On Mon, Sep 12, 2022 12:09 AM Bart Van Assche wrote: > On 9/11/22 00:10, Yanjun Zhu wrote: > > I also implemented a workqueue for rxe. IMO, can we add a variable to > > decide to use tasklet or workqueue? > > > > If user prefer using tasklet, he can set the variable to use > > tasklet. And the default is tasklet. Set the variable to another > > value to use workqueue.
That's an interesting idea, but I am not sure how users specify it. IIRC, tasklets are generated when rdma link is added, typically by executing ' rdma link add' command. I don't think we can add an device specific option to the utility(iproute2/rdma). > > I'm in favor of removing all uses of the tasklet mechanism because of > the disadvantages of that mechanism. See also: > * "Eliminating tasklets" (https://lwn.net/Articles/239633/). > * "Modernizing the tasklet API" (https://lwn.net/Articles/830964/). > * Sebastian Andrzej Siewior's opinion about tasklets > (https://lore.kernel.org/all/yvovfxmjqaubs...@linutronix.de/). I am also in favor of using workqueues alone not only because of the disadvantages above but also to avoid complexity. I would like to know if there is anybody who will bothered by the change especially in terms of performance. Thanks, Daisuke > > Thanks, > > Bart.
