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    Subject[PATCH v11 18/28] scripts/gdb: Add lx_current convenience function
    Date
    This is a shorthand for *$lx_per_cpu("current_task"), i.e. a convenience
    function to retrieve the currently running task of the active context.

    Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
    ---
    scripts/gdb/linux/cpus.py | 17 +++++++++++++++++
    1 file changed, 17 insertions(+)

    diff --git a/scripts/gdb/linux/cpus.py b/scripts/gdb/linux/cpus.py
    index 18337e0..b683da9 100644
    --- a/scripts/gdb/linux/cpus.py
    +++ b/scripts/gdb/linux/cpus.py
    @@ -66,3 +66,20 @@ Note that VAR has to be quoted as string."""


    PerCpu()
    +
    +
    +class LxCurrentFunc(gdb.Function):
    + """Return current task.
    +
    +$lx_current([CPU]): Return the per-cpu task variable for the given CPU
    +number. If CPU is omitted, the CPU of the current context is used."""
    +
    + def __init__(self):
    + super(LxCurrentFunc, self).__init__("lx_current")
    +
    + def invoke(self, cpu=-1):
    + var_ptr = gdb.parse_and_eval("&current_task")
    + return per_cpu(var_ptr, cpu).dereference()
    +
    +
    +LxCurrentFunc()
    --
    2.1.4


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