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2017-06-02scripts/gdb: make lx-dmesg command work (reliably)André Draszik1-4/+5
lx-dmesg needs access to the log_buf symbol from printk.c. Unfortunately, the symbol log_buf also exists in BPF's verifier.c and hence gdb can pick one or the other. If it happens to pick BPF's log_buf, lx-dmesg doesn't work: (gdb) lx-dmesg Python Exception <class 'gdb.MemoryError'> Cannot access memory at address 0x0: Error occurred in Python command: Cannot access memory at address 0x0 (gdb) p log_buf $15 = 0x0 Luckily, GDB has a way to deal with this, see https://sourceware.org/gdb/onlinedocs/gdb/Symbols.html (gdb) info variables ^log_buf$ All variables matching regular expression "^log_buf$": File <linux.git>/kernel/bpf/verifier.c: static char *log_buf; File <linux.git>/kernel/printk/printk.c: static char *log_buf; (gdb) p 'verifier.c'::log_buf $1 = 0x0 (gdb) p 'printk.c'::log_buf $2 = 0x811a6aa0 <__log_buf> "" (gdb) p &log_buf $3 = (char **) 0x8120fe40 <log_buf> (gdb) p &'verifier.c'::log_buf $4 = (char **) 0x8120fe40 <log_buf> (gdb) p &'printk.c'::log_buf $5 = (char **) 0x8048b7d0 <log_buf> By being explicit about the location of the symbol, we can make lx-dmesg work again. While at it, do the same for the other symbols we need from printk.c Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: André Draszik <[email protected]> Tested-by: Kieran Bingham <[email protected]> Acked-by: Jan Kiszka <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2016-07-15Revert "scripts/gdb: add a Radix Tree Parser"Kieran Bingham2-104/+0
This reverts commit e127a73d41ac ("scripts/gdb: add a Radix Tree Parser") The python implementation of radix-tree was merged at the same time as the radix-tree system was heavily reworked from commit e9256efcc8e3 ("radix-tree: introduce radix_tree_empty") to 3bcadd6fa6c4 ("radix-tree: free up the bottom bit of exceptional entries for reuse") and no longer functions, but also prevents other gdb scripts from loading. This functionality has not yet hit a release, so simply remove it for now Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Kieran Bingham <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2016-07-15scripts/gdb: Perform path expansion to lx-symbol's argumentsNikolay Borisov1-1/+1
Python doesn't do automatic expansion of paths. In case one passes path of the from ~/foo/bar the gdb scripts won't automatically expand that and as a result the symbols files won't be loaded. Fix this by explicitly expanding all paths which begin with "~" Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Nikolay Borisov <[email protected]> Signed-off-by: Kieran Bingham <[email protected]> Reviewed-by: Jan Kiszka <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2016-07-15scripts/gdb: add constants.py to .gitignoreOmar Sandoval1-0/+1
Since scripts/gdb/linux/constants.py is autogenerated, this should have been added to .gitignore when it was introduced. Fixes: f197d75fcad1 ("scripts/gdb: provide linux constants") Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Omar Sandoval <[email protected]> Signed-off-by: Kieran Bingham <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2016-07-15scripts/gdb: rebuild constants.py on dependancy changeKieran Bingham1-2/+3
The autogenerated constants.py file was only being built on the initial call, and if the constants.py.in file changed. As we are utilising the CPP hooks, we can successfully use the call if_changed_dep rules to determine when to rebuild the file based on it's inclusions. Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Kieran Bingham <[email protected]> Reported-by: Jan Kiszka <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2016-07-15scripts/gdb: silence 'nothing to do' messageKieran Bingham1-0/+1
The constants.py generation, involves a rule to link into the main makefile. This rule has no command and generates a spurious warning message in the build logs when CONFIG_SCRIPTS_GDB is enabled. Fix simply by giving a no-op action Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Kieran Bingham <[email protected]> Reported-by: Jan Kiszka <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2016-05-23scripts/gdb: decode bytestream on dmesg for Python3Kieran Bingham1-2/+2
