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mm: page_alloc: move set_zone_contiguous() into mm_init.c

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set_zone_contiguous() is only used in mm init/hotplug, and
clear_zone_contiguous() only used in hotplug, move them from page_alloc.c
to the more appropriate file.

Link: https://lkml.kernel.org/r/20230516063821.121844-4-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Iurii Zaikin <yzaikin@google.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Len Brown <len.brown@intel.com>
Cc: Luis Chamberlain <mcgrof@kernel.org>
Cc: Mike Rapoport (IBM) <rppt@kernel.org>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Rafael J. Wysocki <rafael@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Kefeng Wang 2023-05-16 14:38:11 +08:00 committed by Andrew Morton
parent 5e7d5da2f4
commit 904d58578f
4 changed files with 29 additions and 30 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

3
include/linux/memory_hotplug.h
View file

@ -326,9 +326,6 @@ static inline int remove_memory(u64 start, u64 size)
static inline void __remove_memory(u64 start, u64 size) {} static inline void __remove_memory(u64 start, u64 size) {}
#endif /* CONFIG_MEMORY_HOTREMOVE */ #endif /* CONFIG_MEMORY_HOTREMOVE */
extern void set_zone_contiguous(struct zone *zone);
extern void clear_zone_contiguous(struct zone *zone);
#ifdef CONFIG_MEMORY_HOTPLUG #ifdef CONFIG_MEMORY_HOTPLUG
extern void __ref free_area_init_core_hotplug(struct pglist_data *pgdat); extern void __ref free_area_init_core_hotplug(struct pglist_data *pgdat);
extern int __add_memory(int nid, u64 start, u64 size, mhp_t mhp_flags); extern int __add_memory(int nid, u64 start, u64 size, mhp_t mhp_flags);

7
mm/internal.h
View file

@ -371,6 +371,13 @@ static inline struct page *pageblock_pfn_to_page(unsigned long start_pfn,
return __pageblock_pfn_to_page(start_pfn, end_pfn, zone); return __pageblock_pfn_to_page(start_pfn, end_pfn, zone);
} }
void set_zone_contiguous(struct zone *zone);
static inline void clear_zone_contiguous(struct zone *zone)
{
zone->contiguous = false;
}
extern int __isolate_free_page(struct page *page, unsigned int order); extern int __isolate_free_page(struct page *page, unsigned int order);
extern void __putback_isolated_page(struct page *page, unsigned int order, extern void __putback_isolated_page(struct page *page, unsigned int order,
int mt); int mt);

22
mm/mm_init.c
View file

@ -2330,6 +2330,28 @@ void __init init_cma_reserved_pageblock(struct page *page)
} }
#endif #endif
void set_zone_contiguous(struct zone *zone)
{
unsigned long block_start_pfn = zone->zone_start_pfn;
unsigned long block_end_pfn;
block_end_pfn = pageblock_end_pfn(block_start_pfn);
for (; block_start_pfn < zone_end_pfn(zone);
block_start_pfn = block_end_pfn,
block_end_pfn += pageblock_nr_pages) {
block_end_pfn = min(block_end_pfn, zone_end_pfn(zone));
if (!__pageblock_pfn_to_page(block_start_pfn,
block_end_pfn, zone))
return;
cond_resched();
}
/* We confirm that there is no hole */
zone->contiguous = true;
}
void __init page_alloc_init_late(void) void __init page_alloc_init_late(void)
{ {
struct zone *zone; struct zone *zone;

27
mm/page_alloc.c
View file

@ -1532,33 +1532,6 @@ struct page *__pageblock_pfn_to_page(unsigned long start_pfn,
return start_page; return start_page;
} }
void set_zone_contiguous(struct zone *zone)
{
unsigned long block_start_pfn = zone->zone_start_pfn;
unsigned long block_end_pfn;
block_end_pfn = pageblock_end_pfn(block_start_pfn);
for (; block_start_pfn < zone_end_pfn(zone);
block_start_pfn = block_end_pfn,
block_end_pfn += pageblock_nr_pages) {
block_end_pfn = min(block_end_pfn, zone_end_pfn(zone));
if (!__pageblock_pfn_to_page(block_start_pfn,
block_end_pfn, zone))
return;
cond_resched();
}
/* We confirm that there is no hole */
zone->contiguous = true;
}
void clear_zone_contiguous(struct zone *zone)
{
zone->contiguous = false;
}
/* /*
* The order of subdivision here is critical for the IO subsystem. * The order of subdivision here is critical for the IO subsystem.
* Please do not alter this order without good reasons and regression * Please do not alter this order without good reasons and regression