On Tue, Mar 13, 2018 at 11:20:24PM -0400, Sinan Kaya wrote: > Code includes wmb() followed by writel() in multiple places. writel() > already has a barrier on some architectures like arm64. > > This ends up CPU observing two barriers back to back before executing the > register write. > > Since code already has an explicit barrier call, changing writel() to > writel_relaxed(). > > Signed-off-by: Sinan Kaya <okaya@xxxxxxxxxxxxxx> > drivers/infiniband/hw/qedr/verbs.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) Sure matches my understanding of writel_relaxed This is part of a series, should we take just this patch through the rdma tree? If not: Acked-by: Jason Gunthorpe <jgg@xxxxxxxxxxxx> Thanks, Jason -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
