From: Vishal Verma <vishal.l.verma@intel.com>
To: <linux-nvdimm@lists.01.org>
Cc: Steve Scargall <steve.scargall@intel.com>,
Dave Hansen <dave.hansen@linux.intel.com>
Subject: [ndctl PATCH] daxctl: emit counts of total and online memblocks
Date: Wed, 31 Mar 2021 13:56:19 -0600 [thread overview]
Message-ID: <20210331195619.533491-1-vishal.l.verma@intel.com> (raw)
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);
--
2.30.2
_______________________________________________
Linux-nvdimm mailing list -- linux-nvdimm@lists.01.org
To unsubscribe send an email to linux-nvdimm-leave@lists.01.org
reply other threads:[~2021-03-31 19:56 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210331195619.533491-1-vishal.l.verma@intel.com \
--to=vishal.l.verma@intel.com \
--cc=dave.hansen@linux.intel.com \
--cc=linux-nvdimm@lists.01.org \
--cc=steve.scargall@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).