1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _LINUX_PROFILE_H
3 #define _LINUX_PROFILE_H
5 #include <linux/kernel.h>
6 #include <linux/init.h>
7 #include <linux/cpumask.h>
8 #include <linux/cache.h>
10 #include <asm/errno.h>
12 #define CPU_PROFILING 1
13 #define SCHED_PROFILING 2
14 #define SLEEP_PROFILING 3
15 #define KVM_PROFILING 4
17 struct proc_dir_entry;
18 struct notifier_block;
20 #if defined(CONFIG_PROFILING) && defined(CONFIG_PROC_FS)
21 void create_prof_cpu_mask(void);
22 int create_proc_profile(void);
24 static inline void create_prof_cpu_mask(void)
28 static inline int create_proc_profile(void)
39 #ifdef CONFIG_PROFILING
41 extern int prof_on __read_mostly;
43 /* init basic kernel profiler */
44 int profile_init(void);
45 int profile_setup(char *str);
46 void profile_tick(int type);
47 int setup_profiling_timer(unsigned int multiplier);
50 * Add multiple profiler hits to a given address:
52 void profile_hits(int type, void *ip, unsigned int nr_hits);
55 * Single profiler hit:
57 static inline void profile_hit(int type, void *ip)
60 * Speedup for the common (no profiling enabled) case:
62 if (unlikely(prof_on == type))
63 profile_hits(type, ip, 1);
69 /* task is in do_exit() */
70 void profile_task_exit(struct task_struct * task);
72 /* task is dead, free task struct ? Returns 1 if
73 * the task was taken, 0 if the task should be freed.
75 int profile_handoff_task(struct task_struct * task);
78 void profile_munmap(unsigned long addr);
80 int task_handoff_register(struct notifier_block * n);
81 int task_handoff_unregister(struct notifier_block * n);
83 int profile_event_register(enum profile_type, struct notifier_block * n);
84 int profile_event_unregister(enum profile_type, struct notifier_block * n);
90 static inline int profile_init(void)
95 static inline void profile_tick(int type)
100 static inline void profile_hits(int type, void *ip, unsigned int nr_hits)
105 static inline void profile_hit(int type, void *ip)
110 static inline int task_handoff_register(struct notifier_block * n)
115 static inline int task_handoff_unregister(struct notifier_block * n)
120 static inline int profile_event_register(enum profile_type t, struct notifier_block * n)
125 static inline int profile_event_unregister(enum profile_type t, struct notifier_block * n)
130 #define profile_task_exit(a) do { } while (0)
131 #define profile_handoff_task(a) (0)
132 #define profile_munmap(a) do { } while (0)
134 #endif /* CONFIG_PROFILING */
136 #endif /* _LINUX_PROFILE_H */