The recent fixes to lx-dmesg, now allow the command to print successfully on Python3, however the python interpreter wraps the bytes for each line with a b'<text>' marker. To remove this, we need to decode the line, where .decode() will default to 'UTF-8' Link: http://lkml.kernel.org/r/d67ccf93f2479c94cb3399262b9b796e0dbefcf2.1462865983.git.jan.kiszka@siemens.com Signed-off-by: Kieran Bingham <[email protected]> Acked-by: Dom Cote <[email protected]> Tested-by: Dom Cote <[email protected]> Signed-off-by: Jan Kiszka <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2016-05-23scripts/gdb: fix issue with dmesg.py and python 3.XDom Cote1-3/+4
When built against Python 3, GDB differs in the return type for its read_memory function, causing the lx-dmesg command to fail. Now that we have an improved read_16() we can use the new read_memoryview() abstraction to make lx-dmesg return valid data on both current Python APIs Tested with python 3.4 and 2.7 Tested with gdb 7.7 Link: http://lkml.kernel.org/r/28477b727ff7fe3101fd4e426060e8a68317a639.1462865983.git.jan.kiszka@siemens.com Signed-off-by: Dom Cote <[email protected]> [[email protected]: Adjusted commit log to better reflect code changes] Tested-by: Kieran Bingham <[email protected]> (Py2.7,Py3.4,GDB10) Signed-off-by: Kieran Bingham <[email protected]> Signed-off-by: Jan Kiszka <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2016-05-23scripts/gdb: improve types abstraction for gdb python scriptsDom Cote1-2/+15
Change the read_u16 function so it accepts both 'str' and 'byte' as type for the arguments. When calling read_memory() from gdb API, depending on if it was built with 2.7 or 3.X, the format used to return the data will differ ( 'str' for 2.7, and 'byte' for 3.X ). Add a function read_memoryview() to be able to get a 'memoryview' object back from read_memory() both with python 2.7 and 3.X . Tested with python 3.4 and 2.7 Tested with gdb 7.7 Link: http://lkml.kernel.org/r/73621f564503137a002a639d174e4fb35f73f462.1462865983.git.jan.kiszka@siemens.com Signed-off-by: Dom Cote <[email protected]> Tested-by: Kieran Bingham <[email protected]> (Py2.7,Py3.4,GDB10) Signed-off-by: Kieran Bingham <[email protected]> Signed-off-by: Jan Kiszka <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2016-05-23scripts/gdb: add lx_thread_info_by_pid helperKieran Bingham1-0/+19
The tasks module already provides helpers to find the task struct by pid, and the thread_info by task struct; however this is cumbersome to utilise on the gdb commandline. Wrap these two functionalities together in an extra single helper to allow exploring the thread info, from a PID value Link: http://lkml.kernel.org/r/dadc5667f053ec811eb3e3033d99d937fedbc93b.1462865983.git.jan.kiszka@siemens.com Signed-off-by: Kieran Bingham <[email protected]> Signed-off-by: Jan Kiszka <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2016-05-23scripts/gdb: add a Radix Tree ParserKieran Bingham2-0/+104
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 <[email protected]> Signed-off-by: Jan Kiszka <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2016-05-23scripts/gdb: cast CPU numbers to integerJan Kiszka1-1/+1
We won't see more than 2 billion CPUs any time soon, and having cpu_list return long makes the output of lx-cpus a bit ugly. Link: http://lkml.kernel.org/r/dcb45c3b0a59e0fd321fa56ff7aa398458c689b3.1462865983.git.jan.kiszka@siemens.com Signed-off-by: Jan Kiszka <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2016-05-23scripts/gdb: add cpu iteratorsKieran Bingham1-0/+38
The linux kernel provides macro's for iterating against values from the cpu_list masks. By providing some commonly used masks, we can mirror the kernels helper macros with easy to use generators. Link: http://lkml.kernel.org/r/d045c6599771ada1999d49612ee30fd2f9acf17f.1462865983.git.jan.kiszka@siemens.com Signed-off-by: Kieran Bingham <[email protected]> Signed-off-by: Jan Kiszka <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2016-05-23scripts/gdb: add mount point list commandKieran Bingham2-0/+119
lx-mounts will identify current mount points based on the 'init_task' namespace by default, as we do not yet have a kernel thread list implementation to select the current running thread. Optionally, a user can specify a PID to list from that process' namespace Link: http://lkml.kernel.org/r/e614c7bc32d2350b4ff1627ec761a7148e65bfe6.1462865983.git.jan.kiszka@siemens.com Signed-off-by: Kieran Bingham <[email protected]> Signed-off-by: Jan Kiszka <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2016-05-23scripts/gdb: add io resource readersKieran Bingham1-0/+57
