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Commit d366f8cb authored by Mike Travis's avatar Mike Travis Committed by Ingo Molnar
Browse files

cpumask: Cleanup more uses of CPU_MASK and NODE_MASK 



 *  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: default avatarMike Travis <travis@sgi.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent f46bdf2d

arch/x86/kernel/io_apic_64.c

+1 −1
Original line number Diff line number Diff line
@@ -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)

kernel/irq/chip.c

+1 −1
Original line number Diff line number Diff line
@@ -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);

}

mm/allocpercpu.c

+2 −1
Original line number Diff line number Diff line
@@ -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);