190 static void __kprobes save_previous_kprobe(struct kprobe_ctlblk *kcb)  in save_previous_kprobe()  argument
192 	kcb->prev_kprobe.kp = kprobe_running();  in save_previous_kprobe()
193 	kcb->prev_kprobe.status = kcb->kprobe_status;  in save_previous_kprobe()
196 static void __kprobes restore_previous_kprobe(struct kprobe_ctlblk *kcb)  in restore_previous_kprobe()  argument
198 	__this_cpu_write(current_kprobe, kcb->prev_kprobe.kp);  in restore_previous_kprobe()
199 	kcb->kprobe_status = kcb->prev_kprobe.status;  in restore_previous_kprobe()
222 singlestep(struct kprobe *p, struct pt_regs *regs, struct kprobe_ctlblk *kcb)  in singlestep()  argument
237 	struct kprobe_ctlblk *kcb;  in kprobe_handler()  local
239 	kcb = get_kprobe_ctlblk();  in kprobe_handler()
267 			switch (kcb->kprobe_status) {  in kprobe_handler()
273 				save_previous_kprobe(kcb);  in kprobe_handler()
275 				kcb->kprobe_status = KPROBE_REENTER;  in kprobe_handler()
276 				singlestep(p, regs, kcb);  in kprobe_handler()
277 				restore_previous_kprobe(kcb);  in kprobe_handler()
291 			kcb->kprobe_status = KPROBE_HIT_ACTIVE;  in kprobe_handler()
301 				kcb->kprobe_status = KPROBE_HIT_SS;  in kprobe_handler()
302 				singlestep(p, regs, kcb);  in kprobe_handler()
304 					kcb->kprobe_status = KPROBE_HIT_SSDONE;  in kprobe_handler()
332 	struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();  in kprobe_fault_handler()  local
334 	switch (kcb->kprobe_status) {  in kprobe_fault_handler()
345 		if (kcb->kprobe_status == KPROBE_REENTER) {  in kprobe_fault_handler()
346 			restore_previous_kprobe(kcb);  in kprobe_fault_handler()