From: Pavel Machek <pavel@ucw.cz>
To: Matteo Croce <mcroce@linux.microsoft.com>
Cc: linux-kernel@vger.kernel.org, Mike Rapoport <rppt@kernel.org>,
Guenter Roeck <linux@roeck-us.net>, Arnd Bergmann <arnd@arndb.de>,
Petr Mladek <pmladek@suse.com>,
Pavel Tatashin <pasha.tatashin@soleen.com>,
Kees Cook <keescook@chromium.org>,
Andrew Morton <akpm@linux-foundation.org>,
Tyler Hicks <tyhicks@linux.microsoft.com>
Subject: Re: [PATCH v4] reboot: allow to specify reboot mode via sysfs
Date: Mon, 22 Feb 2021 11:03:25 +0100 [thread overview]
Message-ID: <20210222100325.GA14587@amd> (raw)
In-Reply-To: <20201110202746.9690-1-mcroce@linux.microsoft.com>
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On Tue 2020-11-10 21:27:46, Matteo Croce wrote:
> From: Matteo Croce <mcroce@microsoft.com>
>
> The kernel cmdline reboot= option offers some sort of control
> on how the reboot is issued.
> Add handles in sysfs to allow setting these reboot options, so they
> can be changed when the system is booted, other than at boot time.
We already have a reboot syscall, do we need sysfs interface, too?
> +What: /sys/kernel/reboot/mode
> +Date: November 2020
> +KernelVersion: 5.11
> +Contact: Matteo Croce <mcroce@microsoft.com>
> +Description: Reboot mode. Valid values are: cold warm hard soft gpio
> +What: /sys/kernel/reboot/type
> +Date: November 2020
> +KernelVersion: 5.11
> +Contact: Matteo Croce <mcroce@microsoft.com>
> +Description: Reboot type. Valid values are: bios acpi kbd triple efi pci
what is difference between mode and type? What is difference between
cold and hard for example? WTF is gpio?
> +What: /sys/kernel/reboot/cpu
> +Date: November 2020
> +KernelVersion: 5.11
> +Contact: Matteo Croce <mcroce@microsoft.com>
> +Description: CPU number to use to reboot.
Why should user care about this?
--
http://www.livejournal.com/~pavelmachek
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next prev parent reply other threads:[~2021-02-22 10:08 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-10 20:27 [PATCH v4] reboot: allow to specify reboot mode via sysfs Matteo Croce
2020-11-12 3:50 ` [PATCH] reboot: Fix variable assignments in type_store Nathan Chancellor
2020-11-12 11:26 ` Matteo Croce
2020-11-12 17:49 ` Nathan Chancellor
2020-11-12 17:59 ` Matteo Croce
2020-11-12 18:09 ` Nathan Chancellor
2020-11-12 23:13 ` Andrew Morton
2020-11-13 0:20 ` Matteo Croce
2020-11-13 0:41 ` Matteo Croce
2020-11-13 1:18 ` Andrew Morton
2020-11-13 1:38 ` Matteo Croce
2020-11-13 2:46 ` Andrew Morton
2020-11-13 2:58 ` Matteo Croce
2020-11-13 20:06 ` Petr Mladek
2020-11-13 21:28 ` Matteo Croce
2020-11-18 11:47 ` Petr Mladek
2020-11-13 15:56 ` Petr Mladek
2021-02-22 10:03 ` Pavel Machek [this message]
2021-02-22 13:12 ` [PATCH v4] reboot: allow to specify reboot mode via sysfs Matteo Croce
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