From: Ohhoon Kwon <ohoono.kwon@xxxxxxxxxxx> Subject: 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@xxxxxxxxxxx Signed-off-by: Ohhoon Kwon <ohoono.kwon@xxxxxxxxxxx> Acked-by: Michal Hocko <mhocko@xxxxxxxx> Acked-by: Mike Rapoport <rppt@xxxxxxxxxxxxx> Reviewed-by: David Hildenbrand <david@xxxxxxxxxx> Cc: Baoquan He <bhe@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- include/linux/mmzone.h | 1 - mm/sparse.c | 26 -------------------------- 2 files changed, 27 deletions(-) --- a/include/linux/mmzone.h~mm-sparse-remove-__section_nr-function +++ a/include/linux/mmzone.h @@ -1342,7 +1342,6 @@ static inline struct mem_section *__nr_t 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); /* --- a/mm/sparse.c~mm-sparse-remove-__section_nr-function +++ a/mm/sparse.c @@ -109,32 +109,6 @@ static inline int sparse_index_init(unsi } #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 _
