Re: [PATCH v2] stop_machine: Make migration_cpu_stop() does useful works for CONFIG_PREEMPT_NONE

From	Peter Zijlstra <peterz@infradead.org>
Newsgroups	linux.kernel
Subject	Re: [PATCH v2] stop_machine: Make migration_cpu_stop() does useful works for CONFIG_PREEMPT_NONE
Date	2016-09-09 18:30 +0200
Message-ID	<sfwQF-5jZ-1@gated-at.bofh.it> (permalink)
References	<sfpct-qw-3@gated-at.bofh.it> <sfpct-qw-1@gated-at.bofh.it> <sftSO-3gY-17@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On Fri, Sep 09, 2016 at 03:14:49PM +0200, Oleg Nesterov wrote:
> On 09/09, Cheng Chao wrote:
> >
> > If the migration_cpu_stop() can not migrate,why do we call stop_one_cpu()?
> > It just makes the task TASK_UNINTERRUPTIBLE, wakes up the stopper thread,
> > executes migration_cpu_stop(), and the stopper thread wakes up the task.
> 

Still not seeing any mail from Cheng Chao. I think he's mailing from a
domain that's not accepting email and then infradead makes its go-away,
why accept email from people who will not accept bounces.

Cheng, please fix your email setup.

Thread

[PATCH v2] stop_machine: Make migration_cpu_stop() does useful works for CONFIG_PREEMPT_NONE Cheng Chao <chengchao@kedacom.com> - 2016-09-09 10:20 +0200
  Re: [PATCH v2] stop_machine: Make migration_cpu_stop() does useful  works for CONFIG_PREEMPT_NONE chengchao <chengchao@kedacom.com> - 2016-09-09 10:20 +0200
  Re: [PATCH v2] stop_machine: Make migration_cpu_stop() does useful         works for CONFIG_PREEMPT_NONE Oleg Nesterov <oleg@redhat.com> - 2016-09-09 15:20 +0200
    Re: [PATCH v2] stop_machine: Make migration_cpu_stop() does useful  works for CONFIG_PREEMPT_NONE Peter Zijlstra <peterz@infradead.org> - 2016-09-09 18:30 +0200
  [PATCH v3] stop_machine: Make migration_cpu_stop() does useful works for CONFIG_PREEMPT_NONE Cheng Chao <cs.os.kernel@gmail.com> - 2016-09-10 11:00 +0200
    Re: [PATCH v3] stop_machine: Make migration_cpu_stop() does useful  works for CONFIG_PREEMPT_NONE Cheng Chao <cs.os.kernel@gmail.com> - 2016-09-10 12:00 +0200
      Re: [PATCH v3] stop_machine: Make migration_cpu_stop() does useful  works for CONFIG_PREEMPT_NONE Peter Zijlstra <peterz@infradead.org> - 2016-09-10 18:40 +0200
    Re: [PATCH v3] stop_machine: Make migration_cpu_stop() does useful         works for CONFIG_PREEMPT_NONE Oleg Nesterov <oleg@redhat.com> - 2016-09-12 13:10 +0200
      Re: [PATCH v3] stop_machine: Make migration_cpu_stop() does useful  works for CONFIG_PREEMPT_NONE Cheng Chao <cs.os.kernel@gmail.com> - 2016-09-13 04:50 +0200
    Re: [PATCH v3] stop_machine: Make migration_cpu_stop() does useful  works for CONFIG_PREEMPT_NONE Peter Zijlstra <peterz@infradead.org> - 2016-09-12 13:40 +0200
      Re: [PATCH v3] stop_machine: Make migration_cpu_stop() does useful  works for CONFIG_PREEMPT_NONE Peter Zijlstra <peterz@infradead.org> - 2016-09-12 13:50 +0200
        Re: [PATCH v3] stop_machine: Make migration_cpu_stop() does useful         works for CONFIG_PREEMPT_NONE Oleg Nesterov <oleg@redhat.com> - 2016-09-12 15:10 +0200
          Re: [PATCH v3] stop_machine: Make migration_cpu_stop() does useful  works for CONFIG_PREEMPT_NONE Peter Zijlstra <peterz@infradead.org> - 2016-09-12 17:10 +0200
            Re: [PATCH v3] stop_machine: Make migration_cpu_stop() does useful         works for CONFIG_PREEMPT_NONE Oleg Nesterov <oleg@redhat.com> - 2016-09-13 18:20 +0200
              Re: [PATCH v3] stop_machine: Make migration_cpu_stop() does useful  works for CONFIG_PREEMPT_NONE Peter Zijlstra <peterz@infradead.org> - 2016-09-13 18:40 +0200
                Re: [PATCH v3] stop_machine: Make migration_cpu_stop() does useful  works for CONFIG_PREEMPT_NONE Cheng Chao <cs.os.kernel@gmail.com> - 2016-09-14 04:10 +0200
                Re: [PATCH v3] stop_machine: Make migration_cpu_stop() does useful  works for CONFIG_PREEMPT_NONE Peter Zijlstra <peterz@infradead.org> - 2016-09-14 10:00 +0200
                Re: [PATCH v3] stop_machine: Make migration_cpu_stop() does useful         works for CONFIG_PREEMPT_NONE Oleg Nesterov <oleg@redhat.com> - 2016-09-14 17:50 +0200
                [tip:sched/core] sched/core: Optimize __schedule() tip-bot for Peter Zijlstra <tipbot@zytor.com> - 2016-09-22 16:10 +0200
        Re: [PATCH v3] stop_machine: Make migration_cpu_stop() does useful  works for CONFIG_PREEMPT_NONE Cheng Chao <cs.os.kernel@gmail.com> - 2016-09-13 06:10 +0200
          Re: [PATCH v3] stop_machine: Make migration_cpu_stop() does useful  works for CONFIG_PREEMPT_NONE Peter Zijlstra <peterz@infradead.org> - 2016-09-13 10:50 +0200
    [PATCH v4] stop_machine: Avoid a sleep and wakeup in the stop_one_cpu() Cheng Chao <cs.os.kernel@gmail.com> - 2016-09-14 04:10 +0200
      Re: [PATCH v4] stop_machine: Avoid a sleep and wakeup in the         stop_one_cpu() Oleg Nesterov <oleg@redhat.com> - 2016-09-14 18:00 +0200
      Re: [PATCH v4] stop_machine: Avoid a sleep and wakeup in the  stop_one_cpu() Cheng Chao <cs.os.kernel@gmail.com> - 2016-09-18 04:10 +0200
      [tip:sched/core] stop_machine: Avoid a sleep and wakeup in  stop_one_cpu() tip-bot for Cheng Chao <tipbot@zytor.com> - 2016-09-22 16:10 +0200

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