From: Kieran Bingham <kieran.bingham@xxxxxxxxxx> Subject: scripts/gdb: add documentation example for radix tree Provide a worked example for utilising the lx_radix_tree_lookup function Link: http://lkml.kernel.org/r/e786008ac5aec4b84198812805b326d718bdeb4b.1462865983.git.jan.kiszka@xxxxxxxxxxx Signed-off-by: Kieran Bingham <kieran.bingham@xxxxxxxxxx> Signed-off-by: Jan Kiszka <jan.kiszka@xxxxxxxxxxx> Cc: Jonathan Corbet <corbet@xxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- Documentation/gdb-kernel-debugging.txt | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff -puN Documentation/gdb-kernel-debugging.txt~scripts-gdb-add-documentation-example-for-radix-tree Documentation/gdb-kernel-debugging.txt --- a/Documentation/gdb-kernel-debugging.txt~scripts-gdb-add-documentation-example-for-radix-tree +++ a/Documentation/gdb-kernel-debugging.txt @@ -139,6 +139,27 @@ Examples of using the Linux-provided gdb 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 ------------------------------ _ -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
