Lee Schermerhorn 9a30523066 hugetlb: add per node hstate attributes ... Add the per huge page size control/query attributes to the per node sysdevs: /sys/devices/system/node/node<ID>/hugepages/hugepages-<size>/ nr_hugepages - r/w free_huge_pages - r/o surplus_huge_pages - r/o The patch attempts to re-use/share as much of the existing global hstate attribute initialization and handling, and the "nodes_allowed" constraint processing as possible. Calling set_max_huge_pages() with no node indicates a change to global hstate parameters. In this case, any non-default task mempolicy will be used to generate the nodes_allowed mask. A valid node id indicates an update to that node's hstate parameters, and the count argument specifies the target count for the specified node. From this info, we compute the target global count for the hstate and construct a nodes_allowed node mask contain only the specified node. Setting the node specific nr_hugepages via the per node attribute effectively ignores any task mempolicy or cpuset constraints. With this patch: (me):ls /sys/devices/system/node/node0/hugepages/hugepages-2048kB ./ ../ free_hugepages nr_hugepages surplus_hugepages Starting from: Node 0 HugePages_Total: 0 Node 0 HugePages_Free: 0 Node 0 HugePages_Surp: 0 Node 1 HugePages_Total: 0 Node 1 HugePages_Free: 0 Node 1 HugePages_Surp: 0 Node 2 HugePages_Total: 0 Node 2 HugePages_Free: 0 Node 2 HugePages_Surp: 0 Node 3 HugePages_Total: 0 Node 3 HugePages_Free: 0 Node 3 HugePages_Surp: 0 vm.nr_hugepages = 0 Allocate 16 persistent huge pages on node 2: (me):echo 16 >/sys/devices/system/node/node2/hugepages/hugepages-2048kB/nr_hugepages [Note that this is equivalent to: numactl -m 2 hugeadmin --pool-pages-min 2M:+16 ] Yields: Node 0 HugePages_Total: 0 Node 0 HugePages_Free: 0 Node 0 HugePages_Surp: 0 Node 1 HugePages_Total: 0 Node 1 HugePages_Free: 0 Node 1 HugePages_Surp: 0 Node 2 HugePages_Total: 16 Node 2 HugePages_Free: 16 Node 2 HugePages_Surp: 0 Node 3 HugePages_Total: 0 Node 3 HugePages_Free: 0 Node 3 HugePages_Surp: 0 vm.nr_hugepages = 16 Global controls work as expected--reduce pool to 8 persistent huge pages: (me):echo 8 >/sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages Node 0 HugePages_Total: 0 Node 0 HugePages_Free: 0 Node 0 HugePages_Surp: 0 Node 1 HugePages_Total: 0 Node 1 HugePages_Free: 0 Node 1 HugePages_Surp: 0 Node 2 HugePages_Total: 8 Node 2 HugePages_Free: 8 Node 2 HugePages_Surp: 0 Node 3 HugePages_Total: 0 Node 3 HugePages_Free: 0 Node 3 HugePages_Surp: 0 Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com> Acked-by: Mel Gorman <mel@csn.ul.ie> Reviewed-by: Andi Kleen <andi@firstfloor.org> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Randy Dunlap <randy.dunlap@oracle.com> Cc: Nishanth Aravamudan <nacc@us.ibm.com> Cc: David Rientjes <rientjes@google.com> Cc: Adam Litke <agl@us.ibm.com> Cc: Andy Whitcroft <apw@canonical.com> Cc: Eric Whitney <eric.whitney@hp.com> Cc: Christoph Lameter <cl@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2009-12-15 08:53:12 -08:00
..
