forked from luck/tmp_suning_uos_patched
ARM: 8172/1: Use current_stack_pointer in save_stack_trace_tsk
Use the global current_stack_pointer to get the value of the stack pointer. This change supports being able to compile the kernel with both gcc and clang. Signed-off-by: Behan Webster <behanw@converseincode.com> Reviewed-by: Mark Charlebois <charlebm@gmail.com> Reviewed-by: Jan-Simon Möller <dl9pf@gmx.de> Acked-by: Will Deacon <will.deacon@arm.com> Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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@ -134,12 +134,10 @@ static noinline void __save_stack_trace(struct task_struct *tsk,
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frame.pc = thread_saved_pc(tsk);
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#endif
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} else {
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register unsigned long current_sp asm ("sp");
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/* We don't want this function nor the caller */
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data.skip += 2;
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frame.fp = (unsigned long)__builtin_frame_address(0);
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frame.sp = current_sp;
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frame.sp = current_stack_pointer;
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frame.lr = (unsigned long)__builtin_return_address(0);
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frame.pc = (unsigned long)__save_stack_trace;
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}
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