lkml.org 
[lkml]   [2013]   [Nov]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 0/3] makedumpfile: hugepage filtering for vmcore dump
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


\
 
 \ /
  Last update: 2013-11-06 03:21    [W:0.130 / U:0.068 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site