Re: [PATCH 5/5] kernel handling of CPU DLPAR

+static ssize_t cpu_probe_store(struct class *class, const char *buf,
+                   size_t count)
+{
+    struct device_node *dn;
+    u32 drc_index;
+    char *cpu_name;
+    int rc;
+
+    drc_index = simple_strtoull(buf, NULL, 0);

+    if (!drc_index)
+        return -EINVAL;
+
+    rc = acquire_drc(drc_index);
+    if (rc)
+        return rc;
+
+    dn = configure_connector(drc_index);
+    if (!dn) {
+        release_drc(drc_index);
+        return rc;
+    }
+
+    /* fixup dn name */
+    cpu_name = kzalloc(strlen(dn->full_name) + strlen("/cpus/") + 1,
+               GFP_KERNEL);
+    sprintf(cpu_name, "/cpus/%s", dn->full_name);
+    kfree(dn->full_name);
+    dn->full_name = cpu_name;
+
+    rc = add_device_tree_nodes(dn);
+    if (rc)
+        release_drc(drc_index);
+
+    return rc ? rc : count;
+}
+