Re: [PATCH v3 2/2] locking: Implement an algorithm choice for Wound-Wait mutexes

On 06/15/2018 06:46 PM, Peter Zijlstra wrote: On Fri, Jun 15, 2018 at 02:08:27PM +0200, Thomas Hellstrom wrote: @@ -772,6 +856,25 @@ __ww_mutex_add_waiter(struct mutex_waiter *waiter, } list_add_tail(&waiter->list, pos); + if (__mutex_waiter_is_first(lock, waiter)) +

Re: [PATCH v3 2/2] locking: Implement an algorithm choice for Wound-Wait mutexes

On Fri, Jun 15, 2018 at 02:08:27PM +0200, Thomas Hellstrom wrote: > @@ -772,6 +856,25 @@ __ww_mutex_add_waiter(struct mutex_waiter *waiter, > } > > list_add_tail(&waiter->list, pos); > + if (__mutex_waiter_is_first(lock, waiter)) > + __mutex_set_flag(lock, MUTEX_FLAG_