From e81f890c7ae1c940c7f52b8984e8728706489728 Mon Sep 17 00:00:00 2001

From: Vishal Verma <vishal.l.verma@intel.com>

Date: Wed, 31 Mar 2021 13:51:35 -0600

Subject: [PATCH 017/217] daxctl: emit counts of total and online memblocks

Fir daxctl device listings, if in 'system-ram' mode, it is useful to

know whether the memory associated with the device is online or not.

Since the memory is comprised of a number of 'memblocks', and it is

possible (albeit rare) to have a subset of them online, and the rest

offline, we can't just use a boolean online-or-offline flag for the

state.

Add a couple of counts, one for the total number of memblocks associated

with the device, and another for the ones that are online.

Link: https://github.com/pmem/ndctl/issues/139

Cc: Dan Williams <dan.j.williams@intel.com>

Cc: Dave Hansen <dave.hansen@linux.intel.com>

Reported-by: Steve Scargall <steve.scargall@intel.com>

Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>

---

 util/json.c | 11 +++++++++++

 1 file changed, 11 insertions(+)

diff --git a/util/json.c b/util/json.c

index ca0167b..a8d2412 100644

--- a/util/json.c

+++ b/util/json.c

@@ -482,6 +482,17 @@ struct json_object *util_daxctl_dev_to_json(struct daxctl_dev *dev,

 		json_object_object_add(jdev, "mode", jobj);

 	if (mem && daxctl_dev_get_resource(dev) != 0) {

+		int num_sections = daxctl_memory_num_sections(mem);

+		int num_online = daxctl_memory_is_online(mem);

+

+		jobj = json_object_new_int(num_online);

+		if (jobj)

+			json_object_object_add(jdev, "online_memblocks", jobj);

+

+		jobj = json_object_new_int(num_sections);

+		if (jobj)

+			json_object_object_add(jdev, "total_memblocks", jobj);

+

 		movable = daxctl_memory_is_movable(mem);

 		if (movable == 1)

 			jobj = json_object_new_boolean(true);

-- 

2.27.0