Re: [PATCH 01/10] sched/deadline: track the active utilization

From	Ingo Molnar <mingo@kernel.org>
Newsgroups	linux.kernel
Subject	Re: [PATCH 01/10] sched/deadline: track the active utilization
Date	2017-06-08 10:40 +0200
Message-ID	<tQ190-1Rp-1@gated-at.bofh.it> (permalink)
References	<tIA3T-8ln-7@gated-at.bofh.it> <tIA3V-8ln-45@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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* luca abeni <luca.abeni@santannapisa.it> wrote:

> From: Luca Abeni <luca.abeni@unitn.it>
> 
> Active utilization is defined as the total utilization of active
> (TASK_RUNNING) tasks queued on a runqueue. Hence, it is increased
> when a task wakes up and is decreased when a task blocks.
> 
> When a task is migrated from CPUi to CPUj, immediately subtract the
> task's utilization from CPUi and add it to CPUj. This mechanism is
> implemented by modifying the pull and push functions.
> Note: this is not fully correct from the theoretical point of view
> (the utilization should be removed from CPUi only at the 0 lag
> time), a more theoretically sound solution is presented in the
> next patches.
> 
> Signed-off-by: Juri Lelli <juri.lelli@arm.com>
> Signed-off-by: Luca Abeni <luca.abeni@unitn.it>
> Tested-by: Daniel Bristot de Oliveira <bristot@redhat.com>

So that SOB chain is not valid - either Juri needs to be the From: author, or it 
should be an Acked-by (or Reviewed-by).

For now I've converted this to:

> Signed-off-by: Luca Abeni <luca.abeni@unitn.it>
> Acked-by: Juri Lelli <juri.lelli@arm.com>

Please holler if you'd like something else.

Thanks,

	Ingo

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Re: [PATCH 01/10] sched/deadline: track the active utilization Ingo Molnar <mingo@kernel.org> - 2017-06-08 10:40 +0200
  Re: [PATCH 01/10] sched/deadline: track the active utilization Luca Abeni <luca.abeni@santannapisa.it> - 2017-06-08 10:50 +0200
    Re: [PATCH 01/10] sched/deadline: track the active utilization Juri Lelli <juri.lelli@arm.com> - 2017-06-08 11:10 +0200
      Re: [PATCH 01/10] sched/deadline: track the active utilization Steven Rostedt <rostedt@goodmis.org> - 2017-06-08 15:40 +0200
        Re: [PATCH 01/10] sched/deadline: track the active utilization Juri Lelli <juri.lelli@arm.com> - 2017-06-08 15:50 +0200

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