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Date:   Thu, 21 Apr 2022 13:50:58 +0200
From:   Peter Zijlstra <peterz@infradead.org>
To:     Oleg Nesterov <oleg@redhat.com>
Cc:     "Eric W. Biederman" <ebiederm@xmission.com>, rjw@rjwysocki.net,
        mingo@kernel.org, vincent.guittot@linaro.org,
        dietmar.eggemann@arm.com, rostedt@goodmis.org, mgorman@suse.de,
        bigeasy@linutronix.de, Will Deacon <will@kernel.org>,
        linux-kernel@vger.kernel.org, tj@kernel.org,
        linux-pm@vger.kernel.org
Subject: Re: [RFC][PATCH] ptrace: Don't change __state
Message-ID: <20220421115058.GN2731@worktop.programming.kicks-ass.net>
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On Thu, Apr 21, 2022 at 12:49:43PM +0200, Oleg Nesterov wrote:
> On 04/21, Peter Zijlstra wrote:
> >
> > As such, I've taken the liberty of munging yours and Oleg's approach
> > together. I've yet to actually test this but it looks feasible.
> 
> Agreed, but I am a but confused. Is it on top of 1/5? Doesn't look so,
> and I can't apply it with or without 1/5. So I am not sure I understand
> what exactly it does.

Yes, it is on top of a modified 1, I mean to post an updated and tested
series later today.

Basically it does the TRACED_QUIESCE thing from your patch, and then
does the DELAY_WAKEKILL thing from Eric's patch.