From: Lee Schermerhorn <lee.schermerhorn@hp.com>
To: linux-mm@kvack.org, linux-numa@vger.kernel.org
Cc: akpm@linux-foundation.org, Mel Gorman <mel@csn.ul.ie>,
Randy Dunlap <randy.dunlap@oracle.com>,
Nishanth Aravamudan <nacc@us.ibm.com>,
David Rientjes <rientjes@google.com>, Adam Litke <agl@us.ibm.com>,
Andy Whitcroft <apw@canonical.com>,
eric.whitney@hp.com
Subject: [PATCH 0/11] hugetlb: V9 numa control of persistent huge pages alloc/free
Date: Mon, 05 Oct 2009 23:17:39 -0400 [thread overview]
Message-ID: <20091006031739.22576.5248.sendpatchset@localhost.localdomain> (raw)
PATCH 0/11 hugetlb: numa control of persistent huge pages alloc/free
Against: 2.6.31-mmotm-090925-1435 plus David Rientjes'
"nodemask: make NODEMASK_ALLOC more general" patch applied
This is V9 of a series of patches to provide control over the location
of the allocation and freeing of persistent huge pages on a NUMA
platform. Please consider for merging into mmotm.
This series uses two mechanisms to constrain the nodes from which
persistent huge pages are allocated: 1) the task NUMA mempolicy of
the task modifying a new sysctl "nr_hugepages_mempolicy", based on
a suggestion by Mel Gorman; and 2) a subset of the hugepages hstate
sysfs attributes have been added [in V4] to each node system device
under:
/sys/devices/node/node[0-9]*/hugepages.
The per node attibutes allow direct assignment of a huge page
count on a specific node, regardless of the task's mempolicy or
cpuset constraints.
V5 addressed review comments -- changes described in patch descriptions.
V6 addressed more review comments, described in the patches.
V6 also included a 3 patch series that implements an enhancement suggested
by David Rientjes: the default huge page nodes allowed mask will be the
nodes with memory rather than all on-line nodes and we will allocate per
node hstate attributes only for nodes with memory. This requires that we
register a memory on/off-line notifier and [un]register the attributes on
transitions to/from memoryless state.
V7 addressed review comments, described in the patches, and included a
new patch, originally from Mel Gorman, to define a new vm sysctl and
sysfs global hugepages attribute "nr_hugepages_mempolicy" rather than
apply mempolicy contraints to pool adujstments via the pre-existing
"nr_hugepages". The 3 patches to restrict hugetlb to visiting only
nodes with memory and to add/remove per node hstate attributes on
memory hotplug completed V7.
V8 reorganized the sysctl and sysfs attribute handlers to default
the nodes to default or define the nodes_allowed mask up in the
handlers and pass nodes_allowed [pointer] to set_max_huge_pages().
This cleanup was suggested by David Rientjes. V8 also merged Mel
Gorman's "nr_hugepages_mempolicy" back into the patch to compute
nodes_allowed from mempolicy.
V8 turned out to be too large a reorg to pull off without botching
something. V9 fixes these. In the meantime, David Rientjes has
posted a patch to generalize NODEMASK_ALLOC. This causes a build error
in my series. David provided a patch to fix the build failure. I
have included David's fixup as patch NN. This causes V9 to depend
on David's patch.
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next reply other threads:[~2009-10-06 3:17 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-06 3:17 Lee Schermerhorn [this message]
2009-10-06 3:17 ` [PATCH 1/11] hugetlb: rework hstate_next_node_* functions Lee Schermerhorn
2009-10-06 3:17 ` [PATCH 2/11] hugetlb: add nodemask arg to huge page alloc, free and surplus adjust fcns Lee Schermerhorn
2009-10-06 9:09 ` David Rientjes
2009-10-07 3:26 ` David Rientjes
2009-10-07 14:13 ` Lee Schermerhorn
2009-10-06 3:17 ` [PATCH 3/11] hugetlb: factor init_nodemask_of_node Lee Schermerhorn
2009-10-07 3:21 ` David Rientjes
2009-10-06 3:18 ` [PATCH 4/11] hugetlb: derive huge pages nodes allowed from task mempolicy Lee Schermerhorn
2009-10-07 3:26 ` David Rientjes
2009-10-07 16:30 ` Lee Schermerhorn
2009-10-07 20:09 ` David Rientjes
2009-10-06 3:18 ` [PATCH 5/11] hugetlb: accomodate reworked NODEMASK_ALLOC Lee Schermerhorn
2009-10-06 3:18 ` [PATCH 6/11] hugetlb: add generic definition of NUMA_NO_NODE Lee Schermerhorn
2009-10-06 9:28 ` David Rientjes
2009-10-06 3:18 ` [PATCH 7/11] hugetlb: add per node hstate attributes Lee Schermerhorn
2009-10-07 4:04 ` David Rientjes
2009-10-06 3:18 ` [PATCH 8/11] hugetlb: update hugetlb documentation for NUMA controls Lee Schermerhorn
2009-10-06 3:18 ` [PATCH 9/11] hugetlb: use only nodes with memory for huge pages Lee Schermerhorn
2009-10-06 3:18 ` [PATCH 10/11] hugetlb: handle memory hot-plug events Lee Schermerhorn
2009-10-07 4:12 ` David Rientjes
2009-10-06 3:19 ` [PATCH 11/11] hugetlb: offload per node attribute registrations Lee Schermerhorn
2009-10-06 16:01 ` Andi Kleen
2009-10-06 16:28 ` Lee Schermerhorn
2009-10-06 16:46 ` Andi Kleen
2009-10-06 17:57 ` Lee Schermerhorn
2009-10-07 8:24 ` [patch] mm: clear node in N_HIGH_MEMORY and stop kswapd when all memory is offlined David Rientjes
2009-10-07 14:25 ` Christoph Lameter
2009-10-07 16:48 ` Lee Schermerhorn
2009-10-07 19:53 ` David Rientjes
2009-10-06 16:02 ` [PATCH 0/11] hugetlb: V9 numa control of persistent huge pages alloc/free Andi Kleen
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