Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
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
17struct proc_dir_entry;
18struct notifier_block;
19
20#if defined(CONFIG_PROFILING) && defined(CONFIG_PROC_FS)
21int create_proc_profile(void);
22#else
23static inline int create_proc_profile(void)
24{
25 return 0;
26}
27#endif
28
29#ifdef CONFIG_PROFILING
30
31extern int prof_on __read_mostly;
32
33/* init basic kernel profiler */
34int profile_init(void);
35int profile_setup(char *str);
36void profile_tick(int type);
37int setup_profiling_timer(unsigned int multiplier);
38
39/*
40 * Add multiple profiler hits to a given address:
41 */
42void profile_hits(int type, void *ip, unsigned int nr_hits);
43
44/*
45 * Single profiler hit:
46 */
47static inline void profile_hit(int type, void *ip)
48{
49 /*
50 * Speedup for the common (no profiling enabled) case:
51 */
52 if (unlikely(prof_on == type))
53 profile_hits(type, ip, 1);
54}
55
56struct task_struct;
57struct mm_struct;
58
59#else
60
61#define prof_on 0
62
63static inline int profile_init(void)
64{
65 return 0;
66}
67
68static inline void profile_tick(int type)
69{
70 return;
71}
72
73static inline void profile_hits(int type, void *ip, unsigned int nr_hits)
74{
75 return;
76}
77
78static inline void profile_hit(int type, void *ip)
79{
80 return;
81}
82
83
84#endif /* CONFIG_PROFILING */
85
86#endif /* _LINUX_PROFILE_H */