Messages in this thread | | | Date | Wed, 5 Dec 2018 19:08:18 -0800 | From | Davidlohr Bueso <> | Subject | Re: [RFC PATCH 1/1] epoll: use rwlock in order to reduce ep_poll_callback() contention |
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>On 12/3/18 6:02 AM, Roman Penyaev wrote:
>> if (!ep_is_linked(epi)) { >> - list_add_tail(&epi->rdllink, &ep->rdllist); >> + /* Reverse ->ovflist, events should be in FIFO */ >> + list_add(&epi->rdllink, &ep->rdllist); >> ep_pm_stay_awake(epi); >> }
This should probably a separate patch as it fixes the ordering, regardless of the rwlock+xchg optimization.
Thanks, Davidlohr
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