linux-kernel - Re: [PATCH RFC 02/12] entry/idle: Add a common function for activites during idle entry/exit

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Message-ID: <20200815081441.GG2674@hirez.programming.kicks-ass.net>
Date:   Sat, 15 Aug 2020 10:14:41 +0200
From:   peterz@...radead.org
To:     "Joel Fernandes (Google)" <joel@...lfernandes.org>
Cc:     linux-kernel@...r.kernel.org, Aaron Lu <aaron.lwe@...il.com>,
        Aubrey Li <aubrey.li@...ux.intel.com>,
        Julien Desfossez <jdesfossez@...italocean.com>,
        Kees Cook <keescook@...omium.org>,
        "Paul E. McKenney" <paulmck@...nel.org>,
        Paul Turner <pjt@...gle.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Tim Chen <tim.c.chen@...el.com>,
        Tim Chen <tim.c.chen@...ux.intel.com>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Vineeth Pillai <viremana@...ux.microsoft.com>,
        x86@...nel.org (maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)),
        fweisbec@...il.com, kerrnel@...gle.com,
        Phil Auld <pauld@...hat.com>,
        Valentin Schneider <valentin.schneider@....com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Chen Yu <yu.c.chen@...el.com>,
        Christian Brauner <christian.brauner@...ntu.com>
Subject: Re: [PATCH RFC 02/12] entry/idle: Add a common function for
 activites during idle entry/exit

On Fri, Aug 14, 2020 at 11:18:58PM -0400, Joel Fernandes (Google) wrote:
> Currently only RCU hooks for idle entry/exit are called. In later
> patches, kernel-entry protection functionality will be added.
> 
> Signed-off-by: Joel Fernandes (Google) <joel@...lfernandes.org>

NAK, rcu_idle_enter() is broken where it is now, it needs to be pushed
in deeper:

http://lkml.kernel.org/r/20200807193017.962482579@infradead.org