On 24.09.25 20:40, Donet Tom wrote:
register_one_node() and register_node() are small functions.
This patch merges them into a single function named register_node()
to improve code readability.

No functional changes are introduced.

Signed-off-by: Donet Tom <[email protected]>
---

[...]

  /**
   * unregister_node - unregister a node device
   * @node: node going away
@@ -869,7 +842,13 @@ void register_memory_blocks_under_node_hotplug(int nid, 
unsigned long start_pfn,
  }
  #endif /* CONFIG_MEMORY_HOTPLUG */
-int register_one_node(int nid)
+/*

We can directly convert this to proper kernel doc by using /**

+ * register_node - Setup a sysfs device for a node.
+ * @nid - Node number to use when creating the device.
+ *
+ * Initialize and register the node device.

and briefly describing what the return value means

"Returns 0 on success, ..."

+ */
+int register_node(int nid)
  {
        int error;
        int cpu;
@@ -880,14 +859,23 @@ int register_one_node(int nid)
                return -ENOMEM;
INIT_LIST_HEAD(&node->access_list);
-       node_devices[nid] = node;
- error = register_node(node_devices[nid], nid);
+       node->dev.id = nid;
+       node->dev.bus = &node_subsys;
+       node->dev.release = node_device_release;
+       node->dev.groups = node_dev_groups;
+
+       error = device_register(&node->dev);
        if (error) {
-               node_devices[nid] = NULL;

Wondering why we did have this temporary setting of the node_devices[] in there. But I cannot immediately spot why it was required.

--
Cheers

David / dhildenb


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