Commit 2530cd4f authored Aug 14, 2012 by Liu, Chuansheng Committed by Ingo Molnar Aug 22, 2012

x86/fixup_irq: Use cpu_online_mask instead of cpu_all_mask



When one CPU is going down and this CPU is the last one in irq
affinity, current code is setting cpu_all_mask as the new
affinity for that irq.

But for some systems (such as in Medfield Android mobile) the
firmware sends the interrupt to each CPU in the irq affinity
mask, averaged, and cpu_all_mask includes all potential CPUs,
i.e. offline ones as well.

So replace cpu_all_mask with cpu_online_mask.

Signed-off-by: liu chuansheng <chuansheng.liu@intel.com>
Acked-by: Yanmin Zhang <yanmin_zhang@linux.intel.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/27240C0AC20F114CBF8149A2696CBE4A137286@SHSMSX101.ccr.corp.intel.com


Signed-off-by: Ingo Molnar <mingo@kernel.org>

parent 83be4ffa

arch/x86/kernel/irq.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -270,7 +270,7 @@ void fixup_irqs(void)

		if (cpumask_any_and(affinity, cpu_online_mask) >= nr_cpu_ids) {
		break_affinity = 1;
		affinity = cpu_all_mask;
		affinity = cpu_online_mask;
		}

		chip = irq_data_get_irq_chip(data);

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