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From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= <u.kleine-koenig@pengutronix.de>
Date: Wed, 14 Dec 2011 11:03:48 +0100
Subject: [PATCH] HACK! make stack dumps provoked by BUG a bit more helpful
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
the right fix would be to continue unwinding at the end when process is
in handler mode
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
arch/arm/kernel/process.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index 94f6b05..541843b 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -304,11 +304,17 @@ void __show_regs(struct pt_regs *regs)
#endif
}
+#include <asm/unwind.h>
+
void show_regs(struct pt_regs * regs)
{
printk("\n");
__show_regs(regs);
+#ifdef CONFIG_CPU_V7M
+ unwind_backtrace(regs, current);
+#else
dump_stack();
+#endif
}
ATOMIC_NOTIFIER_HEAD(thread_notify_head);
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