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cpumask: Cleanup more uses of CPU_MASK and NODE_MASK

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*  Replace usages of CPU_MASK_NONE, CPU_MASK_ALL, NODE_MASK_NONE,
    NODE_MASK_ALL to reduce stack requirements for large NR_CPUS
    and MAXNODES counts.

 *  In some cases, the cpumask variable was initialized but then overwritten
    with another value.  This is the case for changes like this:

    -       cpumask_t oldmask = CPU_MASK_ALL;
    +       cpumask_t oldmask;

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 18:11:12 -07:00 committed by Ingo Molnar
parent f46bdf2db2
commit d366f8cbc1
3 changed files with 4 additions and 3 deletions
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2
arch/x86/kernel/io_apic_64.c
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@ -785,7 +785,7 @@ static void __clear_irq_vector(int irq)
per_cpu(vector_irq, cpu)[vector] = -1;
cfg->vector = 0;
cfg->domain = CPU_MASK_NONE;
cpus_clear(cfg->domain);
}
void __setup_vector_irq(int cpu)

2
kernel/irq/chip.c
View file

@ -47,7 +47,7 @@ void dynamic_irq_init(unsigned int irq)
desc->irq_count = 0;
desc->irqs_unhandled = 0;
#ifdef CONFIG_SMP
desc->affinity = CPU_MASK_ALL;
cpus_setall(desc->affinity);
#endif
spin_unlock_irqrestore(&desc->lock, flags);
}

3
mm/allocpercpu.c
View file

@ -82,9 +82,10 @@ EXPORT_SYMBOL_GPL(percpu_populate);
int __percpu_populate_mask(void *__pdata, size_t size, gfp_t gfp,
cpumask_t *mask)
{
cpumask_t populated = CPU_MASK_NONE;
cpumask_t populated;
int cpu;
cpus_clear(populated);
for_each_cpu_mask(cpu, *mask)
if (unlikely(!percpu_populate(__pdata, size, gfp, cpu))) {
__percpu_depopulate_mask(__pdata, &populated);