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PCI/AER: Define aer_stats structure for AER capable devices

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Define a structure to hold the AER statistics.  There are 2 groups of
statistics: dev_* counters that are to be collected for all AER capable
devices and rootport_* counters that are collected for all (AER capable)
rootports only.  Allocate and free this structure when device is added or
released (thus counters survive the lifetime of the device).

Signed-off-by: Rajat Jain <rajatja@google.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Rajat Jain 2018-06-30 15:07:17 -05:00 • committed by Bjorn Helgaas
parent 60ed982a4e
commit db89ccbe52
4 changed files with 55 additions and 2 deletions
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1
include/linux/pci.h
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@ -299,6 +299,7 @@ struct pci_dev {
u8 hdr_type; /* PCI header type (`multi' flag masked out) */
#ifdef CONFIG_PCIEAER
u16 aer_cap; /* AER capability offset */
struct aer_stats *aer_stats; /* AER stats for this device */
#endif
u8 pcie_cap; /* PCIe capability offset */
u8 msi_cap; /* MSI capability offset */