From: Dmitry Osipenko <digetx@gmail.com>
To: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: linux-kernel@vger.kernel.org, linux-csky@vger.kernel.org,
linux-ia64@vger.kernel.org, linux-m68k@lists.linux-m68k.org,
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"Guenter Roeck" <linux@roeck-us.net>,
"Daniel Lezcano" <daniel.lezcano@linaro.org>,
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"Ulf Hansson" <ulf.hansson@linaro.org>,
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"K . C . Kuen-Chern Lin" <kclin@andestech.com>,
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Subject: Re: [PATCH v6 00/21] Introduce power-off+restart call chain API
Date: Wed, 16 Feb 2022 01:00:33 +0300 [thread overview]
Message-ID: <635e8121-fca4-580c-6af5-d9317a2eee1b@gmail.com> (raw)
In-Reply-To: <20220130233718.21544-1-digetx@gmail.com>
31.01.2022 02:36, Dmitry Osipenko пишет:
> Problem
> -------
>
> SoC devices require power-off call chaining functionality from kernel.
> We have a widely used restart chaining provided by restart notifier API,
> but nothing for power-off.
>
> Solution
> --------
>
> Introduce new API that provides both restart and power-off call chains.
>
> Why combine restart with power-off? Because drivers often do both.
> More practical to have API that provides both under the same roof.
>
> The new API is designed with simplicity and extensibility in mind.
> It's built upon the existing restart and reboot APIs. The simplicity
> is in new helper functions that are convenient for drivers. The
> extensibility is in the design that doesn't hardcode callback
> arguments, making easy to add new parameters and remove old.
>
> This is a third attempt to introduce the new API. First was made by
> Guenter Roeck back in 2014, second was made by Thierry Reding in 2017.
> In fact the work didn't stop and recently arm_pm_restart() was removed
> from v5.14 kernel, which was a part of preparatory work started by
> Guenter Roeck. I took into account experience and ideas from the
> previous attempts, extended and polished them.
Rafael and all, do you see anything critical that needs to be improved
in this v6?
Will be great if you could take this patchset via the power tree if it
looks okay, or give an ack.
next prev parent reply other threads:[~2022-02-15 22:00 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-30 23:36 [PATCH v6 00/21] Introduce power-off+restart call chain API Dmitry Osipenko
2022-01-30 23:36 ` [PATCH v6 01/21] notifier: Add blocking_notifier_call_chain_is_empty() Dmitry Osipenko
2022-01-30 23:36 ` [PATCH v6 02/21] notifier: Add atomic/blocking_notifier_chain_register_unique_prio() Dmitry Osipenko
2022-01-30 23:37 ` [PATCH v6 03/21] reboot: Print error message if restart handler has duplicated priority Dmitry Osipenko
2022-01-30 23:37 ` [PATCH v6 04/21] kernel: Add combined power-off+restart handler call chain API Dmitry Osipenko
2022-01-30 23:37 ` [PATCH v6 05/21] ARM: Use do_kernel_power_off() Dmitry Osipenko
2022-01-30 23:37 ` [PATCH v6 06/21] csky: " Dmitry Osipenko
2022-01-30 23:37 ` [PATCH v6 07/21] riscv: " Dmitry Osipenko
2022-01-30 23:37 ` [PATCH v6 08/21] arm64: " Dmitry Osipenko
2022-01-30 23:37 ` [PATCH v6 09/21] parisc: " Dmitry Osipenko
2022-01-30 23:37 ` [PATCH v6 10/21] xen/x86: " Dmitry Osipenko
2022-01-30 23:37 ` [PATCH v6 11/21] powerpc: " Dmitry Osipenko
2022-01-30 23:37 ` [PATCH v6 12/21] m68k: Switch to new sys-off handler API Dmitry Osipenko
2022-01-30 23:37 ` [PATCH v6 13/21] sh: Use do_kernel_power_off() Dmitry Osipenko
2022-01-30 23:37 ` [PATCH v6 14/21] x86: " Dmitry Osipenko
2022-01-30 23:37 ` [PATCH v6 15/21] ia64: " Dmitry Osipenko
2022-01-30 23:37 ` [PATCH v6 16/21] mips: " Dmitry Osipenko
2022-02-21 14:42 ` Thomas Bogendoerfer
2022-01-30 23:37 ` [PATCH v6 17/21] nds32: " Dmitry Osipenko
2022-01-30 23:37 ` [PATCH v6 18/21] memory: emif: Use kernel_can_power_off() Dmitry Osipenko
2022-01-31 9:28 ` Krzysztof Kozlowski
2022-01-30 23:37 ` [PATCH v6 19/21] ACPI: power: Switch to sys-off handler API Dmitry Osipenko
2022-01-30 23:37 ` [PATCH v6 20/21] regulator: pfuze100: Use devm_register_sys_off_handler() Dmitry Osipenko
2022-01-30 23:37 ` [PATCH v6 21/21] reboot: Remove pm_power_off_prepare() Dmitry Osipenko
2022-02-15 22:00 ` Dmitry Osipenko [this message]
2022-02-16 12:25 ` [PATCH v6 00/21] Introduce power-off+restart call chain API Rafael J. Wysocki
2022-02-16 20:30 ` Helge Deller
2022-02-17 10:12 ` Dmitry Osipenko
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