linux-kernel - [PATCH v2 10/28] mm/bootmem_info: export register_page_bootmem

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Message-ID: <20250129224157.2046079-11-fvdl@google.com>
Date: Wed, 29 Jan 2025 22:41:39 +0000
From: Frank van der Linden <fvdl@...gle.com>
To: akpm@...ux-foundation.org, muchun.song@...ux.dev, linux-mm@...ck.org, 
	linux-kernel@...r.kernel.org
Cc: yuzhao@...gle.com, usamaarif642@...il.com, joao.m.martins@...cle.com, 
	roman.gushchin@...ux.dev, Frank van der Linden <fvdl@...gle.com>
Subject: [PATCH v2 10/28] mm/bootmem_info: export register_page_bootmem_memmap

If other mm code wants to use this function for early
memmap inialization (on the platforms that have it),
it should be made available properly, not just
unconditionally in mm.h

Make this function available for such cases.

Signed-off-by: Frank van der Linden <fvdl@...gle.com>
---
 arch/powerpc/mm/init_64.c    | 1 +
 include/linux/bootmem_info.h | 7 +++++++
 include/linux/mm.h           | 3 ---
 3 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c
index d96bbc001e73..c2d99d68d40e 100644
--- a/arch/powerpc/mm/init_64.c
+++ b/arch/powerpc/mm/init_64.c
@@ -41,6 +41,7 @@
 #include <linux/libfdt.h>
 #include <linux/memremap.h>
 #include <linux/memory.h>
+#include <linux/bootmem_info.h>
 
 #include <asm/pgalloc.h>
 #include <asm/page.h>
diff --git a/include/linux/bootmem_info.h b/include/linux/bootmem_info.h
index d8a8d245824a..4c506e76a808 100644
--- a/include/linux/bootmem_info.h
+++ b/include/linux/bootmem_info.h
@@ -18,6 +18,8 @@ enum bootmem_type {
 
 #ifdef CONFIG_HAVE_BOOTMEM_INFO_NODE
 void __init register_page_bootmem_info_node(struct pglist_data *pgdat);
+void register_page_bootmem_memmap(unsigned long section_nr, struct page *map,
+				  unsigned long nr_pages);
 
 void get_page_bootmem(unsigned long info, struct page *page,
 		enum bootmem_type type);
@@ -58,6 +60,11 @@ static inline void register_page_bootmem_info_node(struct pglist_data *pgdat)
 {
 }
 
+static inline void register_page_bootmem_memmap(unsigned long section_nr,
+		struct page *map, unsigned long nr_pages)
+{
+}
+
 static inline void put_page_bootmem(struct page *page)
 {
 }
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 7b1068ddcbb7..6dfc41b461af 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -3918,9 +3918,6 @@ static inline bool vmemmap_can_optimize(struct vmem_altmap *altmap,
 }
 #endif
 
-void register_page_bootmem_memmap(unsigned long section_nr, struct page *map,
-				  unsigned long nr_pages);
-
 enum mf_flags {
 	MF_COUNT_INCREASED = 1 << 0,
 	MF_ACTION_REQUIRED = 1 << 1,
-- 
2.48.1.262.g85cc9f2d1e-goog