Commit 243a75e2 authored by Frank van der Linden's avatar Frank van der Linden Committed by Andrew Morton
Browse files

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.

Link: https://lkml.kernel.org/r/20250228182928.2645936-10-fvdl@google.com


Signed-off-by: default avatarFrank van der Linden <fvdl@google.com>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Dan Carpenter <dan.carpenter@linaro.org>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Joao Martins <joao.m.martins@oracle.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Roman Gushchin (Cruise) <roman.gushchin@linux.dev>
Cc: Usama Arif <usamaarif642@gmail.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Yu Zhao <yuzhao@google.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent d3cd80c5

arch/powerpc/mm/init_64.c

+4 −0
Original line number Diff line number Diff line
@@ -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>
@@ -386,10 +387,13 @@ void __ref vmemmap_free(unsigned long start, unsigned long end, 
}



#endif



#ifdef CONFIG_HAVE_BOOTMEM_INFO_NODE

void register_page_bootmem_memmap(unsigned long section_nr,

				  struct page *start_page, unsigned long size)

{

}

#endif /* CONFIG_HAVE_BOOTMEM_INFO_NODE */



#endif /* CONFIG_SPARSEMEM_VMEMMAP */

include/linux/bootmem_info.h

+7 −0
Original line number Diff line number Diff line
@@ -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)

{

}

include/linux/mm.h

+0 −3
Original line number Diff line number Diff line
@@ -4018,9 +4018,6 @@ 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,