On 2018/11/08 13:45, Sergey Senozhatsky wrote: > So, can we just do the following? /* a sketch */ > > lockdep.c > printk_safe_enter_irqsave(flags); > lockdep_report(); > printk_safe_exit_irqrestore(flags); If buffer size were large enough to hold messages from out_of_memory(), I would like to use it for out_of_memory() because delaying SIGKILL due to waiting for printk() to complete is not good. Surely we can't hold all messages because amount from dump_tasks() is unpredictable. Maybe we can hold all messages from dump_header() except dump_tasks(). But isn't it essentially same with http://lkml.kernel.org/r/1493560477-3016-1-git-send-email-penguin-kernel@xxxxxxxxxxxxxxxxxxx which Linus does not want?
