Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | #ifndef _LINUX_PROFILE_H |
2 | #define _LINUX_PROFILE_H | |
3 | ||
4 | #ifdef __KERNEL__ | |
5 | ||
6 | #include <linux/kernel.h> | |
1da177e4 LT |
7 | #include <linux/init.h> |
8 | #include <linux/cpumask.h> | |
ece8a684 IM |
9 | #include <linux/cache.h> |
10 | ||
1da177e4 LT |
11 | #include <asm/errno.h> |
12 | ||
ece8a684 IM |
13 | extern int prof_on __read_mostly; |
14 | ||
1da177e4 LT |
15 | #define CPU_PROFILING 1 |
16 | #define SCHED_PROFILING 2 | |
ece8a684 | 17 | #define SLEEP_PROFILING 3 |
1da177e4 LT |
18 | |
19 | struct proc_dir_entry; | |
20 | struct pt_regs; | |
772a0dc5 | 21 | struct notifier_block; |
1da177e4 LT |
22 | |
23 | /* init basic kernel profiler */ | |
24 | void __init profile_init(void); | |
7d12e780 | 25 | void profile_tick(int); |
ece8a684 IM |
26 | |
27 | /* | |
28 | * Add multiple profiler hits to a given address: | |
29 | */ | |
30 | void profile_hits(int, void *ip, unsigned int nr_hits); | |
31 | ||
32 | /* | |
33 | * Single profiler hit: | |
34 | */ | |
35 | static inline void profile_hit(int type, void *ip) | |
36 | { | |
37 | /* | |
38 | * Speedup for the common (no profiling enabled) case: | |
39 | */ | |
40 | if (unlikely(prof_on == type)) | |
41 | profile_hits(type, ip, 1); | |
42 | } | |
43 | ||
1da177e4 LT |
44 | #ifdef CONFIG_PROC_FS |
45 | void create_prof_cpu_mask(struct proc_dir_entry *); | |
46 | #else | |
47 | #define create_prof_cpu_mask(x) do { (void)(x); } while (0) | |
48 | #endif | |
49 | ||
50 | enum profile_type { | |
51 | PROFILE_TASK_EXIT, | |
52 | PROFILE_MUNMAP | |
53 | }; | |
54 | ||
55 | #ifdef CONFIG_PROFILING | |
56 | ||
1da177e4 LT |
57 | struct task_struct; |
58 | struct mm_struct; | |
59 | ||
60 | /* task is in do_exit() */ | |
61 | void profile_task_exit(struct task_struct * task); | |
62 | ||
63 | /* task is dead, free task struct ? Returns 1 if | |
64 | * the task was taken, 0 if the task should be freed. | |
65 | */ | |
66 | int profile_handoff_task(struct task_struct * task); | |
67 | ||
68 | /* sys_munmap */ | |
69 | void profile_munmap(unsigned long addr); | |
70 | ||
71 | int task_handoff_register(struct notifier_block * n); | |
72 | int task_handoff_unregister(struct notifier_block * n); | |
73 | ||
74 | int profile_event_register(enum profile_type, struct notifier_block * n); | |
75 | int profile_event_unregister(enum profile_type, struct notifier_block * n); | |
76 | ||
77 | int register_timer_hook(int (*hook)(struct pt_regs *)); | |
78 | void unregister_timer_hook(int (*hook)(struct pt_regs *)); | |
79 | ||
80 | /* Timer based profiling hook */ | |
81 | extern int (*timer_hook)(struct pt_regs *); | |
82 | ||
83 | struct pt_regs; | |
84 | ||
85 | #else | |
86 | ||
87 | static inline int task_handoff_register(struct notifier_block * n) | |
88 | { | |
89 | return -ENOSYS; | |
90 | } | |
91 | ||
92 | static inline int task_handoff_unregister(struct notifier_block * n) | |
93 | { | |
94 | return -ENOSYS; | |
95 | } | |
96 | ||
97 | static inline int profile_event_register(enum profile_type t, struct notifier_block * n) | |
98 | { | |
99 | return -ENOSYS; | |
100 | } | |
101 | ||
102 | static inline int profile_event_unregister(enum profile_type t, struct notifier_block * n) | |
103 | { | |
104 | return -ENOSYS; | |
105 | } | |
106 | ||
107 | #define profile_task_exit(a) do { } while (0) | |
108 | #define profile_handoff_task(a) (0) | |
109 | #define profile_munmap(a) do { } while (0) | |
110 | ||
111 | static inline int register_timer_hook(int (*hook)(struct pt_regs *)) | |
112 | { | |
113 | return -ENOSYS; | |
114 | } | |
115 | ||
116 | static inline void unregister_timer_hook(int (*hook)(struct pt_regs *)) | |
117 | { | |
118 | return; | |
119 | } | |
120 | ||
121 | #endif /* CONFIG_PROFILING */ | |
122 | ||
123 | #endif /* __KERNEL__ */ | |
124 | ||
125 | #endif /* _LINUX_PROFILE_H */ |