Messages in this thread | | | From | Krzysztof Kozlowski <> | Subject | [PATCH v2 0/5] PM: Fixes for Realtime systems | Date | Mon, 19 Dec 2022 16:14:58 +0100 |
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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
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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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