linux-kernel - [RFC] memory tier, sysfs: rename attribute "nodes" to "nodes

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Message-Id: <20221018052541.265708-1-ying.huang@intel.com>
Date:   Tue, 18 Oct 2022 13:25:41 +0800
From:   Huang Ying <ying.huang@...el.com>
To:     linux-mm@...ck.org
Cc:     linux-kernel@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        Huang Ying <ying.huang@...el.com>,
        "Aneesh Kumar K . V" <aneesh.kumar@...ux.ibm.com>,
        Alistair Popple <apopple@...dia.com>,
        Bharata B Rao <bharata@....com>,
        Dan Williams <dan.j.williams@...el.com>,
        Dave Hansen <dave.hansen@...el.com>,
        Davidlohr Bueso <dave@...olabs.net>,
        Hesham Almatary <hesham.almatary@...wei.com>,
        Jagdish Gediya <jvgediya.oss@...il.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        Michal Hocko <mhocko@...nel.org>,
        Tim Chen <tim.c.chen@...el.com>, Wei Xu <weixugc@...gle.com>,
        Yang Shi <shy828301@...il.com>
Subject: [RFC] memory tier, sysfs: rename attribute "nodes" to "nodes_list"

In sysfs, we use attribute name "cpus" for cpu mask and "cpus_list"
for cpu list.  For example, in my system,

 $ cat /sys/devices/system/cpu/cpu2/topology/core_cpus
 0,00100004
 $ cat /sys/devices/system/cpu/cpu2/topology/core_cpus_list
 2,20

It looks reasonable to use "nodes" for node mask and "nodes_list" for
node list.  So, rename the attribute to follow the naming convention.

Signed-off-by: "Huang, Ying" <ying.huang@...el.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@...ux.ibm.com>
Cc: Alistair Popple <apopple@...dia.com>
Cc: Bharata B Rao <bharata@....com>
Cc: Dan Williams <dan.j.williams@...el.com>
Cc: Dave Hansen <dave.hansen@...el.com>
Cc: Davidlohr Bueso <dave@...olabs.net>
Cc: Hesham Almatary <hesham.almatary@...wei.com>
Cc: Jagdish Gediya <jvgediya.oss@...il.com>
Cc: Johannes Weiner <hannes@...xchg.org>
Cc: Jonathan Cameron <Jonathan.Cameron@...wei.com>
Cc: Michal Hocko <mhocko@...nel.org>
Cc: Tim Chen <tim.c.chen@...el.com>
Cc: Wei Xu <weixugc@...gle.com>
Cc: Yang Shi <shy828301@...il.com>
---
 Documentation/ABI/testing/sysfs-kernel-mm-memory-tiers | 4 ++--
 mm/memory-tiers.c                                      | 8 ++++----
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/Documentation/ABI/testing/sysfs-kernel-mm-memory-tiers b/Documentation/ABI/testing/sysfs-kernel-mm-memory-tiers
index 45985e411f13..af07e166f559 100644
--- a/Documentation/ABI/testing/sysfs-kernel-mm-memory-tiers
+++ b/Documentation/ABI/testing/sysfs-kernel-mm-memory-tiers
@@ -10,7 +10,7 @@ Description:	A collection of all the memory tiers allocated.
 
 
 What:		/sys/devices/virtual/memory_tiering/memory_tierN/
-		/sys/devices/virtual/memory_tiering/memory_tierN/nodes
+		/sys/devices/virtual/memory_tiering/memory_tierN/nodes_list
 Date:		August 2022
 Contact:	Linux memory management mailing list <linux-mm@...ck.org>
 Description:	Directory with details of a specific memory tier
@@ -21,5 +21,5 @@ Description:	Directory with details of a specific memory tier
 		A smaller value of N implies a higher (faster) memory tier in the
 		hierarchy.
 
-		nodes: NUMA nodes that are part of this memory tier.
+		nodes_list: NUMA nodes that are part of this memory tier.
 
diff --git a/mm/memory-tiers.c b/mm/memory-tiers.c
index f116b7b6333e..8dbfe9ec87d5 100644
--- a/mm/memory-tiers.c
+++ b/mm/memory-tiers.c
@@ -131,8 +131,8 @@ static void memory_tier_device_release(struct device *dev)
 	kfree(tier);
 }
 
-static ssize_t nodes_show(struct device *dev,
-			  struct device_attribute *attr, char *buf)
+static ssize_t nodes_list_show(struct device *dev,
+			       struct device_attribute *attr, char *buf)
 {
 	int ret;
 	nodemask_t nmask;
@@ -143,10 +143,10 @@ static ssize_t nodes_show(struct device *dev,
 	mutex_unlock(&memory_tier_lock);
 	return ret;
 }
-static DEVICE_ATTR_RO(nodes);
+static DEVICE_ATTR_RO(nodes_list);
 
 static struct attribute *memtier_dev_attrs[] = {
-	&dev_attr_nodes.attr,
+	&dev_attr_nodes_list.attr,
 	NULL
 };
 
-- 
2.35.1