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mm: hugetlb_vmemmap: simplify hugetlb_vmemmap_init() a bit

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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: Muchun Song <songmuchun@bytedance.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Muchun Song 2023-02-23 14:59:47 +08:00 • committed by Andrew Morton
parent bdd034de3a
commit 12318566c5
1 changed files with 6 additions and 8 deletions
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14
mm/hugetlb_vmemmap.c
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@ -590,17 +590,15 @@ 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;
}
for_each_hstate(h) {
if (hugetlb_vmemmap_optimizable(h)) {
register_sysctl_init("vm", hugetlb_vmemmap_sysctls);
break;
}
}
return 0;