diff options
| author | Baoquan He <bhe@redhat.com> | 2024-03-25 22:56:45 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-04-25 20:56:11 -0700 |
| commit | 90e796e22e35af0d19874c36fa4a22709aec1659 (patch) | |
| tree | 303ac261e6b2b13e9ae9cbd4e4d47424e9cbfe41 /mm/mm_init.c | |
| parent | 0ac5e785dcb797a3f0af1b205ce48134e186e88f (diff) | |
mm/mm_init.c: remove unneeded calc_memmap_size()
Nobody calls calc_memmap_size() now.
Link: https://lkml.kernel.org/r/20240325145646.1044760-6-bhe@redhat.com
Signed-off-by: Baoquan He <bhe@redhat.com>
Reviewed-by: Mike Rapoport (IBM) <rppt@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/mm_init.c')
| -rw-r--r-- | mm/mm_init.c | 20 |
1 files changed, 0 insertions, 20 deletions
diff --git a/mm/mm_init.c b/mm/mm_init.c index b211b30231cb..8c261572ca6e 100644 --- a/mm/mm_init.c +++ b/mm/mm_init.c @@ -1332,26 +1332,6 @@ static void __init calculate_node_totalpages(struct pglist_data *pgdat, pr_debug("On node %d totalpages: %lu\n", pgdat->node_id, realtotalpages); } -static unsigned long __init calc_memmap_size(unsigned long spanned_pages, - unsigned long present_pages) -{ - unsigned long pages = spanned_pages; - - /* - * Provide a more accurate estimation if there are holes within - * the zone and SPARSEMEM is in use. If there are holes within the - * zone, each populated memory region may cost us one or two extra - * memmap pages due to alignment because memmap pages for each - * populated regions may not be naturally aligned on page boundary. - * So the (present_pages >> 4) heuristic is a tradeoff for that. - */ - if (spanned_pages > present_pages + (present_pages >> 4) && - IS_ENABLED(CONFIG_SPARSEMEM)) - pages = present_pages; - - return PAGE_ALIGN(pages * sizeof(struct page)) >> PAGE_SHIFT; -} - #ifdef CONFIG_TRANSPARENT_HUGEPAGE static void pgdat_init_split_queue(struct pglist_data *pgdat) { |