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arm64: mm: use arm64_dma_phys_limit instead of calling max_zone_dma_phys()

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By the time we call zones_sizes_init() arm64_dma_phys_limit already
contains the result of max_zone_dma_phys(). We use the variable instead
of calling the function directly to save some precious cpu time.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Nicolas Saenz Julienne 2019-09-11 20:25:43 +02:00 committed by Catalin Marinas
parent 4f5cafb5cb
commit ae970dc096
1 changed files with 1 additions and 1 deletions
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2
arch/arm64/mm/init.c
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@ -187,7 +187,7 @@ static void __init zone_sizes_init(unsigned long min, unsigned long max)
unsigned long max_zone_pfns[MAX_NR_ZONES] = {0};
#ifdef CONFIG_ZONE_DMA32
max_zone_pfns[ZONE_DMA32] = PFN_DOWN(max_zone_dma_phys());
max_zone_pfns[ZONE_DMA32] = PFN_DOWN(arm64_dma_phys_limit);
#endif
max_zone_pfns[ZONE_NORMAL] = max;