linux-kernel - [PATCH V2 0/2] sched/deadline: Revised wakeup for suspending constrained dl tasks

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Date:   Mon, 29 May 2017 16:24:01 +0200
From:   Daniel Bristot de Oliveira <bristot@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     Xunlei Pang <xpang@...hat.com>, Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Juri Lelli <juri.lelli@....com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Luca Abeni <luca.abeni@...tannapisa.it>,
        Tommaso Cucinotta <tommaso.cucinotta@...up.it>,
        Romulo Silva de Oliveira <romulo.deoliveira@...c.br>
Subject: [PATCH V2 0/2] sched/deadline: Revised wakeup for suspending constrained dl tasks

Hi,

Here is the new version of the patch.

Changes from RFC:
  - dl_runtime and dl_deadline don't get updated that often, so
    save the task's density in a new variable (dl_density) in the
    sched_dl_entity, avoiding a division in the wakeup path.
    (Steven Rostedt & Juri Lelli)

  - Added a patch fixing the comment of the variable dl_bw in the
    sched_dl_entity.

  - Comment fixes (Peter Zijlstra): 
    - Reference the correct dependency (s/edf5835/df8eac8cafce/).
    - Better explanation of the problem and solution.

  - Fixes the laxity check: Use WARN_ON and change the check to one
    that actually works :-) (Peter Zijlstra).

  - Adjust the alignment in the unlikely() in the function (Peter Zijlstra).

Daniel Bristot de Oliveira (2):
  sched/deadline: Comment fix - dl_bw = dl_runtime / dl_period
  sched/deadline: Use the revised wakeup rule for suspending constrained
    dl tasks

 include/linux/sched.h   |  3 +-
 kernel/sched/core.c     |  2 +
 kernel/sched/deadline.c | 98 +++++++++++++++++++++++++++++++++++++++++++------
 3 files changed, 91 insertions(+), 12 deletions(-)

-- 
2.5.5