On 02/23/2017 09:08 PM, Mike Galbraith wrote: > On Thu, 2017-02-23 at 13:15 +0100, Rafael J. Wysocki wrote: >> On Wednesday, February 22, 2017 10:55:04 PM Alex Shi wrote: >>>> >>>> Its not hard; spinlock_t ends up being a mutex, and this is ran >>>> from the >>>> idle thread. What thread do you think we ought to run when we >>>> block >>>> idle? >>>> >>> >>> Straight right. >>> Thanks for explanations! :) >> >> I overlooked that, sorry. >> >> Shall we revert? >> >> I don't want RT to be broken because of this. > > Just whacking the lock would take care of that. The question is who is > gonna use this, and what does it really buy them? When I look at that > commit, an eyebrow raises, lock or no lock. >
Right per cpu lock for per cpu data is unnecessary.
