From: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
To: Vlastimil Babka <vbabka@suse.cz>
Cc: Sachin Sant <sachinp@linux.vnet.ibm.com>,
Michal Hocko <mhocko@kernel.org>,
linux-mm@kvack.org, Kirill Tkhai <ktkhai@virtuozzo.com>,
Mel Gorman <mgorman@suse.de>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Andrew Morton <akpm@linux-foundation.org>,
Bharata B Rao <bharata@linux.ibm.com>,
linuxppc-dev@lists.ozlabs.org, Christopher Lameter <cl@linux.com>
Subject: Re: [PATCH 2/4] mm/slub: Use mem_node to allocate a new slab
Date: Wed, 18 Mar 2020 12:59:57 +0530 [thread overview]
Message-ID: <20200318072957.GD4879@linux.vnet.ibm.com> (raw)
In-Reply-To: <abeaec0d-e9ea-28ce-5b9a-9a6d41ab38c9@suse.cz>
* Vlastimil Babka <vbabka@suse.cz> [2020-03-17 16:29:21]:
> > If we pass this node 0 (which is memoryless/cpuless) to
> > alloc_pages_node. Please note I am only setting node_numa_mem only
> > for offline nodes. However we could change this to set for all offline and
> > memoryless nodes.
>
> That would indeed make sense.
>
> But I guess that alloc_pages would still crash as the result of
> numa_to_mem_node() is not passed down to alloc_pages() without this patch. In
> __alloc_pages_node() we currently have "The node must be valid and online" so
> offline nodes don't have zonelists. Either they get them, or we indeed need
> something like this patch. But in order to not make get_any_partial() dead code,
> the final replacement of invalid node with a valid one should be done in
> alloc_slab_page() I guess?
>
I am posting v2 with this change.
> >> node_to_mem_node() could be just a shortcut for the first zone's node in the
> >> zonelist, so that fallback follows the topology.
--
Thanks and Regards
Srikar Dronamraju
WARNING: multiple messages have this Message-ID (diff)
From: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
To: Vlastimil Babka <vbabka@suse.cz>
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, Mel Gorman <mgorman@suse.de>,
Michael Ellerman <mpe@ellerman.id.au>,
Sachin Sant <sachinp@linux.vnet.ibm.com>,
Michal Hocko <mhocko@kernel.org>,
Christopher Lameter <cl@linux.com>,
linuxppc-dev@lists.ozlabs.org,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Kirill Tkhai <ktkhai@virtuozzo.com>,
Bharata B Rao <bharata@linux.ibm.com>
Subject: Re: [PATCH 2/4] mm/slub: Use mem_node to allocate a new slab
Date: Wed, 18 Mar 2020 12:59:57 +0530 [thread overview]
Message-ID: <20200318072957.GD4879@linux.vnet.ibm.com> (raw)
In-Reply-To: <abeaec0d-e9ea-28ce-5b9a-9a6d41ab38c9@suse.cz>
* Vlastimil Babka <vbabka@suse.cz> [2020-03-17 16:29:21]:
> > If we pass this node 0 (which is memoryless/cpuless) to
> > alloc_pages_node. Please note I am only setting node_numa_mem only
> > for offline nodes. However we could change this to set for all offline and
> > memoryless nodes.
>
> That would indeed make sense.
>
> But I guess that alloc_pages would still crash as the result of
> numa_to_mem_node() is not passed down to alloc_pages() without this patch. In
> __alloc_pages_node() we currently have "The node must be valid and online" so
> offline nodes don't have zonelists. Either they get them, or we indeed need
> something like this patch. But in order to not make get_any_partial() dead code,
> the final replacement of invalid node with a valid one should be done in
> alloc_slab_page() I guess?
>
I am posting v2 with this change.
> >> node_to_mem_node() could be just a shortcut for the first zone's node in the
> >> zonelist, so that fallback follows the topology.
