct notifier_block * n); | |
54 | int profile_event_unregister(enum profile_type, struct notifier_block * n); | |
55 | ||
56 | int register_timer_hook(int (*hook)(struct pt_regs *)); | |
57 | void unregister_timer_hook(int (*hook)(struct pt_regs *)); | |
58 | ||
59 | /* Timer based profiling hook */ | |
60 | extern int (*timer_hook)(struct pt_regs *); | |
61 | ||
62 | struct pt_regs; | |
63 | ||
64 | #else | |
65 | ||
66 | static inline int task_handoff_register(struct notifier_block * n) | |
67 | { | |
68 | return -ENOSYS; | |
69 | } | |
70 | ||
71 | static inline int task_handoff_unregister(struct notifier_block * n) | |
72 | { | |
73 | return -ENOSYS; | |
74 | } | |
75 | ||
76 | static inline int profile_event_register(enum profile_type t, struct notifier_block * n) | |
77 | { | |
78 | return -ENOSYS; | |
79 | } | |
80 | ||
81 | static inline int profile_event_unregister(enum profile_type t, struct notifier_block * n) | |
82 | { | |
83 | return -ENOSYS; | |
84 | } | |
85 | ||
86 | #define profile_task_exit(a) do { } while (0) | |
87 | #define profile_handoff_task(a) (0) | |
88 | #define profile_munmap(a) do { } while (0) | |
89 | ||
90 | static inline int register_timer_hook(int (*hook)(struct pt_regs *)) | |
91 | { | |
92 | return -ENOSYS; | |
93 | } | |
94 | ||
95 | static inline void unregister_timer_hook(int (*hook)(struct pt_regs *)) | |
96 | { | |
97 | return; | |
98 | } | |
99 | ||
100 | #endif /* CONFIG_PROFILING */ | |
101 | ||
102 | #endif /* __KERNEL__ */ | |
103 | ||
104 | #endif /* _LINUX_PROFILE_H */ |