Provide iomem_resource and ioports_resource printers and command hooks It can be quite interesting to halt the kernel as it's booting and check to see this list as it is being populated. It should be useful in the event that a kernel is not booting, you can identify what memory resources have been registered Link: http://lkml.kernel.org/r/f0a6b9fa9c92af4d7ed2e7343ccc84150e9c6fc5.1462865983.git.jan.kiszka@siemens.com Signed-off-by: Kieran Bingham <[email protected]> Signed-off-by: Jan Kiszka <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2016-05-23scripts/gdb: provide a dentry_name VFS path helperKieran Bingham1-0/+8
Walk the VFS entries, pre-pending the iname strings to generate a full VFS path name from a dentry. Link: http://lkml.kernel.org/r/4328fdb2d15ba7f1b21ad21c2eecc38d9cfc4d13.1462865983.git.jan.kiszka@siemens.com Signed-off-by: Kieran Bingham <[email protected]> Signed-off-by: Jan Kiszka <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2016-05-23scripts/gdb: support !CONFIG_MODULES gracefullyKieran Bingham1-1/+4
If CONFIG_MODULES is not enabled, lx-lsmod tries to find a non-existent symbol and generates an unfriendly traceback: (gdb) lx-lsmod Address Module Size Used by Traceback (most recent call last): File "scripts/gdb/linux/modules.py", line 75, in invoke for module in module_list(): File "scripts/gdb/linux/modules.py", line 24, in module_list module_ptr_type = module_type.get_type().pointer() File "scripts/gdb/linux/utils.py", line 28, in get_type self._type = gdb.lookup_type(self._name) gdb.error: No struct type named module. Error occurred in Python command: No struct type named module. Catch the error and return an empty module_list() for a clean command output as follows: (gdb) lx-lsmod Address Module Size Used by (gdb) Link: http://lkml.kernel.org/r/94d533819437408b85ae5864f939dd7ca6fbfcd6.1462865983.git.jan.kiszka@siemens.com Signed-off-by: Kieran Bingham <[email protected]> Signed-off-by: Jan Kiszka <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2016-05-23scripts/gdb: provide exception catching parserKieran Bingham1-0/+7
If we attempt to read a value that is not available to GDB, an exception is raised. Most of the time, this is a good thing; however on occasion we will want to be able to determine if a symbol is available. By catching the exception to simply return None, we can determine if we tried to read an invalid value, without the exception taking our execution context away from us Link: http://lkml.kernel.org/r/c72b25c06fc66e1d68371154097e2cbb112555d8.1462865983.git.jan.kiszka@siemens.com Signed-off-by: Kieran Bingham <[email protected]> Signed-off-by: Jan Kiszka <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2016-05-23scripts/gdb: convert modules usage to lists functionsKieran Bingham1-11/+6
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 <[email protected]> Signed-off-by: Jan Kiszka <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2016-05-23scripts/gdb: provide kernel list item generatorsKieran Bingham1-0/+21
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: Kieran Bingham <[email protected]> Signed-off-by: Jan Kiszka <[email protected]> Cc: Jeff Mahoney <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2016-05-23scripts/gdb: provide linux constantsKieran Bingham2-1/+43
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: Kieran Bingham <[email protected]> Signed-off-by: Jan Kiszka <[email protected]> Cc: Michal Marek <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2016-05-23scripts/gdb: Adjust module reference counter reported by lx-lsmodJan Kiszka1-1/+1
This takes the MODULE_REF_BASE into account. Link: http://lkml.kernel.org/r/d926d2d54caa034adb964b52215090cbdb875249.1462865983.git.jan.kiszka@siemens.com Signed-off-by: Jan Kiszka <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2016-03-22scripts/gdb: account for changes in module data structureJan Kiszka2-3/+4
Commit 7523e4dc5057 ("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: Jan Kiszka <[email protected]> Reviewed-by: Kieran Bingham <[email protected]> Tested-by: Kieran Bingham <[email protected]> (qemu-{ARM,x86}) Cc: Rusty Russell <[email protected]> Cc: Jiri Kosina <[email protected]> Cc: Jason Wessel <[email protected]> Cc: <[email protected]> [4.4+] Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2016-03-22scripts/gdb: add cmdline reader commandKieran Bingham1-0/+13
lx-cmdline Report the Linux Commandline used in the current kernel [[email protected]: remove blank line from help output and fix pep8 warning] Signed-off-by: Kieran Bingham <[email protected]> Signed-off-by: Jan Kiszka <[email protected]> Cc: Jason Wessel <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2016-03-22scripts/gdb: add version commandKieran Bingham1-0/+28
