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* [PATCH 0/6] hugetlb: V6 constrain allocation/free based on task mempolicy
@ 2009-09-09 16:31 ` Lee Schermerhorn
  0 siblings, 0 replies; 44+ messages in thread
From: Lee Schermerhorn @ 2009-09-09 16:31 UTC (permalink / raw)
  To: linux-mm, linux-numa
  Cc: akpm, Mel Gorman, Randy Dunlap, Nishanth Aravamudan,
	David Rientjes, Adam Litke, Andy Whitcroft, eric.whitney

PATCH 0/6 hugetlb: numa control of persistent huge pages alloc/free

Against:  2.6.31-rc7-mmotm-090827-1651

This is V6 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 V6 [patches 1-6] 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 "nr_hugepages", 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 addresses more review comments, described in the patches.

Attached to V6, I'm sending 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.
The "nodes with memory" state already tracks memory/node hot-plug.
Further, 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.

Because of the interaction with memory hotplug, these 3 patches will
likely require more work and testing before merging.  The first six
patches do not depend on these 3 and, IMO, need not wait for them.

--
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^ permalink raw reply	[flat|nested] 44+ messages in thread
* [PATCH 0/6] hugetlb: V5 constrain allocation/free based on task mempolicy
@ 2009-08-28 16:03 Lee Schermerhorn
  2009-08-28 16:03   ` Lee Schermerhorn
  0 siblings, 1 reply; 44+ messages in thread
From: Lee Schermerhorn @ 2009-08-28 16:03 UTC (permalink / raw)
  To: linux-mm
  Cc: akpm, Mel Gorman, Nishanth Aravamudan, David Rientjes,
	linux-numa, Adam Litke, Andy Whitcroft, eric.whitney

PATCH 0/6 hugetlb: numa control of persistent huge pages alloc/free

Against:  2.6.31-rc7-mmotm-090827-0057

This is V5 of a series of patches to provide control over the location
of the allocation and freeing of persistent huge pages on a NUMA
platform.

This series uses the task NUMA mempolicy of the task modifying
"nr_hugepages" to constrain the affected nodes.  This method is
based on Mel Gorman's suggestion to use task mempolicy.  One of
the benefits of this method is that it does not *require*
modification to hugeadm(8) to use this feature.  One of the possible
downsides is that task mempolicy is limited by cpuset constraints.

V4 added a subset of the hugepages sysfs attributes to each per
node system device directory 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 addresses review comments -- changes described in patch
descriptions.  Should be almost ready for -mm?

Note, I haven't implemented a boot time parameter to constrain the
boot time allocation of huge pages.  This can be added if anyone feels
strongly that it is required.

--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org.  For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>

^ permalink raw reply	[flat|nested] 44+ messages in thread

end of thread, other threads:[~2009-09-11 22:38 UTC | newest]

Thread overview: 44+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2009-09-09 16:31 [PATCH 0/6] hugetlb: V6 constrain allocation/free based on task mempolicy Lee Schermerhorn
2009-09-09 16:31 ` Lee Schermerhorn
2009-09-09 16:31 ` [PATCH 1/6] hugetlb: rework hstate_next_node_* functions Lee Schermerhorn
2009-09-09 16:31 ` [PATCH 2/6] hugetlb: add nodemask arg to huge page alloc, free and surplus adjust fcns Lee Schermerhorn
2009-09-09 16:31 ` [PATCH 3/6] hugetlb: introduce alloc_nodemask_of_node Lee Schermerhorn
2009-09-10 23:05   ` Andrew Morton
2009-09-10 23:05     ` Andrew Morton
2009-09-10 23:17     ` David Rientjes
2009-09-10 23:17       ` David Rientjes
2009-09-10 23:36       ` Andrew Morton
2009-09-10 23:36         ` Andrew Morton
2009-09-10 23:43         ` David Rientjes
2009-09-11 13:11     ` Lee Schermerhorn
2009-09-11 13:11       ` Lee Schermerhorn
2009-09-11 22:38       ` David Rientjes
2009-09-11 22:38         ` David Rientjes
2009-09-09 16:31 ` [PATCH 4/6] hugetlb: derive huge pages nodes allowed from task mempolicy Lee Schermerhorn
2009-09-10 23:15   ` Andrew Morton
2009-09-11 13:12     ` Lee Schermerhorn
2009-09-09 16:31 ` [PATCH 5/6] hugetlb: add per node hstate attributes Lee Schermerhorn
2009-09-09 16:31   ` Lee Schermerhorn
2009-09-10 12:32   ` Mel Gorman
2009-09-10 12:32     ` Mel Gorman
2009-09-10 14:26     ` Lee Schermerhorn
2009-09-10 14:26       ` Lee Schermerhorn
2009-09-10 19:50       ` David Rientjes
2009-09-10 19:58         ` Lee Schermerhorn
2009-09-10 23:31   ` Andrew Morton
2009-09-11 13:12     ` Lee Schermerhorn
2009-09-11 13:12       ` Lee Schermerhorn
2009-09-09 16:32 ` [PATCH 6/6] hugetlb: update hugetlb documentation for mempolicy based management Lee Schermerhorn
2009-09-09 16:32   ` Lee Schermerhorn
2009-09-09 16:32 ` [PATCH 1/3] hugetlb: use only nodes with memory for huge pages Lee Schermerhorn
2009-09-09 16:32   ` Lee Schermerhorn
2009-09-10 23:33   ` Andrew Morton
2009-09-11 13:54     ` Lee Schermerhorn
2009-09-09 16:32 ` [PATCH 2/3] hugetlb: handle memory hot-plug events Lee Schermerhorn
2009-09-09 16:32   ` Lee Schermerhorn
2009-09-09 16:32 ` [PATCH 3/3] hugetlb: offload per node attribute registrations Lee Schermerhorn
2009-09-09 16:32   ` Lee Schermerhorn
  -- strict thread matches above, loose matches on Subject: below --
2009-08-28 16:03 [PATCH 0/6] hugetlb: V5 constrain allocation/free based on task mempolicy Lee Schermerhorn
2009-08-28 16:03 ` [PATCH 2/6] hugetlb: add nodemask arg to huge page alloc, free and surplus adjust fcns Lee Schermerhorn
2009-08-28 16:03   ` Lee Schermerhorn
2009-09-03 18:39   ` David Rientjes
2009-09-03 18:39     ` David Rientjes

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