From: Jason Gunthorpe <jgg-uk2M96/98Pc@public.gmane.org>
To: "Paul E. McKenney"
<paulmck-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
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Andrea Parri
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linux-alpha-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH tip/core/rcu 16/21] drivers/infiniband: Remove now-redundant smp_read_barrier_depends()
Date: Fri, 1 Dec 2017 17:11:09 -0700 [thread overview]
Message-ID: <20171202001109.GQ7754@ziepe.ca> (raw)
In-Reply-To: <1512157876-24665-16-git-send-email-paulmck-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
On Fri, Dec 01, 2017 at 11:51:11AM -0800, Paul E. McKenney wrote:
> 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
I understand DEC Alpha has PCI, and we continue to support several
RDMA devices that used the PCI bus.
However, the hif1, rdma vt and qib drivers modified in this patch are
PCI-Express ONLY. So I think this idea is fine, but would revise the
commit message to focus on PCI-E not Infiniband.
> drivers/dma/ioat/dma.c | 2 --
> drivers/infiniband/Kconfig | 1 +
Did you mean to have ioat/dma.c in this patch?
Jason
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next prev parent reply other threads:[~2017-12-02 0:11 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20171201195053.GA23494@linux.vnet.ibm.com>
2017-12-01 19:51 ` [PATCH tip/core/rcu 16/21] drivers/infiniband: Remove now-redundant smp_read_barrier_depends() Paul E. McKenney
[not found] ` <1512157876-24665-16-git-send-email-paulmck-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2017-12-02 0:11 ` Jason Gunthorpe [this message]
2017-12-02 1:08 ` Paul E. McKenney
[not found] ` <20171202010851.GL7829-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2017-12-05 15:08 ` Jason Gunthorpe
2017-12-05 20:06 ` Paul E. McKenney
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