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. [[email protected]: remove blank line from help output and fix pep8 warning] Signed-off-by: Kieran Bingham <[email protected]> Signed-off-by: Jan Kiszka <[email protected]> Cc: Jason Wessel <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-06-30scripts/gdb: remove useless global instructionThiébaud Weksteen1-2/+0
Signed-off-by: Thiébaud Weksteen <[email protected]> Signed-off-by: Jan Kiszka <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-06-30scripts/gdb: add ps commandThiébaud Weksteen1-0/+16
Signed-off-by: Thiébaud Weksteen <[email protected]> Signed-off-by: Jan Kiszka <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-06-30scripts/gdb: fix PEP8 complianceThiébaud Weksteen4-7/+7
Signed-off-by: Thiébaud Weksteen <[email protected]> Signed-off-by: Jan Kiszka <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-06-30scripts/gdb: fix typo in exception nameThiébaud Weksteen1-1/+1
Signed-off-by: Thiébaud Weksteen <[email protected]> Signed-off-by: Jan Kiszka <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-06-30scripts/gdb: enable completion for lx-list-check parameterJan Kiszka1-1/+2
Signed-off-by: Jan Kiszka <[email protected]> Cc: Thiébaud Weksteen <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-06-30scripts/gdb: also allow list_head pointer as lx-list-check paramterJan Kiszka1-2/+4
This makes the usage more flexible. Signed-off-by: Jan Kiszka <[email protected]> Cc: Thiébaud Weksteen <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-06-30scripts/gdb: add command to check list consistencyThiébaud Weksteen1-0/+89
Add a gdb script to verify the consistency of lists. Signed-off-by: Thiébaud Weksteen <[email protected]> Signed-off-by: Jan Kiszka <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-05-28scripts/gdb: fix lx-lsmod refcntAdrien Schildknecht1-8/+1
Commit 2f35c41f58a9 ("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 <[email protected]> Reviewed-by: Jan Kiszka <[email protected]> Cc: Pantelis Koukousoulas <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-28scripts/gdb: add empty package initialization scriptJan Kiszka1-0/+1
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: Jan Kiszka <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-17scripts/gdb: disable pagination while printing from breakpoint handlerJan Kiszka1-0/+11
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: Jan Kiszka <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Jason Wessel <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Ben Widawsky <[email protected]> Cc: Borislav Petkov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-17scripts/gdb: convert CpuList to generator functionJan Kiszka2-40/+33
Yet another code simplification. Signed-off-by: Jan Kiszka <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Jason Wessel <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Ben Widawsky <[email protected]> Cc: Borislav Petkov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-17scripts/gdb: convert ModuleList to generator functionJan Kiszka2-23/+12
Analogously to the task list, convert the module list to a generator function. It noticeably simplifies the code. Signed-off-by: Jan Kiszka <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Jason Wessel <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Ben Widawsky <[email protected]> Cc: Borislav Petkov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-17scripts/gdb: use a generator instead of iterator for task listDaniel Wagner1-30/+20
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 <[email protected]> Signed-off-by: Jan Kiszka <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Jason Wessel <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Ben Widawsky <[email protected]> Cc: Borislav Petkov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-17scripts/gdb: ignore byte-compiled python filesDaniel Thompson1-0/+2
Using the gdb scripts leaves byte-compiled python files in the scripts/ directory. These should be ignored by git. [[email protected]: drop redundant mrproper rule as suggested by Michal] Signed-off-by: Daniel Thompson <[email protected]> Signed-off-by: Jan Kiszka <[email protected]> Cc: Michal Marek <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Jason Wessel <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Ben Widawsky <[email protected]> Cc: Borislav Petkov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-17scripts/gdb: port to python3 / gdb7.7Pantelis Koukousoulas6-9/+18
