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    SubjectAlways print panic message on current console
    The kernel offers with TIOCL_GETKMSGREDIRECT ioctl() the possibility to
    redirect the kernel messages to a specific console.

    However, since it's not possible to switch to the kernel message console after
    a panic(), it would be nice if the kernel would print the panic message on the
    current console.

    As suggested by Andrew, this patch series adds a new interface to access
    the global kmsg_redirect variable by a function to be able to use it in
    code where CONFIG_VT_CONSOLE is not set (kernel/panic.c).

    The patch series makes kmsg_redirect a static variable and all kernel
    code outside of vt.c accesses that variable by the vt_set_kmsg_redirect()
    and vt_get_kmsg_redirect() functions.

    Signed-off-by: Bernhard Walle <>

    drivers/char/vt.c | 41 ++++++++++++++++++++++++++++++++++++++++-
    include/linux/tty.h | 2 --
    include/linux/vt.h | 18 ++++++++++++++++++
    kernel/panic.c | 4 ++++
    kernel/power/console.c | 8 ++++----
    5 files changed, 66 insertions(+), 7 deletions(-)

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      Last update: 2009-10-10 22:57    [W:0.018 / U:39.844 seconds]
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