On 04/12/2019 03:09 AM, Ingo Molnar wrote: > * Peter Zijlstra <pet...@infradead.org> wrote: > >> On Fri, Apr 12, 2019 at 09:02:09AM +0200, Ingo Molnar wrote: >>> * Waiman Long <long...@redhat.com> wrote: >>> >>>> On 04/11/2019 04:12 AM, Peter Zijlstra wrote: >>>>> On Wed, Apr 10, 2019 at 02:42:19PM -0400, Waiman Long wrote: >>>>>> The owner field in the rw_semaphore structure is used primarily for >>>>>> optimistic spinning. However, identifying the rwsem owner can also be >>>>>> helpful in debugging as well as tracing locking related issues when >>>>>> analyzing crash dump. The owner field may also store state information >>>>>> that can be important to the operation of the rwsem. >>>>>> >>>>>> So the owner field is now made a permanent member of the rw_semaphore >>>>>> structure irrespective of CONFIG_RWSEM_SPIN_ON_OWNER. >>>>> sem->owner is still initialized under CONFIG_RWSEM_SPIN_ON_OWNER. >>>> Oh, you are right. I missed that part. I will fix it in the next version. >>> Could you please post the next series against tip:WIP.locking/core, which >>> is already being dogfood-ed in -tip and which I'm running on my desktop? >>> I'll backmerge any fixes as needed/requested. >> Urgh, please no, that's going to be hell to review :/ > Ok - full patches then. I'll handle the fallout. > > Thanks, > > Ingo
I will post an updated patchset later today. Sorry for the omission. Cheers, Longman
