On Tue 2016-09-27 23:22:30, Sergey Senozhatsky wrote: > Hello, > > RFC > > This patch set extends a lock-less NMI per-cpu buffers idea to > handle recursive printk() calls. The basic mechanism is pretty much the > same -- at the beginning of a deadlock-prone section we switch to lock-less > printk callback, and return back to a default printk implementation at the > end; the messages are getting flushed to a logbuf buffer from a safer > context.
I was skeptical but I really like this way now. The switching of the buffers is a bit hairy in this version but I think that we could make it much better. Other than that it looks like a big win. It kills a lot of printk-related pain points. And it will not be that complicated after all. Best Regards, Petr
