From: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
To: Dave Hansen <dave.hansen@intel.com>
Cc: linux-mm@kvack.org, Mel Gorman <mgorman@techsingularity.net>,
Vlastimil Babka <vbabka@suse.cz>,
Michal Hocko <mhocko@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Michael Ellerman <mpe@ellerman.id.au>,
linuxppc-dev@lists.ozlabs.org, mahesh@linux.vnet.ibm.com,
hbathini@linux.vnet.ibm.com
Subject: Re: [PATCH 1/2] mm: Allow disabling deferred struct page initialisation
Date: Wed, 3 Aug 2016 12:08:08 +0530 [thread overview]
Message-ID: <20160803063808.GI6310@linux.vnet.ibm.com> (raw)
In-Reply-To: <57A0E1D1.8020608@intel.com>
* Dave Hansen <dave.hansen@intel.com> [2016-08-02 11:09:21]:
> On 08/02/2016 06:19 AM, Srikar Dronamraju wrote:
> > Kernels compiled with CONFIG_DEFERRED_STRUCT_PAGE_INIT will initialise
> > only certain size memory per node. The certain size takes into account
> > the dentry and inode cache sizes. However such a kernel when booting a
> > secondary kernel will not be able to allocate the required amount of
> > memory to suffice for the dentry and inode caches. This results in
> > crashes like the below on large systems such as 32 TB systems.
>
> What's a "secondary kernel"?
>
I mean the kernel thats booted to collect the crash, On fadump, the
first kernel acts as the secondary kernel i.e the same kernel is booted
to collect the crash.
--
Thanks and Regards
Srikar Dronamraju
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next prev parent reply other threads:[~2016-08-03 6:38 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-02 13:19 [PATCH 0/0] Disable deferred struct page initialisation on Fadump Srikar Dronamraju
2016-08-02 13:19 ` [PATCH 1/2] mm: Allow disabling deferred struct page initialisation Srikar Dronamraju
2016-08-02 18:09 ` Dave Hansen
2016-08-03 6:38 ` Srikar Dronamraju [this message]
2016-08-03 18:17 ` Dave Hansen
2016-08-04 5:25 ` Srikar Dronamraju
2016-08-02 13:19 ` [PATCH 2/2] fadump: Disable deferred page struct initialisation Srikar Dronamraju
2016-08-03 5:20 ` Balbir Singh
2016-08-03 6:07 ` Vlastimil Babka
2016-08-03 11:34 ` Michael Ellerman
2016-08-03 6:35 ` Srikar Dronamraju
2016-08-03 19:40 ` Dave Hansen
2016-08-04 5:10 ` Srikar Dronamraju
2016-08-04 10:28 ` Mel Gorman
2016-08-04 13:54 ` Srikar Dronamraju
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