1 #ifndef _LINUX_PROFILE_H 2 #define _LINUX_PROFILE_H 3 4 #ifdef __KERNEL__ 5 6 #include <linux/kernel.h> 7 #include <linux/config.h> 8 #include <linux/init.h> 9 #include <linux/cpumask.h> 10 #include <asm/errno.h> 11 12 #define CPU_PROFILING 1 13 #define SCHED_PROFILING 2 14 15 struct proc_dir_entry; 16 struct pt_regs; 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 notifier_block; 36 struct task_struct; 37 struct mm_struct; 38 39 /* task is in do_exit() */ 40 void profile_task_exit(struct task_struct * task); 41 42 /* task is dead, free task struct ? Returns 1 if 43 * the task was taken, 0 if the task should be freed. 44 */ 45 int profile_handoff_task(struct task_struct * task); 46 47 /* sys_munmap */ 48 void profile_munmap(unsigned long addr); 49 50 int task_handoff_register(struct notifier_block * n); 51 int task_handoff_unregister(struct notifier_block * n); 52 53 int profile_event_register(enum profile_type, struct notifier_block * n); 54 int profile_event_unregister(enum profile_type, struct notifier_block * n); 55 56 int register_timer_hook(int (*hook)(struct pt_regs *)); 57 void unregister_timer_hook(int (*hook)(struct pt_regs *)); 58 59 /* Timer based profiling hook */ 60 extern int (*timer_hook)(struct pt_regs *); 61 62 struct pt_regs; 63 64 #else 65 66 static inline int task_handoff_register(struct notifier_block * n) 67 { 68 return -ENOSYS; 69 } 70 71 static inline int task_handoff_unregister(struct notifier_block * n) 72 { 73 return -ENOSYS; 74 } 75 76 static inline int profile_event_register(enum profile_type t, struct notifier_block * n) 77 { 78 return -ENOSYS; 79 } 80 81 static inline int profile_event_unregister(enum profile_type t, struct notifier_block * n) 82 { 83 return -ENOSYS; 84 } 85 86 #define profile_task_exit(a) do { } while (0) 87 #define profile_handoff_task(a) (0) 88 #define profile_munmap(a) do { } while (0) 89 90 static inline int register_timer_hook(int (*hook)(struct pt_regs *)) 91 { 92 return -ENOSYS; 93 } 94 95 static inline void unregister_timer_hook(int (*hook)(struct pt_regs *)) 96 { 97 return; 98 } 99 100 #endif /* CONFIG_PROFILING */ 101 102 #endif /* __KERNEL__ */ 103 104 #endif /* _LINUX_PROFILE_H */ 105