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Subject[PATCH] Allow multiple cpus in irq affinity call


The generic irq affinity code limits us to a single cpu target regardless
of what the architecture supports. If required this should be done in
the architecture specific ->set_affinity call.

With this patch ppc64 is able to select all cpus affinity again.


Signed-off-by: Anton Blanchard <>

diff -puN kernel/irq/proc.c~debug_gqirm kernel/irq/proc.c
--- gr_work/kernel/irq/proc.c~debug_gqirm 2004-11-30 19:57:04.584233473 -0600
+++ gr_work-anton/kernel/irq/proc.c 2004-11-30 19:57:13.149208938 -0600
@@ -56,8 +56,7 @@ static int irq_affinity_write_proc(struc
return -EINVAL;

irq_affinity[irq] = new_value;
- irq_desc[irq].handler->set_affinity(irq,
- cpumask_of_cpu(first_cpu(new_value)));
+ irq_desc[irq].handler->set_affinity(irq, new_value);

return full_count;
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