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1da177e4 LT |
1 | #ifndef _LINUX_PROFILE_H |
2 | #define _LINUX_PROFILE_H | |
3 | ||
1da177e4 | 4 | #include <linux/kernel.h> |
1da177e4 LT |
5 | #include <linux/init.h> |
6 | #include <linux/cpumask.h> | |
ece8a684 IM |
7 | #include <linux/cache.h> |
8 | ||
1da177e4 LT |
9 | #include <asm/errno.h> |
10 | ||
ece8a684 IM |
11 | extern int prof_on __read_mostly; |
12 | ||
1da177e4 LT |
13 | #define CPU_PROFILING 1 |
14 | #define SCHED_PROFILING 2 | |
ece8a684 | 15 | #define SLEEP_PROFILING 3 |
07031e14 | 16 | #define KVM_PROFILING 4 |
1da177e4 LT |
17 | |
18 | struct proc_dir_entry; | |
19 | struct pt_regs; | |
772a0dc5 | 20 | struct notifier_block; |
1da177e4 LT |
21 | |
22 | /* init basic kernel profiler */ | |
23 | void __init profile_init(void); | |
7d12e780 | 24 | void profile_tick(int); |
ece8a684 IM |
25 | |
26 | /* | |
27 | * Add multiple profiler hits to a given address: | |
28 | */ | |
29 | void profile_hits(int, void *ip, unsigned int nr_hits); | |
30 | ||
31 | /* | |
32 | * Single profiler hit: | |
33 | */ | |
34 | static inline void profile_hit(int type, void *ip) | |
35 | { | |
36 | /* | |
37 | * Speedup for the common (no profiling enabled) case: | |
38 | */ | |
39 | if (unlikely(prof_on == type)) | |
40 | profile_hits(type, ip, 1); | |
41 | } | |
42 | ||
1da177e4 LT |
43 | #ifdef CONFIG_PROC_FS |
44 | void create_prof_cpu_mask(struct proc_dir_entry *); | |
45 | #else | |
46 | #define create_prof_cpu_mask(x) do { (void)(x); } while (0) | |
47 | #endif | |
48 | ||
49 | enum profile_type { | |
50 | PROFILE_TASK_EXIT, | |
51 | PROFILE_MUNMAP | |
52 | }; | |
53 | ||
54 | #ifdef CONFIG_PROFILING | |
55 | ||
1da177e4 LT |
56 | struct task_struct; |
57 | struct mm_struct; | |
58 | ||
59 | /* task is in do_exit() */ | |
60 | void profile_task_exit(struct task_struct * task); | |
61 | ||
62 | /* task is dead, free task struct ? Returns 1 if | |
63 | * the task was taken, 0 if the task should be freed. | |
64 | */ | |
65 | int profile_handoff_task(struct task_struct * task); | |
66 | ||
67 | /* sys_munmap */ | |
68 | void profile_munmap(unsigned long addr); | |
69 | ||
70 | int task_handoff_register(struct notifier_block * n); | |
71 | int task_handoff_unregister(struct notifier_block * n); | |
72 | ||
73 | int profile_event_register(enum profile_type, struct notifier_block * n); | |
74 | int profile_event_unregister(enum profile_type, struct notifier_block * n); | |
75 | ||
76 | int register_timer_hook(int (*hook)(struct pt_regs *)); | |
77 | void unregister_timer_hook(int (*hook)(struct pt_regs *)); | |
78 | ||
1da177e4 LT |
79 | struct pt_regs; |
80 | ||
81 | #else | |
82 | ||
83 | static inline int task_handoff_register(struct notifier_block * n) | |
84 | { | |
85 | return -ENOSYS; | |
86 | } | |
87 | ||
88 | static inline int task_handoff_unregister(struct notifier_block * n) | |
89 | { | |
90 | return -ENOSYS; | |
91 | } | |
92 | ||
93 | static inline int profile_event_register(enum profile_type t, struct notifier_block * n) | |
94 | { | |
95 | return -ENOSYS; | |
96 | } | |
97 | ||
98 | static inline int profile_event_unregister(enum profile_type t, struct notifier_block * n) | |
99 | { | |
100 | return -ENOSYS; | |
101 | } | |
102 | ||
103 | #define profile_task_exit(a) do { } while (0) | |
104 | #define profile_handoff_task(a) (0) | |
105 | #define profile_munmap(a) do { } while (0) | |
106 | ||
107 | static inline int register_timer_hook(int (*hook)(struct pt_regs *)) | |
108 | { | |
109 | return -ENOSYS; | |
110 | } | |
111 | ||
112 | static inline void unregister_timer_hook(int (*hook)(struct pt_regs *)) | |
113 | { | |
114 | return; | |
115 | } | |
116 | ||
117 | #endif /* CONFIG_PROFILING */ | |
118 | ||
1da177e4 | 119 | #endif /* _LINUX_PROFILE_H */ |