1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef _LINUX_PROFILE_H |
3 | #define _LINUX_PROFILE_H |
4 | |
5 | #include <linux/kernel.h> |
6 | #include <linux/init.h> |
7 | #include <linux/cpumask.h> |
8 | #include <linux/cache.h> |
9 | |
10 | #include <asm/errno.h> |
11 | |
12 | #define CPU_PROFILING 1 |
13 | #define SCHED_PROFILING 2 |
14 | #define SLEEP_PROFILING 3 |
15 | #define KVM_PROFILING 4 |
16 | |
17 | struct proc_dir_entry; |
18 | struct notifier_block; |
19 | |
20 | #if defined(CONFIG_PROFILING) && defined(CONFIG_PROC_FS) |
21 | void create_prof_cpu_mask(void); |
22 | int create_proc_profile(void); |
23 | #else |
24 | static inline void create_prof_cpu_mask(void) |
25 | { |
26 | } |
27 | |
28 | static inline int create_proc_profile(void) |
29 | { |
30 | return 0; |
31 | } |
32 | #endif |
33 | |
34 | #ifdef CONFIG_PROFILING |
35 | |
36 | extern int prof_on __read_mostly; |
37 | |
38 | /* init basic kernel profiler */ |
39 | int profile_init(void); |
40 | int profile_setup(char *str); |
41 | void profile_tick(int type); |
42 | int setup_profiling_timer(unsigned int multiplier); |
43 | |
44 | /* |
45 | * Add multiple profiler hits to a given address: |
46 | */ |
47 | void profile_hits(int type, void *ip, unsigned int nr_hits); |
48 | |
49 | /* |
50 | * Single profiler hit: |
51 | */ |
52 | static inline void profile_hit(int type, void *ip) |
53 | { |
54 | /* |
55 | * Speedup for the common (no profiling enabled) case: |
56 | */ |
57 | if (unlikely(prof_on == type)) |
58 | profile_hits(type, ip, 1); |
59 | } |
60 | |
61 | struct task_struct; |
62 | struct mm_struct; |
63 | |
64 | #else |
65 | |
66 | #define prof_on 0 |
67 | |
68 | static inline int profile_init(void) |
69 | { |
70 | return 0; |
71 | } |
72 | |
73 | static inline void profile_tick(int type) |
74 | { |
75 | return; |
76 | } |
77 | |
78 | static inline void profile_hits(int type, void *ip, unsigned int nr_hits) |
79 | { |
80 | return; |
81 | } |
82 | |
83 | static inline void profile_hit(int type, void *ip) |
84 | { |
85 | return; |
86 | } |
87 | |
88 | |
89 | #endif /* CONFIG_PROFILING */ |
90 | |
91 | #endif /* _LINUX_PROFILE_H */ |
92 | |