On Mon 2020-11-09 17:45:38, Matteo Croce wrote: > From: Matteo Croce <mcr...@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. > > The handlers are under <sysfs>/kernel/reboot, can be read to > get the current configuration and written to alter it. > > --- /dev/null > +++ b/Documentation/ABI/testing/sysfs-kernel-reboot > @@ -0,0 +1,31 @@ > +What: /sys/kernel/reboot > +Date: November 2020 > +KernelVersion: 5.11 > +Contact: Matteo Croce <mcr...@microsoft.com> > +Description: Interface to set the kernel reboot mode, similarly to > + what can be done via the reboot= cmdline option. > + (see Documentation/admin-guide/kernel-parameters.txt) > +
s/reboot mode/reboot behavior/ The reboot mode is only one of the modified parameters. > +What: /sys/kernel/reboot/mode > +Date: November 2020 > +KernelVersion: 5.11 > +Contact: Matteo Croce <mcr...@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 <mcr...@microsoft.com> > +Description: Reboot type. Valid values are: bios acpi kbd triple efi pci > + > +What: /sys/kernel/reboot/cpu > +Date: November 2020 > +KernelVersion: 5.11 > +Contact: Matteo Croce <mcr...@microsoft.com> > +Description: CPU number to use to reboot. > + > +What: /sys/kernel/reboot/force > +Date: November 2020 > +KernelVersion: 5.11 > +Contact: Matteo Croce <mcr...@microsoft.com> > +Description: Force an immediate reboot. This makes me feel like that the kernel will reboot immediately when you write "1". It would deserve a better explanation that would make it clear, something like: Description: Use forced reboot that does not contact the init system. Otherwise, it looks good to me. With the two above updates: Reviewed-by: Petr Mladek <pmla...@suse.com> Best Regards, Petr
