6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Li RongQing lirongqing@baidu.com
commit b322e88b3d553e85b4e15779491c70022783faa4 upstream.
Optimize hugetlb_pages_alloc_boot() to return immediately when max_huge_pages is 0, avoiding unnecessary CPU cycles and the below log message when hugepages aren't configured in the kernel command line. [ 3.702280] HugeTLB: allocation took 0ms with hugepage_allocation_threads=32
Link: https://lkml.kernel.org/r/20250814102333.4428-1-lirongqing@baidu.com Signed-off-by: Li RongQing lirongqing@baidu.com Reviewed-by: Dev Jain dev.jain@arm.com Tested-by: Dev Jain dev.jain@arm.com Reviewed-by: Jane Chu jane.chu@oracle.com Acked-by: David Hildenbrand david@redhat.com Cc: Muchun Song muchun.song@linux.dev Cc: Oscar Salvador osalvador@suse.de Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- mm/hugetlb.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -3298,6 +3298,9 @@ static void __init hugetlb_hstate_alloc_ return; }
+ if (!h->max_huge_pages) + return; + /* do node specific alloc */ for_each_online_node(i) { if (h->max_huge_pages_node[i] > 0) {