[PATCH 02/18] nvmet/debugfs: Export controller CIU and CIRN via debugfs

[Mohamed Khalfella <mkhalfella@purestorage.com>]

Export ctrl->ciu and ctrl->cirn as debugfs files under controller
debugfs directory.

Signed-off-by: Mohamed Khalfella <mkhalfella@purestorage.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
---
 drivers/nvme/target/debugfs.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/drivers/nvme/target/debugfs.c b/drivers/nvme/target/debugfs.c
index e85fe1d4c9f8..4de460879d0b 100644
--- a/drivers/nvme/target/debugfs.c
+++ b/drivers/nvme/target/debugfs.c
@@ -152,6 +152,23 @@ static int nvmet_ctrl_tls_concat_show(struct seq_file *m, void *p)
 }
 NVMET_DEBUGFS_ATTR(nvmet_ctrl_tls_concat);
 #endif
+static int nvmet_ctrl_instance_ciu_show(struct seq_file *m, void *p)
+{
+	struct nvmet_ctrl *ctrl = m->private;
+
+	seq_printf(m, "%02x\n", ctrl->ciu);
+	return 0;
+}
+NVMET_DEBUGFS_ATTR(nvmet_ctrl_instance_ciu);
+
+static int nvmet_ctrl_instance_cirn_show(struct seq_file *m, void *p)
+{
+	struct nvmet_ctrl *ctrl = m->private;
+
+	seq_printf(m, "%016llx\n", ctrl->cirn);
+	return 0;
+}
+NVMET_DEBUGFS_ATTR(nvmet_ctrl_instance_cirn);
 
 static const char *const nvmet_pr_type_names[] = {
 	[NVME_PR_WRITE_EXCLUSIVE]		= "write_exclusive",
@@ -287,6 +304,10 @@ int nvmet_debugfs_ctrl_setup(struct nvmet_ctrl *ctrl)
 	debugfs_create_file("tls_key", S_IRUSR, ctrl->debugfs_dir, ctrl,
 			    &nvmet_ctrl_tls_key_fops);
 #endif
+	debugfs_create_file("ciu", S_IRUSR, ctrl->debugfs_dir, ctrl,
+			    &nvmet_ctrl_instance_ciu_fops);
+	debugfs_create_file("cirn", S_IRUSR, ctrl->debugfs_dir, ctrl,
+			    &nvmet_ctrl_instance_cirn_fops);
 	return 0;
 }
 
-- 
2.55.0