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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	[thread overview]
Message-ID: <20221219151503.385816-1-krzysztof.kozlowski@linaro.org> (raw)

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


WARNING: multiple messages have this Message-ID (diff)
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	[thread overview]
Message-ID: <20221219151503.385816-1-krzysztof.kozlowski@linaro.org> (raw)

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


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             reply	other threads:[~2022-12-19 15:15 UTC|newest]

Thread overview: 54+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-12-19 15:14 Krzysztof Kozlowski [this message]
2022-12-19 15:14 ` [PATCH v2 0/5] PM: Fixes for Realtime systems Krzysztof Kozlowski
2022-12-19 15:14 ` [PATCH v2 1/5] PM: domains: Add GENPD_FLAG_RT_SAFE for PREEMPT_RT Krzysztof Kozlowski
2022-12-19 15:14   ` Krzysztof Kozlowski
2023-01-04 15:45   ` Ulf Hansson
2023-01-04 15:45     ` Ulf Hansson
2023-01-06 14:52     ` Krzysztof Kozlowski
2023-01-06 14:52       ` Krzysztof Kozlowski
2023-01-12 10:36       ` Sebastian Andrzej Siewior
2023-01-12 10:36         ` Sebastian Andrzej Siewior
2023-01-12 11:27         ` Krzysztof Kozlowski
2023-01-12 11:27           ` Krzysztof Kozlowski
2023-01-12 10:32   ` Sebastian Andrzej Siewior
2023-01-12 10:32     ` Sebastian Andrzej Siewior
2023-01-12 11:31     ` Krzysztof Kozlowski
2023-01-12 11:31       ` Krzysztof Kozlowski
2022-12-19 15:15 ` [PATCH v2 2/5] cpuidle: psci: Mark as PREEMPT_RT safe Krzysztof Kozlowski
2022-12-19 15:15   ` Krzysztof Kozlowski
2023-01-12 11:00   ` Sebastian Andrzej Siewior
2023-01-12 11:00     ` Sebastian Andrzej Siewior
2023-01-12 11:32     ` Krzysztof Kozlowski
2023-01-12 11:32       ` Krzysztof Kozlowski
2023-01-17 15:27   ` Ulf Hansson
2023-01-17 15:27     ` Ulf Hansson
2023-01-19 15:40     ` Krzysztof Kozlowski
2023-01-19 15:40       ` Krzysztof Kozlowski
2023-01-19 17:06       ` Krzysztof Kozlowski
2023-01-19 17:06         ` Krzysztof Kozlowski
2022-12-19 15:15 ` [PATCH v2 3/5] cpuidle: psci: Do not suspend topology CPUs on PREEMPT_RT Krzysztof Kozlowski
2022-12-19 15:15   ` Krzysztof Kozlowski
2023-01-12 11:09   ` Sebastian Andrzej Siewior
2023-01-12 11:09     ` Sebastian Andrzej Siewior
2023-01-12 11:34     ` Krzysztof Kozlowski
2023-01-12 11:34       ` Krzysztof Kozlowski
2023-01-30  9:51       ` Sebastian Andrzej Siewior
2023-01-30  9:51         ` Sebastian Andrzej Siewior
2022-12-19 15:15 ` [PATCH v2 4/5] PM: Allow calling dev_pm_domain_set() with raw spinlock Krzysztof Kozlowski
2022-12-19 15:15   ` Krzysztof Kozlowski
2023-01-12 11:13   ` Sebastian Andrzej Siewior
2023-01-12 11:13     ` Sebastian Andrzej Siewior
2022-12-19 15:15 ` [PATCH v2 5/5] PM: domains: Do not call device_pm_check_callbacks() when holding genpd_lock() Krzysztof Kozlowski
2022-12-19 15:15   ` Krzysztof Kozlowski
2023-01-12 11:31   ` Sebastian Andrzej Siewior
2023-01-12 11:31     ` Sebastian Andrzej Siewior
2023-01-12 11:37     ` Krzysztof Kozlowski
2023-01-12 11:37       ` Krzysztof Kozlowski
2023-01-17 15:11   ` Ulf Hansson
2023-01-17 15:11     ` Ulf Hansson
2023-01-19 15:58     ` Krzysztof Kozlowski
2023-01-19 15:58       ` Krzysztof Kozlowski
2022-12-20 21:36 ` [PATCH v2 0/5] PM: Fixes for Realtime systems Adrien Thierry
2022-12-20 21:36   ` Adrien Thierry
2023-01-04 15:15   ` Ulf Hansson
2023-01-04 15:15     ` Ulf Hansson

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