From: Mike Kravetz <mike.kravetz@oracle.com>
To: linux-kernel@vger.kernel.org, linux-mm@kvack.org
Cc: Muchun Song <songmuchun@bytedance.com>,
Michal Hocko <mhocko@suse.com>, Peter Xu <peterx@redhat.com>,
Naoya Horiguchi <naoya.horiguchi@linux.dev>,
James Houghton <jthoughton@google.com>,
Mina Almasry <almasrymina@google.com>,
"Aneesh Kumar K . V" <aneesh.kumar@linux.vnet.ibm.com>,
Anshuman Khandual <anshuman.khandual@arm.com>,
Paul Walmsley <paul.walmsley@sifive.com>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
Andrew Morton <akpm@linux-foundation.org>,
Mike Kravetz <mike.kravetz@oracle.com>
Subject: [RFC PATCH 0/3] hugetlb: speed up linear address scanning
Date: Fri, 27 May 2022 15:58:46 -0700 [thread overview]
Message-ID: <20220527225849.284839-1-mike.kravetz@oracle.com> (raw)
At unmap, fork and remap time hugetlb address ranges are linearly
scanned. We can optimize these scans if the ranges are sparsely
populated. Also, enable page table "Lazy copy" for hugetlb at fork.
Mike Kravetz (3):
hugetlb: skip to end of PT page mapping when pte not present
hugetlb: do not update address in huge_pmd_unshare
hugetlb: Lazy page table copies in fork()
include/linux/hugetlb.h | 5 +-
mm/hugetlb.c | 104 ++++++++++++++++++++++++++++------------
mm/memory.c | 2 +-
mm/rmap.c | 4 +-
4 files changed, 79 insertions(+), 36 deletions(-)
--
2.35.3
next reply other threads:[~2022-05-27 22:59 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-27 22:58 Mike Kravetz [this message]
2022-05-27 22:58 ` [RFC PATCH 1/3] hugetlb: skip to end of PT page mapping when pte not present Mike Kravetz
2022-05-30 10:10 ` Baolin Wang
2022-05-31 16:56 ` Mike Kravetz
2022-06-15 21:22 ` Mike Kravetz
2022-06-16 3:48 ` Baolin Wang
2022-05-30 19:56 ` Peter Xu
2022-05-31 2:04 ` Muchun Song
2022-05-31 17:05 ` Mike Kravetz
2022-06-01 6:58 ` Anshuman Khandual
2022-05-31 17:00 ` Mike Kravetz
2022-06-15 17:27 ` Mike Kravetz
2022-06-15 17:51 ` Peter Xu
2022-05-27 22:58 ` [RFC PATCH 2/3] hugetlb: do not update address in huge_pmd_unshare Mike Kravetz
2022-05-30 10:14 ` Baolin Wang
2022-05-30 15:36 ` Muchun Song
2022-05-31 17:06 ` Mike Kravetz
2022-05-27 22:58 ` [RFC PATCH 3/3] hugetlb: Lazy page table copies in fork() Mike Kravetz
2022-05-31 17:25 ` David Hildenbrand
2022-06-01 5:20 ` Muchun Song
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