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From: Yinghai Lu on 24 Jun 2010 16:50 On Thu, Jun 24, 2010 at 12:34 PM, Jack Steiner <steiner(a)sgi.com> wrote: > Try to assign irqs to cpus on the correct node & fall back to global > assignment only if node-local fails. This reduces the chances of > using all of the interrupt vectors of a single cpu. > > Signed-off-by: Jack Steiner <steiner(a)sgi.com> > > > --- > �arch/x86/kernel/apic/io_apic.c | � �4 +++- > �1 file changed, 3 insertions(+), 1 deletion(-) > > Index: linux/arch/x86/kernel/apic/io_apic.c > =================================================================== > --- linux.orig/arch/x86/kernel/apic/io_apic.c � 2010-06-24 12:58:11.658933610 -0500 > +++ linux/arch/x86/kernel/apic/io_apic.c � � � �2010-06-24 13:56:26.734380290 -0500 > @@ -3259,7 +3259,9 @@ unsigned int create_irq_nr(unsigned int > � � � � � � � �desc_new = move_irq_desc(desc_new, node); > � � � � � � � �cfg_new = desc_new->chip_data; > > - � � � � � � � if (__assign_irq_vector(new, cfg_new, apic->target_cpus()) == 0) > + � � � � � � � if (node >= 0 && __assign_irq_vector(new, cfg_new, node_to_cpumask_map[node]) == 0) > + � � � � � � � � � � � irq = new; > + � � � � � � � else if (__assign_irq_vector(new, cfg_new, apic->target_cpus()) == 0) > � � � � � � � � � � � �irq = new; > � � � � � � � �break; > � � � �} how about update apic::target_cpus() to take node? YH -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |