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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 | ||
11 | #define CPU_PROFILING 1 | |
12 | #define SCHED_PROFILING 2 | |
ece8a684 | 13 | #define SLEEP_PROFILING 3 |
07031e14 | 14 | #define KVM_PROFILING 4 |
1da177e4 LT |
15 | |
16 | struct proc_dir_entry; | |
17 | struct pt_regs; | |
772a0dc5 | 18 | struct notifier_block; |
1da177e4 | 19 | |
b03f6489 | 20 | #if defined(CONFIG_PROFILING) && defined(CONFIG_PROC_FS) |
cebbd3fb | 21 | void create_prof_cpu_mask(struct proc_dir_entry *de); |
b03f6489 | 22 | #else |
cebbd3fb AM |
23 | static inline void create_prof_cpu_mask(struct proc_dir_entry *de) |
24 | { | |
25 | } | |
b03f6489 AB |
26 | #endif |
27 | ||
28 | enum profile_type { | |
29 | PROFILE_TASK_EXIT, | |
30 | PROFILE_MUNMAP | |
31 | }; | |
32 | ||
33 | #ifdef CONFIG_PROFILING | |
34 | ||
35 | extern int prof_on __read_mostly; | |
36 | ||
1da177e4 | 37 | /* init basic kernel profiler */ |
22b8ce94 DH |
38 | int profile_init(void); |
39 | int profile_setup(char *str); | |
40 | int create_proc_profile(void); | |
b03f6489 | 41 | void profile_tick(int type); |
ece8a684 IM |
42 | |
43 | /* | |
44 | * Add multiple profiler hits to a given address: | |
45 | */ | |
b03f6489 | 46 | void profile_hits(int type, void *ip, unsigned int nr_hits); |
ece8a684 IM |
47 | |
48 | /* | |
49 | * Single profiler hit: | |
50 | */ | |
51 | static inline void profile_hit(int type, void *ip) | |
52 | { | |
53 | /* | |
54 | * Speedup for the common (no profiling enabled) case: | |
55 | */ | |
56 | if (unlikely(prof_on == type)) | |
57 | profile_hits(type, ip, 1); | |
58 | } | |
59 | ||
1da177e4 LT |
60 | struct task_struct; |
61 | struct mm_struct; | |
62 | ||
63 | /* task is in do_exit() */ | |
64 | void profile_task_exit(struct task_struct * task); | |
65 | ||
66 | /* task is dead, free task struct ? Returns 1 if | |
67 | * the task was taken, 0 if the task should be freed. | |
68 | */ | |
69 | int profile_handoff_task(struct task_struct * task); | |
70 | ||
71 | /* sys_munmap */ | |
72 | void profile_munmap(unsigned long addr); | |
73 | ||
74 | int task_handoff_register(struct notifier_block * n); | |
75 | int task_handoff_unregister(struct notifier_block * n); | |
76 | ||
77 | int profile_event_register(enum profile_type, struct notifier_block * n); | |
78 | int profile_event_unregister(enum profile_type, struct notifier_block * n); | |
79 | ||
80 | int register_timer_hook(int (*hook)(struct pt_regs *)); | |
81 | void unregister_timer_hook(int (*hook)(struct pt_regs *)); | |
82 | ||
1da177e4 LT |
83 | struct pt_regs; |
84 | ||
85 | #else | |
86 | ||
b03f6489 AB |
87 | #define prof_on 0 |
88 | ||
22b8ce94 | 89 | static inline int profile_init(void) |
b03f6489 | 90 | { |
22b8ce94 | 91 | return 0; |
b03f6489 AB |
92 | } |
93 | ||
94 | static inline void profile_tick(int type) | |
95 | { | |
96 | return; | |
97 | } | |
98 | ||
99 | static inline void profile_hits(int type, void *ip, unsigned int nr_hits) | |
100 | { | |
101 | return; | |
102 | } | |
103 | ||
104 | static inline void profile_hit(int type, void *ip) | |
105 | { | |
106 | return; | |
107 | } | |
108 | ||
1da177e4 LT |
109 | static inline int task_handoff_register(struct notifier_block * n) |
110 | { | |
111 | return -ENOSYS; | |
112 | } | |
113 | ||
114 | static inline int task_handoff_unregister(struct notifier_block * n) | |
115 | { | |
116 | return -ENOSYS; | |
117 | } | |
118 | ||
119 | static inline int profile_event_register(enum profile_type t, struct notifier_block * n) | |
120 | { | |
121 | return -ENOSYS; | |
122 | } | |
123 | ||
124 | static inline int profile_event_unregister(enum profile_type t, struct notifier_block * n) | |
125 | { | |
126 | return -ENOSYS; | |
127 | } | |
128 | ||
129 | #define profile_task_exit(a) do { } while (0) | |
130 | #define profile_handoff_task(a) (0) | |
131 | #define profile_munmap(a) do { } while (0) | |
132 | ||
133 | static inline int register_timer_hook(int (*hook)(struct pt_regs *)) | |
134 | { | |
135 | return -ENOSYS; | |
136 | } | |
137 | ||
138 | static inline void unregister_timer_hook(int (*hook)(struct pt_regs *)) | |
139 | { | |
140 | return; | |
141 | } | |
142 | ||
143 | #endif /* CONFIG_PROFILING */ | |
144 | ||
1da177e4 | 145 | #endif /* _LINUX_PROFILE_H */ |