From: "Mike Rapoport (Microsoft)" <rppt@kernel.org>

Move calculations of zone limits to a dedicated arch_zone_limits_init()
function.

Later MM core will use this function as an architecture specific callback
during nodes and zones initialization and thus there won't be a need to
call free_area_init() from every architecture.

Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
---
 arch/csky/kernel/setup.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/arch/csky/kernel/setup.c b/arch/csky/kernel/setup.c
index e0d6ca86ea8c..8968815d93e6 100644
--- a/arch/csky/kernel/setup.c
+++ b/arch/csky/kernel/setup.c

@@ -51,6 +51,14 @@ static void __init setup_initrd(void)
 }
 #endif

+void __init arch_zone_limits_init(unsigned long *max_zone_pfns)
+{
+       max_zone_pfns[ZONE_NORMAL] = max_low_pfn;
+#ifdef CONFIG_HIGHMEM
+       max_zone_pfns[ZONE_HIGHMEM] = max_pfn;
+#endif
+}
+

 static void __init csky_memblock_init(void)
 {
        unsigned long lowmem_size = PFN_DOWN(LOWMEM_LIMIT - PHYS_OFFSET_OFFSET);

@@ -83,12 +91,9 @@ static void __init csky_memblock_init(void)
        setup_initrd();
 #endif

-       max_zone_pfn[ZONE_NORMAL] = max_low_pfn;
-
        mmu_init(min_low_pfn, max_low_pfn);

 #ifdef CONFIG_HIGHMEM
-       max_zone_pfn[ZONE_HIGHMEM] = max_pfn;

        highstart_pfn = max_low_pfn;
        highend_pfn   = max_pfn;

@@ -97,6 +102,7 @@ static void __init csky_memblock_init(void)

        dma_contiguous_reserve(0);

+       arch_zone_limits_init(max_zone_pfn);
        free_area_init(max_zone_pfn);
 }

--

2.51.0