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authorholt@sgi.com <holt@sgi.com>2008-04-03 15:17:13 -0500
committerTony Luck <tony.luck@intel.com>2008-04-08 13:51:35 -0700
commit2c6e6db41f01b6b4eb98809350827c9678996698 (patch)
tree00438344c0ad599c1301db2abe32a4c2ee89b607 /arch/ia64/mm/numa.c
parent41bd26d67c41e325c6b9e56aadfe9dad8af9a565 (diff)
downloadlinux-2.6.38-lt-ux500-2c6e6db41f01b6b4eb98809350827c9678996698.tar.gz
[IA64] Minimize per_cpu reservations.
This attached patch significantly shrinks boot memory allocation on ia64. It does this by not allocating per_cpu areas for cpus that can never exist. In the case where acpi does not have any numa node description of the cpus, I defaulted to assigning the first 32 round-robin on the known nodes.. For the !CONFIG_ACPI I used for_each_possible_cpu(). Signed-off-by: Robin Holt <holt@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/ia64/mm/numa.c')
-rw-r--r--arch/ia64/mm/numa.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/ia64/mm/numa.c b/arch/ia64/mm/numa.c
index 7807fc5c042..b73bf1838e5 100644
--- a/arch/ia64/mm/numa.c
+++ b/arch/ia64/mm/numa.c
@@ -27,7 +27,9 @@
*/
int num_node_memblks;
struct node_memblk_s node_memblk[NR_NODE_MEMBLKS];
-struct node_cpuid_s node_cpuid[NR_CPUS];
+struct node_cpuid_s node_cpuid[NR_CPUS] =
+ { [0 ... NR_CPUS-1] = { .phys_id = 0, .nid = NUMA_NO_NODE } };
+
/*
* This is a matrix with "distances" between nodes, they should be
* proportional to the memory access latency ratios.