Kconfig	mm: allow memory hotplug and hibernation in the same kernel	2009-11-17 17:40:33 -08:00
Kconfig.debug	trivial: improve help text for mm debug config options	2009-09-21 15:14:57 +02:00
Makefile	percpu: kill legacy percpu allocator	2009-10-02 13:29:29 +09:00
backing-dev.c	flusher: Fix PF_FROZEN race	2009-12-03 13:49:43 +01:00
bootmem.c	bootmem: Add free_bootmem_late()	2009-11-10 12:31:43 +01:00
bounce.c	block: remove some includings of blktrace_api.h	2009-06-16 11:19:36 +02:00
debug-pagealloc.c	generic debug pagealloc	2009-04-01 08:59:13 -07:00
dmapool.c	dmapools: protect page_list walk in show_pools()	2009-06-30 18:56:00 -07:00
fadvise.c	readahead: move max_sane_readahead() calls into force_page_cache_readahead()	2009-06-16 19:47:28 -07:00
failslab.c	kmemtrace, mm: fix slab.h dependency problem in mm/failslab.c	2009-04-03 12:23:01 +02:00
filemap.c	kill wait_on_page_writeback_range	2009-12-10 15:02:50 +01:00
filemap_xip.c	const: mark struct vm_struct_operations	2009-09-27 11:39:25 -07:00
fremap.c	Do not account for the address space used by hugetlbfs using VM_ACCOUNT	2009-02-10 10:48:42 -08:00
highmem.c	highmem: Fix debug_kmap_atomic() to also handle KM_IRQ_PTE, KM_NMI, and KM_NMI_PTE	2009-11-10 04:15:47 +01:00
hugetlb.c	hugetlb: add per node hstate attributes	2009-12-15 08:53:12 -08:00
hwpoison-inject.c	HWPOISON: Add simple debugfs interface to inject hwpoison on arbitary PFNs	2009-09-16 11:50:17 +02:00
init-mm.c	mm: consolidate init_mm definition	2009-06-16 19:47:28 -07:00
internal.h	mm: move highest_memmap_pfn	2009-09-22 07:17:41 -07:00
kmemcheck.c	kmemcheck: add hooks for the page allocator	2009-06-15 15:48:33 +02:00
kmemleak-test.c	percpu: clean up percpu variable definitions	2009-06-24 15:13:48 +09:00
kmemleak.c	tree-wide: fix typos "aquire" -> "acquire", "cumsumed" -> "consumed"	2009-11-09 09:40:57 +01:00
ksm.c	ksm: cond_resched in unstable tree	2009-11-09 09:55:44 -08:00
maccess.c	[S390] maccess: add weak attribute to probe_kernel_write	2009-06-12 10:27:37 +02:00
madvise.c	Merge branch 'hwpoison' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6	2009-09-24 07:53:22 -07:00
memcontrol.c	tree-wide: fix assorted typos all over the place	2009-12-04 15:39:55 +01:00
memory-failure.c	tree-wide: fix assorted typos all over the place	2009-12-04 15:39:55 +01:00
memory.c	Merge branch 'hwpoison-2.6.32' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6	2009-10-29 08:20:00 -07:00
memory_hotplug.c	mm: move inc_zone_page_state(NR_ISOLATED) to just isolated place	2009-12-15 08:53:12 -08:00
mempolicy.c	hugetlb: derive huge pages nodes allowed from task mempolicy	2009-12-15 08:53:12 -08:00
mempool.c	mm: remove broken 'kzalloc' mempool	2009-09-22 07:17:35 -07:00
migrate.c	mm: move inc_zone_page_state(NR_ISOLATED) to just isolated place	2009-12-15 08:53:12 -08:00
mincore.c	[CVE-2009-0029] System call wrappers part 14	2009-01-14 14:15:24 +01:00
mlock.c	mm: m(un)lock avoid ZERO_PAGE	2009-09-22 07:17:40 -07:00
mm_init.c	mm: mminit_loglevel cannot be __meminitdata anymore	2008-08-20 15:40:30 -07:00
