From: Jingbai Ma <jingbai.ma@hp.com>
To: Vivek Goyal <vgoyal@redhat.com>
Cc: bhe@redhat.com, tom.vaden@hp.com, kexec@lists.infradead.org,
ptesarik@suse.cz, linux-kernel@vger.kernel.org,
lisa.mitchell@hp.com, d.hatayama@jp.fujitsu.com,
kumagai-atsushi@mxc.nes.nec.co.jp, ebiederm@xmission.com,
anderson@redhat.com, Jingbai Ma <jingbai.ma@hp.com>
Subject: Re: [PATCH 0/3] makedumpfile: hugepage filtering for vmcore dump
Date: Wed, 06 Nov 2013 09:47:49 +0800 [thread overview]
Message-ID: <52799FC5.5040408@hp.com> (raw)
In-Reply-To: <20131105202631.GC4598@redhat.com>
On 11/06/2013 04:26 AM, Vivek Goyal wrote:
> On Tue, Nov 05, 2013 at 09:45:32PM +0800, Jingbai Ma wrote:
>> This patch set intend to exclude unnecessary hugepages from vmcore dump file.
>>
>> This patch requires the kernel patch to export necessary data structures into
>> vmcore: "kexec: export hugepage data structure into vmcoreinfo"
>> http://lists.infradead.org/pipermail/kexec/2013-November/009997.html
>>
>> This patch introduce two new dump levels 32 and 64 to exclude all unused and
>> active hugepages. The level to exclude all unnecessary pages will be 127 now.
>
> Interesting. Why hugepages should be treated any differentely than normal
> pages?
>
> If user asked to filter out free page, then it should be filtered and
> it should not matter whether it is a huge page or not?
Yes, free hugepages should be filtered out with other free pages. It
sounds reasonable.
But for active hugepages, I would offer user more choices/flexibility.
(maybe bad).
I'm OK to filter active hugepages with other user data page.
Any other comments?
>
> Thanks
> Vivek
--
Thanks,
Jingbai Ma
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WARNING: multiple messages have this Message-ID (diff)
From: Jingbai Ma <jingbai.ma@hp.com>
To: Vivek Goyal <vgoyal@redhat.com>
Cc: Jingbai Ma <jingbai.ma@hp.com>,
ptesarik@suse.cz, d.hatayama@jp.fujitsu.com,
kumagai-atsushi@mxc.nes.nec.co.jp, bhe@redhat.com,
tom.vaden@hp.com, kexec@lists.infradead.org,
linux-kernel@vger.kernel.org, lisa.mitchell@hp.com,
anderson@redhat.com, ebiederm@xmission.com
Subject: Re: [PATCH 0/3] makedumpfile: hugepage filtering for vmcore dump
Date: Wed, 06 Nov 2013 09:47:49 +0800 [thread overview]
Message-ID: <52799FC5.5040408@hp.com> (raw)
In-Reply-To: <20131105202631.GC4598@redhat.com>
On 11/06/2013 04:26 AM, Vivek Goyal wrote:
> On Tue, Nov 05, 2013 at 09:45:32PM +0800, Jingbai Ma wrote:
>> This patch set intend to exclude unnecessary hugepages from vmcore dump file.
>>
>> This patch requires the kernel patch to export necessary data structures into
>> vmcore: "kexec: export hugepage data structure into vmcoreinfo"
>> http://lists.infradead.org/pipermail/kexec/2013-November/009997.html
>>
>> This patch introduce two new dump levels 32 and 64 to exclude all unused and
>> active hugepages. The level to exclude all unnecessary pages will be 127 now.
>
> Interesting. Why hugepages should be treated any differentely than normal
> pages?
>
> If user asked to filter out free page, then it should be filtered and
> it should not matter whether it is a huge page or not?
Yes, free hugepages should be filtered out with other free pages. It
sounds reasonable.
But for active hugepages, I would offer user more choices/flexibility.
(maybe bad).
I'm OK to filter active hugepages with other user data page.
Any other comments?
>
> Thanks
> Vivek
--
Thanks,
Jingbai Ma
next prev parent reply other threads:[~2013-11-06 1:48 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-05 13:45 [PATCH 0/3] makedumpfile: hugepage filtering for vmcore dump Jingbai Ma
2013-11-05 13:45 ` Jingbai Ma
2013-11-05 13:45 ` [PATCH 1/3] makedumpfile: hugepage filtering: add hugepage filtering functions Jingbai Ma
2013-11-05 13:45 ` Jingbai Ma
2013-11-05 13:45 ` [PATCH 2/3] makedumpfile: hugepage filtering: add excluding hugepage messages Jingbai Ma
2013-11-05 13:45 ` Jingbai Ma
2013-11-05 13:46 ` [PATCH 3/3] makedumpfile: hugepage filtering: add new dump levels for manual page Jingbai Ma
2013-11-05 13:46 ` Jingbai Ma
2013-11-05 20:26 ` [PATCH 0/3] makedumpfile: hugepage filtering for vmcore dump Vivek Goyal
2013-11-05 20:26 ` Vivek Goyal
2013-11-06 1:47 ` Jingbai Ma [this message]
2013-11-06 1:47 ` Jingbai Ma
2013-11-06 1:53 ` Vivek Goyal
2013-11-06 1:53 ` Vivek Goyal
2013-11-06 2:21 ` Atsushi Kumagai
2013-11-06 2:21 ` Atsushi Kumagai
2013-11-06 14:23 ` Vivek Goyal
2013-11-06 14:23 ` Vivek Goyal
2013-11-07 8:57 ` Jingbai Ma
2013-11-07 8:57 ` Jingbai Ma
2013-11-08 5:12 ` Atsushi Kumagai
2013-11-08 5:12 ` Atsushi Kumagai
2013-11-08 5:21 ` HATAYAMA Daisuke
2013-11-08 5:21 ` HATAYAMA Daisuke
2013-11-08 5:27 ` Jingbai Ma
2013-11-08 5:27 ` Jingbai Ma
2013-11-11 9:06 ` Petr Tesarik
2013-11-11 9:06 ` Petr Tesarik
2013-11-07 0:54 ` HATAYAMA Daisuke
2013-11-07 0:54 ` HATAYAMA Daisuke
2013-11-22 7:16 ` HATAYAMA Daisuke
2013-11-22 7:16 ` HATAYAMA Daisuke
2013-11-28 7:08 ` Atsushi Kumagai
2013-11-28 7:08 ` Atsushi Kumagai
2013-11-28 7:48 ` HATAYAMA Daisuke
2013-11-28 7:48 ` HATAYAMA Daisuke
-- strict thread matches above, loose matches on Subject: below --
2013-11-29 3:02 Atsushi Kumagai
2013-11-29 3:02 ` Atsushi Kumagai
2013-11-29 3:21 ` HATAYAMA Daisuke
2013-11-29 3:21 ` HATAYAMA Daisuke
2013-11-29 4:23 ` Atsushi Kumagai
2013-11-29 4:23 ` Atsushi Kumagai
2013-11-29 4:56 ` HATAYAMA Daisuke
2013-11-29 4:56 ` HATAYAMA Daisuke
2013-12-03 8:05 Atsushi Kumagai
2013-12-03 8:05 ` Atsushi Kumagai
2013-12-03 9:05 ` HATAYAMA Daisuke
2013-12-03 9:05 ` HATAYAMA Daisuke
2013-12-04 6:08 ` Atsushi Kumagai
2013-12-04 6:08 ` Atsushi Kumagai
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