mm: kill find_min_pfn_with_active_regions()

find_min_pfn_with_active_regions() is only called from free_area_init(). Open-code the PHYS_PFN(memblock_start_of_DRAM()) into free_area_init(), and kill find_min_pfn_with_active_regions(). Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Kefeng Wang <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
josf · Sep 12, 2022 · fb70c48 · fb70c48
1 parent 0192445
commit fb70c48
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Showing 2 changed files with 1 addition and 13 deletions.
diff --git a/include/linux/mm.h b/include/linux/mm.h
@@ -2520,7 +2520,6 @@ extern unsigned long absent_pages_in_range(unsigned long start_pfn,
 						unsigned long end_pfn);
 extern void get_pfn_range_for_nid(unsigned int nid,
 			unsigned long *start_pfn, unsigned long *end_pfn);
-extern unsigned long find_min_pfn_with_active_regions(void);
 
 #ifndef CONFIG_NUMA
 static inline int early_pfn_to_nid(unsigned long pfn)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
@@ -7908,17 +7908,6 @@ unsigned long __init node_map_pfn_alignment(void)
 	return ~accl_mask + 1;
 }
 
-/**
- * find_min_pfn_with_active_regions - Find the minimum PFN registered
- *
- * Return: the minimum PFN based on information provided via
- * memblock_set_node().
- */
-unsigned long __init find_min_pfn_with_active_regions(void)
-{
-	return PHYS_PFN(memblock_start_of_DRAM());
-}
-
 /*
  * early_calculate_totalpages()
  * Sum pages in active regions for movable zone.
@@ -8211,7 +8200,7 @@ void __init free_area_init(unsigned long *max_zone_pfn)
 	memset(arch_zone_highest_possible_pfn, 0,
 				sizeof(arch_zone_highest_possible_pfn));
 
-	start_pfn = find_min_pfn_with_active_regions();
+	start_pfn = PHYS_PFN(memblock_start_of_DRAM());
 	descending = arch_has_descending_max_zone_pfns();
 
 	for (i = 0; i < MAX_NR_ZONES; i++) {