On 03/28/2018 09:32 PM, Davidlohr Bueso wrote: > On Wed, 28 Mar 2018, Waiman Long wrote: > >> +config DEBUG_RWSEMS >> + bool "RW Semaphore debugging: basic checks" >> + depends on DEBUG_KERNEL && RWSEM_SPIN_ON_OWNER > > Why depend on RWSEM_SPIN_ON_OWNER? Doesn't everyone benefit from this? > For example, DEBUG_MUTEXES does not need it. > > Thanks, > Davidlohr
Because it checks the owner field which is present only if RWSEM_SPIN_ON_OWNER is defined. Mutex is different in the sense that the owner field is always there no matter if MUTEX_SPIN_ON_OWNER is set or not. Cheers, Longman
