On Tue, 2017-05-09 at 09:45 -0600, Jens Axboe wrote: > > > > > > Is it from this_cpu_ptr() in blk_stat_add()? > > > > > > > > > > Yeah. > > > > > > > > So why is this complaining, doesn't rcu_read_lock() disable > > > > preemption? > > > > > > Ah, I guess it doesn't if PREEMPT_RCU is set. How about the > > > below? > > > > Should do it. I was about to run LTP (where it turned up) again > > anyway, I'll add this. No news is good news, what you should hear. > > Thanks, let me know, so I can add your tested-by (or whatever you > prefer).
Sure, but s/get_cpu_var/get_cpu_ptr first. -MIke