From: David Hildenbrand <david@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: linux-mm@kvack.org, David Hildenbrand <david@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
Baoquan He <bhe@redhat.com>,
Charan Teja Reddy <charante@codeaurora.org>,
Dan Williams <dan.j.williams@intel.com>,
Fenghua Yu <fenghua.yu@intel.com>,
Logan Gunthorpe <logang@deltatee.com>,
"Matthew Wilcox (Oracle)" <willy@infradead.org>,
Mel Gorman <mgorman@suse.de>, Michal Hocko <mhocko@suse.com>,
Michel Lespinasse <walken@google.com>,
Mike Rapoport <rppt@kernel.org>,
Oscar Salvador <osalvador@suse.de>,
Pankaj Gupta <pankaj.gupta.linux@gmail.com>,
Tony Luck <tony.luck@intel.com>,
Wei Yang <richard.weiyang@linux.alibaba.com>
Subject: [PATCH v2 00/10] mm/memory_hotplug: online_pages()/offline_pages() cleanups
Date: Wed, 19 Aug 2020 19:59:47 +0200 [thread overview]
Message-ID: <20200819175957.28465-1-david@redhat.com> (raw)
These are a bunch of cleanups for online_pages()/offline_pages() and
related code, mostly getting rid of memory hole handling that is no longer
necessary. There is only a single walk_system_ram_range() call left in
offline_pages(), to make sure we don't have any memory holes. I had some
of these patches lying around for a longer time but didn't have time to
polish them.
In addition, the last patch marks all pageblocks of memory to get onlined
MIGRATE_ISOLATE, so pages that have just been exposed to the buddy cannot
get allocated before onlining is complete. Once heavy lifting is done,
the pageblocks are set to MIGRATE_MOVABLE, such that allocations are
possible.
I played with DIMMs and virtio-mem on x86-64 and didn't spot any surprises.
I verified that the numer of isolated pageblocks is correctly handled when
onlining/offlining.
v1 -> v2:
- "mm/memory_hotplug: enforce section granularity when onlining/offlining"
-- Extended the patch description regarding alignment requirements
-- Fixed a typo
- Squashed "mm/memory_hotplug: simplify offlining of pages in
offline_pages()" and "mm/memory_hotplug: simplify checking if all pages are
isolated in offline_pages()", resulting in "mm/memory_hotplug: simplify page
offlining"
- Added ACKs
David Hildenbrand (10):
mm/memory_hotplug: inline __offline_pages() into offline_pages()
mm/memory_hotplug: enforce section granularity when onlining/offlining
mm/memory_hotplug: simplify page offlining
mm/page_alloc: simplify __offline_isolated_pages()
mm/memory_hotplug: drop nr_isolate_pageblock in offline_pages()
mm/page_isolation: simplify return value of start_isolate_page_range()
mm/memory_hotplug: simplify page onlining
mm/page_alloc: drop stale pageblock comment in memmap_init_zone*()
mm: pass migratetype into memmap_init_zone() and
move_pfn_range_to_zone()
mm/memory_hotplug: mark pageblocks MIGRATE_ISOLATE while onlining
memory
arch/ia64/mm/init.c | 4 +-
include/linux/memory_hotplug.h | 7 +-
include/linux/mm.h | 3 +-
mm/Kconfig | 2 +-
mm/memory_hotplug.c | 156 ++++++++++++++-------------------
mm/memremap.c | 3 +-
mm/page_alloc.c | 64 ++++----------
mm/page_isolation.c | 7 +-
8 files changed, 98 insertions(+), 148 deletions(-)
--
2.26.2
next reply other threads:[~2020-08-19 18:00 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-19 17:59 David Hildenbrand [this message]
2020-08-19 17:59 ` [PATCH v2 01/10] mm/memory_hotplug: inline __offline_pages() into offline_pages() David Hildenbrand
2020-08-24 10:26 ` Oscar Salvador
2020-08-31 10:05 ` Pankaj Gupta
2020-08-19 17:59 ` [PATCH v2 02/10] mm/memory_hotplug: enforce section granularity when onlining/offlining David Hildenbrand
2020-08-24 10:39 ` Oscar Salvador
2020-08-25 2:11 ` Wei Yang
2020-09-08 9:14 ` David Hildenbrand
2020-08-19 17:59 ` [PATCH v2 03/10] mm/memory_hotplug: simplify page offlining David Hildenbrand
2020-08-24 10:44 ` Oscar Salvador
2020-09-03 21:58 ` Andrew Morton
2020-09-04 5:47 ` David Hildenbrand
2020-09-04 7:46 ` Michal Hocko
2020-09-04 19:21 ` Andrew Morton
2020-09-07 6:45 ` Michal Hocko
2020-09-08 9:10 ` David Hildenbrand
2020-08-19 17:59 ` [PATCH v2 04/10] mm/page_alloc: simplify __offline_isolated_pages() David Hildenbrand
2020-08-24 10:48 ` Oscar Salvador
2020-08-19 17:59 ` [PATCH v2 05/10] mm/memory_hotplug: drop nr_isolate_pageblock in offline_pages() David Hildenbrand
2020-08-24 10:49 ` Oscar Salvador
2020-08-19 17:59 ` [PATCH v2 06/10] mm/page_isolation: simplify return value of start_isolate_page_range() David Hildenbrand
2020-08-24 10:51 ` Oscar Salvador
2020-08-19 17:59 ` [PATCH v2 07/10] mm/memory_hotplug: simplify page onlining David Hildenbrand
2020-08-24 10:55 ` Oscar Salvador
2020-08-19 17:59 ` [PATCH v2 08/10] mm/page_alloc: drop stale pageblock comment in memmap_init_zone*() David Hildenbrand
2020-08-24 10:58 ` Oscar Salvador
2020-08-19 17:59 ` [PATCH v2 09/10] mm: pass migratetype into memmap_init_zone() and move_pfn_range_to_zone() David Hildenbrand
2020-08-24 11:59 ` Oscar Salvador
2020-08-19 17:59 ` [PATCH v2 10/10] mm/memory_hotplug: mark pageblocks MIGRATE_ISOLATE while onlining memory David Hildenbrand
2020-08-24 12:07 ` Oscar Salvador
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