On 08/07/2013 07:33 AM, Toshi Kani wrote:
On Fri, 2013-08-02 at 17:14 +0800, Tang Chen wrote:
This patch introduce early_acpi_firmware_srat() to find the
phys addr of SRAT provided by firmware. And call it in
find_hotpluggable_memory().
Since we have initialized acpi_gbl_root_table_list earlier,
and store all the tables' phys addrs and signatures in it,
it is easy to find the SRAT.
Signed-off-by: Tang Chen<tangchen@xxxxxxxxxxxxxx>
Reviewed-by: Zhang Yanfei<zhangyanfei@xxxxxxxxxxxxxx>
---
drivers/acpi/acpica/tbxface.c | 32 ++++++++++++++++++++++++++++++++
drivers/acpi/osl.c | 22 ++++++++++++++++++++++
include/acpi/acpixf.h | 4 ++++
include/linux/acpi.h | 4 ++++
mm/memory_hotplug.c | 8 ++++++--
5 files changed, 68 insertions(+), 2 deletions(-)
diff --git a/drivers/acpi/acpica/tbxface.c b/drivers/acpi/acpica/tbxface.c
Please add "ACPICA" to the patch title. This patch also needs to be
reviewed by ACPICA folks.
OK, followed.
index ad11162..6a92f12 100644
--- a/drivers/acpi/acpica/tbxface.c
+++ b/drivers/acpi/acpica/tbxface.c
:
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index dcbca3e..ec490fe 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -53,6 +53,7 @@
#include<acpi/acpi.h>
#include<acpi/acpi_bus.h>
#include<acpi/processor.h>
+#include<acpi/acpixf.h>
#define _COMPONENT ACPI_OS_SERVICES
ACPI_MODULE_NAME("osl");
@@ -760,6 +761,27 @@ void __init acpi_initrd_override(void *data, size_t size)
}
#endif /* CONFIG_ACPI_INITRD_TABLE_OVERRIDE */
+#ifdef CONFIG_ACPI_NUMA
+/*******************************************************************************
+ *
+ * FUNCTION: early_acpi_firmware_srat
+ *
+ * RETURN: Phys addr of SRAT on success, 0 on error.
+ *
+ * DESCRIPTION: Get the phys addr of SRAT provided by firmware.
+ *
+ ******************************************************************************/
+phys_addr_t __init early_acpi_firmware_srat(void)
+{
+ struct acpi_table_desc table_desc;
+
+ if (acpi_get_table_desc(ACPI_SIG_SRAT,&table_desc))
This check should use ACPI_FAILURE() macro:
if (ACPI_FAILURE(acpi_get_table_desc(ACPI_SIG_SRAT,&table_desc))
OK, will change it.
Thanks.
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