[PATCH v3 1/4] mm: rename memmap_init() and memmap_init_zone()

Baoquan He
2021-01-05T07:49:06Z

The current memmap_init_zone() only handles memory region inside one zone,
actually memmap_init() does the memmap init of one zone. So rename both of
them accordingly.

And also rename the function parameter 'range_start_pfn' and local variable
'range_end_pfn' of memmap_init() to zone_start_pfn/zone_end_pfn.

Signed-off-by: Baoquan He <bhe@redhat.com>
Reviewed-by: Mike Rapoport <rppt@linux.ibm.com>
---
arch/ia64/include/asm/pgtable.h | 2 +-
arch/ia64/mm/init.c | 6 +++---
include/linux/mm.h | 2 +-
mm/memory_hotplug.c | 2 +-
mm/page_alloc.c | 24 ++++++++++++------------
5 files changed, 18 insertions(+), 18 deletions(-)

diff --git a/arch/ia64/include/asm/pgtable.h b/arch/ia64/include/asm/pgtable.h
index 779b6972aa84..dce2ff37df65 100644
--- a/arch/ia64/include/asm/pgtable.h
+++ b/arch/ia64/include/asm/pgtable.h
@@ -520,7 +520,7 @@ extern struct page *zero_page_memmap_ptr;

# ifdef CONFIG_VIRTUAL_MEM_MAP
/* arch mem_map init routine is needed due to holes in a virtual mem_map */
- extern void memmap_init (unsigned long size, int nid, unsigned long zone,
+ extern void memmap_init_zone(unsigned long size, int nid, unsigned long zone,
unsigned long start_pfn);
# endif /* CONFIG_VIRTUAL_MEM_MAP */
# endif /* !__ASSEMBLY__ */
diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index e76386a3479e..c8e68e92beb3 100644
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -535,18 +535,18 @@ virtual_memmap_init(u64 start, u64 end, void *arg)
/ sizeof(struct page));

if (map_start < map_end)
- memmap_init_zone((unsigned long)(map_end - map_start),
+ memmap_init_range((unsigned long)(map_end - map_start),
args->nid, args->zone, page_to_pfn(map_start), page_to_pfn(map_end),
MEMINIT_EARLY, NULL, MIGRATE_MOVABLE);
return 0;
}

void __meminit
-memmap_init (unsigned long size, int nid, unsigned long zone,
+memmap_init_zone(unsigned long size, int nid, unsigned long zone,
unsigned long start_pfn)
{
if (!vmem_map) {
- memmap_init_zone(size, nid, zone, start_pfn, start_pfn + size,
+ memmap_init_range(size, nid, zone, start_pfn, start_pfn + size,
MEMINIT_EARLY, NULL, MIGRATE_MOVABLE);
} else {
struct page *start;
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 6b3de3c09cd5..26c01f5a028b 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -2439,7 +2439,7 @@ extern int __meminit early_pfn_to_nid(unsigned long pfn);
#endif

extern void set_dma_reserve(unsigned long new_dma_reserve);
-extern void memmap_init_zone(unsigned long, int, unsigned long,
+extern void memmap_init_range(unsigned long, int, unsigned long,
unsigned long, unsigned long, enum meminit_context,
struct vmem_altmap *, int migratetype);
extern void setup_per_zone_wmarks(void);
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index f9d57b9be8c7..ddcb1cd24c60 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -713,7 +713,7 @@ void __ref move_pfn_range_to_zone(struct zone *zone, unsigned long start_pfn,
* expects the zone spans the pfn range. All the pages in the range
* are reserved so nobody should be touching them so we should be safe
*/
- memmap_init_zone(nr_pages, nid, zone_idx(zone), start_pfn, 0,
+ memmap_init_range(nr_pages, nid, zone_idx(zone), start_pfn, 0,
MEMINIT_HOTPLUG, altmap, migratetype);

set_zone_contiguous(zone);
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 3ea9d5cd6058..69ebf75be91c 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -6117,7 +6117,7 @@ overlap_memmap_init(unsigned long zone, unsigned long *pfn)
* (usually MIGRATE_MOVABLE). Besides setting the migratetype, no related
* zone stats (e.g., nr_isolate_pageblock) are touched.
*/
-void __meminit memmap_init_zone(unsigned long size, int nid, unsigned long zone,
+void __meminit memmap_init_range(unsigned long size, int nid, unsigned long zone,
unsigned long start_pfn, unsigned long zone_end_pfn,
enum meminit_context context,
struct vmem_altmap *altmap, int migratetype)
@@ -6292,24 +6292,24 @@ static inline u64 init_unavailable_range(unsigned long spfn, unsigned long epfn,
}
#endif

-void __init __weak memmap_init(unsigned long size, int nid,
+void __init __weak memmap_init_zone(unsigned long size, int nid,
unsigned long zone,
- unsigned long range_start_pfn)
+ unsigned long zone_start_pfn)
{
unsigned long start_pfn, end_pfn, hole_start_pfn = 0;
- unsigned long range_end_pfn = range_start_pfn + size;
+ unsigned long zone_end_pfn = zone_start_pfn + size;
u64 pgcnt = 0;
int i;

for_each_mem_pfn_range(i, nid, &start_pfn, &end_pfn, NULL) {
- start_pfn = clamp(start_pfn, range_start_pfn, range_end_pfn);
- end_pfn = clamp(end_pfn, range_start_pfn, range_end_pfn);
- hole_start_pfn = clamp(hole_start_pfn, range_start_pfn,
- range_end_pfn);
+ start_pfn = clamp(start_pfn, zone_start_pfn, zone_end_pfn);
+ end_pfn = clamp(end_pfn, zone_start_pfn, zone_end_pfn);
+ hole_start_pfn = clamp(hole_start_pfn, zone_start_pfn,
+ zone_end_pfn);

if (end_pfn > start_pfn) {
size = end_pfn - start_pfn;
- memmap_init_zone(size, nid, zone, start_pfn, range_end_pfn,
+ memmap_init_range(size, nid, zone, start_pfn, zone_end_pfn,
MEMINIT_EARLY, NULL, MIGRATE_MOVABLE);
}

@@ -6326,8 +6326,8 @@ void __init __weak memmap_init(unsigned long size, int nid,
* considered initialized. Make sure that memmap has a well defined
* state.
*/
- if (hole_start_pfn < range_end_pfn)
- pgcnt += init_unavailable_range(hole_start_pfn, range_end_pfn,
+ if (hole_start_pfn < zone_end_pfn)
+ pgcnt += init_unavailable_range(hole_start_pfn, zone_end_pfn,
zone, nid);

if (pgcnt)
@@ -7039,7 +7039,7 @@ static void __init free_area_init_core(struct pglist_data *pgdat)
set_pageblock_order();
setup_usemap(pgdat, zone, zone_start_pfn, size);
init_currently_empty_zone(zone, zone_start_pfn, size);
- memmap_init(size, nid, j, zone_start_pfn);
+ memmap_init_zone(size, nid, j, zone_start_pfn);
}
}

--
2.17.2