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| author |   Kieran Bingham <kieran.bingham@linaro.org> | 2016-05-23 16:25:10 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-23 17:04:14 -0700 |
| commit | 9b5580359a844cc88bdfdbbb3a740817ba01526e (patch) | |
| tree | 60bc51c19ed030f5452d364334c73c865cab19b8 /Documentation | |
| parent | scripts/gdb: add a Radix Tree Parser (diff) | |
| download | linux-dev-9b5580359a844cc88bdfdbbb3a740817ba01526e.tar.xz linux-dev-9b5580359a844cc88bdfdbbb3a740817ba01526e.zip | |
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@siemens.com
Signed-off-by: Kieran Bingham <kieran.bingham@linaro.org>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/gdb-kernel-debugging.txt | 21 |
1 files changed, 21 insertions, 0 deletions
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 ------------------------------ |