diff options
| author | Ganapatrao Kulkarni <gkulkarni@caviumnetworks.com> | 2016-04-09 01:50:27 +0300 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2016-04-15 20:06:09 +0300 |
| commit | 1a2db300348b799479d2d22b84d51b27ad0458c7 (patch) | |
| tree | c9e3329f00575143dae72e14725b9e48161e34d7 /arch/arm64/mm/init.c | |
| parent | 3194ac6e66cc7a00c1fa9fecf33a7c376b489497 (diff) | |
| download | linux-1a2db300348b799479d2d22b84d51b27ad0458c7.tar.xz | |
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/mm/init.c')
| -rw-r--r-- | arch/arm64/mm/init.c | 35 |
1 files changed, 30 insertions, 5 deletions
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c index d55d720dba79..f64dbd49eca3 100644 --- a/arch/arm64/mm/init.c +++ b/arch/arm64/mm/init.c @@ -40,6 +40,7 @@ #include <asm/kasan.h> #include <asm/kernel-pgtable.h> #include <asm/memory.h> +#include <asm/numa.h> #include <asm/sections.h> #include <asm/setup.h> #include <asm/sizes.h> @@ -86,6 +87,21 @@ static phys_addr_t __init max_zone_dma_phys(void) return min(offset + (1ULL << 32), memblock_end_of_DRAM()); } +#ifdef CONFIG_NUMA + +static void __init zone_sizes_init(unsigned long min, unsigned long max) +{ + unsigned long max_zone_pfns[MAX_NR_ZONES] = {0}; + + if (IS_ENABLED(CONFIG_ZONE_DMA)) + max_zone_pfns[ZONE_DMA] = PFN_DOWN(max_zone_dma_phys()); + max_zone_pfns[ZONE_NORMAL] = max; + + free_area_init_nodes(max_zone_pfns); +} + +#else + static void __init zone_sizes_init(unsigned long min, unsigned long max) { struct memblock_region *reg; @@ -126,6 +142,8 @@ static void __init zone_sizes_init(unsigned long min, unsigned long max) free_area_init_node(0, zone_size, min, zhole_size); } +#endif /* CONFIG_NUMA */ + #ifdef CONFIG_HAVE_ARCH_PFN_VALID int pfn_valid(unsigned long pfn) { @@ -142,10 +160,15 @@ static void __init arm64_memory_present(void) static void __init arm64_memory_present(void) { struct memblock_region *reg; + int nid = 0; - for_each_memblock(memory, reg) - memory_present(0, memblock_region_memory_base_pfn(reg), - memblock_region_memory_end_pfn(reg)); + for_each_memblock(memory, reg) { +#ifdef CONFIG_NUMA + nid = reg->nid; +#endif + memory_present(nid, memblock_region_memory_base_pfn(reg), + memblock_region_memory_end_pfn(reg)); + } } #endif @@ -278,7 +301,6 @@ void __init arm64_memblock_init(void) dma_contiguous_reserve(arm64_dma_phys_limit); memblock_allow_resize(); - memblock_dump_all(); } void __init bootmem_init(void) @@ -290,6 +312,9 @@ void __init bootmem_init(void) early_memtest(min << PAGE_SHIFT, max << PAGE_SHIFT); + max_pfn = max_low_pfn = max; + + arm64_numa_init(); /* * Sparsemem tries to allocate bootmem in memory_present(), so must be * done after the fixed reservations. @@ -300,7 +325,7 @@ void __init bootmem_init(void) zone_sizes_init(min, max); high_memory = __va((max << PAGE_SHIFT) - 1) + 1; - max_pfn = max_low_pfn = max; + memblock_dump_all(); } #ifndef CONFIG_SPARSEMEM_VMEMMAP |