diff options
| author | Ganapatrao Kulkarni <gkulkarni@caviumnetworks.com> | 2016-04-09 00:50:27 +0200 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2016-04-15 19:06:09 +0200 |
| commit | 1a2db300348b799479d2d22b84d51b27ad0458c7 (patch) | |
| tree | c9e3329f00575143dae72e14725b9e48161e34d7 /arch/arm64/kernel | |
| parent | arm64: Move unflatten_device_tree() call earlier. (diff) | |
| download | linux-1a2db300348b799479d2d22b84d51b27ad0458c7.tar.xz linux-1a2db300348b799479d2d22b84d51b27ad0458c7.zip | |
arm64, numa: Add NUMA support for arm64 platforms.
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>
Diffstat (limited to 'arch/arm64/kernel')
| -rw-r--r-- | arch/arm64/kernel/pci.c | 10 | ||||
| -rw-r--r-- | arch/arm64/kernel/setup.c | 4 | ||||
| -rw-r--r-- | arch/arm64/kernel/smp.c | 4 |
3 files changed, 18 insertions, 0 deletions
diff --git a/arch/arm64/kernel/pci.c b/arch/arm64/kernel/pci.c index c72de668e1d4..3c4e308b40a0 100644 --- a/arch/arm64/kernel/pci.c +++ b/arch/arm64/kernel/pci.c @@ -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) diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c index 432bc7f1dc45..65f515949baa 100644 --- a/arch/arm64/kernel/setup.c +++ b/arch/arm64/kernel/setup.c @@ -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; diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c index 5fbab1c40424..622bd6cd86e4 100644 --- a/arch/arm64/kernel/smp.c +++ b/arch/arm64/kernel/smp.c @@ -45,6 +45,7 @@ #include <asm/cputype.h> #include <asm/cpu_ops.h> #include <asm/mmu_context.h> +#include <asm/numa.h> #include <asm/pgtable.h> #include <asm/pgalloc.h> #include <asm/processor.h> @@ -203,6 +204,7 @@ int __cpu_up(unsigned int cpu, struct task_struct *idle) static void smp_store_cpu_info(unsigned int cpuid) { store_cpu_topology(cpuid); + numa_store_cpu_info(cpuid); } /* @@ -633,6 +635,8 @@ static void __init of_parse_and_init_cpus(void) pr_debug("cpu logical map 0x%llx\n", hwid); cpu_logical_map(cpu_count) = hwid; + + early_map_cpu_to_node(cpu_count, of_node_to_nid(dn)); next: cpu_count++; } |