void save_previous_kprobe(struct kprobe_ctlblk *kcb, struct kprobe *cur_p);
void restore_previous_kprobe(struct kprobe_ctlblk *kcb);
void set_current_kprobe(struct kprobe *p, struct pt_regs *regs, struct kprobe_ctlblk *kcb);
void save_previous_kprobe(struct kprobe_ctlblk *kcb, struct kprobe *cur_p);
void restore_previous_kprobe(struct kprobe_ctlblk *kcb);
void set_current_kprobe(struct kprobe *p, struct pt_regs *regs, struct kprobe_ctlblk *kcb);