From: Michal Hocko <mhocko@kernel.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: <linux-mm@kvack.org>, Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>,
Mike Kravetz <mike.kravetz@oracle.com>,
Mel Gorman <mgorman@suse.de>, Vlastimil Babka <vbabka@suse.cz>,
LKML <linux-kernel@vger.kernel.org>
Subject: [PATCH 0/3] mm, hugetlb: allow proper node fallback dequeue
Date: Thu, 22 Jun 2017 21:30:31 +0200 [thread overview]
Message-ID: <20170622193034.28972-1-mhocko@kernel.org> (raw)
Hi,
the previous version of this patchset has been sent as an RFC [1].
As it doesn't seem anybody would object I am resending and asking
for merging.
Original reasoning:
While working on a hugetlb migration issue addressed in a separate
patchset [2] I have noticed that the hugetlb allocations from the
preallocated pool are quite subotimal. There is no fallback mechanism
implemented and no notion of preferred node. I have tried to work
around it by [4] but Vlastimil was right to push back for a more robust
solution. It seems that such a solution is to reuse zonelist approach
we use for the page alloctor.
This series has 3 patches. The first one tries to make hugetlb
allocation layers more clear. The second one implements the zonelist
hugetlb pool allocation and introduces a preferred node semantic which
is used by the migration callbacks. The last patch is a clean up.
This is based on top of the current mmotm tree (mmotm-2017-06-16-13-59).
Shortlog
Michal Hocko (3):
mm, hugetlb: unclutter hugetlb allocation layers
hugetlb: add support for preferred node to alloc_huge_page_nodemask
mm, hugetlb, soft_offline: use new_page_nodemask for soft offline migration
And the diffstat looks promissing as well
include/linux/hugetlb.h | 5 +-
include/linux/migrate.h | 2 +-
mm/hugetlb.c | 215 ++++++++++++++++--------------------------------
mm/memory-failure.c | 10 +--
4 files changed, 75 insertions(+), 157 deletions(-)
[1] http://lkml.kernel.org/r/20170613090039.14393-1-mhocko@kernel.org
[2] http://lkml.kernel.org/r/20170608074553.22152-1-mhocko@kernel.org
[3] http://lkml.kernel.org/r/20170608074553.22152-5-mhocko@kernel.org
next reply other threads:[~2017-06-22 19:30 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-22 19:30 Michal Hocko [this message]
2017-06-22 19:30 ` [PATCH 1/3] mm, hugetlb: unclutter hugetlb allocation layers Michal Hocko
2017-06-26 18:30 ` Mike Kravetz
2017-06-22 19:30 ` [PATCH 2/3] hugetlb: add support for preferred node to alloc_huge_page_nodemask Michal Hocko
2017-06-26 18:31 ` Mike Kravetz
2017-06-22 19:30 ` [PATCH 3/3] mm, hugetlb, soft_offline: use new_page_nodemask for soft offline migration Michal Hocko
2017-06-26 18:32 ` Mike Kravetz
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