From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
To: Andi Kleen <andi@firstfloor.org>
Cc: akpm@linux-foundation.org, aarcange@redhat.com,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Andi Kleen <ak@linux.intel.com>
Subject: Re: [PATCH 6/8] Add __GFP_OTHER_NODE flag
Date: Thu, 3 Mar 2011 11:33:15 +0900 [thread overview]
Message-ID: <20110303113315.7bf5de3c.kamezawa.hiroyu@jp.fujitsu.com> (raw)
In-Reply-To: <1299113128-11349-7-git-send-email-andi@firstfloor.org>
On Wed, 2 Mar 2011 16:45:26 -0800
Andi Kleen <andi@firstfloor.org> wrote:
> From: Andi Kleen <ak@linux.intel.com>
>
> Add a new __GFP_OTHER_NODE flag to tell the low level numa statistics
> in zone_statistics() that an allocation is on behalf of another thread.
> This way the local and remote counters can be still correct, even
> when background daemons like khugepaged are changing memory
> mappings.
>
> This only affects the accounting, but I think it's worth doing that
> right to avoid confusing users.
>
> I first tried to just pass down the right node, but this required
> a lot of changes to pass down this parameter and at least one
> addition of a 10th argument to a 9 argument function. Using
> the flag is a lot less intrusive.
>
> Open: should be also used for migration?
>
> Cc: aarcange@redhat.com
> Signed-off-by: Andi Kleen <ak@linux.intel.com>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
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next prev parent reply other threads:[~2011-03-03 2:39 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-03 0:45 Fix NUMA problems in transparent hugepages and KSM Andi Kleen
2011-03-03 0:45 ` [PATCH 1/8] Fix interleaving for transparent hugepages v2 Andi Kleen
2011-03-03 2:12 ` KAMEZAWA Hiroyuki
2011-03-03 0:45 ` [PATCH 2/8] Change alloc_pages_vma to pass down the policy node for local policy Andi Kleen
2011-03-03 2:14 ` KAMEZAWA Hiroyuki
2011-03-03 0:45 ` [PATCH 3/8] Add alloc_page_vma_node Andi Kleen
2011-03-03 2:15 ` KAMEZAWA Hiroyuki
2011-03-03 0:45 ` [PATCH 4/8] Preserve original node for transparent huge page copies Andi Kleen
2011-03-03 2:17 ` KAMEZAWA Hiroyuki
2011-03-03 0:45 ` [PATCH 5/8] Use correct numa policy node for transparent hugepages Andi Kleen
2011-03-03 2:26 ` KAMEZAWA Hiroyuki
2011-03-03 0:45 ` [PATCH 6/8] Add __GFP_OTHER_NODE flag Andi Kleen
2011-03-03 2:33 ` KAMEZAWA Hiroyuki [this message]
2011-03-03 0:45 ` [PATCH 7/8] Use GFP_OTHER_NODE for transparent huge pages Andi Kleen
2011-03-03 2:35 ` KAMEZAWA Hiroyuki
2011-03-03 0:45 ` [PATCH 8/8] Add VM counters for transparent hugepages Andi Kleen
2011-03-03 9:18 ` Johannes Weiner
2011-03-03 18:09 ` Andi Kleen
-- strict thread matches above, loose matches on Subject: below --
2011-03-03 19:59 Fix NUMA problems in transparent hugepages and KSM Andi Kleen
2011-03-03 19:59 ` [PATCH 6/8] Add __GFP_OTHER_NODE flag Andi Kleen
2011-03-07 8:34 ` KOSAKI Motohiro
2011-03-07 16:33 ` Andi Kleen
2011-03-08 0:19 ` KOSAKI Motohiro
2011-02-23 1:51 Fix NUMA problems in transparent hugepages v2 Andi Kleen
2011-02-23 1:52 ` [PATCH 6/8] Add __GFP_OTHER_NODE flag Andi Kleen
2011-02-21 19:07 Fix NUMA problems in transparent hugepages and KSM Andi Kleen
2011-02-21 19:07 ` [PATCH 6/8] Add __GFP_OTHER_NODE flag Andi Kleen
2011-02-22 21:42 ` David Rientjes
2011-02-22 21:47 ` Andi Kleen
2011-02-22 22:08 ` David Rientjes
2011-02-22 22:52 ` Andi Kleen
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