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x86: Eliminate pointless adjustment attempts in fixup_irqs()
Not only when an IRQ's affinity equals cpu_online_mask is there no need to actually try to adjust the affinity, but also when it's a subset thereof. This particularly avoids adjustment attempts during system shutdown to any IRQs bound to CPU#0. Signed-off-by: Jan Beulich <jbeulich@novell.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Gary Hade <garyhade@us.ibm.com> LKML-Reference: <4D5D52C2020000780003272C@vpn.id2.novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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@ -310,7 +310,7 @@ void fixup_irqs(void)
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data = &desc->irq_data;
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affinity = data->affinity;
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if (!irq_has_action(irq) ||
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cpumask_equal(affinity, cpu_online_mask)) {
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cpumask_subset(affinity, cpu_online_mask)) {
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raw_spin_unlock(&desc->lock);
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continue;
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}
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