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mm: kill find_min_pfn_with_active_regions()

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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/20220815111017.39341-1-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Kefeng Wang 2022-08-15 19:10:17 +08:00 committed by Andrew Morton
parent 0192445cb2
commit fb70c4878d
2 changed files with 1 additions and 13 deletions
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1
include/linux/mm.h
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@ -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)

13
mm/page_alloc.c
View File

@ -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++) {