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[PATCH] scheduler: NUMA aware placement of sched_group_allnodes

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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@sgi.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Christoph Lameter 2006-10-03 01:14:11 -07:00 committed by Linus Torvalds
parent 0feaece977
commit ce164428c4
1 changed files with 4 additions and 3 deletions
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7
kernel/sched.c
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@ -6349,9 +6349,10 @@ static int build_sched_domains(const cpumask_t *cpu_map)
> 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");