--
Thanks and Regards
Srikar Dronamraju
next prev parent reply other threads:[~2020-03-18 7:39 UTC|newest]
Thread overview: 92+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-18 10:45 [5.6.0-rc2-next-20200218/powerpc] Boot failure on POWER9 Sachin Sant
2020-02-18 10:50 ` Kirill Tkhai
2020-02-18 10:50 ` Kirill Tkhai
2020-02-18 11:01 ` Kirill Tkhai
2020-02-18 11:01 ` Kirill Tkhai
2020-02-18 11:35 ` Kirill Tkhai
2020-02-18 11:35 ` Kirill Tkhai
2020-02-18 11:40 ` Sachin Sant
2020-02-18 11:55 ` Michal Hocko
2020-02-18 11:55 ` Michal Hocko
2020-02-18 14:00 ` Sachin Sant
2020-02-18 14:00 ` Sachin Sant
2020-02-18 14:26 ` Michal Hocko
2020-02-18 14:26 ` Michal Hocko
2020-02-18 15:11 ` Sachin Sant
2020-02-18 15:11 ` Sachin Sant
2020-02-18 15:24 ` Michal Hocko
2020-02-18 15:24 ` Michal Hocko
2020-02-22 3:38 ` Christopher Lameter
2020-02-22 3:38 ` Christopher Lameter
2020-02-24 8:58 ` Michal Hocko
2020-02-24 8:58 ` Michal Hocko
2020-02-26 18:25 ` Christopher Lameter
2020-02-26 18:25 ` Christopher Lameter
2020-02-26 18:41 ` Michal Hocko
2020-02-26 18:41 ` Michal Hocko
2020-02-26 18:44 ` Christopher Lameter
2020-02-26 18:44 ` Christopher Lameter
2020-02-26 19:01 ` Michal Hocko
2020-02-26 19:01 ` Michal Hocko
2020-02-26 20:31 ` David Rientjes
2020-02-26 20:31 ` David Rientjes
2020-02-26 20:52 ` Michal Hocko
2020-02-26 20:52 ` Michal Hocko
2020-02-26 21:45 ` Vlastimil Babka
2020-02-26 21:45 ` Vlastimil Babka
2020-02-26 22:29 ` Vlastimil Babka
2020-02-26 22:29 ` Vlastimil Babka
2020-02-27 12:12 ` Michal Hocko
2020-02-27 12:12 ` Michal Hocko
2020-02-27 16:00 ` Sachin Sant
2020-02-27 16:00 ` Sachin Sant
2020-02-27 16:16 ` Vlastimil Babka
2020-02-27 18:26 ` Michal Hocko
2020-02-27 18:26 ` Michal Hocko
2020-03-10 15:01 ` Michal Hocko
2020-03-10 15:01 ` Michal Hocko
2020-03-12 12:18 ` Michael Ellerman
2020-03-12 12:18 ` Michael Ellerman
2020-03-12 16:51 ` Sachin Sant
2020-03-12 16:51 ` Sachin Sant
2020-03-13 10:48 ` Michael Ellerman
2020-03-13 10:48 ` Michael Ellerman
2020-03-13 11:12 ` Srikar Dronamraju
2020-03-13 11:12 ` Srikar Dronamraju
2020-03-13 11:35 ` Vlastimil Babka
2020-03-13 11:35 ` Vlastimil Babka
2020-03-14 8:10 ` Sachin Sant
2020-02-27 12:02 ` Michal Hocko
2020-02-27 12:02 ` Michal Hocko
2020-02-18 11:38 ` Sachin Sant
2020-02-18 11:53 ` Kirill Tkhai
2020-03-17 13:17 ` [PATCH 0/4] Fix kmalloc_node on offline nodes Srikar Dronamraju
2020-03-17 13:17 ` Srikar Dronamraju
2020-03-17 13:17 ` [PATCH 1/4] mm: Check for node_online in node_present_pages Srikar Dronamraju
2020-03-17 13:17 ` Srikar Dronamraju
2020-03-17 13:37 ` Srikar Dronamraju
2020-03-17 13:37 ` Srikar Dronamraju
2020-03-17 13:17 ` [PATCH 2/4] mm/slub: Use mem_node to allocate a new slab Srikar Dronamraju
2020-03-17 13:17 ` Srikar Dronamraju
2020-03-17 13:34 ` Vlastimil Babka
2020-03-17 13:34 ` Vlastimil Babka
2020-03-17 13:45 ` Srikar Dronamraju
2020-03-17 13:45 ` Srikar Dronamraju
2020-03-17 13:53 ` Vlastimil Babka
2020-03-17 13:53 ` Vlastimil Babka
2020-03-17 14:51 ` Srikar Dronamraju
2020-03-17 14:51 ` Srikar Dronamraju
2020-03-17 15:29 ` Vlastimil Babka
2020-03-17 15:29 ` Vlastimil Babka
2020-03-18 7:29 ` Srikar Dronamraju [this message]
2020-03-18 7:29 ` Srikar Dronamraju
2020-03-17 16:41 ` Srikar Dronamraju
2020-03-17 16:41 ` Srikar Dronamraju
2020-03-17 13:17 ` [PATCH 3/4] mm: Implement reset_numa_mem Srikar Dronamraju
2020-03-17 13:17 ` Srikar Dronamraju
2020-03-17 13:17 ` [PATCH 4/4] powerpc/numa: Set fallback nodes for offline nodes Srikar Dronamraju
2020-03-17 13:17 ` Srikar Dronamraju
2020-03-17 14:22 ` Bharata B Rao
2020-03-17 14:22 ` Bharata B Rao
2020-03-17 14:29 ` Srikar Dronamraju
2020-03-17 14:29 ` Srikar Dronamraju
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