On Fri, Nov 7, 2025 at 7:00 AM Pasha Tatashin <[email protected]> wrote: > > > Hi, Pasha > > > > In our previous discussion, we talked about counting the number of times > > the kernel is rebooted via kexec. At that time, you suggested adding a > > variable in debugfs to keep track of this count. > > However, since debugfs is now optional, where would be an appropriate > > place to store this variable? > > It is an optional config and can still be enabled if the live update > reboot number value needs to be accessed through debugfs. However, > given that debugfs does not guarantee a stable interface, tooling > should not be built to require these interfaces. > > In the WIP LUO [1] I have, I pr_info() the live update number during > boot and also store it in the incoming LUO FDT tree, which can also be > accessed through this optional debugfs interface. > > The pr_info message appears like this during boot: > [ 0.000000] luo: Retrieved live update data, liveupdate number: 17 > > Pasha
Forgot to add link to WIP LUOv5: [1] https://github.com/soleen/linux/tree/luo/v5rc04
