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-rw-r--r--arch/s390/kernel/numa.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/arch/s390/kernel/numa.c b/arch/s390/kernel/numa.c
new file mode 100644
index 000000000..23ab9f02f
--- /dev/null
+++ b/arch/s390/kernel/numa.c
@@ -0,0 +1,35 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * NUMA support for s390
+ *
+ * Implement NUMA core code.
+ *
+ * Copyright IBM Corp. 2015
+ */
+
+#include <linux/kernel.h>
+#include <linux/mmzone.h>
+#include <linux/cpumask.h>
+#include <linux/memblock.h>
+#include <linux/node.h>
+#include <asm/numa.h>
+
+struct pglist_data *node_data[MAX_NUMNODES];
+EXPORT_SYMBOL(node_data);
+
+void __init numa_setup(void)
+{
+ int nid;
+
+ nodes_clear(node_possible_map);
+ node_set(0, node_possible_map);
+ node_set_online(0);
+ for (nid = 0; nid < MAX_NUMNODES; nid++) {
+ NODE_DATA(nid) = memblock_alloc(sizeof(pg_data_t), 8);
+ if (!NODE_DATA(nid))
+ panic("%s: Failed to allocate %zu bytes align=0x%x\n",
+ __func__, sizeof(pg_data_t), 8);
+ }
+ NODE_DATA(0)->node_spanned_pages = memblock_end_of_DRAM() >> PAGE_SHIFT;
+ NODE_DATA(0)->node_id = 0;
+}