Re: [PATCH v10 6/7] PCI: document SR-IOV sysfs entries

Matthew Wilcox
2009-03-06T21:16:17Z

Randy, can you wordsmith this one?

I think I'm starting to understand the difference between physfn and
dep_link, but an example would definitely help. It may or may not be
appropriate to put it in.

On Fri, Feb 20, 2009 at 02:54:47PM +0800, Yu Zhao wrote:
> Signed-off-by: Yu Zhao <yu.zhao@intel.com>
> ---
> Documentation/ABI/testing/sysfs-bus-pci | 27 +++++++++++++++++++++++++++
> 1 files changed, 27 insertions(+), 0 deletions(-)
>
> diff --git a/Documentation/ABI/testing/sysfs-bus-pci b/Documentation/ABI/testing/sysfs-bus-pci
> index ceddcff..84dc100 100644
> --- a/Documentation/ABI/testing/sysfs-bus-pci
> +++ b/Documentation/ABI/testing/sysfs-bus-pci
> @@ -9,3 +9,30 @@ Description:
> that some devices may have malformatted data. If the
> underlying VPD has a writable section then the
> corresponding section of this file will be writable.
> +
> +What: /sys/bus/pci/devices/.../virtfn/N
> +Date: February 2009
> +Contact: Yu Zhao <yu.zhao@intel.com>
> +Description:
> + This symbol link appears when hardware supports SR-IOV
> + capability and Physical Function driver has enabled it.
> + The symbol link points to the PCI device sysfs entry of
> + Virtual Function whose index is N (0...MaxVFs-1).
> +
> +What: /sys/bus/pci/devices/.../virtfn/dep_link
> +Date: February 2009
> +Contact: Yu Zhao <yu.zhao@intel.com>
> +Description:
> + This symbol link appears when hardware supports SR-IOV
> + capability and Physical Function driver has enabled it,
> + and this device has vendor specific dependencies with
> + others. The symbol link points to the PCI device sysfs
> + entry of Physical Function this device depends on.
> +
> +What: /sys/bus/pci/devices/.../physfn
> +Date: February 2009
> +Contact: Yu Zhao <yu.zhao@intel.com>
> +Description:
> + This symbol link appears when a device is Virtual Function.
> + The symbol link points to the PCI device sysfs entry of
> + Physical Function this device associates with.
> --
> 1.6.1
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-pci" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html

--
Matthew Wilcox Intel Open Source Technology Centre
"Bill, look, we understand that you're interested in selling us this
operating system, but compare it to ours. We can't possibly take such
a retrograde step."