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When certain ICM chunk is no longer needed, it needs to be freed. Fully freeing ICM memory involves issuing FW SYNC_STEERING command. This is very time consuming, and it is impractical to do it for every freed chunk. Instead, we manage these 'freed' chunks in hot list (list of chunks that are not required by SW any more, but HW might still access them). When size of the hot list reaches certain threshold, we purge it and issue SYNC_STEERING FW command. There is one threshold for all the different ICM types, which is not optimal, as different ICM types require different approach: STEs pool is very large, and it is very 'dynamic' in its nature, so letting hot list to become too large will result in a significant perf hiccup when purging the hot list. Modify action is much smaller and less dynamic, so we can let the hot list to grow to almost the size of the whole pool. This patch fixes this problem: instead of having same hot memory threshold for all the pools, sync operation will be triggered in accordance with the ICM type. Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.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.