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arm64, numa: Add NUMA support for arm64 platforms.

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Attempt to get the memory and CPU NUMA node via of_numa.  If that
fails, default the dummy NUMA node and map all memory and CPUs to node
0.

Tested-by: Shannon Zhao <shannon.zhao@linaro.org>
Reviewed-by: Robert Richter <rrichter@cavium.com>
Signed-off-by: Ganapatrao Kulkarni <gkulkarni@caviumnetworks.com>
Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Ganapatrao Kulkarni
2016-04-08 15:50:27 -07:00
committed by Will Deacon
parent 3194ac6e66
commit 1a2db30034
10 changed files with 538 additions and 5 deletions
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4
arch/arm64/kernel/setup.c
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@@ -53,6 +53,7 @@
#include <asm/cpufeature.h>
#include <asm/cpu_ops.h>
#include <asm/kasan.h>
#include <asm/numa.h>
#include <asm/sections.h>
#include <asm/setup.h>
#include <asm/smp_plat.h>
@@ -319,6 +320,9 @@ static int __init topology_init(void)
{
int i;
for_each_online_node(i)
register_one_node(i);
for_each_possible_cpu(i) {
struct cpu *cpu = &per_cpu(cpu_data.cpu, i);
cpu->hotpluggable = 1;