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authorMike Travis <travis@sgi.com>2008-04-04 18:11:10 -0700
committerIngo Molnar <mingo@elte.hu>2008-04-19 19:44:59 +0200
commitc5f59f0833df945eef7ff35f3dc6ba61c5f293dd (patch)
tree32c1a94847d0154051c79011212d401462723d55 /kernel/sched.c
parentb53e921ba1cff8453dc9a87a84052fa12d5b30bd (diff)
downloadop-kernel-dev-c5f59f0833df945eef7ff35f3dc6ba61c5f293dd.zip
op-kernel-dev-c5f59f0833df945eef7ff35f3dc6ba61c5f293dd.tar.gz
nodemask: use new node_to_cpumask_ptr function
* Use new node_to_cpumask_ptr. This creates a pointer to the cpumask for a given node. This definition is in mm patch: asm-generic-add-node_to_cpumask_ptr-macro.patch * Use new set_cpus_allowed_ptr function. Depends on: [mm-patch]: asm-generic-add-node_to_cpumask_ptr-macro.patch [sched-devel]: sched: add new set_cpus_allowed_ptr function [x86/latest]: x86: add cpus_scnprintf function Cc: Greg Kroah-Hartman <gregkh@suse.de> Cc: Greg Banks <gnb@melbourne.sgi.com> Cc: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/sched.c')
-rw-r--r--kernel/sched.c29
1 files changed, 14 insertions, 15 deletions
diff --git a/kernel/sched.c b/kernel/sched.c
index 1a82523..9f7980f 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -6448,7 +6448,7 @@ init_sched_build_groups(cpumask_t span, const cpumask_t *cpu_map,
*
* Should use nodemask_t.
*/
-static int find_next_best_node(int node, unsigned long *used_nodes)
+static int find_next_best_node(int node, nodemask_t *used_nodes)
{
int i, n, val, min_val, best_node = 0;
@@ -6462,7 +6462,7 @@ static int find_next_best_node(int node, unsigned long *used_nodes)
continue;
/* Skip already used nodes */
- if (test_bit(n, used_nodes))
+ if (node_isset(n, *used_nodes))
continue;
/* Simple min distance search */
@@ -6474,14 +6474,13 @@ static int find_next_best_node(int node, unsigned long *used_nodes)
}
}
- set_bit(best_node, used_nodes);
+ node_set(best_node, *used_nodes);
return best_node;
}
/**
* sched_domain_node_span - get a cpumask for a node's sched_domain
* @node: node whose cpumask we're constructing
- * @size: number of nodes to include in this span
*
* Given a node, construct a good cpumask for its sched_domain to span. It
* should be one that prevents unnecessary balancing, but also spreads tasks
@@ -6489,22 +6488,22 @@ static int find_next_best_node(int node, unsigned long *used_nodes)
*/
static cpumask_t sched_domain_node_span(int node)
{
- DECLARE_BITMAP(used_nodes, MAX_NUMNODES);
- cpumask_t span, nodemask;
+ nodemask_t used_nodes;
+ cpumask_t span;
+ node_to_cpumask_ptr(nodemask, node);
int i;
cpus_clear(span);
- bitmap_zero(used_nodes, MAX_NUMNODES);
+ nodes_clear(used_nodes);
- nodemask = node_to_cpumask(node);
- cpus_or(span, span, nodemask);
- set_bit(node, used_nodes);
+ cpus_or(span, span, *nodemask);
+ node_set(node, used_nodes);
for (i = 1; i < SD_NODES_PER_DOMAIN; i++) {
- int next_node = find_next_best_node(node, used_nodes);
+ int next_node = find_next_best_node(node, &used_nodes);
- nodemask = node_to_cpumask(next_node);
- cpus_or(span, span, nodemask);
+ node_to_cpumask_ptr_next(nodemask, next_node);
+ cpus_or(span, span, *nodemask);
}
return span;
@@ -6901,6 +6900,7 @@ static int build_sched_domains(const cpumask_t *cpu_map)
for (j = 0; j < MAX_NUMNODES; j++) {
cpumask_t tmp, notcovered;
int n = (i + j) % MAX_NUMNODES;
+ node_to_cpumask_ptr(pnodemask, n);
cpus_complement(notcovered, covered);
cpus_and(tmp, notcovered, *cpu_map);
@@ -6908,8 +6908,7 @@ static int build_sched_domains(const cpumask_t *cpu_map)
if (cpus_empty(tmp))
break;
- nodemask = node_to_cpumask(n);
- cpus_and(tmp, tmp, nodemask);
+ cpus_and(tmp, tmp, *pnodemask);
if (cpus_empty(tmp))
continue;
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