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Commit 0dd945ff authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

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: default avatarThomas 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
parent 137221df

kernel/irq/cpuhotplug.c

+4 −8
Original line number Diff line number Diff line
@@ -59,11 +59,8 @@ static bool migrate_one_irq(struct irq_desc *desc) 
 */

void irq_migrate_all_off_this_cpu(void)

{

	unsigned int irq;

	struct irq_desc *desc;

	unsigned long flags;



	local_irq_save(flags);

	unsigned int irq;



	for_each_active_irq(irq) {

		bool affinity_broken;
@@ -73,10 +70,9 @@ void irq_migrate_all_off_this_cpu(void) 
		affinity_broken = migrate_one_irq(desc);

		raw_spin_unlock(&desc->lock);



		if (affinity_broken)

			pr_warn_ratelimited("IRQ%u no longer affine to CPU%u\n",

		if (affinity_broken) {

			pr_warn_ratelimited("IRQ %u: no longer affine to CPU%u\n",

					    irq, smp_processor_id());

		}



	local_irq_restore(flags);

	}

}