genirq/cpuhotplug: Remove irq disabling logic
This is called from stop_machine() with interrupts disabled. No point in disabling them some more. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Jens Axboe <axboe@kernel.dk> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Keith Busch <keith.busch@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Christoph Hellwig <hch@lst.de> Link: http://lkml.kernel.org/r/20170619235445.198042748@linutronix.de
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@ -59,11 +59,8 @@ static bool migrate_one_irq(struct irq_desc *desc)
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*/
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*/
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void irq_migrate_all_off_this_cpu(void)
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void irq_migrate_all_off_this_cpu(void)
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{
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{
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unsigned int irq;
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struct irq_desc *desc;
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struct irq_desc *desc;
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unsigned long flags;
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unsigned int irq;
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local_irq_save(flags);
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for_each_active_irq(irq) {
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for_each_active_irq(irq) {
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bool affinity_broken;
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bool affinity_broken;
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@ -73,10 +70,9 @@ void irq_migrate_all_off_this_cpu(void)
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affinity_broken = migrate_one_irq(desc);
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affinity_broken = migrate_one_irq(desc);
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raw_spin_unlock(&desc->lock);
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raw_spin_unlock(&desc->lock);
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if (affinity_broken)
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if (affinity_broken) {
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pr_warn_ratelimited("IRQ%u no longer affine to CPU%u\n",
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pr_warn_ratelimited("IRQ %u: no longer affine to CPU%u\n",
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irq, smp_processor_id());
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irq, smp_processor_id());
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}
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}
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}
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local_irq_restore(flags);
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}
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}
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