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| author | Kieran Bingham <kieran.bingham@linaro.org> | 2016-05-24 01:25:13 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-24 02:04:14 +0200 |
| commit | 9f66dee720984edcbc6ea07ad70fe5b8f0421c04 (patch) | |
| tree | abf3af7a63a3155a1c330147c2b57be125d62b27 | |
| parent | scripts/gdb: add documentation example for radix tree (diff) | |
| download | linux-9f66dee720984edcbc6ea07ad70fe5b8f0421c04.tar.xz linux-9f66dee720984edcbc6ea07ad70fe5b8f0421c04.zip | |
scripts/gdb: add lx_thread_info_by_pid helper
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 <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>
| -rw-r--r-- | scripts/gdb/linux/tasks.py | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/scripts/gdb/linux/tasks.py b/scripts/gdb/linux/tasks.py index 862a4ae24d49..1bf949c43b76 100644 --- a/scripts/gdb/linux/tasks.py +++ b/scripts/gdb/linux/tasks.py @@ -114,3 +114,22 @@ variable.""" LxThreadInfoFunc() + + +class LxThreadInfoByPidFunc (gdb.Function): + """Calculate Linux thread_info from task variable found by pid + +$lx_thread_info_by_pid(PID): Given PID, return the corresponding thread_info +variable.""" + + def __init__(self): + super(LxThreadInfoByPidFunc, self).__init__("lx_thread_info_by_pid") + + def invoke(self, pid): + task = get_task_by_pid(pid) + if task: + return get_thread_info(task.dereference()) + else: + raise gdb.GdbError("No task of PID " + str(pid)) + +LxThreadInfoByPidFunc() |