From 9f66dee720984edcbc6ea07ad70fe5b8f0421c04 Mon Sep 17 00:00:00 2001 From: Kieran Bingham Date: Mon, 23 May 2016 16:25:13 -0700 Subject: [PATCH] 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 Signed-off-by: Jan Kiszka Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- scripts/gdb/linux/tasks.py | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) 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() -- 2.20.1