[ndctl PATCH v4 05/10] daxctl/list: add numa_node for device listings

[Vishal Verma <vishal.l.verma@intel.com>]

The kernel provides a 'target_node' attribute for dax devices. When
converting a dax device to the system-ram mode, the memory is hotplugged
into this numa node. It would be helpful to print this in device
listings so that it is easy for applications to detect the numa node to
which the new memory belongs.

Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
---
 util/json.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/util/json.c b/util/json.c
index babdc8c..b7ce719 100644
--- a/util/json.c
+++ b/util/json.c
@@ -271,6 +271,7 @@ struct json_object *util_daxctl_dev_to_json(struct daxctl_dev *dev,
 {
 	const char *devname = daxctl_dev_get_devname(dev);
 	struct json_object *jdev, *jobj;
+	int node;
 
 	jdev = json_object_new_object();
 	if (!devname || !jdev)
@@ -284,6 +285,13 @@ struct json_object *util_daxctl_dev_to_json(struct daxctl_dev *dev,
 	if (jobj)
 		json_object_object_add(jdev, "size", jobj);
 
+	node = daxctl_dev_get_target_node(dev);
+	if (node >= 0) {
+		jobj = json_object_new_int(node);
+		if (jobj)
+			json_object_object_add(jdev, "numa_node", jobj);
+	}
+
 	return jdev;
 }
 
-- 
2.20.1

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