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arm64: LLVMLinux: Use current_stack_pointer in save_stack_trace_tsk

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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>
Signed-off-by: Mark Charlebois <charlebm@gmail.com>
Reviewed-by: Jan-Simon Möller <dl9pf@gmx.de>
Reviewed-by: Olof Johansson <olof@lixom.net>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Behan Webster 2014-08-27 05:29:30 +01:00 committed by Will Deacon
parent 3337a10e0d
commit bb28cec4ea
1 changed files with 1 additions and 2 deletions
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3
arch/arm64/kernel/stacktrace.c
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@ -111,10 +111,9 @@ void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
frame.sp = thread_saved_sp(tsk);
frame.pc = thread_saved_pc(tsk);
} else {
register unsigned long current_sp asm("sp");
data.no_sched_functions = 0;
frame.fp = (unsigned long)__builtin_frame_address(0);
frame.sp = current_sp;
frame.sp = current_stack_pointer;
frame.pc = (unsigned long)save_stack_trace_tsk;
}