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PCI/AER: Add sysfs attributes to provide AER stats and breakdown

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Add sysfs attributes to provide total and breakdown of the AERs seen,
into different type of correctable, fatal and nonfatal errors:

  /sys/bus/pci/devices/<dev>/aer_dev_correctable
  /sys/bus/pci/devices/<dev>/aer_dev_fatal
  /sys/bus/pci/devices/<dev>/aer_dev_nonfatal

Signed-off-by: Rajat Jain <[email protected]>
Signed-off-by: Bjorn Helgaas <[email protected]>
This commit is contained in:
Rajat Jain 2018-06-21 16:48:28 -07:00 • committed by Bjorn Helgaas
commit 81aa5206f9
5 changed files with 197 additions and 0 deletions
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5
Documentation/PCI/pcieaer-howto.txt
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@ -73,6 +73,11 @@ In the example, 'Requester ID' means the ID of the device who sends
the error message to root port. Pls. refer to pci express specs for
other fields.
2.4 AER Statistics / Counters
When PCIe AER errors are captured, the counters / statistics are also exposed
in the form of sysfs attributes which are documented at
Documentation/ABI/testing/sysfs-bus-pci-devices-aer_stats
3. Developer Guide