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| author |   Rajat Jain <rajatja@google.com> | 2018-06-21 16:48:29 -0700 |
|---|---|---|
| committer |   Bjorn Helgaas <bhelgaas@google.com> | 2018-07-19 16:19:52 -0500 |
| commit | 12833017e581c384afa35fb85ce540082b2d59fc (patch) | |
| tree | f1f66b0ca8de58a863393b14df6deeade6f1e3e8 /Documentation | |
| parent | PCI/AER: Add sysfs attributes to provide AER stats and breakdown (diff) | |
| download | linux-dev-12833017e581c384afa35fb85ce540082b2d59fc.tar.xz linux-dev-12833017e581c384afa35fb85ce540082b2d59fc.zip | |
PCI/AER: Add sysfs attributes for rootport cumulative stats
Add sysfs attributes for rootport statistics (that are cumulative of all
the ERR_* messages seen on this PCI hierarchy).
Signed-off-by: Rajat Jain <rajatja@google.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-pci-devices-aer_stats | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-pci-devices-aer_stats b/Documentation/ABI/testing/sysfs-bus-pci-devices-aer_stats index 3a784297cfed..4b0318c99507 100644 --- a/Documentation/ABI/testing/sysfs-bus-pci-devices-aer_stats +++ b/Documentation/ABI/testing/sysfs-bus-pci-devices-aer_stats @@ -92,3 +92,31 @@ AtomicOp Egress Blocked 0 TLP Prefix Blocked Error 0 TOTAL_ERR_NONFATAL 0 ------------------------------------------------------------------------- + +============================ +PCIe Rootport AER statistics +============================ +These attributes show up under only the rootports (or root complex event +collectors) that are AER capable. These indicate the number of error messages as +"reported to" the rootport. Please note that the rootports also transmit +(internally) the ERR_* messages for errors seen by the internal rootport PCI +device, so these counters include them and are thus cumulative of all the error +messages on the PCI hierarchy originating at that root port. + +Where: /sys/bus/pci/devices/<dev>/aer_stats/aer_rootport_total_err_cor +Date: July 2018 +Kernel Version: 4.19.0 +Contact: linux-pci@vger.kernel.org, rajatja@google.com +Description: Total number of ERR_COR messages reported to rootport. + +Where: /sys/bus/pci/devices/<dev>/aer_stats/aer_rootport_total_err_fatal +Date: July 2018 +Kernel Version: 4.19.0 +Contact: linux-pci@vger.kernel.org, rajatja@google.com +Description: Total number of ERR_FATAL messages reported to rootport. + +Where: /sys/bus/pci/devices/<dev>/aer_stats/aer_rootport_total_err_nonfatal +Date: July 2018 +Kernel Version: 4.19.0 +Contact: linux-pci@vger.kernel.org, rajatja@google.com +Description: Total number of ERR_NONFATAL messages reported to rootport. |