linux-kernel - Re: [PATCH 0/4] rcu: Fix PF

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Message-ID: <20231027192323.GH26550@noisy.programming.kicks-ass.net>
Date:   Fri, 27 Oct 2023 21:23:23 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Frederic Weisbecker <frederic@...nel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        rcu <rcu@...r.kernel.org>, Uladzislau Rezki <urezki@...il.com>,
        Neeraj Upadhyay <neeraj.upadhyay@....com>,
        Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        Boqun Feng <boqun.feng@...il.com>,
        "Paul E . McKenney" <paulmck@...nel.org>,
        Joel Fernandes <joel@...lfernandes.org>,
        Josh Triplett <josh@...htriplett.org>,
        Zqiang <qiang.zhang1211@...il.com>,
        "Liam R . Howlett" <Liam.Howlett@...cle.com>
Subject: Re: [PATCH 0/4] rcu: Fix PF_IDLE related issues v3

On Fri, Oct 27, 2023 at 04:40:46PM +0200, Frederic Weisbecker wrote:

> Frederic Weisbecker (4):
>       rcu: Introduce rcu_cpu_online()
>       rcu/tasks: Handle new PF_IDLE semantics
>       rcu/tasks-trace: Handle new PF_IDLE semantics
>       sched: Exclude CPU boot code from PF_IDLE area

Aside of that pre-existing ->on_rq usage I can't see anything wrong with
this.

Acked-by: Peter Zijlstra (Intel) <peterz@...radead.org>