1 #ifndef _LINUX_PROFILE_H 2 #define _LINUX_PROFILE_H 3 4 #ifdef __KERNEL__ 5 6 #include <linux/kernel.h> 7 #include <linux/init.h> 8 #include <linux/cpumask.h> 9 #include <asm/errno.h> 10 11 #define CPU_PROFILING 1 12 #define SCHED_PROFILING 2 13 14 struct proc_dir_entry; 15 struct pt_regs; 16 struct notifier_block; 17 18 /* init basic kernel profiler */ 19 void __init profile_init(void); 20 void profile_tick(int, struct pt_regs *); 21 void profile_hit(int, void *); 22 #ifdef CONFIG_PROC_FS 23 void create_prof_cpu_mask(struct proc_dir_entry *); 24 #else 25 #define create_prof_cpu_mask(x) do { (void)(x); } while (0) 26 #endif 27 28 enum profile_type { 29 PROFILE_TASK_EXIT, 30 PROFILE_MUNMAP 31 }; 32 33 #ifdef CONFIG_PROFILING 34 35 struct task_struct; 36 struct mm_struct; 37 38 /* task is in do_exit() */ 39 void profile_task_exit(struct task_struct * task); 40 41 /* task is dead, free task struct ? Returns 1 if 42 * the task was taken, 0 if the task should be freed. 43 */ 44 int profile_handoff_task(struct task_struct * task); 45 46 /* sys_munmap */ 47 void profile_munmap(unsigned long addr); 48 49 int task_handoff_register(struct notifier_block * n); 50 int task_handoff_unregister(struct notifier_block * n); 51 52 int profile_event_register(enum profile_type, struct notifier_block * n); 53 int profile_event_unregister(enum profile_type, struct notifier_block * n); 54 55 int register_timer_hook(int (*hook)(struct pt_regs *)); 56 void unregister_timer_hook(int (*hook)(struct pt_regs *)); 57 58 /* Timer based profiling hook */ 59 extern int (*timer_hook)(struct pt_regs *); 60 61 struct pt_regs; 62 63 #else 64 65 static inline int task_handoff_register(struct notifier_block * n) 66 { 67 return -ENOSYS; 68 } 69 70 static inline int task_handoff_unregister(struct notifier_block * n) 71 { 72 return -ENOSYS; 73 } 74 75 static inline int profile_event_register(enum profile_type t, struct notifier_block * n) 76 { 77 return -ENOSYS; 78 } 79 80 static inline int profile_event_unregister(enum profile_type t, struct notifier_block * n) 81 { 82 return -ENOSYS; 83 } 84 85 #define profile_task_exit(a) do { } while (0) 86 #define profile_handoff_task(a) (0) 87 #define profile_munmap(a) do { } while (0) 88 89 static inline int register_timer_hook(int (*hook)(struct pt_regs *)) 90 { 91 return -ENOSYS; 92 } 93 94 static inline void unregister_timer_hook(int (*hook)(struct pt_regs *)) 95 { 96 return; 97 } 98 99 #endif /* CONFIG_PROFILING */ 100 101 #endif /* __KERNEL__ */ 102 103 #endif /* _LINUX_PROFILE_H */ 104