--- zzzz-none-000/linux-4.4.60/drivers/tty/sysrq.c	2017-04-08 07:53:53.000000000 +0000
+++ hawkeye-5590-729/linux-4.4.60/drivers/tty/sysrq.c	2022-03-30 14:21:52.000000000 +0000
@@ -474,6 +474,7 @@
 	/* x: May be registered on sparc64 for global PMU dump */
 	NULL,				/* x */
 	/* y: May be registered on sparc64 for global register dump */
+	/* y: May be registered for mini dump */
 	NULL,				/* y */
 	&sysrq_ftrace_dump_op,		/* z */
 };