From: Muchun Song <songmuchun@bytedance.com>
Date: Tue, 28 Jun 2022 09:22:32 +0000 (+0800)
Subject: mm: hugetlb_vmemmap: replace early_param() with core_param()
X-Git-Tag: v6.1-rc5~631^2~18
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=30152245c63b59f835193b37212991bc24669645;p=platform%2Fkernel%2Flinux-starfive.git

mm: hugetlb_vmemmap: replace early_param() with core_param()

After the following commit:

  78f39084b41d ("mm: hugetlb_vmemmap: add hugetlb_optimize_vmemmap sysctl")

There is no order requirement between the parameter of
"hugetlb_free_vmemmap" and "hugepages" since we have removed the check of
whether HVO is enabled from hugetlb_vmemmap_init().  Therefore we can
safely replace early_param() with core_param() to simplify the code.

Link: https://lkml.kernel.org/r/20220628092235.91270-6-songmuchun@bytedance.com
Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Will Deacon <will@kernel.org>
Cc: Xiongchun Duan <duanxiongchun@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/mm/hugetlb_vmemmap.c b/mm/hugetlb_vmemmap.c
index f68e216..6c7117c 100644
--- a/mm/hugetlb_vmemmap.c
+++ b/mm/hugetlb_vmemmap.c
@@ -423,14 +423,8 @@ static int vmemmap_remap_alloc(unsigned long start, unsigned long end,
 DEFINE_STATIC_KEY_FALSE(hugetlb_optimize_vmemmap_key);
 EXPORT_SYMBOL(hugetlb_optimize_vmemmap_key);
 
-static bool vmemmap_optimize_enabled =
-	IS_ENABLED(CONFIG_HUGETLB_PAGE_OPTIMIZE_VMEMMAP_DEFAULT_ON);
-
-static int __init hugetlb_vmemmap_early_param(char *buf)
-{
-	return kstrtobool(buf, &vmemmap_optimize_enabled);
-}
-early_param("hugetlb_free_vmemmap", hugetlb_vmemmap_early_param);
+static bool vmemmap_optimize_enabled = IS_ENABLED(CONFIG_HUGETLB_PAGE_OPTIMIZE_VMEMMAP_DEFAULT_ON);
+core_param(hugetlb_free_vmemmap, vmemmap_optimize_enabled, bool, 0);
 
 /*
  * Previously discarded vmemmap pages will be allocated and remapping