e127a73d41
Linux makes use of the Radix Tree data structure to store pointers indexed by integer values. This structure is utilised across many structures in the kernel including the IRQ descriptor tables, and several filesystems. This module provides a method to lookup values from a structure given its head node. Usage: The function lx_radix_tree_lookup, must be given a symbol of type struct radix_tree_root, and an index into that tree. The object returned is a generic integer value, and must be cast correctly to the type based on the storage in the data structure. For example, to print the irq descriptor in the sparse irq_desc_tree at index 18, try the following: (gdb) print (struct irq_desc)$lx_radix_tree_lookup(irq_desc_tree, 18) Link: http://lkml.kernel.org/r/d2028c55e50cf95a9b7f8ca0d11885174b0cc709.1462865983.git.jan.kiszka@siemens.com Signed-off-by: Kieran Bingham <kieran.bingham@linaro.org> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
35 lines
748 B
Python
35 lines
748 B
Python
#
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# gdb helper commands and functions for Linux kernel debugging
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#
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# loader module
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#
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# Copyright (c) Siemens AG, 2012, 2013
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#
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# Authors:
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# Jan Kiszka <jan.kiszka@siemens.com>
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#
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# This work is licensed under the terms of the GNU GPL version 2.
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#
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import os
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sys.path.insert(0, os.path.dirname(__file__) + "/scripts/gdb")
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try:
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gdb.parse_and_eval("0")
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gdb.execute("", to_string=True)
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except:
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gdb.write("NOTE: gdb 7.2 or later required for Linux helper scripts to "
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"work.\n")
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else:
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import linux.utils
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import linux.symbols
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import linux.modules
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import linux.dmesg
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import linux.tasks
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import linux.cpus
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import linux.lists
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import linux.proc
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import linux.constants
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import linux.radixtree
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