mm/page_alloc.c: remove unused free_bootmem_with_active_regions

Since commit 397dc00e249ec64e10 ("mips: sgi-ip27: switch from DISCONTIGMEM
to SPARSEMEM"), the last caller of free_bootmem_with_active_regions() was
gone.  Now no user calls it any more.

Let's remove it.

Signed-off-by: Baoquan He <bhe@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Link: http://lkml.kernel.org/r/20200402143455.5145-1-bhe@redhat.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 0d998c8..4141ebc 100644 (file)
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -2415,8 +2415,6 @@ static inline unsigned long get_num_physpages(void)
  *     memblock_add_node(base, size, nid)
  * free_area_init(max_zone_pfns);
  *
- * free_bootmem_with_active_regions() calls free_bootmem_node() for each
- * registered physical page range.  Similarly
  * sparse_memory_present_with_active_regions() calls memory_present() for
  * each range when SPARSEMEM is enabled.
  */
@@ -2429,8 +2427,6 @@ extern unsigned long absent_pages_in_range(unsigned long start_pfn,
 extern void get_pfn_range_for_nid(unsigned int nid,
                        unsigned long *start_pfn, unsigned long *end_pfn);
 extern unsigned long find_min_pfn_with_active_regions(void);
-extern void free_bootmem_with_active_regions(int nid,
-                                               unsigned long max_low_pfn);
 extern void sparse_memory_present_with_active_regions(int nid);
 
 #ifndef CONFIG_NEED_MULTIPLE_NODES

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 5207a9e..a1a4f88 100644 (file)
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -6295,31 +6295,6 @@ void __meminit init_currently_empty_zone(struct zone *zone,
        zone->initialized = 1;
 }
 
-/**
- * free_bootmem_with_active_regions - Call memblock_free_early_nid for each active range
- * @nid: The node to free memory on. If MAX_NUMNODES, all nodes are freed.
- * @max_low_pfn: The highest PFN that will be passed to memblock_free_early_nid
- *
- * If an architecture guarantees that all ranges registered contain no holes
- * and may be freed, this this function may be used instead of calling
- * memblock_free_early_nid() manually.
- */
-void __init free_bootmem_with_active_regions(int nid, unsigned long max_low_pfn)
-{
-       unsigned long start_pfn, end_pfn;
-       int i, this_nid;
-
-       for_each_mem_pfn_range(i, nid, &start_pfn, &end_pfn, &this_nid) {
-               start_pfn = min(start_pfn, max_low_pfn);
-               end_pfn = min(end_pfn, max_low_pfn);
-
-               if (start_pfn < end_pfn)
-                       memblock_free_early_nid(PFN_PHYS(start_pfn),
-                                       (end_pfn - start_pfn) << PAGE_SHIFT,
-                                       this_nid);
-       }
-}
-
 /**
  * sparse_memory_present_with_active_regions - Call memory_present for each active range
  * @nid: The node to call memory_present for. If MAX_NUMNODES, all nodes will be used.