ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/arch/ia64/kernel/numa.c b/marvell/linux/arch/ia64/kernel/numa.c
new file mode 100644
index 0000000..8a959f2
--- /dev/null
+++ b/marvell/linux/arch/ia64/kernel/numa.c
@@ -0,0 +1,73 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *
+ * ia64 kernel NUMA specific stuff
+ *
+ * Copyright (C) 2002 Erich Focht <efocht@ess.nec.de>
+ * Copyright (C) 2004 Silicon Graphics, Inc.
+ * Jesse Barnes <jbarnes@sgi.com>
+ */
+#include <linux/topology.h>
+#include <linux/module.h>
+#include <asm/processor.h>
+#include <asm/smp.h>
+
+u16 cpu_to_node_map[NR_CPUS] __cacheline_aligned;
+EXPORT_SYMBOL(cpu_to_node_map);
+
+cpumask_t node_to_cpu_mask[MAX_NUMNODES] __cacheline_aligned;
+EXPORT_SYMBOL(node_to_cpu_mask);
+
+void map_cpu_to_node(int cpu, int nid)
+{
+ int oldnid;
+ if (nid < 0) { /* just initialize by zero */
+ cpu_to_node_map[cpu] = 0;
+ return;
+ }
+ /* sanity check first */
+ oldnid = cpu_to_node_map[cpu];
+ if (cpumask_test_cpu(cpu, &node_to_cpu_mask[oldnid])) {
+ return; /* nothing to do */
+ }
+ /* we don't have cpu-driven node hot add yet...
+ In usual case, node is created from SRAT at boot time. */
+ if (!node_online(nid))
+ nid = first_online_node;
+ cpu_to_node_map[cpu] = nid;
+ cpumask_set_cpu(cpu, &node_to_cpu_mask[nid]);
+ return;
+}
+
+void unmap_cpu_from_node(int cpu, int nid)
+{
+ WARN_ON(!cpumask_test_cpu(cpu, &node_to_cpu_mask[nid]));
+ WARN_ON(cpu_to_node_map[cpu] != nid);
+ cpu_to_node_map[cpu] = 0;
+ cpumask_clear_cpu(cpu, &node_to_cpu_mask[nid]);
+}
+
+
+/**
+ * build_cpu_to_node_map - setup cpu to node and node to cpumask arrays
+ *
+ * Build cpu to node mapping and initialize the per node cpu masks using
+ * info from the node_cpuid array handed to us by ACPI.
+ */
+void __init build_cpu_to_node_map(void)
+{
+ int cpu, i, node;
+
+ for(node=0; node < MAX_NUMNODES; node++)
+ cpumask_clear(&node_to_cpu_mask[node]);
+
+ for_each_possible_early_cpu(cpu) {
+ node = NUMA_NO_NODE;
+ for (i = 0; i < NR_CPUS; ++i)
+ if (cpu_physical_id(cpu) == node_cpuid[i].phys_id) {
+ node = node_cpuid[i].nid;
+ break;
+ }
+ map_cpu_to_node(cpu, node);
+ }
+}