From: Rick Sherm <rick.sherm@yahoo.com>
To: linux-numa@vger.kernel.org
Subject: Memory policy question for NUMA arch....
Date: Tue, 6 Apr 2010 13:46:44 -0700 (PDT) [thread overview]
Message-ID: <524835.89860.qm@web114303.mail.gq1.yahoo.com> (raw)
CC'ing linux-numa. I emailed it to linux-kernel but forgot to 'CC' linux-numa. Please CC 'linux-kernel' while replying.
Hello,
On a NUMA host, if a driver calls __get_free_pages() then
it will eventually invoke ->alloc_pages_current(..). The comment
above/within alloc_pages_current() says 'current->mempolicy' will be
used.So what memory policy will kick-in if the driver is trying to
allocate some memory blocks during driver load time(say from probe_one)? System-wide default policy,correct?
What if the driver wishes to i) stay confined to a 'cpulist' OR ii) use a different mem-policy? How
do I achieve this?
I will choose the 'cpulist' after I am successfuly able to affinitize the MSI-X vectors.
regards
Rick
next reply other threads:[~2010-04-06 20:46 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-06 20:46 Rick Sherm [this message]
2010-04-07 9:00 ` Memory policy question for NUMA arch Andi Kleen
2010-04-07 15:48 ` Rick Sherm
2010-04-07 17:27 ` Lee Schermerhorn
[not found] <243351.5510.qm@web111910.mail.gq1.yahoo.com>
2010-04-16 23:17 ` Chetan Loke
2010-04-17 6:35 ` Andi Kleen
2010-04-17 14:59 ` Chetan Loke
2010-04-17 19:30 ` Andi Kleen
2010-04-19 15:16 ` Lee Schermerhorn
-- strict thread matches above, loose matches on Subject: below --
2010-04-20 20:34 Chetan Loke
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