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* [PATCH v2 00/17] mm/slab: introduce new freed objects management way, OBJFREELIST_SLAB
@ 2016-02-26  6:01 js1304
  2016-02-26  6:01 ` [PATCH v2 01/17] mm/slab: fix stale code comment js1304
                   ` (16 more replies)
  0 siblings, 17 replies; 26+ messages in thread
From: js1304 @ 2016-02-26  6:01 UTC (permalink / raw)
  To: Andrew Morton
  Cc: Christoph Lameter, Pekka Enberg, David Rientjes,
	Jesper Dangaard Brouer, Vlastimil Babka, linux-mm, linux-kernel,
	Joonsoo Kim

From: Joonsoo Kim <iamjoonsoo.kim@lge.com>

This submission is just intended to get more review if possible.
This patchset is already on mmotm for a month and there is
no problem at all. No changes from mmotm one.

Changes from v1:
o Fold fixes into corresponding ones (no difference from mmotm)
o Add a clean-up patch at last per Christoph's comment

Hello,

This patchset implements new freed object management way, that is,
OBJFREELIST_SLAB. Purpose of it is to reduce memory overhead in SLAB.

SLAB needs a array to manage freed objects in a slab. If there is
leftover after objects are packed into a slab, we can use it as
a management array, and, in this case, there is no memory waste.
But, in the other cases, we need to allocate extra memory for
a management array or utilize dedicated internal memory in a slab for it.
Both cases causes memory waste so it's not good.

With this patchset, freed object itself can be used for a management
array. So, memory waste could be reduced. Detailed idea and numbers
are described in last patch's commit description. Please refer it.

Thanks.

Joonsoo Kim (17):
  mm/slab: fix stale code comment
  mm/slab: remove useless structure define
  mm/slab: remove the checks for slab implementation bug
  mm/slab: activate debug_pagealloc in SLAB when it is actually enabled
  mm/slab: use more appropriate condition check for debug_pagealloc
  mm/slab: clean up DEBUG_PAGEALLOC processing code
  mm/slab: alternative implementation for DEBUG_SLAB_LEAK
  mm/slab: remove object status buffer for DEBUG_SLAB_LEAK
  mm/slab: put the freelist at the end of slab page
  mm/slab: align cache size first before determination of OFF_SLAB
    candidate
  mm/slab: clean up cache type determination
  mm/slab: do not change cache size if debug pagealloc isn't possible
  mm/slab: make criteria for off slab determination robust and simple
  mm/slab: factor out slab list fixup code
  mm/slab: factor out debugging initialization in cache_init_objs()
  mm/slab: introduce new slab management type, OBJFREELIST_SLAB
  mm/slab: avoid returning values by reference

 include/linux/mm.h       |  12 +-
 include/linux/slab_def.h |   3 +
 mm/slab.c                | 626 ++++++++++++++++++++++++++---------------------
 3 files changed, 362 insertions(+), 279 deletions(-)

-- 
1.9.1

^ permalink raw reply	[flat|nested] 26+ messages in thread
end of thread, other threads:[~2016-02-26 17:06 UTC | newest]

Thread overview: 26+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-02-26  6:01 [PATCH v2 00/17] mm/slab: introduce new freed objects management way, OBJFREELIST_SLAB js1304
2016-02-26  6:01 ` [PATCH v2 01/17] mm/slab: fix stale code comment js1304
2016-02-26  6:01 ` [PATCH v2 02/17] mm/slab: remove useless structure define js1304
2016-02-26  6:01 ` [PATCH v2 03/17] mm/slab: remove the checks for slab implementation bug js1304
2016-02-26 16:05   ` Christoph Lameter
2016-02-26  6:01 ` [PATCH v2 04/17] mm/slab: activate debug_pagealloc in SLAB when it is actually enabled js1304
2016-02-26 16:06   ` Christoph Lameter
2016-02-26  6:01 ` [PATCH v2 05/17] mm/slab: use more appropriate condition check for debug_pagealloc js1304
2016-02-26 16:08   ` Christoph Lameter
2016-02-26  6:01 ` [PATCH v2 06/17] mm/slab: clean up DEBUG_PAGEALLOC processing code js1304
2016-02-26  6:01 ` [PATCH v2 07/17] mm/slab: alternative implementation for DEBUG_SLAB_LEAK js1304
2016-02-26  6:01 ` [PATCH v2 08/17] mm/slab: remove object status buffer " js1304
2016-02-26  6:01 ` [PATCH v2 09/17] mm/slab: put the freelist at the end of slab page js1304
2016-02-26  6:01 ` [PATCH v2 10/17] mm/slab: align cache size first before determination of OFF_SLAB candidate js1304
2016-02-26  6:01 ` [PATCH v2 11/17] mm/slab: clean up cache type determination js1304
2016-02-26  6:01 ` [PATCH v2 12/17] mm/slab: do not change cache size if debug pagealloc isn't possible js1304
2016-02-26 16:13   ` Christoph Lameter
2016-02-26 17:02     ` Joonsoo Kim
2016-02-26  6:01 ` [PATCH v2 13/17] mm/slab: make criteria for off slab determination robust and simple js1304
2016-02-26  6:01 ` [PATCH v2 14/17] mm/slab: factor out slab list fixup code js1304
2016-02-26  6:01 ` [PATCH v2 15/17] mm/slab: factor out debugging initialization in cache_init_objs() js1304
2016-02-26  6:01 ` [PATCH v2 16/17] mm/slab: introduce new slab management type, OBJFREELIST_SLAB js1304
2016-02-26 16:21   ` Christoph Lameter
2016-02-26 17:06     ` Joonsoo Kim
2016-02-26  6:01 ` [PATCH v2 17/17] mm/slab: avoid returning values by reference js1304
2016-02-26 16:22   ` Christoph Lameter

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