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powerpc: Silence xics_migrate_irqs_away() during cpu offline

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All IRQs are migrated away from a CPU that is being offlined so the
following messages suggest a problem when the system is behaving as
designed:

IRQ 262 affinity broken off cpu 1
IRQ 17 affinity broken off cpu 0
IRQ 18 affinity broken off cpu 0
IRQ 19 affinity broken off cpu 0
IRQ 256 affinity broken off cpu 0
IRQ 261 affinity broken off cpu 0
IRQ 262 affinity broken off cpu 0

Don't print these messages when the CPU is not online.

Signed-off-by: Darren Hart <[email protected]>
Acked-by: Will Schmidt <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Nathan Fontenot <[email protected]>
Cc: Robert Jennings <[email protected]>
Cc: Brian King <[email protected]>
Signed-off-by: Benjamin Herrenschmidt <[email protected]>
This commit is contained in:
Signed-off-by: Darren Hart 2010-08-04 18:28:35 +00:00 • committed by Benjamin Herrenschmidt
commit 1afb56cf97
1 changed files with 4 additions and 2 deletions
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6
arch/powerpc/platforms/pseries/xics.c
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@ -928,8 +928,10 @@ void xics_migrate_irqs_away(void)
if (xics_status[0] != hw_cpu)
goto unlock;
printk(KERN_WARNING "IRQ %u affinity broken off cpu %u\n",
virq, cpu);
/* This is expected during cpu offline. */
if (cpu_online(cpu))
printk(KERN_WARNING "IRQ %u affinity broken off cpu %u\n",
virq, cpu);
/* Reset affinity to all cpus */
cpumask_setall(irq_to_desc(virq)->affinity);