Re: [PATCH] sched: Consider task_struct::saved_state in wait_task_inactive().

From: Sebastian Andrzej Siewior
Date: Wed May 24 2023 - 11:00:08 EST


On 2023-03-29 15:33:39 [+0200], To Peter Zijlstra wrote:
> On 2023-02-23 17:53:48 [+0100], To Peter Zijlstra wrote:
> > On 2023-02-22 14:36:14 [+0100], Peter Zijlstra wrote:
> > > Which if the very few wait_task_inactive() users requires this?
> >
> > ptrace is the remaining (known) one (just verified on v6.2-rt3).
> > ptrace_check_attach() waits for the child which blocks on tasklist_lock.
> >
> > tglx argued that wait_task_inactive() should work regardless of the
> > task, that is being waited for, blocks on a sleeping lock.
>
> a polite ping.

a very polity ping.

Sebastian