target/linux/bcm27xx/patches-5.4/950-0440-arm64-mm-use-arm64_dma_phys_limit-instead-of-calling.patch

   1 From c17f622cbb33332a305ef383506740d3d01aa831 Mon Sep 17 00:00:00 2001
   2 From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
   3 Date: Wed, 11 Sep 2019 20:25:43 +0200
   4 Subject: [PATCH] arm64: mm: use arm64_dma_phys_limit instead of
   5  calling max_zone_dma_phys()
   6
   7 commit ae970dc096b2d39f65f2e18d142e3978dc9ee1c7 upstream.
   8
   9 By the time we call zones_sizes_init() arm64_dma_phys_limit already
  10 contains the result of max_zone_dma_phys(). We use the variable instead
  11 of calling the function directly to save some precious cpu time.
  12
  13 Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
  14 Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
  15 Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
  16 ---
  17  arch/arm64/mm/init.c | 2 +-
  18  1 file changed, 1 insertion(+), 1 deletion(-)
  19
  20 --- a/arch/arm64/mm/init.c
  21 +++ b/arch/arm64/mm/init.c
  22 @@ -181,7 +181,7 @@ static void __init zone_sizes_init(unsig
  23         unsigned long max_zone_pfns[MAX_NR_ZONES]  = {0};
  24
  25  #ifdef CONFIG_ZONE_DMA32
  26 -       max_zone_pfns[ZONE_DMA32] = PFN_DOWN(max_zone_dma_phys());
  27 +       max_zone_pfns[ZONE_DMA32] = PFN_DOWN(arm64_dma_phys_limit);
  28  #endif
  29         max_zone_pfns[ZONE_NORMAL] = max;
  30