• Russell King's avatar
    ARM: fix backtrace · 24c66dfd
    Russell King authored
    Recent kernels have changed their behaviour to be more inconsistent
    when handling printk continuations.  With todays kernels, the output
    looks sane on the console, but dmesg splits individual printk()s which
    do not have the KERN_CONT prefix into separate lines.
    
    Since the assembly code is not trivial to add the KERN_CONT, and we
    ideally want to avoid using KERN_CONT (as multiple printk()s can race
    between different threads), convert the assembly dumping the register
    values to C code, and have the C code build the output a line at a
    time before dumping to the console.
    
    This avoids the KERN_CONT issue, and also avoids situations where the
    output is intermixed with other console activity.
    Signed-off-by: default avatarRussell King <rmk+kernel@armlinux.org.uk>
    24c66dfd
traps.c 20 KB