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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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10
arch/arm64/kernel/pci.c
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@@ -74,6 +74,16 @@ int raw_pci_write(unsigned int domain, unsigned int bus,
return -ENXIO;
}
#ifdef CONFIG_NUMA
int pcibus_to_node(struct pci_bus *bus)
{
return dev_to_node(&bus->dev);
}
EXPORT_SYMBOL(pcibus_to_node);
#endif
#ifdef CONFIG_ACPI
/* Root bridge scanning */
struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root)