- May 24, 2016
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Kieran Bingham authored
Simplify the module list functions with the new list_for_each_entry abstractions Link: http://lkml.kernel.org/r/ad0101c9391088608166fcec26af179868973d86.1462865983.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>
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Kieran Bingham authored
Facilitate linked-list items by providing a generator to return the dereferenced, and type-cast objects from a kernel linked list Link: http://lkml.kernel.org/r/2b0998564e6e5abe53585d466f87e491331fd2a4.1462865983.git.jan.kiszka@siemens.com Signed-off-by:
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Kieran Bingham authored
Some macro's and defines are needed when parsing memory, and without compiling the kernel as -g3 they are not available in the debug-symbols. We use the pre-processor here to extract constants to a dedicated module for the linux debugger extensions Top level Kbuild is used to call in and generate the constants file, while maintaining dependencies on autogenerated files in include/generated Link: http://lkml.kernel.org/r/bc3df9c25f57ea72177c066a51a446fc19e2c27f.1462865983.git.jan.kiszka@siemens.com Signed-off-by:
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Jan Kiszka authored
This takes the MODULE_REF_BASE into account. Link: http://lkml.kernel.org/r/d926d2d54caa034adb964b52215090cbdb875249.1462865983.git.jan.kiszka@siemens.com Signed-off-by:
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- Mar 22, 2016
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Jan Kiszka authored
Commit 7523e4dc ("module: use a structure to encapsulate layout.") factored out the module_layout structure. Adjust the symbol loader and the lsmod command to this. Signed-off-by:
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Kieran Bingham authored
lx-cmdline Report the Linux Commandline used in the current kernel [jan.kiszka@siemens.com: remove blank line from help output and fix pep8 warning] Signed-off-by:
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Kieran Bingham authored
lx-version Report the Linux Version of the current kernel. Add a command to identify the version specified by the banner in the debugged kernel. This lets the user identify the kernel of the running kernel, and will let later scripts compare the banner of the attached kernel against the banner in the vmlinux symbols files to verify that the files are correct. [jan.kiszka@siemens.com: remove blank line from help output and fix pep8 warning] Signed-off-by:
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- Jul 01, 2015
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Thiébaud Weksteen authored
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Thiébaud Weksteen <thiebaud@weksteen.fr> Signed-off-by:
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Thiébaud Weksteen authored
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Thiébaud Weksteen authored
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Thiébaud Weksteen authored
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Jan Kiszka authored
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Jan Kiszka authored
This makes the usage more flexible. Signed-off-by:
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Thiébaud Weksteen authored
Add a gdb script to verify the consistency of lists. Signed-off-by:
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- May 29, 2015
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Adrien Schildknecht authored
Commit 2f35c41f ("module: Replace module_ref with atomic_t refcnt") changes the way refcnt is handled but did not update the gdb script to use the new variable. Since refcnt is not per-cpu anymore, we can directly read its value. Signed-off-by:
Adrien Schildknecht <adrien+dev@schischi.me> Reviewed-by:
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- Feb 28, 2015
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Jan Kiszka authored
This got lost during the initial merge process: Python requires an __init__.py script, even if empty, in order to accept a directory as package. Add it, this time as a non-empty file. Signed-off-by:
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- Feb 17, 2015
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Jan Kiszka authored
While reporting the (refreshed) list of modules on automatic updates we may hit the page boundary of the output console and cause a stop if pagination is enabled. However, gdb does not accept user input while running over the breakpoint handler. So we get stuck, and the user is forced to interrupt gdb. Resolve this by disabling pagination during automatic symbol updates. We restore the user's configuration once done. Signed-off-by:
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Jan Kiszka authored
Yet another code simplification. Signed-off-by:
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Jan Kiszka authored
Analogously to the task list, convert the module list to a generator function. It noticeably simplifies the code. Signed-off-by:
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Daniel Wagner authored
The iterator does not return any task_struct from the thread_group list because the first condition in the 'if not t or ...' will only be the first time None. Instead of keeping track of the state ourself in the next() function, we fall back using Python's generator. Signed-off-by:
Daniel Wagner <daniel.wagner@bmw-carit.de> Signed-off-by:
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Daniel Thompson authored
Using the gdb scripts leaves byte-compiled python files in the scripts/ directory. These should be ignored by git. [jan.kiszka@siemens.com: drop redundant mrproper rule as suggested by Michal] Signed-off-by:
Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by:
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Pantelis Koukousoulas authored
