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arm64, ACPI, NUMA: NUMA support based on SRAT and SLIT

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Introduce a new file to hold ACPI based NUMA information parsing from
SRAT and SLIT.

SRAT includes the CPU ACPI ID to Proximity Domain mappings and memory
ranges to Proximity Domain mapping.  SLIT has the information of inter
node distances(relative number for access latency).

Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: Ganapatrao Kulkarni <gkulkarni@caviumnetworks.com>
[rrichter@cavium.com Reworked for numa v10 series ]
Signed-off-by: Robert Richter <rrichter@cavium.com>
[david.daney@cavium.com reorderd and combinded with other patches in
Hanjun Guo's original set, removed get_mpidr_in_madt() and use
acpi_map_madt_entry() instead.]
Signed-off-by: David Daney <david.daney@cavium.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Dennis Chen <dennis.chen@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Hanjun Guo
2016-05-24 15:35:44 -07:00
committed by Rafael J. Wysocki
parent fb7c2bae8a
commit d8b47fca8c
6 changed files with 129 additions and 1 deletions
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5
arch/arm64/mm/numa.c
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@@ -17,6 +17,7 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/acpi.h>
#include <linux/bootmem.h>
#include <linux/memblock.h>
#include <linux/module.h>
@@ -391,7 +392,9 @@ static int __init dummy_numa_init(void)
void __init arm64_numa_init(void)
{
if (!numa_off) {
if (!numa_init(of_numa_init))
if (!acpi_disabled && !numa_init(arm64_acpi_numa_init))
return;
if (acpi_disabled && !numa_init(of_numa_init))
return;
}