Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
To:     "Rafael J. Wysocki" <rafael@kernel.org>,
        Len Brown <len.brown@intel.com>, Pavel Machek <pavel@ucw.cz>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Kevin Hilman <khilman@kernel.org>,
        Ulf Hansson <ulf.hansson@linaro.org>,
        Daniel Lezcano <daniel.lezcano@linaro.org>,
        Lorenzo Pieralisi <lpieralisi@kernel.org>,
        Sudeep Holla <sudeep.holla@arm.com>, linux-pm@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Cc:     Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>,
        Adrien Thierry <athierry@redhat.com>,
        Brian Masney <bmasney@redhat.com>,
        linux-rt-users@vger.kernel.org
Subject: [PATCH v2 0/5] PM: Fixes for Realtime systems
Date:   Mon, 19 Dec 2022 16:14:58 +0100
Message-Id: <20221219151503.385816-1-krzysztof.kozlowski@linaro.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Hi,

The goal is to make Linux kernel PM / PM domains / cpuidle friendlier for
Realtime systsems (PREEMPT_RT).  Realtime changes regular spinlocks into
sleeping primitives, thus other parts of the code must be ready for it.

Changes since v1
================
1. Patch #1: Add missing WARN for parent domain
2. New patches 3-5 for other issues encountered with PREEMPT_RT.

Best regards,
Krzysztof

---

Cc: Adrien Thierry <athierry@redhat.com>
Cc: Brian Masney <bmasney@redhat.com>
Cc: linux-rt-users@vger.kernel.org

Krzysztof Kozlowski (5):
  PM: domains: Add GENPD_FLAG_RT_SAFE for PREEMPT_RT
  cpuidle: psci: Mark as PREEMPT_RT safe
  cpuidle: psci: Do not suspend topology CPUs on PREEMPT_RT
  PM: Allow calling dev_pm_domain_set() with raw spinlock
  PM: domains: Do not call device_pm_check_callbacks() when holding
    genpd_lock()

 drivers/base/power/common.c           | 27 ++++++++++-
 drivers/base/power/domain.c           | 65 +++++++++++++++++++++++++--
 drivers/cpuidle/cpuidle-psci-domain.c |  3 +-
 drivers/cpuidle/cpuidle-psci.c        |  4 +-
 include/linux/pm_domain.h             | 16 +++++++
 5 files changed, 107 insertions(+), 8 deletions(-)

-- 
2.34.1