linux-kernel - [PATCH v2 0/4] cpuidle, haltpoll: governor switching on idle register

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Message-Id: <20190903132444.11808-1-joao.m.martins@oracle.com>
Date:   Tue,  3 Sep 2019 14:24:40 +0100
From:   Joao Martins <joao.m.martins@...cle.com>
To:     linux-pm@...r.kernel.org
Cc:     Joao Martins <joao.m.martins@...cle.com>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        linux-kernel@...r.kernel.org,
        Marcelo Tosatti <mtosatti@...hat.com>, kvm@...r.kernel.org
Subject: [PATCH v2 0/4] cpuidle, haltpoll: governor switching on idle register

Hey,

Presented herewith a series with aims to tie in together the haltpoll
idle driver and governor, without sacrificing previous governor setups.
In addition, there are a few fixes with respect to module loading for
cpuidle-haltpoll. 

The series is organized as follows:

 Patch 1: Allows idle driver stating a preferred governor that it
          wants to use, based on discussion here:

  https://lore.kernel.org/kvm/457e8ca1-beb3-ca39-b257-e7bc6bb35d4d@oracle.com/

 Patch 2: Decrease rating of governor, and allows previous defaults
	  to be as before haltpoll, while using @governor to switch to haltpoll
	  when haltpoll driver is registered;

 Patch 3 - 4: Module loading fixes. first is the incorrect error
	      reporting and second is supportting module unloading.

Thoughts, comments appreciated.

Thanks,
	Joao

v2:
* Add missing Fixes tag on patches 3 and 4.

Joao Martins (4):
  cpuidle: allow governor switch on cpuidle_register_driver()
  cpuidle-haltpoll: set haltpoll as preferred governor
  cpuidle-haltpoll: return -ENODEV on modinit failure
  cpuidle-haltpoll: do not set an owner to allow modunload

 drivers/cpuidle/cpuidle-haltpoll.c   |  4 ++--
 drivers/cpuidle/cpuidle.h            |  1 +
 drivers/cpuidle/driver.c             | 26 ++++++++++++++++++++++++++
 drivers/cpuidle/governor.c           |  6 +++---
 drivers/cpuidle/governors/haltpoll.c |  2 +-
 include/linux/cpuidle.h              |  3 +++
 6 files changed, 36 insertions(+), 6 deletions(-)

-- 
2.17.1