On Sat, 25 Mar 2017, Sergey Senozhatsky wrote: > On (03/21/17 13:44), Sergey Senozhatsky wrote: > [..] > > so we probably can > > > > > > 1) move pr_info() out of zone->lock in __offline_isolated_pages(). > > meh... > > > > > > 2) switch to printk_deferred() in __offline_isolated_pages(). > > meh.. there might a bunch of other printks done from under zone->lock. > > > > > > 3) move add_timer() out of sclp_con_lock console in sclp_console_write(). > > well, there can be other consoles that do something similar. > > > > > > 4) ... something smart. > > > Sebastian, does this change make lockdep happy? > > it removes console drivers from the __offline_isolated_pages(). not the > best solution I can think of, but the simplest one.
It does. No complaint from lockdep.
