The patch titled
scheduler: NUMA aware placement of sched_group_allnodes
has been added to the -mm tree. Its filename is
scheduler-numa-aware-placement-of-sched_group_allnodes.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: scheduler: NUMA aware placement of sched_group_allnodes
From: Christoph Lameter <clameter@xxxxxxx>
When the per cpu sched domains are build then they also need to be placed
on the node where the cpu resides otherwise we will have frequent off node
accesses which will slow down the system.
Signed-off-by: Christoph Lameter <clameter@xxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Nick Piggin <nickpiggin@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
kernel/sched.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff -puN kernel/sched.c~scheduler-numa-aware-placement-of-sched_group_allnodes kernel/sched.c
--- a/kernel/sched.c~scheduler-numa-aware-placement-of-sched_group_allnodes
+++ a/kernel/sched.c
@@ -6224,9 +6224,10 @@ static int build_sched_domains(const cpu
> SD_NODES_PER_DOMAIN*cpus_weight(nodemask)) {
if (!sched_group_allnodes) {
sched_group_allnodes
- = kmalloc(sizeof(struct sched_group)
- * MAX_NUMNODES,
- GFP_KERNEL);
+ = kmalloc_node(sizeof(struct sched_group)
+ * MAX_NUMNODES,
+ GFP_KERNEL,
+ cpu_to_node(i));
if (!sched_group_allnodes) {
printk(KERN_WARNING
"Can not alloc allnodes sched group\n");
_
Patches currently in -mm which might be from clameter@xxxxxxx are
fix-longstanding-load-balancing-bug-in-the-scheduler.patch
cleanup-radix_tree_derefreplace_slot-calling-conventions-warning-fixes.patch
reduce-max_nr_zones-remove-two-strange-uses-of-max_nr_zones.patch
reduce-max_nr_zones-fix-max_nr_zones-array-initializations.patch
reduce-max_nr_zones-make-display-of-highmem-counters-conditional-on-config_highmem.patch
reduce-max_nr_zones-make-display-of-highmem-counters-conditional-on-config_highmem-tidy.patch
reduce-max_nr_zones-move-highmem-counters-into-highmemc-h.patch
reduce-max_nr_zones-move-highmem-counters-into-highmemc-h-fix.patch
reduce-max_nr_zones-page-allocator-zone_highmem-cleanup.patch
reduce-max_nr_zones-use-enum-to-define-zones-reformat-and-comment.patch
reduce-max_nr_zones-use-enum-to-define-zones-reformat-and-comment-cleanup.patch
reduce-max_nr_zones-make-zone_dma32-optional.patch
reduce-max_nr_zones-make-zone_highmem-optional.patch
reduce-max_nr_zones-make-zone_highmem-optional-fix.patch
reduce-max_nr_zones-make-zone_highmem-optional-fix-fix.patch
reduce-max_nr_zones-remove-display-of-counters-for-unconfigured-zones.patch
reduce-max_nr_zones-fix-i386-srat-check-for-max_nr_zones.patch
mempolicies-fix-policy_zone-check.patch
apply-type-enum-zone_type.patch
apply-type-enum-zone_type-fix.patch
linearly-index-zone-node_zonelists.patch
slab-respect-architecture-and-caller-mandated-alignment.patch
slab-optimize-kmalloc_node-the-same-way-as-kmalloc.patch
slab-optimize-kmalloc_node-the-same-way-as-kmalloc-fix.patch
slab-extract-__kmem_cache_destroy-from-kmem_cache_destroy.patch
slab-do-not-panic-when-alloc_kmemlist-fails-and-slab-is-up.patch
add-__gfp_thisnode-to-avoid-fallback-to-other-nodes-and-ignore.patch
add-__gfp_thisnode-to-avoid-fallback-to-other-nodes-and-ignore-fix.patch
sys_move_pages-do-not-fall-back-to-other-nodes.patch
guarantee-that-the-uncached-allocator-gets-pages-on-the-correct.patch
cleanup-add-zone-pointer-to-get_page_from_freelist.patch
profiling-require-buffer-allocation-on-the-correct-node.patch
define-easier-to-handle-gfp_thisnode.patch
optimize-free_one_page.patch
do-not-check-unpopulated-zones-for-draining-and-counter.patch
extract-the-allocpercpu-functions-from-the-slab-allocator.patch
replace-min_unmapped_ratio-by-min_unmapped_pages-in-struct-zone.patch
zvc-support-nr_slab_reclaimable--nr_slab_unreclaimable.patch
zone_reclaim-dynamic-slab-reclaim.patch
zone_reclaim-dynamic-slab-reclaim-tidy.patch
zone-reclaim-with-slab-avoid-unecessary-off-node-allocations.patch
hugepages-use-page_to_nid-rather-than-traversing-zone-pointers.patch
numa-add-zone_to_nid-function.patch
numa-add-zone_to_nid-function-update.patch
slab-fix-kmalloc_node-applying-memory-policies-if-nodeid-==-numa_node_id.patch
add-numa_build-definition-in-kernelh-to-avoid-ifdef.patch
disable-gfp_thisnode-in-the-non-numa-case.patch
gfp_thisnode-for-the-slab-allocator-v2.patch
add-node-to-zone-for-the-numa-case.patch
x86-implement-always-locked-bit-ops-for-memory-shared-with-an-smp-hypervisor.patch
scheduler-numa-aware-placement-of-sched_group_allnodes.patch
zvc-support-nr_slab_reclaimable--nr_slab_unreclaimable-swap_prefetch.patch
reduce-max_nr_zones-swap_prefetch-remove-incorrect-use-of-zone_highmem.patch
numa-add-zone_to_nid-function-swap_prefetch.patch
readahead-state-based-method-aging-accounting-apply-type-enum-zone_type-readahead.patch
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