On 12/01/2017 06:03 PM, Christoph Hellwig wrote: > On Fri, Dec 01, 2017 at 05:34:50PM -0500, Jason Baron wrote: >> hmmm...I'm not sure how this suggestion would change the locking rules >> from what we currently have. Right now, we use ep->lock, if we remove >> that and use ep->wq->lock instead, there is just a 1-to-1 mapping there >> that has not changed, since ep->wq->lock currently is completely not >> being used. > > True. The patch below survives the amazing complex booting and starting > systemd with lockdep enabled test. Do we have something resembling a > epoll test suite? > I don't think we have any in the kernel tree proper (other than some selftests using epoll) but there are tests in ltp and some performance tests such as: http://linux-scalability.org/epoll/epoll-test.c http://www.xmailserver.org/linux-patches/pipetest.c Thanks, -Jason
