John Ogness <john.ogness@xxxxxxxxxxxxx> writes: > On 2024-04-02, Esben Haabendal <esben@xxxxxxxxxx> wrote: >> Outside prinkt users might wan't assure whatever printed has reached >> its destination before continuing. E.g. during the shutdown-procedure, >> where printk-buffers aren't emptied before the system goes down. > > This is a reposting of: > > https://lore.kernel.org/lkml/20231030092432.3434623-1-martin@xxxxxxxxxx > > As I wrote in that thread: > > printk() tries to print directly from the calling context. Are you > experiencing problems where you do not see the restarting message? Yes, that is exactly what we are seing. > (If your answer is "yes", please explain the scenario and provide > information about the console driver you are using.) It is an i.MX8MP system, and console is attached to ttymxc1 (drivers/tty/serial/imx.c). Booting up, and simply executing "reboot" command. Without these two patches, the "reboot: Restarting system" message is not written to ttymxc1 console. With the patches, it is. > I assume you have tried the latest RT development version. I have reproduced the problem with v6.6.23-rt28. I haven't upgraded to 6.7 or 6.8 yet. Do you need me to retest with 6.8? /Esben
