[ARM] 5559/1: Limit the stack unwinding caused by a kthread exit

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When a kthread function returns, it branches to do_exit(). However, the
unwinding information isn't valid anymore and any stack trace caused by
do_exit() may be incorrect. This patch adds a kernel_thread_exit()
function and annotated with '.cantunwind' so that the unwinder stops
when reaching it.

Tested-by: Tony Lindgren <tony@atomide.com>

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

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Catalin Marinas 2009-06-19 16:43:08 +01:00 • committed by Russell King

parent c894ed6956

commit feb97c3644

1 changed files with 18 additions and 1 deletions

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arch/arm/kernel/process.c

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