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* [PATCH v3 0/8] mm: Use hotplug_memory_notifier() instead of register_hotmemory_notifier()
@ 2022-09-22 14:18 Liu Shixin
  2022-09-22 14:18 ` [PATCH v3 1/8] cgroup/cpuset: use hotplug_memory_notifier() directly Liu Shixin
                   ` (7 more replies)
  0 siblings, 8 replies; 11+ messages in thread
From: Liu Shixin @ 2022-09-22 14:18 UTC (permalink / raw)
  To: Andrew Morton, David Hildenbrand, Waiman Long, Zefan Li,
	Christoph Lameter
  Cc: linux-mm, linux-kernel, Liu Shixin, Kefeng Wang

Patch f02c69680088 introduced register_hotmemory_notifier() to avoid a
compile problem with gcc-4.4.4:

    When CONFIG_MEMORY_HOTPLUG=n, we don't want the memory-hotplug notifier
    handlers to be included in the .o files, for space reasons.
    
    The existing hotplug_memory_notifier() tries to handle this but testing
    with gcc-4.4.4 shows that it doesn't work - the hotplug functions are
    still present in the .o files.

Since patch 316346243be6 has already updated the minimum gcc version to 5.1.
The previous problem mentioned in patch f02c69680088 is not existed. So we
can now revert to use hotplug_memory_notifier() directly rather than
register_hotmemory_notifier().

In the last patch, we move all hotplug memory notifier priority to same
file for easy sorting.

Patch [1-6] replace register_hotmemory_notifier() with hotplug_memory_notifier()
for every caller.
Patch [7] remove unused register_hotmemory_notifier().
Patch [9] move all priority of hotplug memory callback into include/linux/memory.h
for easy sorting.

v2->v3: fold last two patches, change MM_BATCH_CALLBACK_PRI to
MM_COMPUTE_BATCH_PRI and rewrite the commit log.
v1->v2: fix compile error of patch [4,5].

Liu Shixin (8):
  cgroup/cpuset: use hotplug_memory_notifier() directly
  fs/proc/kcore.c: use hotplug_memory_notifier() directly
  mm/slub.c: use hotplug_memory_notifier() directly
  mm/mmap: use hotplug_memory_notifier() directly
  mm/mm_init.c: use hotplug_memory_notifier() directly
  ACPI: HMAT: use hotplug_memory_notifier() directly
  memory: remove unused register_hotmemory_notifier()
  memory: move hotplug memory notifier priority to same file for easy
    sorting

 drivers/acpi/numa/hmat.c     |  7 +------
 fs/proc/kcore.c              |  7 +------
 include/linux/memory-tiers.h |  1 -
 include/linux/memory.h       | 15 +++++++--------
 kernel/cgroup/cpuset.c       |  7 +------
 mm/kasan/shadow.c            |  2 +-
 mm/ksm.c                     |  2 +-
 mm/memory-tiers.c            |  2 +-
 mm/mm_init.c                 |  8 +-------
 mm/mmap.c                    |  6 +-----
 mm/page_ext.c                |  2 +-
 mm/slub.c                    |  7 +------
 12 files changed, 17 insertions(+), 49 deletions(-)

-- 
2.25.1


^ permalink raw reply	[flat|nested] 11+ messages in thread
end of thread, other threads:[~2022-09-23  1:56 UTC | newest]

Thread overview: 11+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-09-22 14:18 [PATCH v3 0/8] mm: Use hotplug_memory_notifier() instead of register_hotmemory_notifier() Liu Shixin
2022-09-22 14:18 ` [PATCH v3 1/8] cgroup/cpuset: use hotplug_memory_notifier() directly Liu Shixin
2022-09-22 17:56   ` David Hildenbrand
2022-09-23  1:56     ` Liu Shixin
2022-09-22 14:18 ` [PATCH v3 2/8] fs/proc/kcore.c: " Liu Shixin
2022-09-22 14:18 ` [PATCH v3 3/8] mm/slub.c: " Liu Shixin
2022-09-22 14:19 ` [PATCH v3 4/8] mm/mmap: " Liu Shixin
2022-09-22 14:19 ` [PATCH v3 5/8] mm/mm_init.c: " Liu Shixin
2022-09-22 14:19 ` [PATCH v3 6/8] ACPI: HMAT: " Liu Shixin
2022-09-22 14:19 ` [PATCH v3 7/8] memory: remove unused register_hotmemory_notifier() Liu Shixin
2022-09-22 14:19 ` [PATCH v3 8/8] memory: move hotplug memory notifier priority to same file for easy sorting Liu Shixin

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