PCI: Add schedule point in proc_bus_pci_read()

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PCI configuration space reads from /proc/bus/pci can often take several
milliseconds to complete.

Add a schedule point in proc_bus_pci_read() to reduce the maximum latency.

A similar change was made for sysfs by 2ce02a864a ("PCI: Add schedule
point in pci_read_config()").

Link: https://lore.kernel.org/r/20200824052025.48362-1-benbjiang@tencent.com
Link: https://lore.kernel.org/r/20210815150824.96773-1-kw@linux.com
Signed-off-by: Krzysztof Wilczyński <kw@linux.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

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Krzysztof Wilczyński 2021-08-15 15:08:24 +00:00 • committed by Bjorn Helgaas

parent 1901f8c9ca

commit a153e5e117

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drivers/pci/proc.c

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