[PATCH v4 1/2] ARM: avoid tracers in soft_restart
Russell King - ARM Linux
linux at arm.linux.org.uk
Wed Feb 26 18:37:44 EST 2014
On Wed, Feb 26, 2014 at 11:10:56AM -0800, Sebastian Capella wrote:
> Use of tracers in local_irq_disable is causes recursive aborts when
> called with irqs disabled and using a temporary stack (hibernation).
> Replace local_irq_disable with raw_local_irq_disable instead to
> avoid tracers.
> Signed-off-by: Sebastian Capella <sebastian.capella at linaro.org>
> Cc: Russell King <linux at arm.linux.org.uk>
> Cc: Andrew Morton <akpm at linux-foundation.org>
> Cc: Thomas Gleixner <tglx at linutronix.de>
> Cc: Will Deacon <will.deacon at arm.com>
> Cc: Robin Holt <robin.m.holt at gmail.com>
> Cc: Lorenzo Pieralisi <lorenzo.pieralisi at arm.com>
> arch/arm/kernel/process.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
> diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
> index 92f7b15..f58b723 100644
> --- a/arch/arm/kernel/process.c
> +++ b/arch/arm/kernel/process.c
> @@ -100,7 +100,7 @@ void soft_restart(unsigned long addr)
> u64 *stack = soft_restart_stack + ARRAY_SIZE(soft_restart_stack);
> /* Disable interrupts first */
> - local_irq_disable();
> + raw_local_irq_disable();
Great, I'm happy with this now. I assume that the plan is to submit this
to my patch system when everyone's given their fill of acks?
FTTC broadband for 0.8mile line: now at 9.7Mbps down 460kbps up... slowly
improving, and getting towards what was expected from it.
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