cpumask: Cleanup more uses of CPU_MASK and NODE_MASK (d366f8cb) · Commits · 戴 / test

* 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>

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);

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