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From e81f890c7ae1c940c7f52b8984e8728706489728 Mon Sep 17 00:00:00 2001
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From: Vishal Verma <vishal.l.verma@intel.com>
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Date: Wed, 31 Mar 2021 13:51:35 -0600
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Subject: [PATCH 017/217] daxctl: emit counts of total and online memblocks
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Fir daxctl device listings, if in 'system-ram' mode, it is useful to
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know whether the memory associated with the device is online or not.
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Since the memory is comprised of a number of 'memblocks', and it is
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possible (albeit rare) to have a subset of them online, and the rest
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offline, we can't just use a boolean online-or-offline flag for the
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state.
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Add a couple of counts, one for the total number of memblocks associated
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with the device, and another for the ones that are online.
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Link: https://github.com/pmem/ndctl/issues/139
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Cc: Dan Williams <dan.j.williams@intel.com>
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Cc: Dave Hansen <dave.hansen@linux.intel.com>
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Reported-by: Steve Scargall <steve.scargall@intel.com>
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Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
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---
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util/json.c | 11 +++++++++++
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1 file changed, 11 insertions(+)
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diff --git a/util/json.c b/util/json.c
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index ca0167b..a8d2412 100644
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--- a/util/json.c
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+++ b/util/json.c
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@@ -482,6 +482,17 @@ struct json_object *util_daxctl_dev_to_json(struct daxctl_dev *dev,
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json_object_object_add(jdev, "mode", jobj);
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if (mem && daxctl_dev_get_resource(dev) != 0) {
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+ int num_sections = daxctl_memory_num_sections(mem);
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+ int num_online = daxctl_memory_is_online(mem);
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+
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+ jobj = json_object_new_int(num_online);
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+ if (jobj)
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+ json_object_object_add(jdev, "online_memblocks", jobj);
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+
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+ jobj = json_object_new_int(num_sections);
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+ if (jobj)
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+ json_object_object_add(jdev, "total_memblocks", jobj);
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+
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movable = daxctl_memory_is_movable(mem);
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if (movable == 1)
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jobj = json_object_new_boolean(true);
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--
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2.27.0
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