#ifndef _LINUX_PROFILE_H #define _LINUX_PROFILE_H #ifdef __KERNEL__ #include <linux/kernel.h> #include <linux/init.h> #include <linux/cpumask.h> #include <linux/cache.h> #include <asm/errno.h> extern int prof_on __read_mostly; #define CPU_PROFILING 1 #define SCHED_PROFILING 2 #define SLEEP_PROFILING 3 #define KVM_PROFILING 4 struct proc_dir_entry; struct pt_regs; struct notifier_block; /* init basic kernel profiler */ void __init profile_init(void); void profile_tick(int); /* * Add multiple profiler hits to a given address: */ void profile_hits(int, 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); } #ifdef CONFIG_PROC_FS void create_prof_cpu_mask(struct proc_dir_entry *); #else #define create_prof_cpu_mask(x) do { (void)(x); } while (0) #endif enum profile_type { PROFILE_TASK_EXIT, PROFILE_MUNMAP }; #ifdef CONFIG_PROFILING 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); int register_timer_hook(int (*hook)(struct pt_regs *)); void unregister_timer_hook(int (*hook)(struct pt_regs *)); /* Timer based profiling hook */ extern int (*timer_hook)(struct pt_regs *); struct pt_regs; #else 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) static inline int register_timer_hook(int (*hook)(struct pt_regs *)) { return -ENOSYS; } static inline void unregister_timer_hook(int (*hook)(struct pt_regs *)) { return; } #endif /* CONFIG_PROFILING */ #endif /* __KERNEL__ */ #endif /* _LINUX_PROFILE_H */