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 <[email protected]> Signed-off-by: Jan Kiszka <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Jason Wessel <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Ben Widawsky <[email protected]> Cc: Borislav Petkov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-17scripts/gdb: add lx-lsmod commandJan Kiszka1-1/+45
This adds a lsmod-like command to list all currently loaded modules of the target. Signed-off-by: Jan Kiszka <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Jason Wessel <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Ben Widawsky <[email protected]> Cc: Borislav Petkov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-17scripts/gdb: add class to iterate over CPU masksJan Kiszka1-0/+54
Will be used first to count module references. It is optimized to read the mask only once per stop. Signed-off-by: Jan Kiszka <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Jason Wessel <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Ben Widawsky <[email protected]> Cc: Borislav Petkov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-17scripts/gdb: add lx_current convenience functionJan Kiszka1-0/+17
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 <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Jason Wessel <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Ben Widawsky <[email protected]> Cc: Borislav Petkov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-17scripts/gdb: add internal helper and convenience function for per-cpu lookupJan Kiszka1-0/+68
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: Jan Kiszka <[email protected]> Cc: "David S. Miller" <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Jason Wessel <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Ben Widawsky <[email protected]> Cc: Borislav Petkov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-17scripts/gdb: add get_gdbserver_type helperJan Kiszka1-0/+35
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: Jan Kiszka <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Jason Wessel <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Ben Widawsky <[email protected]> Cc: Borislav Petkov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-17scripts/gdb: add internal helper and convenience function to retrieve ↵Jan Kiszka1-0/+35
thread_info 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: Jan Kiszka <[email protected]> Cc: Tony Luck <[email protected]> Cc: Fenghua Yu <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Jason Wessel <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Ben Widawsky <[email protected]> Cc: Borislav Petkov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-17scripts/gdb: add is_target_arch helperJan Kiszka1-0/+13
This helper caches to result of "show architecture" and matches the provided arch (sub-)string against that output. Signed-off-by: Jan Kiszka <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Jason Wessel <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Ben Widawsky <[email protected]> Cc: Borislav Petkov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-17scripts/gdb: add helper and convenience function to look up tasksJan Kiszka1-0/+27
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: Jan Kiszka <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Jason Wessel <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Ben Widawsky <[email protected]> Cc: Borislav Petkov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-17scripts/gdb: add task iteration classJan Kiszka1-0/+46
This class allows to iterate over all tasks of the target. Signed-off-by: Jan Kiszka <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Jason Wessel <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Ben Widawsky <[email protected]> Cc: Borislav Petkov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-17scripts/gdb: add lx-dmesg commandJan Kiszka1-0/+64
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: Jan Kiszka <[email protected]> Cc: Kay Sievers <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Jason Wessel <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Ben Widawsky <[email protected]> Cc: Borislav Petkov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
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