> commit c389c98ec5f4a7aa4c36853e89801eb5ea81870e > Author: Paul E. McKenney <[email protected]> > Date: Mon Nov 27 09:04:22 2017 -0800 > > drivers/infiniband: Remove now-redundant smp_read_barrier_depends() > > The smp_read_barrier_depends() does nothing at all except on DEC Alpha, > and no current DEC Alpha systems use Infiniband: > > lkml.kernel.org/r/20171023085921.jwbntptn6ictbnvj@tower > > This commit therefore makes Infiniband depend on !ALPHA and removes > the now-ineffective invocations of smp_read_barrier_depends() from > the InfiniBand driver. > > Please note that this patch should not be construed as my saying that > InfiniBand's memory ordering is correct, but rather that this patch does > not in any way affect InfiniBand's correctness. In other words, the > result of applying this patch is bug-for-bug compatible with the original. > > Signed-off-by: Paul E. McKenney <[email protected]> > Cc: Doug Ledford <[email protected]> > Cc: Jason Gunthorpe <[email protected]> > Cc: Richard Henderson <[email protected]> > Cc: Ivan Kokshaysky <[email protected]> > Cc: Matt Turner <[email protected]> > Cc: Michael Cree <[email protected]> > Cc: Andrea Parri <[email protected]> > Cc: <[email protected]> > Cc: <[email protected]> > [ paulmck: Removed drivers/dma/ioat/dma.c per Jason Gunthorpe's feedback. > ]
Let me know if you want this patch to flow through the rdma tree.. Acked-by: Jason Gunthorpe <[email protected]>
