linux-toradex.git/scripts/gdb/linux/tasks.py, branch v4.8-rc6

scripts/gdb: add lx_thread_info_by_pid helper

2016-05-24T00:04:14+00:00

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 
Signed-off-by: Jan Kiszka 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

scripts/gdb: remove useless global instruction

2015-07-01T02:44:58+00:00

Signed-off-by: Thiébaud Weksteen 
Signed-off-by: Jan Kiszka 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

scripts/gdb: add ps command

2015-07-01T02:44:58+00:00

Signed-off-by: Thiébaud Weksteen 
Signed-off-by: Jan Kiszka 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

scripts/gdb: fix PEP8 compliance

2015-07-01T02:44:58+00:00

Signed-off-by: Thiébaud Weksteen 
Signed-off-by: Jan Kiszka 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

scripts/gdb: use a generator instead of iterator for task list

2015-02-17T22:34:54+00:00

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 
Signed-off-by: Jan Kiszka 
Cc: Thomas Gleixner 
Cc: Jason Wessel 
Cc: Andi Kleen 
Cc: Ben Widawsky 
Cc: Borislav Petkov 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

scripts/gdb: port to python3 / gdb7.7

2015-02-17T22:34:54+00:00

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 
Signed-off-by: Jan Kiszka 
Cc: Thomas Gleixner 
Cc: Jason Wessel 
Cc: Andi Kleen 
Cc: Ben Widawsky 
Cc: Borislav Petkov 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

scripts/gdb: add internal helper and convenience function to retrieve thread_info

2015-02-17T22:34:54+00:00

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 
Cc: Tony Luck 
Cc: Fenghua Yu 
Cc: Thomas Gleixner 
Cc: Jason Wessel 
Cc: Andi Kleen 
Cc: Ben Widawsky 
Cc: Borislav Petkov 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

scripts/gdb: add helper and convenience function to look up tasks

2015-02-17T22:34:54+00:00

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 
Cc: Thomas Gleixner 
Cc: Jason Wessel 
Cc: Andi Kleen 
Cc: Ben Widawsky 
Cc: Borislav Petkov 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

scripts/gdb: add task iteration class

2015-02-17T22:34:54+00:00

This class allows to iterate over all tasks of the target.

Signed-off-by: Jan Kiszka 
Cc: Thomas Gleixner 
Cc: Jason Wessel 
Cc: Andi Kleen 
Cc: Ben Widawsky 
Cc: Borislav Petkov 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds