acpi_get_node() allows ACPI kernel modules to map a proximity ID
to a node ID from ACPI _PXM method. Some ACPI static tables,
such as SRAT, DMAR, PMTT and NFIT, also contain proximity IDs.
This patch exports acpi_map_pxm_to_node() so that ACPI kernel
modules can call this function to map a proximity ID to a node ID
from an ACPI static table as well.
When CONFIG_ACPI_NUMA is not set, acpi_map_pxm_to_node() always
returns 0.
Signed-off-by: Toshi Kani <toshi.kani@xxxxxx>
---
drivers/acpi/numa.c | 1 +
include/linux/acpi.h | 5 +++++
2 files changed, 6 insertions(+)
diff --git a/drivers/acpi/numa.c b/drivers/acpi/numa.c
index 4898082..8f50d5d 100644
--- a/drivers/acpi/numa.c
+++ b/drivers/acpi/numa.c
@@ -90,6 +90,7 @@ int acpi_map_pxm_to_node(int pxm)
return node;
}
+EXPORT_SYMBOL(acpi_map_pxm_to_node);
static void __init
acpi_table_print_srat_entry(struct acpi_subtable_header *header)
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index e4da5e3..7a76e51 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -289,8 +289,13 @@ extern void acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d);
extern void acpi_osi_setup(char *str);
#ifdef CONFIG_ACPI_NUMA
+int acpi_map_pxm_to_node(int pxm);
int acpi_get_node(acpi_handle handle);
#else
+static inline int acpi_map_pxm_to_node(int pxm)
+{
+ return 0;
+}
static inline int acpi_get_node(acpi_handle handle)
{
return 0;
--
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