On (03/01/16 12:05), Petr Mladek wrote: [..] > > > yes, well, that's true for panic() in general. > > > > Petr, what do you think of this (added PRINTK_NMI_FLUSH_ON_PANIC)? > > > > 1) zap_locks() in console_flush_on_panic() > > 2) add PRINTK_NMI_FLUSH_ON_PANIC symbols > > 3) add printk_nmi_flush_on_panic() > > This is definitely better than nothing. Well, it seems that > the printk/NMI patches that motivated this patch will be > removed for a while, see > http://thread.gmane.org/gmane.linux.ports.arm.kernel/482845/focus=483002 >
Oh, thanks a lot for the link! wasn't aware of it. > I want to play with the panic handling a bit more and make it better > working out of box. It might be enough to put the messages into > the rind buffer when crashdump is going to be produced. Also > there is still the idea about using the lock-less early console. > I think that the solution from this patch might be the last > fallback. > > Thanks a lot for proposals, OK, good to know that. -ss