From: Dave Hansen <dave@linux.vnet.ibm.com>
To: Avi Kivity <avi@redhat.com>
Cc: linuxppc-dev@ozlabs.org, Greg KH <greg@kroah.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Subject: Re: [PATCH 0/8] v2 De-Couple sysfs memory directories from memory sections
Date: Tue, 28 Sep 2010 08:17:36 -0700 [thread overview]
Message-ID: <1285687056.19976.6155.camel@nimitz> (raw)
In-Reply-To: <4CA1E338.6070201@redhat.com>
On Tue, 2010-09-28 at 14:44 +0200, Avi Kivity wrote:
> Why not update sysfs directory creation to be fast, for example by using
> an rbtree instead of a linked list. This fixes an implementation
> problem in the kernel instead of working around it and creating a new ABI.
>
> New ABIs mean old tools won't work, and new tools need to understand
> both ABIs.
Just to be clear _these_ patches do not change the existing ABI.
They do add a new ABI: the end_phys_index file. But, it is completely
redundant at the moment. It could be taken out of these patches.
That said, fixing the directory creation speed is probably a worthwhile
endeavor too.
-- Dave
prev parent reply other threads:[~2010-09-28 15:17 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-27 19:09 [PATCH 0/8] v2 De-Couple sysfs memory directories from memory sections Nathan Fontenot
2010-09-27 19:21 ` [PATCH 1/8] v2 Move find_memory_block() routine Nathan Fontenot
2010-09-27 19:22 ` [PATCH 2/8] v2 Add section count to memory_block struct Nathan Fontenot
2010-09-28 9:31 ` Robin Holt
2010-09-28 18:14 ` Nathan Fontenot
2010-09-27 19:23 ` [PATCH 3/8] v2 Add mutex for adding/removing memory blocks Nathan Fontenot
2010-09-27 19:25 ` [PATCH 4/8] v2 Allow memory block to span multiple memory sections Nathan Fontenot
2010-09-27 23:55 ` Dave Hansen
2010-09-28 18:06 ` Nathan Fontenot
2010-09-28 12:48 ` Robin Holt
2010-09-28 18:20 ` Nathan Fontenot
2010-09-27 19:26 ` [PATCH 5/8] v2 Add end_phys_index file Nathan Fontenot
2010-09-27 19:27 ` [PATCH 6/8] v2 Update node sysfs code Nathan Fontenot
2010-09-28 9:29 ` Robin Holt
2010-09-28 15:21 ` Dave Hansen
2010-09-27 19:28 ` [PATCH 7/8] v2 Define memory_block_size_bytes() for powerpc/pseries Nathan Fontenot
2010-09-27 19:28 ` [PATCH 8/8] v2 Update memory hotplug documentation Nathan Fontenot
2010-09-28 12:45 ` Avi Kivity
2010-09-28 18:18 ` Nathan Fontenot
2010-09-28 12:38 ` [PATCH 0/8] v2 De-Couple sysfs memory directories from memory sections Robin Holt
2010-09-28 18:17 ` Nathan Fontenot
2010-09-29 19:28 ` Robin Holt
2010-09-30 15:17 ` Nathan Fontenot
2010-09-30 16:39 ` Robin Holt
2010-09-28 12:44 ` Avi Kivity
2010-09-28 15:12 ` Robin Holt
2010-09-28 16:34 ` Avi Kivity
2010-09-29 2:50 ` Greg KH
2010-09-29 8:32 ` Avi Kivity
2010-09-29 12:37 ` Greg KH
2010-09-29 13:39 ` Kay Sievers
2010-10-03 7:52 ` Avi Kivity
2010-09-28 15:17 ` Dave Hansen [this message]
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