linux-kernel - Re: [PATCH v2 0/5] PCI: functions/pci-epf-test: Add DMA data transfer

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Message-ID: <20200313174022.GA148658@google.com>
Date:   Fri, 13 Mar 2020 12:40:22 -0500
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     Lorenzo Pieralisi <lorenzo.pieralisi@....com>
Cc:     Kishon Vijay Abraham I <kishon@...com>,
        Andrew Murray <amurray@...goodpenguin.co.uk>,
        Alan Mikhak <alan.mikhak@...ive.com>,
        Tom Joseph <tjoseph@...ence.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
        Hou Zhiqiang <Zhiqiang.Hou@....com>
Subject: Re: [PATCH v2 0/5] PCI: functions/pci-epf-test: Add DMA data transfer

On Fri, Mar 13, 2020 at 04:56:13PM +0000, Lorenzo Pieralisi wrote:
> On Tue, Mar 03, 2020 at 04:07:47PM +0530, Kishon Vijay Abraham I wrote:
> > Patch series uses dma engine APIs in pci-epf-test to transfer data using
> > DMA. It also adds an option "-d" in pcitest for the user to indicate
> > whether DMA has to be used for data transfer. This also prints
> > throughput information for data transfer.
> > 
> > Changes from v1:
> > *) Fixed some of the function names from pci_epf_* to pci_epf_test_*
> > since the DMA support is now been moved to pci-epf-test.c
> > 
> > Kishon Vijay Abraham I (5):
> >   PCI: endpoint: functions/pci-epf-test: Add DMA support to transfer
> >     data
> >   PCI: endpoint: functions/pci-epf-test: Print throughput information
> >   misc: pci_endpoint_test: Use streaming DMA APIs for buffer allocation
> >   tools: PCI: Add 'd' command line option to support DMA
> >   misc: pci_endpoint_test: Add support to get DMA option from userspace
> > 
> >  drivers/misc/pci_endpoint_test.c              | 165 ++++++++++--
> >  drivers/pci/endpoint/functions/pci-epf-test.c | 253 +++++++++++++++++-
> >  include/uapi/linux/pcitest.h                  |   5 +
> >  tools/pci/pcitest.c                           |  20 +-
> >  4 files changed, 412 insertions(+), 31 deletions(-)
> 
> Hi Kishon,
> 
> I had to drop this series - waiting for you to send an updated one
> to fix the x86 build breakage - force pushed pci/endpoint out.

I updated my "next" branch with this updated branch so we can at least
test the other things on the lorenzo/pci/endpoint branch.

The lorenzo/pci/mobiveil branch is also temporarily out completely for
a build issue.