From: Hyeonggon Yoo <42.hyeyoo@gmail.com>
To: Vlastimil Babka <vbabka@suse.cz>
Cc: Christoph Lameter <cl@linux.com>,
David Rientjes <rientjes@google.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Pekka Enberg <penberg@kernel.org>,
Roman Gushchin <roman.gushchin@linux.dev>,
Andrew Morton <akpm@linux-foundation.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Matthew Wilcox <willy@infradead.org>,
patches@lists.linux.dev, Dennis Zhou <dennis@kernel.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 10/12] mm, slub: remove percpu slabs with CONFIG_SLUB_TINY
Date: Sun, 27 Nov 2022 20:05:52 +0900 [thread overview]
Message-ID: <Y4NEkF8DI1uXFRv4@hyeyoo> (raw)
In-Reply-To: <20221121171202.22080-11-vbabka@suse.cz>
On Mon, Nov 21, 2022 at 06:12:00PM +0100, Vlastimil Babka wrote:
> SLUB gets most of its scalability by percpu slabs. However for
> CONFIG_SLUB_TINY the goal is minimal memory overhead, not scalability.
> Thus, #ifdef out the whole kmem_cache_cpu percpu structure and
> associated code. Additionally to the slab page savings, this reduces
> percpu allocator usage, and code size.
[+Cc Dennis]
Wondering if we can reduce (or zero) early reservation of percpu area
when #if !defined(CONFIG_SLUB) || defined(CONFIG_SLUB_TINY)?
> This change builds on recent commit c7323a5ad078 ("mm/slub: restrict
> sysfs validation to debug caches and make it safe"), as caches with
> enabled debugging also avoid percpu slabs and all allocations and
> freeing ends up working with the partial list. With a bit more
> refactoring by the preceding patches, use the same code paths with
> CONFIG_SLUB_TINY.
>
> Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
--
Thanks,
Hyeonggon
next prev parent reply other threads:[~2022-11-27 11:05 UTC|newest]
Thread overview: 102+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-21 17:11 [PATCH 00/12] Introduce CONFIG_SLUB_TINY and deprecate SLOB Vlastimil Babka
2022-11-21 17:11 ` Vlastimil Babka
2022-11-21 17:11 ` Vlastimil Babka
2022-11-21 17:11 ` Vlastimil Babka
2022-11-21 17:11 ` [PATCH 01/12] mm, slab: ignore hardened usercopy parameters when disabled Vlastimil Babka
2022-11-21 21:35 ` Kees Cook
2022-11-23 14:23 ` Vlastimil Babka
2022-11-24 11:16 ` Hyeonggon Yoo
2022-11-24 11:26 ` Vlastimil Babka
2022-11-24 12:33 ` Hyeonggon Yoo
2022-11-21 17:11 ` [PATCH 02/12] mm, slub: add CONFIG_SLUB_TINY Vlastimil Babka
2022-11-24 1:08 ` Roman Gushchin
2022-11-24 11:33 ` Hyeonggon Yoo
2022-11-25 7:55 ` Vlastimil Babka
2022-11-21 17:11 ` [PATCH 03/12] mm, slub: disable SYSFS support with CONFIG_SLUB_TINY Vlastimil Babka
2022-11-24 1:12 ` Roman Gushchin
2022-11-24 9:00 ` Vlastimil Babka
2022-11-21 17:11 ` [PATCH 04/12] mm, slub: retain no free slabs on partial list " Vlastimil Babka
2022-11-24 1:12 ` Roman Gushchin
2022-11-24 11:38 ` Hyeonggon Yoo
2022-11-21 17:11 ` [PATCH 05/12] mm, slub: lower the default slub_max_order " Vlastimil Babka
2022-11-24 1:16 ` Roman Gushchin
2022-11-24 11:40 ` Hyeonggon Yoo
2022-11-21 17:11 ` [PATCH 06/12] mm, slub: don't create kmalloc-rcl caches " Vlastimil Babka
2022-11-23 13:53 ` Vlastimil Babka
2022-11-24 12:06 ` Hyeonggon Yoo
2022-11-24 12:12 ` Vlastimil Babka
2022-11-24 12:55 ` Hyeonggon Yoo
2022-11-24 13:23 ` Hyeonggon Yoo
2022-11-24 14:25 ` Hyeonggon Yoo
2022-11-21 17:11 ` [PATCH 07/12] mm, slab: ignore SLAB_RECLAIM_ACCOUNT " Vlastimil Babka
