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From: Sebastian Capella <sebastian.capella@linaro.org>
To: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
	linaro-kernel@lists.linaro.org,
	linux-arm-kernel@lists.infradead.org
Cc: Sebastian Capella <sebastian.capella@linaro.org>,
	Russell King <linux@arm.linux.org.uk>,
	Andrew Morton <akpm@linux-foundation.org>,
	Will Deacon <will.deacon@arm.com>, Robin Holt <holt@sgi.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Konstantin Khlebnikov <k.khlebnikov@samsung.com>,
	Steven Capper <steve.capper@linaro.org>,
	Stephen Warren <swarren@nvidia.com>, Tejun Heo <tj@kernel.org>
Subject: [PATCH v9 1/2] ARM: avoid tracers in soft_restart
Date: Tue, 18 Mar 2014 14:40:57 -0700	[thread overview]
Message-ID: <1395178858-27343-2-git-send-email-sebastian.capella@linaro.org> (raw)
In-Reply-To: <1395178858-27343-1-git-send-email-sebastian.capella@linaro.org>

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@linaro.org>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Robin Holt <holt@sgi.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Konstantin Khlebnikov <k.khlebnikov@samsung.com>
Cc: Steven Capper <steve.capper@linaro.org>
Cc: Stephen Warren <swarren@nvidia.com>
Cc: Tejun Heo <tj@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();
 	local_fiq_disable();
 
 	/* Disable the L2 if we're the last man standing. */
-- 
1.7.9.5


WARNING: multiple messages have this Message-ID (diff)
From: sebastian.capella@linaro.org (Sebastian Capella)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v9 1/2] ARM: avoid tracers in soft_restart
Date: Tue, 18 Mar 2014 14:40:57 -0700	[thread overview]
Message-ID: <1395178858-27343-2-git-send-email-sebastian.capella@linaro.org> (raw)
In-Reply-To: <1395178858-27343-1-git-send-email-sebastian.capella@linaro.org>

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@linaro.org>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Robin Holt <holt@sgi.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Konstantin Khlebnikov <k.khlebnikov@samsung.com>
Cc: Steven Capper <steve.capper@linaro.org>
Cc: Stephen Warren <swarren@nvidia.com>
Cc: Tejun Heo <tj@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();
 	local_fiq_disable();
 
 	/* Disable the L2 if we're the last man standing. */
-- 
1.7.9.5

  reply	other threads:[~2014-03-18 21:41 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-03-18 21:40 [PATCH v9 0/2] hibernation support on ARM Sebastian Capella
2014-03-18 21:40 ` Sebastian Capella
2014-03-18 21:40 ` Sebastian Capella [this message]
2014-03-18 21:40   ` [PATCH v9 1/2] ARM: avoid tracers in soft_restart Sebastian Capella
2014-04-14 10:53   ` Will Deacon
2014-04-14 10:53     ` Will Deacon
2014-04-14 10:53     ` Will Deacon
2014-04-14 22:37     ` Sebastian Capella
2014-04-14 22:37       ` Sebastian Capella
2014-04-14 22:37       ` Sebastian Capella
2014-03-18 21:40 ` [PATCH v9 2/2] ARM hibernation / suspend-to-disk Sebastian Capella
2014-03-18 21:40   ` Sebastian Capella

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