| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef _LINUX_PROFILE_H |
| #define _LINUX_PROFILE_H |
| |
| #include <linux/kernel.h> |
| #include <linux/init.h> |
| #include <linux/cpumask.h> |
| #include <linux/cache.h> |
| |
| #include <asm/errno.h> |
| |
| #define CPU_PROFILING 1 |
| #define SCHED_PROFILING 2 |
| #define SLEEP_PROFILING 3 |
| #define KVM_PROFILING 4 |
| |
| struct proc_dir_entry; |
| struct notifier_block; |
| |
| #if defined(CONFIG_PROFILING) && defined(CONFIG_PROC_FS) |
| void create_prof_cpu_mask(void); |
| int create_proc_profile(void); |
| #else |
| static inline void create_prof_cpu_mask(void) |
| { |
| } |
| |
| static inline int create_proc_profile(void) |
| { |
| return 0; |
| } |
| #endif |
| |
| enum profile_type { |
| PROFILE_TASK_EXIT, |
| PROFILE_MUNMAP |
| }; |
| |
| #ifdef CONFIG_PROFILING |
| |
| extern int prof_on __read_mostly; |
| |
| /* init basic kernel profiler */ |
| int profile_init(void); |
| int profile_setup(char *str); |
| void profile_tick(int type); |
| int setup_profiling_timer(unsigned int multiplier); |
| |
| /* |
| * Add multiple profiler hits to a given address: |
| */ |
| void profile_hits(int type, void *ip, unsigned int nr_hits); |
| |
| /* |
| * Single profiler hit: |
| */ |
| static inline void profile_hit(int type, void *ip) |
| { |
| /* |
| * Speedup for the common (no profiling enabled) case: |
| */ |
| if (unlikely(prof_on == type)) |
| profile_hits(type, ip, 1); |
| } |
| |
| struct task_struct; |
| struct mm_struct; |
| |
| /* task is in do_exit() */ |
| void profile_task_exit(struct task_struct * task); |
| |
| /* task is dead, free task struct ? Returns 1 if |
| * the task was taken, 0 if the task should be freed. |
| */ |
| int profile_handoff_task(struct task_struct * task); |
| |
| /* sys_munmap */ |
| void profile_munmap(unsigned long addr); |
| |
| int task_handoff_register(struct notifier_block * n); |
| int task_handoff_unregister(struct notifier_block * n); |
| |
| int profile_event_register(enum profile_type, struct notifier_block * n); |
| int profile_event_unregister(enum profile_type, struct notifier_block * n); |
| |
| #else |
| |
| #define prof_on 0 |
| |
| static inline int profile_init(void) |
| { |
| return 0; |
| } |
| |
| static inline void profile_tick(int type) |
| { |
| return; |
| } |
| |
| static inline void profile_hits(int type, void *ip, unsigned int nr_hits) |
| { |
| return; |
| } |
| |
| static inline void profile_hit(int type, void *ip) |
| { |
| return; |
| } |
| |
| static inline int task_handoff_register(struct notifier_block * n) |
| { |
| return -ENOSYS; |
| } |
| |
| static inline int task_handoff_unregister(struct notifier_block * n) |
| { |
| return -ENOSYS; |
| } |
| |
| static inline int profile_event_register(enum profile_type t, struct notifier_block * n) |
| { |
| return -ENOSYS; |
| } |
| |
| static inline int profile_event_unregister(enum profile_type t, struct notifier_block * n) |
| { |
| return -ENOSYS; |
| } |
| |
| #define profile_task_exit(a) do { } while (0) |
| #define profile_handoff_task(a) (0) |
| #define profile_munmap(a) do { } while (0) |
| |
| #endif /* CONFIG_PROFILING */ |
| |
| #endif /* _LINUX_PROFILE_H */ |