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nodemask: use new node_to_cpumask_ptr function

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* 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>
This commit is contained in:
Mike Travis
2008-04-04 18:11:10 -07:00
committed by Ingo Molnar
parent b53e921ba1
commit c5f59f0833
6 changed files with 42 additions and 39 deletions
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18
mm/vmscan.c
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@ -1647,11 +1647,10 @@ static int kswapd(void *p)
struct reclaim_state reclaim_state = {
.reclaimed_slab = 0,
};
cpumask_t cpumask;
node_to_cpumask_ptr(cpumask, pgdat->node_id);
cpumask = node_to_cpumask(pgdat->node_id);
if (!cpus_empty(cpumask))
set_cpus_allowed(tsk, cpumask);
if (!cpus_empty(*cpumask))
set_cpus_allowed_ptr(tsk, cpumask);
current->reclaim_state = &reclaim_state;
/*
@ -1880,17 +1879,16 @@ out:
static int __devinit cpu_callback(struct notifier_block *nfb,
unsigned long action, void *hcpu)
{
pg_data_t *pgdat;
cpumask_t mask;
int nid;
if (action == CPU_ONLINE || action == CPU_ONLINE_FROZEN) {
for_each_node_state(nid, N_HIGH_MEMORY) {
pgdat = NODE_DATA(nid);
mask = node_to_cpumask(pgdat->node_id);
if (any_online_cpu(mask) != NR_CPUS)
pg_data_t *pgdat = NODE_DATA(nid);
node_to_cpumask_ptr(mask, pgdat->node_id);
if (any_online_cpu(*mask) < nr_cpu_ids)
/* One of our CPUs online: restore mask */
set_cpus_allowed(pgdat->kswapd, mask);
set_cpus_allowed_ptr(pgdat->kswapd, mask);
}
}
return NOTIFY_OK;