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sched: reduce stack size requirements in kernel/sched.c 

Impact: cleanup

  * use node_to_cpumask_ptr in place of node_to_cpumask to reduce stack
    requirements in sched.c

Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Mike Travis 2008-11-25 02:35:02 +10:30 committed by Ingo Molnar
parent 943f3d0300
commit ea6f18ed5a
1 changed files with 7 additions and 6 deletions
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13
kernel/sched.c
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@ -6110,8 +6110,9 @@ static void move_task_off_dead_cpu(int dead_cpu, struct task_struct *p)
do {
/* On same node? */
mask = node_to_cpumask(cpu_to_node(dead_cpu));
cpus_and(mask, mask, p->cpus_allowed);
node_to_cpumask_ptr(pnodemask, cpu_to_node(dead_cpu));
cpus_and(mask, *pnodemask, p->cpus_allowed);
dest_cpu = any_online_cpu(mask);
/* On any allowed CPU? */
@ -7098,9 +7099,9 @@ static int cpu_to_allnodes_group(int cpu, const cpumask_t *cpu_map,
struct sched_group **sg, cpumask_t *nodemask)
{
int group;
node_to_cpumask_ptr(pnodemask, cpu_to_node(cpu));
*nodemask = node_to_cpumask(cpu_to_node(cpu));
cpus_and(*nodemask, *nodemask, *cpu_map);
cpus_and(*nodemask, *pnodemask, *cpu_map);
group = first_cpu(*nodemask);
if (sg)
@ -7150,9 +7151,9 @@ static void free_sched_groups(const cpumask_t *cpu_map, cpumask_t *nodemask)
for (i = 0; i < nr_node_ids; i++) {
struct sched_group *oldsg, *sg = sched_group_nodes[i];
node_to_cpumask_ptr(pnodemask, i);
*nodemask = node_to_cpumask(i);
cpus_and(*nodemask, *nodemask, *cpu_map);
cpus_and(*nodemask, *pnodemask, *cpu_map);
if (cpus_empty(*nodemask))
continue;