[PATCH 12/28] openrisc: introduce arch_zone_limits_init()

[Mike Rapoport]

From: "Mike Rapoport (Microsoft)" <rppt@xxxxxxxxxx>

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@xxxxxxxxxx>
---
 arch/openrisc/mm/init.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/arch/openrisc/mm/init.c b/arch/openrisc/mm/init.c
index 9382d9a0ec78..67de93e7a685 100644
--- a/arch/openrisc/mm/init.c
+++ b/arch/openrisc/mm/init.c
@@ -39,15 +39,19 @@
 
 int mem_init_done;
 
-static void __init zone_sizes_init(void)
+void __init arch_zone_limits_init(unsigned long *max_zone_pfns)
 {
-	unsigned long max_zone_pfn[MAX_NR_ZONES] = { 0 };
-
 	/*
 	 * We use only ZONE_NORMAL
 	 */
-	max_zone_pfn[ZONE_NORMAL] = max_low_pfn;
+	max_zone_pfns[ZONE_NORMAL] = max_low_pfn;
+}
+
+static void __init zone_sizes_init(void)
+{
+	unsigned long max_zone_pfn[MAX_NR_ZONES] = { 0 };
 
+	arch_zone_limits_init(max_zone_pfn);
 	free_area_init(max_zone_pfn);
 }
 
-- 
2.51.0