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-rw-r--r--include/acpi/acpi_numa.h42
1 files changed, 42 insertions, 0 deletions
diff --git a/include/acpi/acpi_numa.h b/include/acpi/acpi_numa.h
new file mode 100644
index 000000000..a4c6ef809
--- /dev/null
+++ b/include/acpi/acpi_numa.h
@@ -0,0 +1,42 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ACPI_NUMA_H
+#define __ACPI_NUMA_H
+
+#ifdef CONFIG_ACPI_NUMA
+#include <linux/kernel.h>
+#include <linux/numa.h>
+
+/* Proximity bitmap length */
+#if MAX_NUMNODES > 256
+#define MAX_PXM_DOMAINS MAX_NUMNODES
+#else
+#define MAX_PXM_DOMAINS (256) /* Old pxm spec is defined 8 bit */
+#endif
+
+extern int pxm_to_node(int);
+extern int node_to_pxm(int);
+extern int acpi_map_pxm_to_node(int);
+extern unsigned char acpi_srat_revision;
+extern void disable_srat(void);
+
+extern void bad_srat(void);
+extern int srat_disabled(void);
+
+#else /* CONFIG_ACPI_NUMA */
+static inline void disable_srat(void)
+{
+}
+static inline int pxm_to_node(int pxm)
+{
+ return 0;
+}
+#endif /* CONFIG_ACPI_NUMA */
+
+#ifdef CONFIG_ACPI_HMAT
+extern void disable_hmat(void);
+#else /* CONFIG_ACPI_HMAT */
+static inline void disable_hmat(void)
+{
+}
+#endif /* CONFIG_ACPI_HMAT */
+#endif /* __ACP_NUMA_H */