Commit 11e02d37 authored by Ohhoon Kwon's avatar Ohhoon Kwon Committed by Linus Torvalds
Browse files

mm: sparse: remove __section_nr() function 

As the last users of __section_nr() are gone, let's remove unused function
__section_nr().

Link: https://lkml.kernel.org/r/20210707150212.855-4-ohoono.kwon@samsung.com


Signed-off-by: default avatarOhhoon Kwon <ohoono.kwon@samsung.com>
Acked-by: default avatarMichal Hocko <mhocko@suse.com>
Acked-by: default avatarMike Rapoport <rppt@linux.ibm.com>
Reviewed-by: default avatarDavid Hildenbrand <david@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent fc1f5e98

include/linux/mmzone.h

+0 −1
Original line number Diff line number Diff line
@@ -1342,7 +1342,6 @@ static inline struct mem_section *__nr_to_section(unsigned long nr) 
		return NULL;

	return &mem_section[SECTION_NR_TO_ROOT(nr)][nr & SECTION_ROOT_MASK];

}

extern unsigned long __section_nr(struct mem_section *ms);

extern size_t mem_section_usage_size(void);



/*

mm/sparse.c

+0 −26
Original line number Diff line number Diff line
@@ -109,32 +109,6 @@ static inline int sparse_index_init(unsigned long section_nr, int nid) 
}

#endif



#ifdef CONFIG_SPARSEMEM_EXTREME

unsigned long __section_nr(struct mem_section *ms)

{

	unsigned long root_nr;

	struct mem_section *root = NULL;



	for (root_nr = 0; root_nr < NR_SECTION_ROOTS; root_nr++) {

		root = __nr_to_section(root_nr * SECTIONS_PER_ROOT);

		if (!root)

			continue;



		if ((ms >= root) && (ms < (root + SECTIONS_PER_ROOT)))

		     break;

	}



	VM_BUG_ON(!root);



	return (root_nr * SECTIONS_PER_ROOT) + (ms - root);

}

#else

unsigned long __section_nr(struct mem_section *ms)

{

	return (unsigned long)(ms - mem_section[0]);

}

#endif



/*

 * During early boot, before section_mem_map is used for an actual

 * mem_map, we use section_mem_map to store the section's NUMA