Commit 9f66dee7 authored by Kieran Bingham's avatar Kieran Bingham Committed by Linus Torvalds

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.comSigned-off-by: default avatarKieran Bingham <kieran.bingham@linaro.org>
Signed-off-by: default avatarJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 9b558035
...@@ -114,3 +114,22 @@ variable.""" ...@@ -114,3 +114,22 @@ variable."""
LxThreadInfoFunc() 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()
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