• Guo Ren's avatar
    csky: Fixup calltrace panic · 18c07d23
    Guo Ren authored
    The implementation of show_stack will panic with wrong fp:
    
    addr    = *fp++;
    
    because the fp isn't checked properly.
    
    The current implementations of show_stack, wchan and stack_trace
    haven't been designed properly, so just deprecate them.
    
    This patch is a reference to riscv's way, all codes are modified from
    arm's. The patch is passed with:
    
     - cat /proc/<pid>/stack
     - cat /proc/<pid>/wchan
     - echo c > /proc/sysrq-trigger
    Signed-off-by: default avatarGuo Ren <guoren@linux.alibaba.com>
    18c07d23
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