Hi,Blaisorblade. You wrote:
>do_syscall is called, and then this is done:
>
> sig = SIGUSR2;
> tracing = 0;
>... after, this saves the new tracing value inside "task", which is a struct
>task_struct.
>
> set_tracing(task, tracing);
>
But what's the exact meaning of the task in the tracer function? It is defined
as:
task = cpu_tasks[proc_id].task
Is it the task struct of the traced thread?
What's the difference between "task->pid" and "task->thread.mode.tt.extern_pid"?
I know in TT mode every thread in UML will has a corresponding thread in host.
But I don't know the exact relationship between them. And I didn't found how
UML creat the corresponding thread in host.
Thanks a lot!
Alex
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