On 07/04/2017 12:34 PM, Linus Torvalds wrote: > On Tue, Jul 4, 2017 at 8:17 AM, Jens Axboe <[email protected]> wrote: >> On 07/03/2017 06:00 PM, Linus Torvalds wrote: >>> >>> If they ever do come online, does that get fixed? I don't know. >>> Somebody should check. >> >> Yes, the blk-mq cpu hotplug code updates mappings when CPUs come and >> go, so that part is fine. That's exercised everytime the laptop is >> suspended and resumed. > > I don't think that's true any more. Commit fe631457ff3e changed it to > map the initial CPU's sequentially whether they are online or not. > Only after you run out of hardware queues will we start playing games. > > That's what worries me about the conflict - the two changes did very > different things to the same code. I'd really like somebody to take a > look at my resolution, and just in general how those two different > changes work together.
OK, I'll take a look at it tomorrow. -- Jens Axboe
