linux-kernel - Re: [PATCH] Move memory controller allocations to their own slabs

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <47D60E74.6080109@linux.vnet.ibm.com>
Date:	Tue, 11 Mar 2008 10:15:40 +0530
From:	Balbir Singh <balbir@...ux.vnet.ibm.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	Paul Menage <menage@...gle.com>,
	Pavel Emelianov <xemul@...nvz.org>,
	Hugh Dickins <hugh@...itas.com>,
	Sudhir Kumar <skumar@...ux.vnet.ibm.com>,
	YAMAMOTO Takashi <yamamoto@...inux.co.jp>, lizf@...fujitsu.com,
	linux-kernel@...r.kernel.org, taka@...inux.co.jp,
	linux-mm@...ck.org, David Rientjes <rientjes@...gle.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Subject: Re: [PATCH] Move memory controller allocations to their own slabs

Andrew Morton wrote:
> On Tue, 11 Mar 2008 10:01:49 +0530 Balbir Singh <balbir@...ux.vnet.ibm.com> wrote:
> 
>>
>> Move the memory controller data structures page_cgroup and
>> mem_cgroup_per_zone to their own slab caches. It saves space on the system,
>> allocations are not necessarily pushed to order of 2 and should provide
>> performance benefits.
> 
> eh?  Those structures are tiny.  Which slab allocator has gone and used an
> order-2 allocation and for which structure did it (stupidly) do this?
> 
> 

When I say order of 2, I meant with kmalloc. They are rounded of to 64, 128 byte
boundary. I wanted to pack these objects more closely.

-- 
	Warm Regards,
	Balbir Singh
	Linux Technology Center
	IBM, ISTL
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/