linux-kernel - Re: [PATCH v3] stop_machine: Make migration_cpu_stop() does useful works for CONFIG_PREEMPT

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Message-ID: <20160914075005.GJ5008@twins.programming.kicks-ass.net>
Date:   Wed, 14 Sep 2016 09:50:05 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Cheng Chao <cs.os.kernel@...il.com>
Cc:     Oleg Nesterov <oleg@...hat.com>, mingo@...nel.org, tj@...nel.org,
        akpm@...ux-foundation.org, chris@...is-wilson.co.uk,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] stop_machine: Make migration_cpu_stop() does useful
 works for CONFIG_PREEMPT_NONE

On Wed, Sep 14, 2016 at 10:07:14AM +0800, Cheng Chao wrote:
> 
> great, __schedule() doesn't need pay any attention to the TASK_DEAD now.

There's still __schedule()->context_switch()->finish_task_switch().