2022-11-24 1:20 ` Roman Gushchin
2022-11-24 9:09 ` Vlastimil Babka
2022-11-24 9:21 ` Christoph Lameter
2022-11-27 23:11 ` Vlastimil Babka
2022-11-21 17:11 ` [PATCH 08/12] mm, slub: refactor free debug processing Vlastimil Babka
2022-11-27 10:18 ` Hyeonggon Yoo
2022-11-21 17:11 ` [PATCH 09/12] mm, slub: split out allocations from pre/post hooks Vlastimil Babka
2022-11-27 10:54 ` Hyeonggon Yoo
2022-11-27 23:01 ` Vlastimil Babka
2022-11-28 13:06 ` Hyeonggon Yoo
2022-11-21 17:12 ` [PATCH 10/12] mm, slub: remove percpu slabs with CONFIG_SLUB_TINY Vlastimil Babka
2022-11-27 11:05 ` Hyeonggon Yoo [this message]
2022-12-12 10:54 ` Vlastimil Babka
2022-12-12 13:11 ` Dennis Zhou
2022-12-13 3:04 ` Baoquan He
2022-12-13 14:02 ` Hyeonggon Yoo
2022-12-18 10:16 ` Hyeonggon Yoo
2022-11-21 17:12 ` [PATCH 11/12] mm, slub: don't aggressively inline " Vlastimil Babka
2022-11-28 13:19 ` Hyeonggon Yoo
2022-11-21 17:12 ` [PATCH 12/12] mm, slob: rename CONFIG_SLOB to CONFIG_SLOB_DEPRECATED Vlastimil Babka
2022-11-21 17:12 ` Vlastimil Babka
2022-11-21 17:12 ` Vlastimil Babka
2022-11-21 17:12 ` Vlastimil Babka
2022-11-21 18:41 ` Aaro Koskinen
2022-11-21 18:41 ` Aaro Koskinen
2022-11-21 18:41 ` Aaro Koskinen
2022-11-21 18:41 ` Aaro Koskinen
2022-11-21 19:42 ` Vlastimil Babka
2022-11-21 19:42 ` Vlastimil Babka
2022-11-21 19:42 ` Vlastimil Babka
2022-11-21 19:42 ` Vlastimil Babka
2022-11-22 6:47 ` Damien Le Moal
2022-11-22 6:47 ` Damien Le Moal
2022-11-22 6:47 ` Damien Le Moal
2022-11-22 6:47 ` Damien Le Moal
2022-11-22 16:08 ` Arnd Bergmann
2022-11-22 16:08 ` Arnd Bergmann
2022-11-22 16:08 ` Arnd Bergmann
2022-11-22 16:08 ` Arnd Bergmann
2022-11-24 1:21 ` Roman Gushchin
2022-11-24 1:21 ` Roman Gushchin
2022-11-24 1:21 ` Roman Gushchin
2022-11-24 1:21 ` Roman Gushchin
2022-12-02 17:59 ` Palmer Dabbelt
2022-12-02 17:59 ` Palmer Dabbelt
2022-12-02 17:59 ` Palmer Dabbelt
2022-12-02 17:59 ` Palmer Dabbelt
2022-12-05 12:25 ` Damien Le Moal
2022-12-05 12:25 ` Damien Le Moal
2022-12-05 12:25 ` Damien Le Moal
2022-12-05 12:25 ` Damien Le Moal
2022-12-13 13:41 ` Hyeonggon Yoo
2022-12-13 13:41 ` Hyeonggon Yoo
2022-12-13 13:41 ` Hyeonggon Yoo
2022-12-13 13:41 ` Hyeonggon Yoo
2022-11-22 16:33 ` [PATCH 00/12] Introduce CONFIG_SLUB_TINY and deprecate SLOB Arnd Bergmann
2022-11-22 16:33 ` Arnd Bergmann
2022-11-22 16:33 ` Arnd Bergmann
2022-11-22 16:33 ` Arnd Bergmann
2022-11-22 16:59 ` Vlastimil Babka
2022-11-22 16:59 ` Vlastimil Babka
2022-11-22 16:59 ` Vlastimil Babka
2022-11-22 16:59 ` Vlastimil Babka
2022-11-22 17:15 ` Arnd Bergmann
2022-11-22 17:15 ` Arnd Bergmann
2022-11-22 17:15 ` Arnd Bergmann
2022-11-22 17:15 ` Arnd Bergmann
2022-11-24 20:30 ` Mike Rapoport
2022-11-24 20:30 ` Mike Rapoport
2022-11-24 20:30 ` Mike Rapoport
2022-11-24 20:30 ` Mike Rapoport
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=Y4NEkF8DI1uXFRv4@hyeyoo \
--to=42.hyeyoo@gmail.com \
--cc=akpm@linux-foundation.org \
--cc=cl@linux.com \
--cc=dennis@kernel.org \
--cc=iamjoonsoo.kim@lge.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=patches@lists.linux.dev \
--cc=penberg@kernel.org \
--cc=rientjes@google.com \
--cc=roman.gushchin@linux.dev \
--cc=torvalds@linux-foundation.org \
--cc=vbabka@suse.cz \
--cc=willy@infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.