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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>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.