• Chris Metcalf's avatar
    arch/tile: support signal "exception-trace" hook · 571d76ac
    Chris Metcalf authored
    This change adds support for /proc/sys/debug/exception-trace to tile.
    Like x86 and sparc, by default it is set to "1", generating a one-line
    printk whenever a user process crashes.  By setting it to "2", we get
    a much more complete userspace diagnostic at crash time, including
    a user-space backtrace, register dump, and memory dump around the
    address of the crash.
    
    Some vestiges of the Tilera-internal version of this support are
    removed with this patch (the show_crashinfo variable and the
    arch_coredump_signal function).  We retain a "crashinfo" boot parameter
    which allows you to set the boot-time value of exception-trace.
    Signed-off-by: default avatarChris Metcalf <cmetcalf@tilera.com>
    571d76ac
processor.h 10.1 KB