797 save_previous_kprobe(struct kprobe_ctlblk *kcb)  in save_previous_kprobe()  argument
799 	kcb->prev_kprobe.kp = kprobe_running();  in save_previous_kprobe()
800 	kcb->prev_kprobe.status = kcb->kprobe_status;  in save_previous_kprobe()
801 	kcb->prev_kprobe.old_flags = kcb->kprobe_old_flags;  in save_previous_kprobe()
802 	kcb->prev_kprobe.saved_flags = kcb->kprobe_saved_flags;  in save_previous_kprobe()
806 restore_previous_kprobe(struct kprobe_ctlblk *kcb)  in restore_previous_kprobe()  argument
808 	__this_cpu_write(current_kprobe, kcb->prev_kprobe.kp);  in restore_previous_kprobe()
809 	kcb->kprobe_status = kcb->prev_kprobe.status;  in restore_previous_kprobe()
810 	kcb->kprobe_old_flags = kcb->prev_kprobe.old_flags;  in restore_previous_kprobe()
811 	kcb->kprobe_saved_flags = kcb->prev_kprobe.saved_flags;  in restore_previous_kprobe()
816 		   struct kprobe_ctlblk *kcb)  in set_current_kprobe()  argument
819 	kcb->kprobe_saved_flags = kcb->kprobe_old_flags  in set_current_kprobe()
824 			       struct kprobe_ctlblk *kcb)  in kprobe_post_process()  argument
827 	if (kcb->kprobe_status == KPROBE_REENTER) {  in kprobe_post_process()
829 		restore_previous_kprobe(kcb);  in kprobe_post_process()
835 		kcb->kprobe_status = KPROBE_HIT_SSDONE;  in kprobe_post_process()
844 			     struct kprobe_ctlblk *kcb, int reenter)  in setup_singlestep()  argument
864 		save_previous_kprobe(kcb);  in setup_singlestep()
865 		set_current_kprobe(p, regs, kcb);  in setup_singlestep()
866 		kcb->kprobe_status = KPROBE_REENTER;  in setup_singlestep()
868 		kcb->kprobe_status = KPROBE_HIT_SS;  in setup_singlestep()
872 		kprobe_post_process(p, regs, kcb);  in setup_singlestep()
901 			      struct kprobe_ctlblk *kcb)  in resume_singlestep()  argument
907 	regs->flags |= kcb->kprobe_saved_flags;  in resume_singlestep()
919 			  struct kprobe_ctlblk *kcb)  in reenter_kprobe()  argument
921 	switch (kcb->kprobe_status) {  in reenter_kprobe()
926 		setup_singlestep(p, regs, kcb, 1);  in reenter_kprobe()
948 static nokprobe_inline int kprobe_is_ss(struct kprobe_ctlblk *kcb)  in kprobe_is_ss()  argument
950 	return (kcb->kprobe_status == KPROBE_HIT_SS ||  in kprobe_is_ss()
951 		kcb->kprobe_status == KPROBE_REENTER);  in kprobe_is_ss()
962 	struct kprobe_ctlblk *kcb;  in kprobe_int3_handler()  local
974 	kcb = get_kprobe_ctlblk();  in kprobe_int3_handler()
979 			if (reenter_kprobe(p, regs, kcb))  in kprobe_int3_handler()
982 			set_current_kprobe(p, regs, kcb);  in kprobe_int3_handler()
983 			kcb->kprobe_status = KPROBE_HIT_ACTIVE;  in kprobe_int3_handler()
993 				setup_singlestep(p, regs, kcb, 0);  in kprobe_int3_handler()
998 	} else if (kprobe_is_ss(kcb)) {  in kprobe_int3_handler()
1003 			resume_singlestep(p, regs, kcb);  in kprobe_int3_handler()
1004 			kprobe_post_process(p, regs, kcb);  in kprobe_int3_handler()
1016 	struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();  in kprobe_fault_handler()  local
1020 		WARN_ON(kcb->kprobe_status != KPROBE_HIT_SS &&  in kprobe_fault_handler()
1021 			kcb->kprobe_status != KPROBE_REENTER);  in kprobe_fault_handler()
1035 		regs->flags |= kcb->kprobe_old_flags;  in kprobe_fault_handler()
1037 		if (kcb->kprobe_status == KPROBE_REENTER)  in kprobe_fault_handler()
1038 			restore_previous_kprobe(kcb);  in kprobe_fault_handler()