From: David Howells <dhowells@redhat.com>
To: Sam Ravnborg <sam@ravnborg.org>
Cc: dhowells@redhat.com, Tim Abbott <tabbott@MIT.EDU>,
Linux kernel mailing list <linux-kernel@vger.kernel.org>,
Anders Kaseorg <andersk@MIT.EDU>, Waseem Daher <wdaher@MIT.EDU>,
Denys Vlasenko <vda.linux@googlemail.com>,
Jeff Arnold <jbarnold@MIT.EDU>
Subject: Re: [PATCH 0/6] section name cleanup for mn10300
Date: Fri, 01 May 2009 16:03:25 +0100 [thread overview]
Message-ID: <11976.1241190205@redhat.com> (raw)
In-Reply-To: <20090501144857.GA25398@uranus.ravnborg.org>
Sam Ravnborg <sam@ravnborg.org> wrote:
> I also thing 5/6 is wrong as it moves
> init_task befoe _edata.
>
> Could you try to back out them one by one
> to see which one causes the extra memory waste.
Moving init_task around is the culprit.
I guess the extra page has a 50% chance of being leaked anyway, as it depends
on the alignment of the previous section.
I can probably make the kernel reclaim it by sticking a label either side of
the alignment and if they're more than a page apart, reclaim the page that
ends at the second label.
David
prev parent reply other threads:[~2009-05-01 15:03 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-30 23:54 [PATCH 0/6] section name cleanup for mn10300 Tim Abbott
2009-04-30 23:54 ` [PATCH 1/6] mn10300: Use macros for .bss.page_aligned section Tim Abbott
2009-04-30 23:54 ` [PATCH 2/6] mn10300: Drop unused .data.idt section Tim Abbott
2009-04-30 23:54 ` [PATCH 3/6] mn10300: use NOSAVE_DATA macro for .data.nosave section Tim Abbott
2009-04-30 23:54 ` [PATCH 4/6] mn10300: use new macro for .data.cacheline_aligned section Tim Abbott
2009-04-30 23:54 ` [PATCH 5/6] mn10300: use new macros for .data.init_task Tim Abbott
2009-04-30 23:54 ` [PATCH 6/6] mn10300: use new macro for .data.read_mostly section Tim Abbott
2009-05-01 14:46 ` [PATCH 5/6] mn10300: use new macros for .data.init_task David Howells
2009-05-01 15:00 ` Tim Abbott
2009-05-01 15:11 ` Sam Ravnborg
2009-05-01 14:35 ` [PATCH 0/6] section name cleanup for mn10300 David Howells
2009-05-01 14:48 ` Sam Ravnborg
2009-05-01 15:03 ` David Howells [this message]
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