linux

iv/linux

History

Saheed O. Bolarinwa 222578dad4 PCI/ASPM: Stop caching link L0s, L1 exit latencies

Previously we calculated the upstream and downstream L0s and L1 exit
latencies of the link in pcie_aspm_cap_init() and cached them in struct
pcie_link_state.latency_*.

These values are only used in pcie_aspm_check_latency() where they are
compared with the acceptable latencies on the link.  This path is used when
removing or changing the D state of the device, so it's relatively low
frequency.

To reduce the amount of per-link data we store, remove the latency_*
entries from struct pcie_link_state and calculate the latencies directly
where they are needed.

Link: https://lore.kernel.org/r/20211119193732.12343-3-refactormyself@gmail.com
Signed-off-by: Saheed O. Bolarinwa <refactormyself@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

2021-11-19 16:46:09 -06:00

aer_inject.c

PCI/AER: Add RCEC AER error injection support

2020-12-05 15:26:02 -06:00

aer.c

PCI: Correct misspelled and remove duplicated words

2021-10-08 17:14:04 -05:00

aspm.c

PCI/ASPM: Stop caching link L0s, L1 exit latencies

2021-11-19 16:46:09 -06:00

dpc.c

PCI: pciehp: Ignore Link Down/Up caused by DPC