On Fri, 13 Oct 2017 13:14:44 +0200 Petr Mladek <[email protected]> wrote:
> In general, we could either improve detection of situations when > the entire system is locked. It would be a reason to risk calling > consoles even in NMI. > > Or we could accept that the "default" printk is not good for all > situations and allow more special "debugging" modes: > > + Peter's force_early_printk stuff > > + Allow to disable printk_safe and printk_safe_nmi. > There will be a risk of a deadlock caused by printk. > But there also will be a chance to see the messages. Or add the following case: The watchdog triggers, does the print, then if it triggers again in a certain amount of time, and the print still hasn't been flushed, the flush happens then. -- Steve
