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| author |   Logan Gunthorpe <logang@deltatee.com> | 2018-10-04 15:27:36 -0600 |
|---|---|---|
| committer |   Bjorn Helgaas <bhelgaas@google.com> | 2018-10-17 12:18:15 -0500 |
| commit | cbb8ca69fcbb2c82f70abcbb75b6ea8579236210 (patch) | |
| tree | e2f8962588096bf731c2858a9183b2fafa7bb629 /Documentation/ABI/testing/sysfs-bus-pci | |
| parent | PCI/P2PDMA: Support peer-to-peer memory (diff) | |
| download | linux-dev-cbb8ca69fcbb2c82f70abcbb75b6ea8579236210.tar.xz linux-dev-cbb8ca69fcbb2c82f70abcbb75b6ea8579236210.zip | |
PCI/P2PDMA: Add sysfs group to display p2pmem stats
Add a sysfs group to display statistics about P2P memory that is registered
in each PCI device.
Attributes in the group display the total amount of P2P memory, the amount
available and whether it is published or not.
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'Documentation/ABI/testing/sysfs-bus-pci')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-pci | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-pci b/Documentation/ABI/testing/sysfs-bus-pci index 44d4b2be92fd..8bfee557e50e 100644 --- a/Documentation/ABI/testing/sysfs-bus-pci +++ b/Documentation/ABI/testing/sysfs-bus-pci @@ -323,3 +323,27 @@ Description: This is similar to /sys/bus/pci/drivers_autoprobe, but affects only the VFs associated with a specific PF. + +What: /sys/bus/pci/devices/.../p2pmem/size +Date: November 2017 +Contact: Logan Gunthorpe <logang@deltatee.com> +Description: + If the device has any Peer-to-Peer memory registered, this + file contains the total amount of memory that the device + provides (in decimal). + +What: /sys/bus/pci/devices/.../p2pmem/available +Date: November 2017 +Contact: Logan Gunthorpe <logang@deltatee.com> +Description: + If the device has any Peer-to-Peer memory registered, this + file contains the amount of memory that has not been + allocated (in decimal). + +What: /sys/bus/pci/devices/.../p2pmem/published +Date: November 2017 +Contact: Logan Gunthorpe <logang@deltatee.com> +Description: + If the device has any Peer-to-Peer memory registered, this + file contains a '1' if the memory has been published for + use outside the driver that owns the device. |