6565 void trace_user_fault_destroy(struct trace_user_buf_info *tinfo)  in trace_user_fault_destroy()  argument
6570 	if (!tinfo || !tinfo->tbuf)  in trace_user_fault_destroy()
6574 		buf = per_cpu_ptr(tinfo->tbuf, cpu)->buf;  in trace_user_fault_destroy()
6577 	free_percpu(tinfo->tbuf);  in trace_user_fault_destroy()
6580 static int user_fault_buffer_enable(struct trace_user_buf_info *tinfo, size_t size)  in user_fault_buffer_enable()  argument
6587 	tinfo->tbuf = alloc_percpu(struct trace_user_buf);  in user_fault_buffer_enable()
6588 	if (!tinfo->tbuf)  in user_fault_buffer_enable()
6591 	tinfo->ref = 1;  in user_fault_buffer_enable()
6592 	tinfo->size = size;  in user_fault_buffer_enable()
6596 		per_cpu_ptr(tinfo->tbuf, cpu)->buf = NULL;  in user_fault_buffer_enable()
6604 		per_cpu_ptr(tinfo->tbuf, cpu)->buf = buf;  in user_fault_buffer_enable()
6611 static void user_buffer_free(struct trace_user_buf_info **tinfo)  in user_buffer_free()  argument
6615 	trace_user_fault_destroy(*tinfo);  in user_buffer_free()
6616 	kfree(*tinfo);  in user_buffer_free()
6617 	*tinfo = NULL;  in user_buffer_free()
6621 static int user_buffer_init(struct trace_user_buf_info **tinfo, size_t size)  in user_buffer_init()  argument
6628 	if (!*tinfo) {  in user_buffer_init()
6630 		*tinfo = kzalloc_obj(**tinfo);  in user_buffer_init()
6631 		if (!*tinfo)  in user_buffer_init()
6635 	ret = user_fault_buffer_enable(*tinfo, size);  in user_buffer_init()
6637 		user_buffer_free(tinfo);  in user_buffer_init()
6643 static void user_buffer_put(struct trace_user_buf_info **tinfo)  in user_buffer_put()  argument
6647 	if (WARN_ON_ONCE(!*tinfo || !(*tinfo)->ref))  in user_buffer_put()
6650 	if (--(*tinfo)->ref)  in user_buffer_put()
6653 	user_buffer_free(tinfo);  in user_buffer_put()
6670 int trace_user_fault_init(struct trace_user_buf_info *tinfo, size_t size)  in trace_user_fault_init()  argument
6674 	if (!tinfo)  in trace_user_fault_init()
6679 	ret = user_buffer_init(&tinfo, size);  in trace_user_fault_init()
6681 		trace_user_fault_destroy(tinfo);  in trace_user_fault_init()
6694 int trace_user_fault_get(struct trace_user_buf_info *tinfo)  in trace_user_fault_get()  argument
6696 	if (!tinfo)  in trace_user_fault_get()
6701 	tinfo->ref++;  in trace_user_fault_get()
6702 	return tinfo->ref;  in trace_user_fault_get()
6713 int trace_user_fault_put(struct trace_user_buf_info *tinfo)  in trace_user_fault_put()  argument
6717 	if (WARN_ON_ONCE(!tinfo || !tinfo->ref))  in trace_user_fault_put()
6720 	--tinfo->ref;  in trace_user_fault_put()
6721 	return tinfo->ref;  in trace_user_fault_put()
6756 char *trace_user_fault_read(struct trace_user_buf_info *tinfo,  in trace_user_fault_read()  argument
6761 	char *buffer = per_cpu_ptr(tinfo->tbuf, cpu)->buf;  in trace_user_fault_read()
6772 	if (size > tinfo->size)  in trace_user_fault_read()
6800 			buffer = per_cpu_ptr(tinfo->tbuf, cpu)->buf;  in trace_user_fault_read()