linux-kernel - [PATCH 2/2] mm: rename memmap_init() and memmap_init

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Message-Id: <20201213150942.20990-3-bhe@redhat.com>
Date:   Sun, 13 Dec 2020 23:09:42 +0800
From:   Baoquan He <bhe@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     linux-mm@...ck.org, gopakumarr@...are.com,
        akpm@...ux-foundation.org, rppt@...nel.org,
        natechancellor@...il.com, ndesaulniers@...gle.com,
        clang-built-linux@...glegroups.com, rostedt@...dmis.org,
        manir@...are.com, lauyiuch@...are.com, pjonasson@...are.com,
        rajaramv@...are.com
Subject: [PATCH 2/2] mm: rename memmap_init() and memmap_init_zone()

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' to zone_start_pfn/zone_end_pfn.

Signed-off-by: Baoquan He <bhe@...hat.com>
---
 arch/ia64/mm/init.c |  6 +++---
 include/linux/mm.h  |  2 +-
 mm/memory_hotplug.c |  2 +-
 mm/page_alloc.c     | 16 ++++++++--------
 4 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index 27ca549ff47e..af678197ac2d 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 cd5c313729ea..3d81ebbbef89 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 47b75da63f01..579762e4f8d8 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -714,7 +714,7 @@ 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 315c22974f0d..fac599deba56 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -6050,7 +6050,7 @@ 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)
@@ -6187,21 +6187,21 @@ static void __meminit zone_init_free_lists(struct zone *zone)
 	}
 }
 
-void __meminit __weak memmap_init(unsigned long size, int nid,
+void __meminit __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;
-	unsigned long range_end_pfn = range_start_pfn + size;
+	unsigned long zone_end_pfn = zone_start_pfn + size;
 	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);
+		start_pfn = clamp(start_pfn, zone_start_pfn, zone_end_pfn);
+		end_pfn = clamp(end_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);
 		}
 	}
@@ -6903,7 +6903,7 @@ 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