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    Subject[PATCHv4 11/12] scripts/gdb: Add documentation example for radix tree
    Date
    Provide a worked example for utilising the lx_radix_tree_lookup function

    Cc: Jonathan Corbet <corbet@lwn.net>
    Cc: linux-doc@vger.kernel.org

    Signed-off-by: Kieran Bingham <kieran.bingham@linaro.org>
    ---
    Documentation/gdb-kernel-debugging.txt | 21 +++++++++++++++++++++
    1 file changed, 21 insertions(+)

    diff --git a/Documentation/gdb-kernel-debugging.txt b/Documentation/gdb-kernel-debugging.txt
    index 7050ce8794b9..4ab7d43d0754 100644
    --- a/Documentation/gdb-kernel-debugging.txt
    +++ b/Documentation/gdb-kernel-debugging.txt
    @@ -139,6 +139,27 @@ Examples of using the Linux-provided gdb helpers
    start_comm = "swapper/2\000\000\000\000\000\000"
    }

    + o Dig into a radix tree data structure, such as the IRQ descriptors:
    + (gdb) print (struct irq_desc)$lx_radix_tree_lookup(irq_desc_tree, 18)
    + $6 = {
    + irq_common_data = {
    + state_use_accessors = 67584,
    + handler_data = 0x0 <__vectors_start>,
    + msi_desc = 0x0 <__vectors_start>,
    + affinity = {{
    + bits = {65535}
    + }}
    + },
    + irq_data = {
    + mask = 0,
    + irq = 18,
    + hwirq = 27,
    + common = 0xee803d80,
    + chip = 0xc0eb0854 <gic_data>,
    + domain = 0xee808000,
    + parent_data = 0x0 <__vectors_start>,
    + chip_data = 0xc0eb0854 <gic_data>
    + } <... trimmed ...>

    List of commands and functions
    ------------------------------
    --
    2.5.0
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