From: Miaohe Lin <linmiaohe@huawei.com>
To: <akpm@linux-foundation.org>, <mike.kravetz@oracle.com>
Cc: <linux-mm@kvack.org>, <linux-kernel@vger.kernel.org>,
<linmiaohe@huawei.com>
Subject: [PATCH] mm/hugetlb: use helper huge_page_size() to get hugepage size
Date: Mon, 8 Feb 2021 03:24:50 -0500 [thread overview]
Message-ID: <20210208082450.15716-1-linmiaohe@huawei.com> (raw)
We can use helper huge_page_size() to get the hugepage size directly to
simplify the code slightly.
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
---
mm/hugetlb.c | 14 ++++++--------
1 file changed, 6 insertions(+), 8 deletions(-)
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 18628f8dbfb0..6cdb59d8f663 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -3199,7 +3199,7 @@ void __init hugetlb_add_hstate(unsigned int order)
BUG_ON(order == 0);
h = &hstates[hugetlb_max_hstate++];
h->order = order;
- h->mask = ~((1ULL << (order + PAGE_SHIFT)) - 1);
+ h->mask = ~(huge_page_size(h) - 1);
for (i = 0; i < MAX_NUMNODES; ++i)
INIT_LIST_HEAD(&h->hugepage_freelists[i]);
INIT_LIST_HEAD(&h->hugepage_activelist);
@@ -3474,7 +3474,7 @@ void hugetlb_report_meminfo(struct seq_file *m)
for_each_hstate(h) {
unsigned long count = h->nr_huge_pages;
- total += (PAGE_SIZE << huge_page_order(h)) * count;
+ total += huge_page_size(h) * count;
if (h == &default_hstate)
seq_printf(m,
@@ -3487,10 +3487,10 @@ void hugetlb_report_meminfo(struct seq_file *m)
h->free_huge_pages,
h->resv_huge_pages,
h->surplus_huge_pages,
- (PAGE_SIZE << huge_page_order(h)) / 1024);
+ huge_page_size(h) / SZ_1K);
}
- seq_printf(m, "Hugetlb: %8lu kB\n", total / 1024);
+ seq_printf(m, "Hugetlb: %8lu kB\n", total / SZ_1K);
}
int hugetlb_report_node_meminfo(char *buf, int len, int nid)
@@ -3524,7 +3524,7 @@ void hugetlb_show_meminfo(void)
h->nr_huge_pages_node[nid],
h->free_huge_pages_node[nid],
h->surplus_huge_pages_node[nid],
- 1UL << (huge_page_order(h) + PAGE_SHIFT - 10));
+ huge_page_size(h) >> 10);
}
void hugetlb_report_usage(struct seq_file *m, struct mm_struct *mm)
@@ -3647,9 +3647,7 @@ static int hugetlb_vm_op_split(struct vm_area_struct *vma, unsigned long addr)
static unsigned long hugetlb_vm_op_pagesize(struct vm_area_struct *vma)
{
- struct hstate *hstate = hstate_vma(vma);
-
- return 1UL << huge_page_shift(hstate);
+ return huge_page_size(hstate_vma(vma));
}
/*
--
2.19.1
next reply other threads:[~2021-02-08 8:26 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-08 8:24 Miaohe Lin [this message]
2021-02-09 0:45 ` [PATCH] mm/hugetlb: use helper huge_page_size() to get hugepage size Mike Kravetz
2021-02-09 1:24 ` Miaohe Lin
2021-02-09 1:36 ` Mike Kravetz
2021-02-09 1:57 ` Miaohe Lin
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