CFLAGS_vfio_ccw_trace.o := -I$(src)
obj-y += airq.o blacklist.o chsc.o cio.o css.o chp.o idset.o isc.o \
- fcx.o itcw.o crw.o ccwreq.o trace.o ioasm.o
+ fcx.o itcw.o crw.o ccwreq.o trace.o ioasm.o cio_debugfs.o
ccw_device-objs += device.o device_fsm.o device_ops.o
ccw_device-objs += device_id.o device_pgid.o device_status.o
obj-y += ccw_device.o cmf.o
debug_event(cio_debug_trace_id, level, data, length);
}
+/* For the CIO debugfs related features */
+extern struct dentry *cio_debugfs_dir;
+
#endif
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * S/390 common I/O debugfs interface
+ *
+ * Copyright IBM Corp. 2021
+ * Author(s): Vineeth Vijayan <vneethv@linux.ibm.com>
+ */
+
+#include <linux/debugfs.h>
+#include "cio_debug.h"
+
+struct dentry *cio_debugfs_dir;
+
+/* Create the debugfs directory for CIO under the arch_debugfs_dir
+ * i.e /sys/kernel/debug/s390/cio
+ */
+static int __init cio_debugfs_init(void)
+{
+ cio_debugfs_dir = debugfs_create_dir("cio", arch_debugfs_dir);
+
+ return 0;
+}
+subsys_initcall(cio_debugfs_init);