mmap.c	mmap: don't return ENOMEM when mapcount is temporarily exceeded in munmap()	2009-12-15 08:53:11 -08:00
mmu_context.c	mm: reduce atomic use on use_mm fast path	2009-09-22 07:17:42 -07:00
mmu_notifier.c	ksm: add mmu_notifier set_pte_at_notify()	2009-09-22 07:17:31 -07:00
mmzone.c	[ARM] Double check memmap is actually valid with a memmap has unexpected holes V2	2009-05-18 11:22:24 +01:00
mprotect.c	perf: Do the big rename: Performance Counters -> Performance Events	2009-09-21 14:28:04 +02:00
mremap.c	Take arch_mmap_check() into get_unmapped_area()	2009-12-11 06:44:58 -05:00
msync.c	[CVE-2009-0029] System call wrappers part 13	2009-01-14 14:15:23 +01:00
nommu.c	NOMMU: Don't pass NULL pointers to fput() in do_mmap_pgoff()	2009-10-31 12:11:37 -07:00
oom_kill.c	oom: dump stack and VM state when oom killer panics	2009-12-15 08:53:10 -08:00
page-writeback.c	writeback: remove unused nonblocking and congestion checks	2009-12-03 13:54:25 +01:00
page_alloc.c	tracing: Fix kmem event exports	2009-11-26 13:17:43 +01:00
page_cgroup.c	memory hotplug: alloc page from other node in memory online	2009-09-22 07:17:26 -07:00
page_io.c	mm: remove file argument from swap_readpage()	2009-06-16 19:47:44 -07:00
page_isolation.c	memory hotplug: fix page_zone() calculation in test_pages_isolated()	2008-11-06 15:41:19 -08:00
pagewalk.c	pagemap: pass mm into pagewalkers	2008-06-12 18:05:41 -07:00
percpu.c	Merge branch 'for-linus' into for-next	2009-12-08 10:02:12 +09:00
prio_tree.c	spelling fixes: mm/	2007-10-20 01:27:18 +02:00
quicklist.c	cpumask: use new-style cpumask ops in mm/quicklist.	2009-09-24 09:34:52 +09:30
readahead.c	readahead: introduce context readahead algorithm	2009-06-16 19:47:30 -07:00
rmap.c	mm/rmap.c: fix comment	2009-10-01 16:11:12 -07:00
shmem.c	const: mark struct vm_struct_operations	2009-09-27 11:39:25 -07:00
shmem_acl.c	shmfs: use 'check_acl' instead of 'permission'	2009-09-08 11:08:46 -07:00
slab.c	Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-12-14 10:13:22 -08:00
slob.c	slab: remove duplicate kmem_cache_init_late() declarations	2009-08-06 11:36:25 +03:00
slub.c	Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-12-14 10:13:22 -08:00
sparse-vmemmap.c	memory hotplug: alloc page from other node in memory online	2009-09-22 07:17:26 -07:00
sparse.c	memory hotplug: alloc page from other node in memory online	2009-09-22 07:17:26 -07:00
swap.c	mm: replace various uses of num_physpages by totalram_pages	2009-09-22 07:17:38 -07:00
swap_state.c	mm: add_to_swap_cache() does not return -EEXIST	2009-09-22 07:17:35 -07:00
swapfile.c	mm: remove incorrect swap_count() from try_to_unuse()	2009-11-02 09:44:41 -08:00
thrash.c	mm: pass mm to grab_swap_token	2009-06-23 12:50:05 -07:00
truncate.c	mm: fix comments for invalidate_inode_pages2()	2009-12-04 15:39:48 +01:00
util.c	fix a struct file leak in do_mmap_pgoff()	2009-12-11 06:44:57 -05:00
vmalloc.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu	2009-12-14 09:58:24 -08:00
vmscan.c	vmscan: order evictable rescue in LRU putback	2009-10-29 07:39:30 -07:00
vmstat.c	percpu: make percpu symbols under kernel/ and mm/ unique	2009-10-29 22:34:13 +09:00