Commit 12318566 authored by Muchun Song's avatar Muchun Song Committed by Andrew Morton
Browse files

mm: hugetlb_vmemmap: simplify hugetlb_vmemmap_init() a bit 

The check of IS_ENABLED(CONFIG_PROC_SYSCTL) is unnecessary since
register_sysctl_init() will be empty in this case.  So, there is no
warnings after removing the check.

Link: https://lkml.kernel.org/r/20230223065947.64134-1-songmuchun@bytedance.com


Signed-off-by: default avatarMuchun Song <songmuchun@bytedance.com>
Reviewed-by: default avatarMike Kravetz <mike.kravetz@oracle.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent bdd034de

mm/hugetlb_vmemmap.c

+6 −8
Original line number Diff line number Diff line
@@ -590,19 +590,17 @@ static struct ctl_table hugetlb_vmemmap_sysctls[] = { 


static int __init hugetlb_vmemmap_init(void)

{

	const struct hstate *h;



	/* HUGETLB_VMEMMAP_RESERVE_SIZE should cover all used struct pages */

	BUILD_BUG_ON(__NR_USED_SUBPAGE * sizeof(struct page) > HUGETLB_VMEMMAP_RESERVE_SIZE);



	if (IS_ENABLED(CONFIG_PROC_SYSCTL)) {

		const struct hstate *h;



	for_each_hstate(h) {

		if (hugetlb_vmemmap_optimizable(h)) {

			register_sysctl_init("vm", hugetlb_vmemmap_sysctls);

			break;

		}

	}

	}

	return 0;

}

late_initcall(hugetlb_vmemmap_init);