linux-next

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History

James Hogan 8b8b241299 metag: cpu hotplug: route_irq: preserve irq mask

The route_irq() function needs to preserve the irq mask by using the
_irqsave/irqrestore variants of raw spin lock functions instead of the
_irq variants. This is because it is called from __cpu_disable() (via
migrate_irqs()), which is called with IRQs disabled, so using the _irq
variants re-enables IRQs.

This appears to have been causing occasional hits of the
BUG_ON(!irqs_disabled()) in __irq_work_run() during CPU hotplug soak
testing:
  BUG: failure at kernel/irq_work.c:122/__irq_work_run()!

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>

2013-07-02 14:12:22 +01:00

boot

metag: tz1090: select and instantiate pinctrl-tz1090-pdc

2013-06-27 13:49:56 +01:00

configs

metag: minimal TZ1090 (Comet) SoC infrastructure

2013-06-13 12:14:07 +01:00

include

metag/traps: Mark die() as __noreturn to match the declaration.

2013-06-13 12:55:29 +01:00

kernel

metag: cpu hotplug: route_irq: preserve irq mask