Messages in this thread Patch in this message | | | From | Jan Kiszka <> | Subject | [PATCH 13/18] scripts/gdb: Add documentation example for radix tree | Date | Tue, 10 May 2016 09:39:38 +0200 |
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From: Kieran Bingham <kieran.bingham@linaro.org>
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> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> --- 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 7050ce8..4ab7d43 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 ------------------------------ -- 2.1.4
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