Mike Travis
2009-Jan-07 19:58 UTC
[PATCH 1/5] cpumask: update irq_desc to use cpumask_var_t
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Yinghai Lu
2009-Jan-07 20:27 UTC
[PATCH 1/5] cpumask: update irq_desc to use cpumask_var_t
On Wed, Jan 7, 2009 at 11:58 AM, Mike Travis <travis at sgi.com> wrote: | --- linux-2.6-for-ingo.orig/kernel/irq/numa_migrate.c | +++ linux-2.6-for-ingo/kernel/irq/numa_migrate.c | @@ -46,6 +46,7 @@ static void init_copy_one_irq_desc(int i | desc->cpu = cpu; | lockdep_set_class(&desc->lock, &irq_desc_lock_class); | init_copy_kstat_irqs(old_desc, desc, cpu, nr_cpu_ids); |+ init_copy_desc_masks(old_desc, desc); | arch_init_copy_chip_data(old_desc, desc, cpu); | } | |@@ -76,11 +77,20 @@ static struct irq_desc *__real_move_irq_ | node = cpu_to_node(cpu); | desc = kzalloc_node(sizeof(*desc), GFP_ATOMIC, node); | if (!desc) { |- printk(KERN_ERR "irq %d: can not get new irq_desc for migration.\n", irq); |+ printk(KERN_ERR "irq %d: can not get new irq_desc " |+ "for migration.\n", irq); | /* still use old one */ | desc = old_desc; | goto out_unlock; | } |+ if (!init_alloc_desc_masks(desc, node, false)) { |+ printk(KERN_ERR "irq %d: can not get new irq_desc cpumask " |+ "for migration.\n", irq); |+ /* still use old one */ |+ kfree(desc); |+ desc = old_desc; |+ goto out_unlock; |+ } | init_copy_one_irq_desc(irq, old_desc, desc, cpu); desc new mask_var (allocated) aka the pointer is overwritten here... you may need to calling move init_alloc_desc_masks() into init_copy_one_irq_desc() | irq_desc_ptrs[irq] = desc; YH
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