Displaying 5 results from an estimated 5 matches for "num_online_nod".
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num_online_nodes
2007 Oct 19
4
[PATCH] nr_cpus calculation problem due to incorrect sockets_per_node
...en cuts off recognized
CPUs at 32, the machine appears to have 16 CPUs on the first and second
nodes and none on the remaining nodes. Given this asymmetry, the
calculation of sockets_per_node (which is later used to calculate
nr_cpus) is incorrect:
pi->sockets_per_node = num_online_cpus() /(num_online_nodes() *
pi->cores_per_socket * pi->threads_per_core);
The most straightforward solution is to remove sockets_per_node, and
instead determine nr_cpus directly from num_online_cpus.
This patch has been tested on x86_64 NUMA machines.
--
Elizabeth Kon (Beth)
IBM Linux Technology Center
Open...
2006 Sep 29
0
[PATCH 2/6] xen: add per-node bucks to page allocator
...tiguous pages. */
-struct page_info *alloc_heap_pages(unsigned int zone, unsigned int order)
-{
- int i;
+struct page_info *alloc_heap_pages(unsigned int zone, unsigned int cpu,
+ unsigned int order)
+{
+ unsigned int i,j, node = cpu_to_node(cpu), num_nodes = num_online_nodes();
+ unsigned int request = (1UL << order);
struct page_info *pg;
+ ASSERT(node >= 0);
+ ASSERT(node < num_nodes);
ASSERT(zone < NR_ZONES);
if ( unlikely(order > MAX_ORDER) )
@@ -302,29 +336,46 @@ struct page_info *alloc_heap_pages(unsig
spin_l...
2007 Apr 18
8
[patch 0/6] i386 gdt and percpu cleanups
Hi Andi,
This is a series of patches based on your latest queue (as of the
other day, at least).
It includes:
- the most recent patch to compute the appropriate amount of percpu
space to allocate, using a separate reservation for modules where
needed.
- make the percpu sections page-aligned, so that percpu variables can
be page aligned if needed (which is used by gdt_page)
-
2007 Apr 18
8
[patch 0/6] i386 gdt and percpu cleanups
Hi Andi,
This is a series of patches based on your latest queue (as of the
other day, at least).
It includes:
- the most recent patch to compute the appropriate amount of percpu
space to allocate, using a separate reservation for modules where
needed.
- make the percpu sections page-aligned, so that percpu variables can
be page aligned if needed (which is used by gdt_page)
-
2006 Sep 29
4
[PATCH 4/6] xen: export NUMA topology in physinfo hcall
...if ( copy_to_guest_offset(sysctl->u.physinfo.memory_chunks, i,
+ &(node_data[i]), 1) ) {
+ ret = -EFAULT;
+ break;
+ }
+ }
+
+ /* set number of notes */
+ pi->nr_nodes = num_online_nodes();
+
+ /* fetch node_to_cpu pointer from guest */
+ get_xen_guest_handle(map, sysctl->u.physinfo.node_to_cpu);
+
+ /* if set, fill out node_to_cpu array */
+ if ( map != NULL )
+ {
+ /* copy cpu to node mapping to domU */
+ /* converting...