[PATCH v9 1/2] ARM: avoid tracers in soft_restart

Sebastian Capella sebastian.capella at linaro.org
Tue Mar 18 17:40:57 EDT 2014

Use of tracers in local_irq_disable is causes abort loops when called
with irqs disabled using a temporary stack.  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: Will Deacon <will.deacon at arm.com>
Cc: Robin Holt <holt at sgi.com>
Cc: Thomas Gleixner <tglx at linutronix.de>
Cc: Konstantin Khlebnikov <k.khlebnikov at samsung.com>
Cc: Steven Capper <steve.capper at linaro.org>
Cc: Stephen Warren <swarren at nvidia.com>
Cc: Tejun Heo <tj at kernel.org>
 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();
 	/* Disable the L2 if we're the last man standing. */

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