I tried to use these scripts in an ubuntu 14.04 host (gdb 7.7 compiled against python 3.3) but there were several errors. I believe this patch fixes these issues so that the commands now work (I tested lx-symbols, lx-dmesg, lx-lsmod). Main issues that needed to be resolved: * In python 2 iterators have a "next()" method. In python 3 it is __next__() instead (so let's just add both). * In older python versions there was an implicit conversion in object.__format__() (used when an object is in string.format()) where it was converting the object to str first and then calling str's __format__(). This has now been removed so we must explicitly convert to str the objects for which we need to keep this behavior. * In dmesg.py: in python 3 log_buf is now a "memoryview" object which needs to be converted to a string in order to use string methods like "splitlines()". Luckily memoryview exists in python 2.7.6 as well, so we can convert log_buf to memoryview and use the same code in both python 2 and python 3. This version of the patch has now been tested with gdb 7.7 and both python 3.4 and python 2.7.6 (I think asking for at least python 2.7.6 is a reasonable requirement instead of complicating the code with version checks etc). Signed-off-by:Pantelis Koukousoulas <pktoss@gmail.com> Signed-off-by:
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Jan Kiszka authored
This adds a lsmod-like command to list all currently loaded modules of the target. Signed-off-by:
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Jan Kiszka authored
Will be used first to count module references. It is optimized to read the mask only once per stop. Signed-off-by:
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Jan Kiszka authored
This is a shorthand for *$lx_per_cpu("current_task"), i.e. a convenience function to retrieve the currently running task of the active context. Signed-off-by: -
Jan Kiszka authored
This function allows to obtain a per-cpu variable, either of the current or an explicitly specified CPU. Note: sparc64 version is untested. Signed-off-by:
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Jan Kiszka authored
This helper probes the type of the gdb server. Supported are QEMU and KGDB so far. Knowledge about the gdb server is required e.g. to retrieve the current CPU or current task. Signed-off-by:
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Jan Kiszka authored
Add the internal helper get_thread_info that calculates the thread_info from a given task variable. Also export this service as a convenience function. Note: ia64 version is untested. Signed-off-by:
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Jan Kiszka authored
This helper caches to result of "show architecture" and matches the provided arch (sub-)string against that output. Signed-off-by:
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Jan Kiszka authored
Add the helper task_by_pid that can look up a task by its PID. Also export it as a convenience function. Signed-off-by:
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Jan Kiszka authored
This class allows to iterate over all tasks of the target. Signed-off-by:
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Jan Kiszka authored
This pokes into the log buffer of the debugged kernel, dumping it to the gdb console. Helping in case the target should or can no longer execute dmesg itself. Signed-off-by:
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Jan Kiszka authored
Add helpers for reading integers from target memory buffers. Required when caching the memory access is more efficient than reading individual values via gdb. Signed-off-by:
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Jan Kiszka authored
Parse the target endianness from the output of "show endian" and cache the result to return it via the new helper get_target_endiannes. We will need it for reading integers from buffers that contain target memory. Signed-off-by:
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Jan Kiszka authored
Add the internal helper get_module_by_name to obtain the module structure corresponding to the given name. Also export this service as a convenience function. Signed-off-by:
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Jan Kiszka authored
This installs a silent breakpoint on the do_init_module function. The breakpoint handler will try to load symbols from the module files found during lx-symbols execution. This way, breakpoints can be set to module initialization functions, and there is no need to explicitly call lx-symbols after (re-)loading a module. Signed-off-by:
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Jan Kiszka authored
This is probably the most useful helper when debugging kernel modules: lx-symbols first reloads vmlinux. Then it searches recursively for *.ko files in the specified paths and the current directory. Finally it walks the kernel's module list, issuing the necessary add-symbol-file command for each loaded module so that gdb knows which module symbol corresponds to which address. It also looks up variable sections (bss, data, rodata) and appends their address to the add-symbole-file command line. This allows to access global module variables just like any other variable. Signed-off-by:
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Jan Kiszka authored
Will soon be used for loading symbols, printing global variables or listing modules. Signed-off-by:
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Jan Kiszka authored
Provide an internal helper with container_of semantics. As type lookups are very slow in gdb-python and we need a type "long" for this, cache the reference to this type object. Then export the helper also as a convenience function form use at the gdb command line. Signed-off-by:
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Jan Kiszka authored
Type lookups are very slow in gdb-python which is often noticeable when iterating over a number of objects. Introduce the helper class CachedType that keeps a reference to a gdb.Type object but also refreshes it after an object file has been loaded. Signed-off-by:
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