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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) |
fbd387ae | 21 | void create_prof_cpu_mask(void); |
66f50ee3 | 22 | int create_proc_profile(void); |
b03f6489 | 23 | #else |
fbd387ae | 24 | static inline void create_prof_cpu_mask(void) |
cebbd3fb AM |
25 | { |
26 | } | |
66f50ee3 PM |
27 | |
28 | static inline int create_proc_profile(void) | |
29 | { | |
30 | return 0; | |
31 | } | |
b03f6489 AB |
32 | #endif |
33 | ||
34 | enum profile_type { | |
35 | PROFILE_TASK_EXIT, | |
36 | PROFILE_MUNMAP | |
37 | }; | |
38 | ||
39 | #ifdef CONFIG_PROFILING | |
40 | ||
41 | extern int prof_on __read_mostly; | |
42 | ||
1da177e4 | 43 | /* init basic kernel profiler */ |
22b8ce94 DH |
44 | int profile_init(void); |
45 | int profile_setup(char *str); | |
b03f6489 | 46 | void profile_tick(int type); |
ece8a684 IM |
47 | |
48 | /* | |
49 | * Add multiple profiler hits to a given address: | |
50 | */ | |
b03f6489 | 51 | void profile_hits(int type, void *ip, unsigned int nr_hits); |
ece8a684 IM |
52 | |
53 | /* | |
54 | * Single profiler hit: | |
55 | */ | |
56 | static inline void profile_hit(int type, void *ip) | |
57 | { | |
58 | /* | |
59 | * Speedup for the common (no profiling enabled) case: | |
60 | */ | |
61 | if (unlikely(prof_on == type)) | |
62 | profile_hits(type, ip, 1); | |
63 | } | |
64 | ||
1da177e4 LT |
65 | struct task_struct; |
66 | struct mm_struct; | |
67 | ||
68 | /* task is in do_exit() */ | |
69 | void profile_task_exit(struct task_struct * task); | |
70 | ||
71 | /* task is dead, free task struct ? Returns 1 if | |
72 | * the task was taken, 0 if the task should be freed. | |
73 | */ | |
74 | int profile_handoff_task(struct task_struct * task); | |
75 | ||
76 | /* sys_munmap */ | |
77 | void profile_munmap(unsigned long addr); | |
78 | ||
79 | int task_handoff_register(struct notifier_block * n); | |
80 | int task_handoff_unregister(struct notifier_block * n); | |
81 | ||
82 | int profile_event_register(enum profile_type, struct notifier_block * n); | |
83 | int profile_event_unregister(enum profile_type, struct notifier_block * n); | |
84 | ||
1da177e4 LT |
85 | struct pt_regs; |
86 | ||
87 | #else | |
88 | ||
b03f6489 AB |
89 | #define prof_on 0 |
90 | ||
22b8ce94 | 91 | static inline int profile_init(void) |
b03f6489 | 92 | { |
22b8ce94 | 93 | return 0; |
b03f6489 AB |
94 | } |
95 | ||
96 | static inline void profile_tick(int type) | |
97 | { | |
98 | return; | |
99 | } | |
100 | ||
101 | static inline void profile_hits(int type, void *ip, unsigned int nr_hits) | |
102 | { | |
103 | return; | |
104 | } | |
105 | ||
106 | static inline void profile_hit(int type, void *ip) | |
107 | { | |
108 | return; | |
109 | } | |
110 | ||
1da177e4 LT |
111 | static inline int task_handoff_register(struct notifier_block * n) |
112 | { | |
113 | return -ENOSYS; | |
114 | } | |
115 | ||
116 | static inline int task_handoff_unregister(struct notifier_block * n) | |
117 | { | |
118 | return -ENOSYS; | |
119 | } | |
120 | ||
121 | static inline int profile_event_register(enum profile_type t, struct notifier_block * n) | |
122 | { | |
123 | return -ENOSYS; | |
124 | } | |
125 | ||
126 | static inline int profile_event_unregister(enum profile_type t, struct notifier_block * n) | |
127 | { | |
128 | return -ENOSYS; | |
129 | } | |
130 | ||
131 | #define profile_task_exit(a) do { } while (0) | |
132 | #define profile_handoff_task(a) (0) | |
133 | #define profile_munmap(a) do { } while (0) | |
134 | ||
1da177e4 LT |
135 | #endif /* CONFIG_PROFILING */ |
136 | ||
1da177e4 | 137 | #endif /* _LINUX_PROFILE_H */ |