From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: riel@redhat.com, linux-mm@kvack.org, paulus@samba.org,
mgorman@suse.de, linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH V2 0/3] powerpc: Fix random application crashes with NUMA_BALANCING enabled
Date: Fri, 14 Feb 2014 11:01:25 +0530 [thread overview]
Message-ID: <87sirm2rbm.fsf@linux.vnet.ibm.com> (raw)
In-Reply-To: <20140213150639.2b9124797ac4975b6119f6f0@linux-foundation.org>
Andrew Morton <akpm@linux-foundation.org> writes:
> On Wed, 12 Feb 2014 09:13:35 +0530 "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> wrote:
>
>> Hello,
>>
>> This patch series fix random application crashes observed on ppc64 with numa
>> balancing enabled. Without the patch we see crashes like
>>
>> anacron[14551]: unhandled signal 11 at 0000000000000041 nip 000000003cfd54b4 lr 000000003cfd5464 code 30001
>> anacron[14599]: unhandled signal 11 at 0000000000000041 nip 000000003efc54b4 lr 000000003efc5464 code 30001
>>
>
> Random application crashes are bad. Which kernel version(s) do you think
> need fixing here?
>
> I grabbed the patches but would like to hear from Ben (or something
> approximating him) before doing anything with them, please.
>
Considering this impact only ppc64 and also only when numa balancing is enabled, we
only need to send this upstream. (no need to backport to any other
kernel versions)
We merged numa balancing support for ppc64
(c34a51ce49b40b9667cd7f5cc2e40475af8b4c3d) only in this merge window.
$git describe --contains c34a51ce49b40b9667cd7f5cc2e40475af8b4c3d
v3.14-rc1~80^2~35
-aneesh
next prev parent reply other threads:[~2014-02-14 5:31 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-12 3:43 [PATCH V2 0/3] powerpc: Fix random application crashes with NUMA_BALANCING enabled Aneesh Kumar K.V
2014-02-12 3:43 ` [PATCH V2 1/3] powerpc: mm: Add new set flag argument to pte/pmd update function Aneesh Kumar K.V
2014-02-12 3:43 ` [PATCH V2 2/3] mm: dirty accountable change only apply to non prot numa case Aneesh Kumar K.V
2014-02-12 3:43 ` [PATCH V2 3/3] mm: Use ptep/pmdp_set_numa for updating _PAGE_NUMA bit Aneesh Kumar K.V
2014-02-13 23:06 ` [PATCH V2 0/3] powerpc: Fix random application crashes with NUMA_BALANCING enabled Andrew Morton
2014-02-14 5:31 ` Aneesh Kumar K.V [this message]
2014-02-14 5:41 ` Benjamin Herrenschmidt
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